Refactored the interpolators to use only one single instance

Previously many objects parsed their own interpolators leading
to memory and computational overhead.
This is now unified into a single Static class.

Change-Id: I0537aca0e6dad10a7ffd52ba64b7356b0c5e4672
diff --git a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
index fd4161f..5b955a4 100644
--- a/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/SwipeHelper.java
@@ -30,11 +30,9 @@
 import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.accessibility.AccessibilityEvent;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
-import android.view.animation.LinearInterpolator;
 
 import com.android.systemui.classifier.FalsingManager;
+import com.android.systemui.statusbar.Interpolators;
 
 public class SwipeHelper implements Gefingerpoken {
     static final String TAG = "com.android.systemui.SwipeHelper";
@@ -48,9 +46,6 @@
     public static final int X = 0;
     public static final int Y = 1;
 
-    private static LinearInterpolator sLinearInterpolator = new LinearInterpolator();
-    private final Interpolator mFastOutLinearInInterpolator;
-
     private float SWIPE_ESCAPE_VELOCITY = 100f; // dp/sec
     private int DEFAULT_ESCAPE_ANIMATION_DURATION = 200; // ms
     private int MAX_ESCAPE_ANIMATION_DURATION = 400; // ms
@@ -97,8 +92,6 @@
         mPagingTouchSlop = ViewConfiguration.get(context).getScaledPagingTouchSlop();
 
         mLongPressTimeout = (long) (ViewConfiguration.getLongPressTimeout() * 1.5f); // extra long-press!
-        mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator(context,
-                android.R.interpolator.fast_out_linear_in);
         mFalsingThreshold = context.getResources().getDimensionPixelSize(
                 R.dimen.swipe_helper_falsing_threshold);
         mFalsingManager = FalsingManager.getInstance(context);
@@ -357,9 +350,9 @@
         }
         ObjectAnimator anim = createTranslationAnimation(animView, newPos);
         if (useAccelerateInterpolator) {
-            anim.setInterpolator(mFastOutLinearInInterpolator);
+            anim.setInterpolator(Interpolators.FAST_OUT_LINEAR_IN);
         } else {
-            anim.setInterpolator(sLinearInterpolator);
+            anim.setInterpolator(Interpolators.LINEAR);
         }
         anim.setDuration(duration);
         if (delay > 0) {
diff --git a/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java b/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java
index c9ba885..25f8bb0 100644
--- a/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/ViewInvertHelper.java
@@ -24,8 +24,8 @@
 import android.graphics.ColorMatrixColorFilter;
 import android.graphics.Paint;
 import android.view.View;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
+
+import com.android.systemui.statusbar.Interpolators;
 
 import java.util.ArrayList;
 
@@ -35,7 +35,6 @@
 public class ViewInvertHelper {
 
     private final Paint mDarkPaint = new Paint();
-    private final Interpolator mLinearOutSlowInInterpolator;
     private final ColorMatrix mMatrix = new ColorMatrix();
     private final ColorMatrix mGrayscaleMatrix = new ColorMatrix();
     private final long mFadeDuration;
@@ -46,8 +45,6 @@
         addTarget(v);
     }
     public ViewInvertHelper(Context context, long fadeDuration) {
-        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(context,
-                android.R.interpolator.linear_out_slow_in);
         mFadeDuration = fadeDuration;
     }
 
@@ -89,7 +86,7 @@
             }
         });
         animator.setDuration(mFadeDuration);
-        animator.setInterpolator(mLinearOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
         animator.setStartDelay(delay);
         animator.start();
     }
diff --git a/packages/SystemUI/src/com/android/systemui/assist/AssistDisclosure.java b/packages/SystemUI/src/com/android/systemui/assist/AssistDisclosure.java
index c3a8f2e..92cd027 100644
--- a/packages/SystemUI/src/com/android/systemui/assist/AssistDisclosure.java
+++ b/packages/SystemUI/src/com/android/systemui/assist/AssistDisclosure.java
@@ -16,8 +16,6 @@
 
 package com.android.systemui.assist;
 
-import com.android.systemui.R;
-
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
@@ -35,6 +33,9 @@
 import android.view.accessibility.AccessibilityEvent;
 import android.view.animation.AnimationUtils;
 
+import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
+
 /**
  * Visually discloses that contextual data was provided to an assistant.
  */
@@ -120,13 +121,11 @@
                     R.interpolator.assist_disclosure_trace));
             mAlphaInAnimator = ValueAnimator.ofInt(0, 255).setDuration(ALPHA_IN_ANIMATION_DURATION);
             mAlphaInAnimator.addUpdateListener(this);
-            mAlphaInAnimator.setInterpolator(AnimationUtils.loadInterpolator(mContext,
-                    android.R.interpolator.fast_out_slow_in));
+            mAlphaInAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
             mAlphaOutAnimator = ValueAnimator.ofInt(255, 0).setDuration(
                     ALPHA_OUT_ANIMATION_DURATION);
             mAlphaOutAnimator.addUpdateListener(this);
-            mAlphaOutAnimator.setInterpolator(AnimationUtils.loadInterpolator(mContext,
-                    android.R.interpolator.fast_out_linear_in));
+            mAlphaOutAnimator.setInterpolator(Interpolators.FAST_OUT_LINEAR_IN);
             mAnimator = new AnimatorSet();
             mAnimator.play(mAlphaInAnimator).with(mTracingAnimator);
             mAnimator.play(mAlphaInAnimator).before(mAlphaOutAnimator);
diff --git a/packages/SystemUI/src/com/android/systemui/assist/AssistOrbContainer.java b/packages/SystemUI/src/com/android/systemui/assist/AssistOrbContainer.java
index 67017db..34770c4 100644
--- a/packages/SystemUI/src/com/android/systemui/assist/AssistOrbContainer.java
+++ b/packages/SystemUI/src/com/android/systemui/assist/AssistOrbContainer.java
@@ -20,19 +20,15 @@
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.View;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
 
 import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
 
 public class AssistOrbContainer extends FrameLayout {
 
     private static final long EXIT_START_DELAY = 150;
 
-    private final Interpolator mLinearOutSlowInInterpolator;
-    private final Interpolator mFastOutLinearInInterpolator;
-
     private View mScrim;
     private View mNavbarScrim;
     private AssistOrbView mOrb;
@@ -49,10 +45,6 @@
 
     public AssistOrbContainer(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(context,
-                android.R.interpolator.linear_out_slow_in);
-        mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator(context,
-                android.R.interpolator.fast_out_slow_in);
     }
 
     @Override
@@ -109,12 +101,12 @@
                         .alpha(1f)
                         .setDuration(300)
                         .setStartDelay(0)
-                        .setInterpolator(mLinearOutSlowInInterpolator);
+                        .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
                 mNavbarScrim.animate()
                         .alpha(1f)
                         .setDuration(300)
                         .setStartDelay(0)
-                        .setInterpolator(mLinearOutSlowInInterpolator);
+                        .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
             }
         });
     }
@@ -132,12 +124,12 @@
                 .alpha(0f)
                 .setDuration(250)
                 .setStartDelay(EXIT_START_DELAY)
-                .setInterpolator(mFastOutLinearInInterpolator);
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         mNavbarScrim.animate()
                 .alpha(0f)
                 .setDuration(250)
                 .setStartDelay(EXIT_START_DELAY)
-                .setInterpolator(mFastOutLinearInInterpolator)
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                 .withEndAction(endRunnable);
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/assist/AssistOrbView.java b/packages/SystemUI/src/com/android/systemui/assist/AssistOrbView.java
index a3372a8..2d933f6 100644
--- a/packages/SystemUI/src/com/android/systemui/assist/AssistOrbView.java
+++ b/packages/SystemUI/src/com/android/systemui/assist/AssistOrbView.java
@@ -27,13 +27,13 @@
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewOutlineProvider;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.view.animation.OvershootInterpolator;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 
 import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
 
 public class AssistOrbView extends FrameLayout {
 
@@ -43,8 +43,6 @@
     private final Paint mBackgroundPaint = new Paint();
     private final Rect mCircleRect = new Rect();
     private final Rect mStaticRect = new Rect();
-    private final Interpolator mAppearInterpolator;
-    private final Interpolator mDisappearInterpolator;
     private final Interpolator mOvershootInterpolator = new OvershootInterpolator();
 
     private boolean mClipToOutline;
@@ -117,10 +115,6 @@
                 R.dimen.assist_orb_travel_distance);
         mMaxElevation = context.getResources().getDimensionPixelSize(
                 R.dimen.assist_orb_elevation);
-        mAppearInterpolator = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.linear_out_slow_in);
-        mDisappearInterpolator = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.fast_out_linear_in);
         mBackgroundPaint.setAntiAlias(true);
         mBackgroundPaint.setColor(getResources().getColor(R.color.assist_orb_color));
     }
@@ -256,8 +250,8 @@
     }
 
     public void startExitAnimation(long delay) {
-        animateCircleSize(0, 200, delay, mDisappearInterpolator);
-        animateOffset(0, 200, delay, mDisappearInterpolator);
+        animateCircleSize(0, 200, delay, Interpolators.FAST_OUT_LINEAR_IN);
+        animateOffset(0, 200, delay, Interpolators.FAST_OUT_LINEAR_IN);
     }
 
     public void startEnterAnimation() {
@@ -266,7 +260,7 @@
             @Override
             public void run() {
                 animateCircleSize(mCircleMinSize, 300, 0 /* delay */, mOvershootInterpolator);
-                animateOffset(mStaticOffset, 400, 0 /* delay */, mAppearInterpolator);
+                animateOffset(mStaticOffset, 400, 0 /* delay */, Interpolators.LINEAR_OUT_SLOW_IN);
             }
         });
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java b/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
index 38d24ce..db58a91 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ActivatableNotificationView.java
@@ -28,9 +28,7 @@
 import android.view.View;
 import android.view.ViewAnimationUtils;
 import android.view.ViewConfiguration;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
-import android.view.animation.LinearInterpolator;
 import android.view.animation.PathInterpolator;
 
 import com.android.systemui.R;
@@ -107,11 +105,8 @@
 
     private OnActivatedListener mOnActivatedListener;
 
-    private final Interpolator mLinearOutSlowInInterpolator;
-    protected final Interpolator mFastOutSlowInInterpolator;
     private final Interpolator mSlowOutFastInInterpolator;
     private final Interpolator mSlowOutLinearInInterpolator;
-    private final Interpolator mLinearInterpolator;
     private Interpolator mCurrentAppearInterpolator;
     private Interpolator mCurrentAlphaInterpolator;
 
@@ -135,13 +130,8 @@
     public ActivatableNotificationView(Context context, AttributeSet attrs) {
         super(context, attrs);
         mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
-        mFastOutSlowInInterpolator =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in);
         mSlowOutFastInInterpolator = new PathInterpolator(0.8f, 0.0f, 0.6f, 1.0f);
-        mLinearOutSlowInInterpolator =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.linear_out_slow_in);
         mSlowOutLinearInInterpolator = new PathInterpolator(0.8f, 0.0f, 1.0f, 1.0f);
-        mLinearInterpolator = new LinearInterpolator();
         setClipChildren(false);
         setClipToPadding(false);
         mLegacyColor = context.getColor(R.color.notification_legacy_background_color);
@@ -291,8 +281,8 @@
         Interpolator interpolator;
         Interpolator alphaInterpolator;
         if (!reverse) {
-            interpolator = mLinearOutSlowInInterpolator;
-            alphaInterpolator = mLinearOutSlowInInterpolator;
+            interpolator = Interpolators.LINEAR_OUT_SLOW_IN;
+            alphaInterpolator = Interpolators.LINEAR_OUT_SLOW_IN;
         } else {
             interpolator = ACTIVATE_INVERSE_INTERPOLATOR;
             alphaInterpolator = ACTIVATE_INVERSE_ALPHA_INTERPOLATOR;
@@ -431,7 +421,7 @@
                 .scaleY(1f)
                 .setDuration(DARK_ANIMATION_LENGTH)
                 .setStartDelay(delay)
-                .setInterpolator(mLinearOutSlowInInterpolator)
+                .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN)
                 .setListener(new AnimatorListenerAdapter() {
                     @Override
                     public void onAnimationCancel(Animator animation) {
@@ -474,7 +464,7 @@
         mBackgroundNormal.setAlpha(startAlpha);
         mBackgroundAnimator =
                 ObjectAnimator.ofFloat(mBackgroundNormal, View.ALPHA, startAlpha, endAlpha);
-        mBackgroundAnimator.setInterpolator(mFastOutSlowInInterpolator);
+        mBackgroundAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         mBackgroundAnimator.setDuration(duration);
         mBackgroundAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
@@ -577,16 +567,16 @@
         float targetValue;
         if (isAppearing) {
             mCurrentAppearInterpolator = mSlowOutFastInInterpolator;
-            mCurrentAlphaInterpolator = mLinearOutSlowInInterpolator;
+            mCurrentAlphaInterpolator = Interpolators.LINEAR_OUT_SLOW_IN;
             targetValue = 1.0f;
         } else {
-            mCurrentAppearInterpolator = mFastOutSlowInInterpolator;
+            mCurrentAppearInterpolator = Interpolators.FAST_OUT_SLOW_IN;
             mCurrentAlphaInterpolator = mSlowOutLinearInInterpolator;
             targetValue = 0.0f;
         }
         mAppearAnimator = ValueAnimator.ofFloat(mAppearAnimationFraction,
                 targetValue);
-        mAppearAnimator.setInterpolator(mLinearInterpolator);
+        mAppearAnimator.setInterpolator(Interpolators.LINEAR);
         mAppearAnimator.setDuration(
                 (long) (duration * Math.abs(mAppearAnimationFraction - targetValue)));
         mAppearAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
index ddffb5e..efa56bc 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
@@ -219,8 +219,6 @@
     // which notification is currently being longpress-examined by the user
     private NotificationGuts mNotificationGutsExposed;
 
-    private TimeInterpolator mLinearOutSlowIn, mFastOutLinearIn;
-
     private KeyboardShortcuts mKeyboardShortcuts;
 
     /**
@@ -638,11 +636,6 @@
 
         mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
 
-        mLinearOutSlowIn = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.linear_out_slow_in);
-        mFastOutLinearIn = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.fast_out_linear_in);
-
         // Connect in to the status bar manager service
         mCommandQueue = new CommandQueue(this);
 
@@ -1016,7 +1009,7 @@
                         final Animator a
                                 = ViewAnimationUtils.createCircularReveal(guts, x, y, 0, r);
                         a.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD);
-                        a.setInterpolator(mLinearOutSlowIn);
+                        a.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
                         a.start();
                         guts.setExposed(true);
                         mStackScroller.onHeightChanged(null, true /* needsAnimation */);
@@ -1048,7 +1041,7 @@
             final Animator a = ViewAnimationUtils.createCircularReveal(v,
                     x, y, r, 0);
             a.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD);
-            a.setInterpolator(mFastOutLinearIn);
+            a.setInterpolator(Interpolators.FAST_OUT_LINEAR_IN);
             a.addListener(new AnimatorListenerAdapter() {
                 @Override
                 public void onAnimationEnd(Animator animation) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/CrossFadeHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/CrossFadeHelper.java
index f71f092..24cd948 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/CrossFadeHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/CrossFadeHelper.java
@@ -31,7 +31,7 @@
         view.animate()
                 .alpha(0f)
                 .setDuration(ANIMATION_DURATION_LENGTH)
-                .setInterpolator(PhoneStatusBar.ALPHA_OUT)
+                .setInterpolator(Interpolators.ALPHA_OUT)
                 .withEndAction(new Runnable() {
                     @Override
                     public void run() {
@@ -56,7 +56,7 @@
         view.animate()
                 .alpha(1f)
                 .setDuration(ANIMATION_DURATION_LENGTH)
-                .setInterpolator(PhoneStatusBar.ALPHA_IN)
+                .setInterpolator(Interpolators.ALPHA_IN)
                 .withEndAction(null);
         if (view.hasOverlappingRendering()) {
             view.animate().withLayer();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/DragDownHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/DragDownHelper.java
index 8570198..5c83f5f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/DragDownHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/DragDownHelper.java
@@ -24,8 +24,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
+
 import com.android.systemui.ExpandHelper;
 import com.android.systemui.Gefingerpoken;
 import com.android.systemui.R;
@@ -53,7 +52,6 @@
     private final int[] mTemp2 = new int[2];
     private boolean mDraggedFarEnough;
     private ExpandableView mStartingChild;
-    private Interpolator mInterpolator;
     private float mLastHeight;
     private FalsingManager mFalsingManager;
 
@@ -61,8 +59,6 @@
             DragDownCallback dragDownCallback) {
         mMinDragDistance = context.getResources().getDimensionPixelSize(
                 R.dimen.keyguard_drag_down_min_distance);
-        mInterpolator =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in);
         mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
         mCallback = callback;
         mDragDownCallback = dragDownCallback;
@@ -187,7 +183,7 @@
         }
         ObjectAnimator anim = ObjectAnimator.ofInt(child, "actualHeight",
                 child.getActualHeight(), child.getMinHeight());
-        anim.setInterpolator(mInterpolator);
+        anim.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         anim.setDuration(SPRING_BACK_ANIMATION_LENGTH_MS);
         anim.addListener(new AnimatorListenerAdapter() {
             @Override
@@ -200,7 +196,7 @@
 
     private void cancelExpansion() {
         ValueAnimator anim = ValueAnimator.ofFloat(mLastHeight, 0);
-        anim.setInterpolator(mInterpolator);
+        anim.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         anim.setDuration(SPRING_BACK_ANIMATION_LENGTH_MS);
         anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
             @Override
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/FlingAnimationUtils.java b/packages/SystemUI/src/com/android/systemui/statusbar/FlingAnimationUtils.java
index 0fa088b..c4ffd7f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/FlingAnimationUtils.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/FlingAnimationUtils.java
@@ -19,7 +19,6 @@
 import android.animation.Animator;
 import android.content.Context;
 import android.view.ViewPropertyAnimator;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.view.animation.PathInterpolator;
 
@@ -41,8 +40,6 @@
     private static final float LINEAR_OUT_SLOW_IN_START_GRADIENT = 1.0f / LINEAR_OUT_SLOW_IN_X2;
 
     private Interpolator mLinearOutSlowIn;
-    private Interpolator mFastOutSlowIn;
-    private Interpolator mFastOutLinearIn;
 
     private float mMinVelocityPxPerSecond;
     private float mMaxLengthSeconds;
@@ -53,10 +50,6 @@
     public FlingAnimationUtils(Context ctx, float maxLengthSeconds) {
         mMaxLengthSeconds = maxLengthSeconds;
         mLinearOutSlowIn = new PathInterpolator(0, 0, LINEAR_OUT_SLOW_IN_X2, 1);
-        mFastOutSlowIn
-                = AnimationUtils.loadInterpolator(ctx, android.R.interpolator.fast_out_slow_in);
-        mFastOutLinearIn
-                = AnimationUtils.loadInterpolator(ctx, android.R.interpolator.fast_out_linear_in);
         mMinVelocityPxPerSecond
                 = MIN_VELOCITY_DP_PER_SECOND * ctx.getResources().getDisplayMetrics().density;
         mHighVelocityPxPerSecond
@@ -150,7 +143,7 @@
 
             // Just use a normal interpolator which doesn't take the velocity into account.
             durationSeconds = maxLengthSeconds;
-            mAnimatorProperties.interpolator = mFastOutSlowIn;
+            mAnimatorProperties.interpolator = Interpolators.FAST_OUT_SLOW_IN;
         }
         mAnimatorProperties.duration = (long) (durationSeconds * 1000);
         return mAnimatorProperties;
@@ -223,7 +216,7 @@
 
             // Just use a normal interpolator which doesn't take the velocity into account.
             durationSeconds = maxLengthSeconds;
-            mAnimatorProperties.interpolator = mFastOutLinearIn;
+            mAnimatorProperties.interpolator = Interpolators.FAST_OUT_LINEAR_IN;
         }
         mAnimatorProperties.duration = (long) (durationSeconds * 1000);
         return mAnimatorProperties;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/Interpolators.java b/packages/SystemUI/src/com/android/systemui/statusbar/Interpolators.java
new file mode 100644
index 0000000..5979468
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/Interpolators.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.systemui.statusbar;
+
+import android.view.animation.AccelerateDecelerateInterpolator;
+import android.view.animation.Interpolator;
+import android.view.animation.LinearInterpolator;
+import android.view.animation.PathInterpolator;
+
+/**
+ * Utility class to receive interpolators from
+ */
+public class Interpolators {
+    public static final Interpolator FAST_OUT_SLOW_IN = new PathInterpolator(0.4f, 0f, 0.2f, 1f);
+    public static final Interpolator FAST_OUT_LINEAR_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
+    public static final Interpolator LINEAR_OUT_SLOW_IN = new PathInterpolator(0f, 0f, 0.2f, 1f);
+    public static final Interpolator ALPHA_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
+    public static final Interpolator ALPHA_OUT = new PathInterpolator(0f, 0f, 0.8f, 1f);
+    public static final Interpolator LINEAR = new LinearInterpolator();
+    public static final Interpolator ACCELERATE_DECELERATE = new AccelerateDecelerateInterpolator();
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java
index 8058933..841b9d0 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/KeyguardAffordanceView.java
@@ -33,13 +33,11 @@
 import android.view.RenderNodeAnimator;
 import android.view.View;
 import android.view.ViewAnimationUtils;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.widget.ImageView;
 
 import com.android.systemui.R;
 import com.android.systemui.statusbar.phone.KeyguardAffordanceHelper;
-import com.android.systemui.statusbar.phone.PhoneStatusBar;
 
 /**
  * An ImageView which does not have overlapping renderings commands and therefore does not need a
@@ -55,8 +53,6 @@
 
     private final int mMinBackgroundRadius;
     private final Paint mCirclePaint;
-    private final Interpolator mAppearInterpolator;
-    private final Interpolator mDisappearInterpolator;
     private final int mInverseColor;
     private final int mNormalColor;
     private final ArgbEvaluator mColorInterpolator;
@@ -136,10 +132,6 @@
         mInverseColor = 0xff000000;
         mMinBackgroundRadius = mContext.getResources().getDimensionPixelSize(
                 R.dimen.keyguard_affordance_min_background_radius);
-        mAppearInterpolator = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.linear_out_slow_in);
-        mDisappearInterpolator = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.fast_out_linear_in);
         mColorInterpolator = new ArgbEvaluator();
         mFlingAnimationUtils = new FlingAnimationUtils(mContext, 0.3f);
     }
@@ -261,7 +253,7 @@
             RenderNodeAnimator animator = new RenderNodeAnimator(mHwCirclePaint,
                     RenderNodeAnimator.PAINT_ALPHA, 255);
             animator.setTarget(this);
-            animator.setInterpolator(PhoneStatusBar.ALPHA_IN);
+            animator.setInterpolator(Interpolators.ALPHA_IN);
             animator.setDuration(250);
             animator.start();
         }
@@ -282,7 +274,7 @@
         RenderNodeAnimator animator = new RenderNodeAnimator(mHwCirclePaint,
                 RenderNodeAnimator.PAINT_ALPHA, 0);
         animator.setDuration(duration);
-        animator.setInterpolator(PhoneStatusBar.ALPHA_OUT);
+        animator.setInterpolator(Interpolators.ALPHA_OUT);
         animator.setTarget(this);
         animator.start();
     }
@@ -352,8 +344,8 @@
             cancelAnimator(mPreviewClipper);
             ValueAnimator animator = getAnimatorToRadius(circleRadius);
             Interpolator interpolator = circleRadius == 0.0f
-                    ? mDisappearInterpolator
-                    : mAppearInterpolator;
+                    ? Interpolators.FAST_OUT_LINEAR_IN
+                    : Interpolators.LINEAR_OUT_SLOW_IN;
             animator.setInterpolator(interpolator);
             long duration = 250;
             if (!slowAnimation) {
@@ -438,8 +430,8 @@
             animator.addListener(mScaleEndListener);
             if (interpolator == null) {
                 interpolator = imageScale == 0.0f
-                        ? mDisappearInterpolator
-                        : mAppearInterpolator;
+                        ? Interpolators.FAST_OUT_LINEAR_IN
+                        : Interpolators.LINEAR_OUT_SLOW_IN;
             }
             animator.setInterpolator(interpolator);
             if (duration == -1) {
@@ -501,8 +493,8 @@
             animator.addListener(mAlphaEndListener);
             if (interpolator == null) {
                 interpolator = alpha == 0.0f
-                        ? mDisappearInterpolator
-                        : mAppearInterpolator;
+                        ? Interpolators.FAST_OUT_LINEAR_IN
+                        : Interpolators.LINEAR_OUT_SLOW_IN;
             }
             animator.setInterpolator(interpolator);
             if (duration == -1) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/StackScrollerDecorView.java b/packages/SystemUI/src/com/android/systemui/statusbar/StackScrollerDecorView.java
index 2f66c41..c836637 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/StackScrollerDecorView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/StackScrollerDecorView.java
@@ -21,8 +21,6 @@
 import android.view.View;
 import android.view.animation.Interpolator;
 
-import com.android.systemui.statusbar.phone.PhoneStatusBar;
-
 /**
  * A common base class for all views in the notification stack scroller which don't have a
  * background.
@@ -80,9 +78,9 @@
             float endValue = nowVisible ? 1.0f : 0.0f;
             Interpolator interpolator;
             if (nowVisible) {
-                interpolator = PhoneStatusBar.ALPHA_IN;
+                interpolator = Interpolators.ALPHA_IN;
             } else {
-                interpolator = PhoneStatusBar.ALPHA_OUT;
+                interpolator = Interpolators.ALPHA_OUT;
             }
             mAnimating = true;
             mContent.animate()
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java
index 4fd4cab..f43a5d0 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationHeaderViewWrapper.java
@@ -38,6 +38,7 @@
 
 import com.android.systemui.R;
 import com.android.systemui.ViewInvertHelper;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.TransformableView;
 import com.android.systemui.statusbar.ViewTransformationHelper;
 import com.android.systemui.statusbar.phone.NotificationPanelView;
@@ -55,7 +56,6 @@
             0, PorterDuff.Mode.SRC_ATOP);
     private final int mIconDarkAlpha;
     private final int mIconDarkColor = 0xffffffff;
-    protected final Interpolator mLinearOutSlowInInterpolator;
     protected final ViewInvertHelper mInvertHelper;
 
     protected final ViewTransformationHelper mTransformationHelper;
@@ -69,8 +69,6 @@
     protected NotificationHeaderViewWrapper(Context ctx, View view) {
         super(view);
         mIconDarkAlpha = ctx.getResources().getInteger(R.integer.doze_small_icon_alpha);
-        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(ctx,
-                android.R.interpolator.linear_out_slow_in);
         mInvertHelper = new ViewInvertHelper(ctx, NotificationPanelView.DOZE_ANIMATION_DURATION);
         mTransformationHelper = new ViewTransformationHelper();
         resolveHeaderViews();
@@ -185,7 +183,7 @@
         ValueAnimator animator = ValueAnimator.ofFloat(startIntensity, endIntensity);
         animator.addUpdateListener(updateListener);
         animator.setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
-        animator.setInterpolator(mLinearOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
         animator.setStartDelay(delay);
         if (listener != null) {
             animator.addListener(listener);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java
index a959e07..3475d13 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/NotificationTemplateViewWrapper.java
@@ -26,6 +26,7 @@
 import android.widget.TextView;
 
 import com.android.systemui.statusbar.CrossFadeHelper;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.TransformableView;
 import com.android.systemui.statusbar.ViewTransformationHelper;
 import com.android.systemui.statusbar.stack.StackStateAnimator;
@@ -64,7 +65,7 @@
                                             - ownPosition[1]) * 0.33f)
                                     .setDuration(
                                             StackStateAnimator.ANIMATION_DURATION_STANDARD)
-                                    .setInterpolator(TransformState.FAST_OUT_SLOW_IN)
+                                    .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                                     .withEndAction(new Runnable() {
                                         @Override
                                         public void run() {
@@ -103,7 +104,7 @@
                                     .translationY(0)
                                     .setDuration(
                                             StackStateAnimator.ANIMATION_DURATION_STANDARD)
-                                    .setInterpolator(TransformState.FAST_OUT_SLOW_IN)
+                                    .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                                     .withEndAction(new Runnable() {
                                         @Override
                                         public void run() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/TransformState.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/TransformState.java
index 388ba0e..3e1c40a 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/TransformState.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/TransformState.java
@@ -22,8 +22,6 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewParent;
-import android.view.animation.Interpolator;
-import android.view.animation.PathInterpolator;
 import android.widget.ImageView;
 import android.widget.ProgressBar;
 import android.widget.TextView;
@@ -31,6 +29,7 @@
 import com.android.systemui.R;
 import com.android.systemui.statusbar.CrossFadeHelper;
 import com.android.systemui.statusbar.ExpandableNotificationRow;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.stack.StackStateAnimator;
 
 /**
@@ -44,7 +43,6 @@
     private static final int CLIP_CLIPPING_SET = R.id.clip_children_set_tag;
     private static final int CLIP_CHILDREN_TAG = R.id.clip_children_tag;
     private static final int CLIP_TO_PADDING = R.id.clip_to_padding_tag;
-    public static final Interpolator FAST_OUT_SLOW_IN = new PathInterpolator(0.4f, 0f, 0.2f, 1f);
     private static Pools.SimplePool<TransformState> sInstancePool = new Pools.SimplePool<>(40);
 
     protected View mTransformedView;
@@ -110,7 +108,7 @@
             }
         }
         transformedView.animate()
-                .setInterpolator(TransformState.FAST_OUT_SLOW_IN)
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                 .setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD)
                 .withEndAction(new Runnable() {
                     @Override
@@ -168,7 +166,7 @@
                     .translationY(otherStablePosition[1] - ownPosition[1]);
         }
         transformedView.animate()
-                .setInterpolator(TransformState.FAST_OUT_SLOW_IN)
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                 .setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD)
                 .withEndAction(new Runnable() {
                     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/BarTransitions.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/BarTransitions.java
index a3f404a..37e5558 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/BarTransitions.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/BarTransitions.java
@@ -32,6 +32,7 @@
 import android.view.animation.LinearInterpolator;
 
 import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
 
 public class BarTransitions {
     private static final boolean DEBUG = false;
@@ -124,7 +125,6 @@
         private final int mTransparent;
         private final int mWarning;
         private final Drawable mGradient;
-        private final TimeInterpolator mInterpolator;
 
         private int mMode = -1;
         private boolean mAnimating;
@@ -152,7 +152,6 @@
                 mWarning = context.getColor(com.android.internal.R.color.battery_saver_mode_color);
             }
             mGradient = context.getDrawable(gradientResourceId);
-            mInterpolator = new LinearInterpolator();
         }
 
         @Override
@@ -222,7 +221,8 @@
                     mGradientAlpha = targetGradientAlpha;
                 } else {
                     final float t = (now - mStartTime) / (float)(mEndTime - mStartTime);
-                    final float v = Math.max(0, Math.min(mInterpolator.getInterpolation(t), 1));
+                    final float v = Math.max(0, Math.min(
+                            Interpolators.LINEAR.getInterpolation(t), 1));
                     mGradientAlpha = (int)(v * targetGradientAlpha + mGradientAlphaStart * (1 - v));
                     mColor = Color.argb(
                           (int)(v * Color.alpha(targetColor) + Color.alpha(mColorStart) * (1 - v)),
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java
index 3ff69c9..b5dba18 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeScrimController.java
@@ -23,11 +23,11 @@
 import android.content.Context;
 import android.os.Handler;
 import android.util.Log;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 
 import com.android.systemui.doze.DozeHost;
 import com.android.systemui.doze.DozeLog;
+import com.android.systemui.statusbar.Interpolators;
 
 /**
  * Controller which handles all the doze animations of the scrims.
@@ -37,10 +37,6 @@
     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
 
     private final DozeParameters mDozeParameters;
-    private final Interpolator mPulseInInterpolator = PhoneStatusBar.ALPHA_OUT;
-    private final Interpolator mPulseInInterpolatorPickup;
-    private final Interpolator mPulseOutInterpolator = PhoneStatusBar.ALPHA_IN;
-    private final Interpolator mDozeAnimationInterpolator;
     private final Handler mHandler = new Handler();
     private final ScrimController mScrimController;
 
@@ -55,8 +51,6 @@
     public DozeScrimController(ScrimController scrimController, Context context) {
         mScrimController = scrimController;
         mDozeParameters = new DozeParameters(context);
-        mDozeAnimationInterpolator = mPulseInInterpolatorPickup =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.linear_out_slow_in);
     }
 
     public void setDozing(boolean dozing, boolean animate) {
@@ -70,9 +64,11 @@
             cancelPulsing();
             if (animate) {
                 startScrimAnimation(false /* inFront */, 0f /* target */,
-                        NotificationPanelView.DOZE_ANIMATION_DURATION, mDozeAnimationInterpolator);
+                        NotificationPanelView.DOZE_ANIMATION_DURATION,
+                        Interpolators.LINEAR_OUT_SLOW_IN);
                 startScrimAnimation(true /* inFront */, 0f /* target */,
-                        NotificationPanelView.DOZE_ANIMATION_DURATION, mDozeAnimationInterpolator);
+                        NotificationPanelView.DOZE_ANIMATION_DURATION,
+                        Interpolators.LINEAR_OUT_SLOW_IN);
             } else {
                 abortAnimations();
                 mScrimController.setDozeBehindAlpha(0f);
@@ -116,7 +112,7 @@
             final boolean pickup = mPulseReason == DozeLog.PULSE_REASON_SENSOR_PICKUP;
             startScrimAnimation(true /* inFront */, 0f,
                     mDozeParameters.getPulseInDuration(pickup),
-                    pickup ? mPulseInInterpolatorPickup : mPulseInInterpolator,
+                    pickup ? Interpolators.LINEAR_OUT_SLOW_IN : Interpolators.ALPHA_OUT,
                     mPulseInFinished);
         }
     }
@@ -266,7 +262,7 @@
             if (DEBUG) Log.d(TAG, "Pulse out, mDozing=" + mDozing);
             if (!mDozing) return;
             startScrimAnimation(true /* inFront */, 1f, mDozeParameters.getPulseOutDuration(),
-                    mPulseOutInterpolator, mPulseOutFinished);
+                    Interpolators.ALPHA_IN, mPulseOutFinished);
         }
     };
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardAffordanceHelper.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardAffordanceHelper.java
index 41adeb5..c220efe 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardAffordanceHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardAffordanceHelper.java
@@ -24,12 +24,11 @@
 import android.view.VelocityTracker;
 import android.view.View;
 import android.view.ViewConfiguration;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
 
 import com.android.systemui.R;
 import com.android.systemui.classifier.FalsingManager;
 import com.android.systemui.statusbar.FlingAnimationUtils;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.KeyguardAffordanceView;
 
 /**
@@ -60,8 +59,6 @@
     private KeyguardAffordanceView mLeftIcon;
     private KeyguardAffordanceView mCenterIcon;
     private KeyguardAffordanceView mRightIcon;
-    private Interpolator mAppearInterpolator;
-    private Interpolator mDisappearInterpolator;
     private Animator mSwipeAnimator;
     private FalsingManager mFalsingManager;
     private int mMinBackgroundRadius;
@@ -107,10 +104,6 @@
         mHintGrowAmount =
                 mContext.getResources().getDimensionPixelSize(R.dimen.hint_grow_amount_sideways);
         mFlingAnimationUtils = new FlingAnimationUtils(mContext, 0.4f);
-        mAppearInterpolator = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.linear_out_slow_in);
-        mDisappearInterpolator = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.fast_out_linear_in);
         mFalsingManager = FalsingManager.getInstance(mContext);
     }
 
@@ -272,7 +265,7 @@
                 }
             }
         });
-        animator.setInterpolator(mAppearInterpolator);
+        animator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
         animator.setDuration(HINT_PHASE1_DURATION);
         animator.start();
         mSwipeAnimator = animator;
@@ -292,7 +285,7 @@
                 onFinishedListener.run();
             }
         });
-        animator.setInterpolator(mDisappearInterpolator);
+        animator.setInterpolator(Interpolators.FAST_OUT_LINEAR_IN);
         animator.setDuration(HINT_PHASE2_DURATION);
         animator.setStartDelay(HINT_CIRCLE_OPEN_DURATION);
         animator.start();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
index 14176a6..94d3829 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBottomAreaView.java
@@ -58,6 +58,7 @@
 import com.android.systemui.R;
 import com.android.systemui.assist.AssistManager;
 import com.android.systemui.statusbar.CommandQueue;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.KeyguardAffordanceView;
 import com.android.systemui.statusbar.KeyguardIndicationController;
 import com.android.systemui.statusbar.policy.AccessibilityController;
@@ -111,7 +112,6 @@
     private AccessibilityController mAccessibilityController;
     private PhoneStatusBar mPhoneStatusBar;
 
-    private final Interpolator mLinearOutSlowInInterpolator;
     private boolean mUserSetupComplete;
     private boolean mPrewarmBound;
     private Messenger mPrewarmMessenger;
@@ -146,8 +146,6 @@
     public KeyguardBottomAreaView(Context context, AttributeSet attrs, int defStyleAttr,
             int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
-        mLinearOutSlowInInterpolator =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.linear_out_slow_in);
     }
 
     private AccessibilityDelegate mAccessibilityDelegate = new AccessibilityDelegate() {
@@ -600,7 +598,7 @@
         mIndicationText.setAlpha(0f);
         mIndicationText.animate()
                 .alpha(1f)
-                .setInterpolator(mLinearOutSlowInInterpolator)
+                .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN)
                 .setDuration(NotificationPanelView.DOZE_ANIMATION_DURATION);
     }
 
@@ -610,7 +608,7 @@
         element.animate()
                 .alpha(1f)
                 .translationY(0f)
-                .setInterpolator(mLinearOutSlowInInterpolator)
+                .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN)
                 .setStartDelay(delay)
                 .setDuration(DOZE_ANIMATION_ELEMENT_DURATION);
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardStatusBarView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardStatusBarView.java
index f41e47b..e67aa84 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardStatusBarView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardStatusBarView.java
@@ -23,14 +23,13 @@
 import android.util.TypedValue;
 import android.view.View;
 import android.view.ViewTreeObserver;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
 import android.widget.ImageView;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
 
 import com.android.systemui.BatteryMeterView;
 import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.policy.BatteryController;
 import com.android.systemui.statusbar.policy.KeyguardUserSwitcher;
 import com.android.systemui.statusbar.policy.UserInfoController;
@@ -58,7 +57,6 @@
     private KeyguardUserSwitcher mKeyguardUserSwitcher;
 
     private int mSystemIconsSwitcherHiddenExpandedMargin;
-    private Interpolator mFastOutSlowInInterpolator;
 
     public KeyguardStatusBarView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -73,8 +71,6 @@
         mBatteryLevel = (TextView) findViewById(R.id.battery_level);
         mCarrierLabel = (TextView) findViewById(R.id.keyguard_carrier_text);
         loadDimens();
-        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(getContext(),
-                android.R.interpolator.fast_out_slow_in);
         updateUserSwitcher();
     }
 
@@ -199,7 +195,7 @@
                         .translationX(0)
                         .setDuration(400)
                         .setStartDelay(userSwitcherHiding ? 300 : 0)
-                        .setInterpolator(mFastOutSlowInInterpolator)
+                        .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                         .start();
                 if (userSwitcherHiding) {
                     getOverlay().add(mMultiUserSwitch);
@@ -207,7 +203,7 @@
                             .alpha(0f)
                             .setDuration(300)
                             .setStartDelay(0)
-                            .setInterpolator(PhoneStatusBar.ALPHA_OUT)
+                            .setInterpolator(Interpolators.ALPHA_OUT)
                             .withEndAction(new Runnable() {
                                 @Override
                                 public void run() {
@@ -223,7 +219,7 @@
                             .alpha(1f)
                             .setDuration(300)
                             .setStartDelay(200)
-                            .setInterpolator(PhoneStatusBar.ALPHA_IN);
+                            .setInterpolator(Interpolators.ALPHA_IN);
                 }
                 return true;
             }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 6aff563..50dd959 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -39,11 +39,11 @@
 import android.view.ViewTreeObserver;
 import android.view.WindowInsets;
 import android.view.accessibility.AccessibilityEvent;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.view.animation.PathInterpolator;
 import android.widget.FrameLayout;
 import android.widget.TextView;
+
 import com.android.internal.logging.MetricsLogger;
 import com.android.keyguard.KeyguardStatusView;
 import com.android.systemui.DejankUtils;
@@ -57,6 +57,7 @@
 import com.android.systemui.statusbar.ExpandableView;
 import com.android.systemui.statusbar.FlingAnimationUtils;
 import com.android.systemui.statusbar.GestureRecorder;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.KeyguardAffordanceView;
 import com.android.systemui.statusbar.NotificationData;
 import com.android.systemui.statusbar.StatusBarState;
@@ -150,9 +151,6 @@
     private int mUnlockMoveDistance;
     private float mEmptyDragAmount;
 
-    private Interpolator mFastOutSlowInInterpolator;
-    private Interpolator mFastOutLinearInterpolator;
-    private Interpolator mDozeAnimationInterpolator;
     private ObjectAnimator mClockAnimator;
     private int mClockAnimationTarget = -1;
     private int mTopPaddingAdjustment;
@@ -252,12 +250,6 @@
         mNotificationStackScroller.setOverscrollTopChangedListener(this);
         mNotificationStackScroller.setOnEmptySpaceClickListener(this);
         mNotificationStackScroller.setScrollView(mScrollView);
-        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(getContext(),
-                android.R.interpolator.fast_out_slow_in);
-        mFastOutLinearInterpolator = AnimationUtils.loadInterpolator(getContext(),
-                android.R.interpolator.fast_out_linear_in);
-        mDozeAnimationInterpolator = AnimationUtils.loadInterpolator(getContext(),
-                android.R.interpolator.linear_out_slow_in);
         mKeyguardBottomArea = (KeyguardBottomAreaView) findViewById(R.id.keyguard_bottom_area);
         mQsNavbarScrim = findViewById(R.id.qs_navbar_scrim);
         mAfforanceHelper = new KeyguardAffordanceHelper(this, getContext());
@@ -368,7 +360,7 @@
         }
         mQsSizeChangeAnimator = ValueAnimator.ofInt(oldHeight, newHeight);
         mQsSizeChangeAnimator.setDuration(300);
-        mQsSizeChangeAnimator.setInterpolator(mFastOutSlowInInterpolator);
+        mQsSizeChangeAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         mQsSizeChangeAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
             @Override
             public void onAnimationUpdate(ValueAnimator animation) {
@@ -468,7 +460,7 @@
                 }
                 mClockAnimator = ObjectAnimator
                         .ofFloat(mKeyguardStatusView, View.Y, mClockAnimationTarget);
-                mClockAnimator.setInterpolator(mFastOutSlowInInterpolator);
+                mClockAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
                 mClockAnimator.setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD);
                 mClockAnimator.addListener(new AnimatorListenerAdapter() {
                     @Override
@@ -1104,7 +1096,7 @@
                     .translationY(0f)
                     .setStartDelay(delay)
                     .setDuration(StackStateAnimator.ANIMATION_DURATION_GO_TO_FULL_SHADE)
-                    .setInterpolator(mFastOutSlowInInterpolator)
+                    .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                     .start();
             mQsContainer.setY(-mQsContainer.getHeight());
             mQsContainerAnimator = ObjectAnimator.ofFloat(mQsContainer, View.TRANSLATION_Y,
@@ -1113,7 +1105,7 @@
                             - mQsContainer.getTop());
             mQsContainerAnimator.setStartDelay(delay);
             mQsContainerAnimator.setDuration(StackStateAnimator.ANIMATION_DURATION_GO_TO_FULL_SHADE);
-            mQsContainerAnimator.setInterpolator(mFastOutSlowInInterpolator);
+            mQsContainerAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
             mQsContainerAnimator.addListener(mAnimateHeaderSlidingInListener);
             mQsContainerAnimator.start();
             mQsContainer.addOnLayoutChangeListener(mQsContainerAnimatorUpdater);
@@ -1135,7 +1127,7 @@
         mHeader.animate().y(-mHeader.getHeight())
                 .setStartDelay(0)
                 .setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD)
-                .setInterpolator(mFastOutSlowInInterpolator)
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                 .setListener(new AnimatorListenerAdapter() {
                     @Override
                     public void onAnimationEnd(Animator animation) {
@@ -1149,7 +1141,7 @@
                 .y(-mQsContainer.getHeight())
                 .setStartDelay(0)
                 .setDuration(StackStateAnimator.ANIMATION_DURATION_STANDARD)
-                .setInterpolator(mFastOutSlowInInterpolator)
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                 .start();
     }
 
@@ -1171,7 +1163,7 @@
         anim.setDuration(mStatusBar.isKeyguardFadingAway()
                 ? mStatusBar.getKeyguardFadingAwayDuration() / 2
                 : StackStateAnimator.ANIMATION_DURATION_STANDARD);
-        anim.setInterpolator(mDozeAnimationInterpolator);
+        anim.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
         anim.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
@@ -1196,7 +1188,7 @@
         ValueAnimator anim = ValueAnimator.ofFloat(0f, 1f);
         anim.addUpdateListener(mStatusBarAnimateAlphaListener);
         anim.setDuration(duration);
-        anim.setInterpolator(mDozeAnimationInterpolator);
+        anim.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
         anim.start();
     }
 
@@ -1215,7 +1207,7 @@
                     .alpha(0f)
                     .setStartDelay(mStatusBar.getKeyguardFadingAwayDelay())
                     .setDuration(mStatusBar.getKeyguardFadingAwayDuration() / 2)
-                    .setInterpolator(PhoneStatusBar.ALPHA_OUT)
+                    .setInterpolator(Interpolators.ALPHA_OUT)
                     .withEndAction(mAnimateKeyguardBottomAreaInvisibleEndRunnable)
                     .start();
         } else if (statusBarState == StatusBarState.KEYGUARD
@@ -1242,7 +1234,7 @@
                     .alpha(0f)
                     .setStartDelay(0)
                     .setDuration(160)
-                    .setInterpolator(PhoneStatusBar.ALPHA_OUT)
+                    .setInterpolator(Interpolators.ALPHA_OUT)
                     .withEndAction(mAnimateKeyguardStatusViewInvisibleEndRunnable);
             if (keyguardFadingAway) {
                 mKeyguardStatusView.animate()
@@ -1260,7 +1252,7 @@
                     .alpha(1f)
                     .setStartDelay(0)
                     .setDuration(320)
-                    .setInterpolator(PhoneStatusBar.ALPHA_IN)
+                    .setInterpolator(Interpolators.ALPHA_IN)
                     .withEndAction(mAnimateKeyguardStatusViewVisibleEndRunnable);
         } else if (statusBarState == StatusBarState.KEYGUARD) {
             mKeyguardStatusView.animate().cancel();
@@ -1674,14 +1666,14 @@
             boolean active = getMaxPanelHeight() - getExpandedHeight() > mUnlockMoveDistance;
             KeyguardAffordanceView lockIcon = mKeyguardBottomArea.getLockIcon();
             if (active && !mUnlockIconActive && mTracking) {
-                lockIcon.setImageAlpha(1.0f, true, 150, mFastOutLinearInterpolator, null);
+                lockIcon.setImageAlpha(1.0f, true, 150, Interpolators.FAST_OUT_LINEAR_IN, null);
                 lockIcon.setImageScale(LOCK_ICON_ACTIVE_SCALE, true, 150,
-                        mFastOutLinearInterpolator);
+                        Interpolators.FAST_OUT_LINEAR_IN);
             } else if (!active && mUnlockIconActive && mTracking) {
                 lockIcon.setImageAlpha(lockIcon.getRestingAlpha(), true /* animate */,
-                        150, mFastOutLinearInterpolator, null);
+                        150, Interpolators.FAST_OUT_LINEAR_IN, null);
                 lockIcon.setImageScale(1.0f, true, 150,
-                        mFastOutLinearInterpolator);
+                        Interpolators.FAST_OUT_LINEAR_IN);
             }
             mUnlockIconActive = active;
         }
@@ -1886,8 +1878,8 @@
         if (!expand && (mStatusBar.getBarState() == StatusBarState.KEYGUARD
                 || mStatusBar.getBarState() == StatusBarState.SHADE_LOCKED)) {
             KeyguardAffordanceView lockIcon = mKeyguardBottomArea.getLockIcon();
-            lockIcon.setImageAlpha(0.0f, true, 100, mFastOutLinearInterpolator, null);
-            lockIcon.setImageScale(2.0f, true, 100, mFastOutLinearInterpolator);
+            lockIcon.setImageAlpha(0.0f, true, 100, Interpolators.FAST_OUT_LINEAR_IN, null);
+            lockIcon.setImageScale(2.0f, true, 100, Interpolators.FAST_OUT_LINEAR_IN);
         }
     }
 
@@ -2027,12 +2019,12 @@
      */
     private void startHighlightIconAnimation(final KeyguardAffordanceView icon) {
         icon.setImageAlpha(1.0f, true, KeyguardAffordanceHelper.HINT_PHASE1_DURATION,
-                mFastOutSlowInInterpolator, new Runnable() {
+                Interpolators.FAST_OUT_SLOW_IN, new Runnable() {
                     @Override
                     public void run() {
                         icon.setImageAlpha(icon.getRestingAlpha(),
                                 true /* animate */, KeyguardAffordanceHelper.HINT_PHASE1_DURATION,
-                                mFastOutSlowInInterpolator, null);
+                                Interpolators.FAST_OUT_SLOW_IN, null);
                     }
                 });
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
index f0b7894..f036d04 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
@@ -29,7 +29,6 @@
 import android.view.MotionEvent;
 import android.view.ViewConfiguration;
 import android.view.ViewTreeObserver;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
 
@@ -39,6 +38,7 @@
 import com.android.systemui.classifier.FalsingManager;
 import com.android.systemui.doze.DozeLog;
 import com.android.systemui.statusbar.FlingAnimationUtils;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.StatusBarState;
 import com.android.systemui.statusbar.policy.HeadsUpManager;
 
@@ -100,8 +100,6 @@
     private float mInitialTouchX;
     private boolean mTouchDisabled;
 
-    private Interpolator mLinearOutSlowInInterpolator;
-    private Interpolator mFastOutSlowInInterpolator;
     private Interpolator mBounceInterpolator;
     protected KeyguardBottomAreaView mKeyguardBottomArea;
 
@@ -161,7 +159,7 @@
         }
         mPeekAnimator = ObjectAnimator.ofFloat(this, "expandedHeight", mPeekHeight)
                 .setDuration(250);
-        mPeekAnimator.setInterpolator(mLinearOutSlowInInterpolator);
+        mPeekAnimator.setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN);
         mPeekAnimator.addListener(new AnimatorListenerAdapter() {
             private boolean mCancelled;
 
@@ -187,10 +185,6 @@
     public PanelView(Context context, AttributeSet attrs) {
         super(context, attrs);
         mFlingAnimationUtils = new FlingAnimationUtils(context, 0.6f);
-        mFastOutSlowInInterpolator =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in);
-        mLinearOutSlowInInterpolator =
-                AnimationUtils.loadInterpolator(context, android.R.interpolator.linear_out_slow_in);
         mBounceInterpolator = new BounceInterpolator();
         mFalsingManager = FalsingManager.getInstance(context);
     }
@@ -951,7 +945,7 @@
         float target = Math.max(0, getMaxPanelHeight() - mHintDistance);
         ValueAnimator animator = createHeightAnimator(target);
         animator.setDuration(250);
-        animator.setInterpolator(mFastOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         animator.addListener(new AnimatorListenerAdapter() {
             private boolean mCancelled;
 
@@ -975,7 +969,7 @@
         mKeyguardBottomArea.getIndicationView().animate()
                 .translationY(-mHintDistance)
                 .setDuration(250)
-                .setInterpolator(mFastOutSlowInInterpolator)
+                .setInterpolator(Interpolators.FAST_OUT_SLOW_IN)
                 .withEndAction(new Runnable() {
                     @Override
                     public void run() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index b8bdb35..dbf812f 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -87,11 +87,8 @@
 import android.view.ViewStub;
 import android.view.WindowManager;
 import android.view.WindowManagerGlobal;
-import android.view.animation.AccelerateDecelerateInterpolator;
 import android.view.animation.AccelerateInterpolator;
 import android.view.animation.Interpolator;
-import android.view.animation.LinearInterpolator;
-import android.view.animation.PathInterpolator;
 import android.widget.ImageView;
 import android.widget.TextView;
 
@@ -125,6 +122,7 @@
 import com.android.systemui.statusbar.EmptyShadeView;
 import com.android.systemui.statusbar.ExpandableNotificationRow;
 import com.android.systemui.statusbar.GestureRecorder;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.KeyguardIndicationController;
 import com.android.systemui.statusbar.NotificationData;
 import com.android.systemui.statusbar.NotificationData.Entry;
@@ -438,10 +436,8 @@
     private boolean mDozingRequested;
     protected boolean mScrimSrcModeEnabled;
 
-    private Interpolator mLinearInterpolator = new LinearInterpolator();
-    private Interpolator mBackdropInterpolator = new AccelerateDecelerateInterpolator();
-    public static final Interpolator ALPHA_IN = new PathInterpolator(0.4f, 0f, 1f, 1f);
-    public static final Interpolator ALPHA_OUT = new PathInterpolator(0f, 0f, 0.8f, 1f);
+    public static final Interpolator ALPHA_IN = Interpolators.ALPHA_IN;
+    public static final Interpolator ALPHA_OUT = Interpolators.ALPHA_OUT;
 
     private BackDropView mBackdrop;
     private ImageView mBackdropFront, mBackdropBack;
@@ -1847,7 +1843,7 @@
                             // if mScrimSrcModeEnabled. Note that 0.001 is rounded down to 0 in
                             // libhwui.
                             .alpha(0.002f)
-                            .setInterpolator(mBackdropInterpolator)
+                            .setInterpolator(Interpolators.ACCELERATE_DECELERATE)
                             .setDuration(300)
                             .setStartDelay(0)
                             .withEndAction(new Runnable() {
@@ -1866,7 +1862,7 @@
                                 // behind.
                                 .setDuration(mKeyguardFadingAwayDuration / 2)
                                 .setStartDelay(mKeyguardFadingAwayDelay)
-                                .setInterpolator(mLinearInterpolator)
+                                .setInterpolator(Interpolators.LINEAR)
                                 .start();
                     }
                 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/SettingsButton.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/SettingsButton.java
index 512af1b..7247b57 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/SettingsButton.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/SettingsButton.java
@@ -26,7 +26,9 @@
 import android.view.ViewConfiguration;
 import android.view.animation.Animation;
 import android.view.animation.AnimationUtils;
+
 import com.android.keyguard.AlphaOptimizedImageButton;
+import com.android.systemui.statusbar.Interpolators;
 
 public class SettingsButton extends AlphaOptimizedImageButton {
 
@@ -157,8 +159,7 @@
         performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
         mUpToSpeed = true;
         mAnimator = ObjectAnimator.ofFloat(this, View.ROTATION, 0, 360);
-        mAnimator.setInterpolator(AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.linear));
+        mAnimator.setInterpolator(Interpolators.LINEAR);
         mAnimator.setDuration(FULL_SPEED_LENGTH);
         mAnimator.setRepeatCount(Animation.INFINITE);
         mAnimator.start();
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
index 64fb066..c6537e8 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarIconController.java
@@ -32,15 +32,15 @@
 import android.util.TypedValue;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
+
 import com.android.internal.statusbar.StatusBarIcon;
 import com.android.systemui.BatteryMeterView;
 import com.android.systemui.FontSizeUtils;
 import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.NotificationData;
 import com.android.systemui.statusbar.SignalClusterView;
 import com.android.systemui.statusbar.StatusBarIconView;
@@ -63,8 +63,6 @@
 
     private Context mContext;
     private PhoneStatusBar mPhoneStatusBar;
-    private Interpolator mLinearOutSlowIn;
-    private Interpolator mFastOutSlowIn;
     private DemoStatusIcons mDemoStatusIcons;
 
     private LinearLayout mSystemIconArea;
@@ -129,10 +127,6 @@
         maybeScaleBatteryMeterView(context);
 
         mClock = (TextView) statusBar.findViewById(R.id.clock);
-        mLinearOutSlowIn = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.linear_out_slow_in);
-        mFastOutSlowIn = AnimationUtils.loadInterpolator(mContext,
-                android.R.interpolator.fast_out_slow_in);
         mDarkModeIconColorSingleTone = context.getColor(R.color.dark_mode_icon_color_single_tone);
         mLightModeIconColorSingleTone = context.getColor(R.color.light_mode_icon_color_single_tone);
         mHandler = new Handler();
@@ -348,7 +342,7 @@
                 .alpha(0f)
                 .setDuration(160)
                 .setStartDelay(0)
-                .setInterpolator(PhoneStatusBar.ALPHA_OUT)
+                .setInterpolator(Interpolators.ALPHA_OUT)
                 .withEndAction(new Runnable() {
                     @Override
                     public void run() {
@@ -370,7 +364,7 @@
         v.animate()
                 .alpha(1f)
                 .setDuration(320)
-                .setInterpolator(PhoneStatusBar.ALPHA_IN)
+                .setInterpolator(Interpolators.ALPHA_IN)
                 .setStartDelay(50)
 
                 // We need to clean up any pending end action from animateHide if we call
@@ -382,7 +376,7 @@
         if (mPhoneStatusBar.isKeyguardFadingAway()) {
             v.animate()
                     .setDuration(mPhoneStatusBar.getKeyguardFadingAwayDuration())
-                    .setInterpolator(mLinearOutSlowIn)
+                    .setInterpolator(Interpolators.LINEAR_OUT_SLOW_IN)
                     .setStartDelay(mPhoneStatusBar.getKeyguardFadingAwayDelay())
                     .start();
         }
@@ -419,7 +413,7 @@
         });
         mTintAnimator.setDuration(duration);
         mTintAnimator.setStartDelay(delay);
-        mTintAnimator.setInterpolator(mFastOutSlowIn);
+        mTintAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         mTintAnimator.start();
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/TrustDrawable.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/TrustDrawable.java
index 56c1e10..1aae496 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/TrustDrawable.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/TrustDrawable.java
@@ -16,8 +16,6 @@
 
 package com.android.systemui.statusbar.phone;
 
-import com.android.systemui.R;
-
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
@@ -31,10 +29,11 @@
 import android.graphics.PixelFormat;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
-import android.view.animation.AccelerateDecelerateInterpolator;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 
+import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
+
 public class TrustDrawable extends Drawable {
 
     private static final long ENTERING_FROM_UNSET_START_DELAY = 200;
@@ -69,10 +68,6 @@
 
     private final Animator mVisibleAnimator;
 
-    private final Interpolator mLinearOutSlowInInterpolator;
-    private final Interpolator mFastOutSlowInInterpolator;
-    private final Interpolator mAccelerateDecelerateInterpolator;
-
     public TrustDrawable(Context context) {
         Resources r = context.getResources();
         mInnerRadiusVisibleMin = r.getDimension(R.dimen.trust_circle_inner_radius_visible_min);
@@ -83,12 +78,6 @@
 
         mCurInnerRadius = mInnerRadiusEnter;
 
-        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(
-                context, android.R.interpolator.linear_out_slow_in);
-        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(
-                context, android.R.interpolator.fast_out_slow_in);
-        mAccelerateDecelerateInterpolator = new AccelerateDecelerateInterpolator();
-
         mVisibleAnimator = makeVisibleAnimator();
 
         mPaint = new Paint();
@@ -212,19 +201,19 @@
     private Animator makeVisibleAnimator() {
         return makeAnimators(mInnerRadiusVisibleMax, mInnerRadiusVisibleMin,
                 ALPHA_VISIBLE_MAX, ALPHA_VISIBLE_MIN, VISIBLE_DURATION,
-                mAccelerateDecelerateInterpolator,
+                Interpolators.ACCELERATE_DECELERATE,
                 true /* repeating */, false /* stateUpdateListener */);
     }
 
     private Animator makeEnterAnimator(float radius, int alpha) {
         return makeAnimators(radius, mInnerRadiusVisibleMax,
-                alpha, ALPHA_VISIBLE_MAX, ENTER_DURATION, mLinearOutSlowInInterpolator,
+                alpha, ALPHA_VISIBLE_MAX, ENTER_DURATION, Interpolators.LINEAR_OUT_SLOW_IN,
                 false /* repeating */, true /* stateUpdateListener */);
     }
 
     private Animator makeExitAnimator(float radius, int alpha) {
         return makeAnimators(radius, mInnerRadiusExit,
-                alpha, 0, EXIT_DURATION, mFastOutSlowInInterpolator,
+                alpha, 0, EXIT_DURATION, Interpolators.FAST_OUT_SLOW_IN,
                 false /* repeating */, true /* stateUpdateListener */);
     }
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java
index d078280..59d54ff 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/BrightnessMirrorController.java
@@ -16,15 +16,15 @@
 
 package com.android.systemui.statusbar.policy;
 
-import com.android.systemui.R;
-import com.android.systemui.statusbar.ScrimView;
-import com.android.systemui.statusbar.phone.PhoneStatusBar;
-import com.android.systemui.statusbar.phone.StatusBarWindowView;
-
 import android.view.View;
 import android.view.ViewPropertyAnimator;
 import android.widget.FrameLayout;
 
+import com.android.systemui.R;
+import com.android.systemui.statusbar.Interpolators;
+import com.android.systemui.statusbar.ScrimView;
+import com.android.systemui.statusbar.phone.StatusBarWindowView;
+
 /**
  * Controls showing and hiding of the brightness mirror.
  */
@@ -46,13 +46,13 @@
 
     public void showMirror() {
         mBrightnessMirror.setVisibility(View.VISIBLE);
-        mScrimBehind.animateViewAlpha(0.0f, TRANSITION_DURATION_OUT, PhoneStatusBar.ALPHA_OUT);
+        mScrimBehind.animateViewAlpha(0.0f, TRANSITION_DURATION_OUT, Interpolators.ALPHA_OUT);
         outAnimation(mNotificationPanel.animate())
                 .withLayer();
     }
 
     public void hideMirror() {
-        mScrimBehind.animateViewAlpha(1.0f, TRANSITION_DURATION_IN, PhoneStatusBar.ALPHA_IN);
+        mScrimBehind.animateViewAlpha(1.0f, TRANSITION_DURATION_IN, Interpolators.ALPHA_IN);
         inAnimation(mNotificationPanel.animate())
                 .withLayer()
                 .withEndAction(new Runnable() {
@@ -66,12 +66,12 @@
     private ViewPropertyAnimator outAnimation(ViewPropertyAnimator a) {
         return a.alpha(0.0f)
                 .setDuration(TRANSITION_DURATION_OUT)
-                .setInterpolator(PhoneStatusBar.ALPHA_OUT);
+                .setInterpolator(Interpolators.ALPHA_OUT);
     }
     private ViewPropertyAnimator inAnimation(ViewPropertyAnimator a) {
         return a.alpha(1.0f)
                 .setDuration(TRANSITION_DURATION_IN)
-                .setInterpolator(PhoneStatusBar.ALPHA_IN);
+                .setInterpolator(Interpolators.ALPHA_IN);
     }
 
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonRipple.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonRipple.java
index 3f63b5f..d739d6c1 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonRipple.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonRipple.java
@@ -32,7 +32,7 @@
 import android.view.animation.Interpolator;
 
 import com.android.systemui.R;
-import com.android.systemui.statusbar.phone.PhoneStatusBar;
+import com.android.systemui.statusbar.Interpolators;
 
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -59,7 +59,6 @@
     private int mMaxWidth;
 
     private final Interpolator mInterpolator = new LogInterpolator();
-    private final Interpolator mAlphaExitInterpolator = PhoneStatusBar.ALPHA_OUT;
     private boolean mSupportHardware;
     private final View mTargetView;
 
@@ -225,7 +224,7 @@
 
     private void exitSoftware() {
         ObjectAnimator alphaAnimator = ObjectAnimator.ofFloat(this, "glowAlpha", mGlowAlpha, 0f);
-        alphaAnimator.setInterpolator(mAlphaExitInterpolator);
+        alphaAnimator.setInterpolator(Interpolators.ALPHA_OUT);
         alphaAnimator.setDuration(ANIMATION_DURATION_FADE);
         alphaAnimator.addListener(mAnimatorListener);
         alphaAnimator.start();
@@ -331,7 +330,7 @@
         final RenderNodeAnimator opacityAnim = new RenderNodeAnimator(mPaintProp,
                 RenderNodeAnimator.PAINT_ALPHA, 0);
         opacityAnim.setDuration(ANIMATION_DURATION_FADE);
-        opacityAnim.setInterpolator(mAlphaExitInterpolator);
+        opacityAnim.setInterpolator(Interpolators.ALPHA_OUT);
         opacityAnim.addListener(mAnimatorListener);
         opacityAnim.setTarget(mTargetView);
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcher.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcher.java
index 5cf6156..0959b0c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcher.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcher.java
@@ -21,6 +21,7 @@
 import android.animation.ObjectAnimator;
 import android.content.Context;
 import android.database.DataSetObserver;
+import android.graphics.Interpolator;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
@@ -33,9 +34,9 @@
 import com.android.settingslib.animation.AppearAnimationUtils;
 import com.android.systemui.R;
 import com.android.systemui.qs.tiles.UserDetailItemView;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.phone.KeyguardStatusBarView;
 import com.android.systemui.statusbar.phone.NotificationPanelView;
-import com.android.systemui.statusbar.phone.PhoneStatusBar;
 
 /**
  * Manages the user switcher on the Keyguard.
@@ -73,8 +74,7 @@
             mAdapter.registerDataSetObserver(mDataSetObserver);
             mUserSwitcherController = userSwitcherController;
             mAppearAnimationUtils = new AppearAnimationUtils(context, 400, -0.5f, 0.5f,
-                    AnimationUtils.loadInterpolator(
-                            context, android.R.interpolator.fast_out_slow_in));
+                    Interpolators.FAST_OUT_SLOW_IN);
             mUserSwitcherContainer.setKeyguardUserSwitcher(this);
         } else {
             mUserSwitcherContainer = null;
@@ -158,7 +158,7 @@
         mAnimating = true;
         mBgAnimator = ObjectAnimator.ofInt(mBackground, "alpha", 0, 255);
         mBgAnimator.setDuration(400);
-        mBgAnimator.setInterpolator(PhoneStatusBar.ALPHA_IN);
+        mBgAnimator.setInterpolator(Interpolators.ALPHA_IN);
         mBgAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
@@ -174,7 +174,7 @@
         mUserSwitcher.animate()
                 .alpha(0f)
                 .setDuration(300)
-                .setInterpolator(PhoneStatusBar.ALPHA_OUT)
+                .setInterpolator(Interpolators.ALPHA_OUT)
                 .withEndAction(new Runnable() {
                     @Override
                     public void run() {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java
index a7d3506..0b865ab 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackStateAnimator.java
@@ -22,12 +22,12 @@
 import android.animation.PropertyValuesHolder;
 import android.animation.ValueAnimator;
 import android.view.View;
-import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 
 import com.android.systemui.R;
 import com.android.systemui.statusbar.ExpandableNotificationRow;
 import com.android.systemui.statusbar.ExpandableView;
+import com.android.systemui.statusbar.Interpolators;
 import com.android.systemui.statusbar.policy.HeadsUpManager;
 
 import java.util.ArrayList;
@@ -68,7 +68,6 @@
     private static final int TAG_START_HEIGHT = R.id.height_animator_start_value_tag;
     private static final int TAG_START_TOP_INSET = R.id.top_inset_animator_start_value_tag;
 
-    private final Interpolator mFastOutSlowInInterpolator;
     private final Interpolator mHeadsUpAppearInterpolator;
     private final int mGoToFullShadeAppearingTranslation;
     private final StackViewState mTmpState = new StackViewState();
@@ -95,8 +94,6 @@
 
     public StackStateAnimator(NotificationStackScrollLayout hostLayout) {
         mHostLayout = hostLayout;
-        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(hostLayout.getContext(),
-                android.R.interpolator.fast_out_slow_in);
         mGoToFullShadeAppearingTranslation =
                 hostLayout.getContext().getResources().getDimensionPixelSize(
                         R.dimen.go_to_full_shade_appearing_translation);
@@ -407,7 +404,7 @@
                         false /* notifyListeners */);
             }
         });
-        animator.setInterpolator(mFastOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         long newDuration = cancelAnimatorAndGetNewDuration(duration, previousAnimator);
         animator.setDuration(newDuration);
         if (delay > 0 && (previousAnimator == null || !previousAnimator.isRunning())) {
@@ -465,7 +462,7 @@
                 child.setClipTopAmount((int) animation.getAnimatedValue());
             }
         });
-        animator.setInterpolator(mFastOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         long newDuration = cancelAnimatorAndGetNewDuration(duration, previousAnimator);
         animator.setDuration(newDuration);
         if (delay > 0 && (previousAnimator == null || !previousAnimator.isRunning())) {
@@ -520,7 +517,7 @@
 
         ObjectAnimator animator = ObjectAnimator.ofFloat(child, View.ALPHA,
                 child.getAlpha(), newEndValue);
-        animator.setInterpolator(mFastOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         // Handle layer type
         child.setLayerType(View.LAYER_TYPE_HARDWARE, null);
         animator.addListener(new AnimatorListenerAdapter() {
@@ -591,7 +588,7 @@
 
         ObjectAnimator animator = ObjectAnimator.ofFloat(child, View.TRANSLATION_Z,
                 child.getTranslationZ(), newEndValue);
-        animator.setInterpolator(mFastOutSlowInInterpolator);
+        animator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         long newDuration = cancelAnimatorAndGetNewDuration(duration, previousAnimator);
         animator.setDuration(newDuration);
         if (delay > 0 && (previousAnimator == null || !previousAnimator.isRunning())) {
@@ -645,7 +642,7 @@
         ObjectAnimator animator = ObjectAnimator.ofFloat(child, View.TRANSLATION_Y,
                 child.getTranslationY(), newEndValue);
         Interpolator interpolator = mHeadsUpAppearChildren.contains(child) ?
-                mHeadsUpAppearInterpolator :mFastOutSlowInInterpolator;
+                mHeadsUpAppearInterpolator :Interpolators.FAST_OUT_SLOW_IN;
         animator.setInterpolator(interpolator);
         long newDuration = cancelAnimatorAndGetNewDuration(duration, previousAnimator);
         animator.setDuration(newDuration);
@@ -866,7 +863,7 @@
                         isRubberbanded);
             }
         });
-        overScrollAnimator.setInterpolator(mFastOutSlowInInterpolator);
+        overScrollAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN);
         overScrollAnimator.addListener(new AnimatorListenerAdapter() {
             @Override
             public void onAnimationEnd(Animator animation) {
diff --git a/packages/SystemUI/src/com/android/systemui/volume/IconPulser.java b/packages/SystemUI/src/com/android/systemui/volume/IconPulser.java
deleted file mode 100644
index 9438af1..0000000
--- a/packages/SystemUI/src/com/android/systemui/volume/IconPulser.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.systemui.volume;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.content.Context;
-import android.view.View;
-import android.view.animation.AnimationUtils;
-import android.view.animation.Interpolator;
-
-public class IconPulser {
-    private static final float PULSE_SCALE = 1.1f;
-
-    private final Interpolator mFastOutSlowInInterpolator;
-
-    public IconPulser(Context context) {
-        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(context,
-                android.R.interpolator.fast_out_slow_in);
-    }
-
-    public void start(final View target) {
-        if (target == null || target.getScaleX() != 1) return;  // n/a, or already running
-        target.animate().cancel();
-        target.animate().scaleX(PULSE_SCALE).scaleY(PULSE_SCALE)
-                .setInterpolator(mFastOutSlowInInterpolator)
-                .setListener(new AnimatorListenerAdapter() {
-                    @Override
-                    public void onAnimationEnd(Animator animation) {
-                        target.animate().scaleX(1).scaleY(1).setListener(null);
-                    }
-                });
-    }
-}