diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
index 48eb3e8..c74d09d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/KeyguardBouncer.java
@@ -54,8 +54,8 @@
 
     private static final String TAG = "KeyguardBouncer";
     static final float ALPHA_EXPANSION_THRESHOLD = 0.95f;
-    private static final float EXPANSION_HIDDEN = 1f;
-    private static final float EXPANSION_VISIBLE = 0f;
+    static final float EXPANSION_HIDDEN = 1f;
+    static final float EXPANSION_VISIBLE = 0f;
 
     protected final Context mContext;
     protected final ViewMediatorCallback mCallback;
@@ -86,6 +86,7 @@
     private boolean mShowingSoon;
     private int mBouncerPromptReason;
     private boolean mIsAnimatingAway;
+    private boolean mIsScrimmed;
 
     public KeyguardBouncer(Context context, ViewMediatorCallback callback,
             LockPatternUtils lockPatternUtils, ViewGroup container,
@@ -103,17 +104,17 @@
     }
 
     public void show(boolean resetSecuritySelection) {
-        show(resetSecuritySelection, true /* animated */);
+        show(resetSecuritySelection, true /* scrimmed */);
     }
 
     /**
      * Shows the bouncer.
      *
      * @param resetSecuritySelection Cleans keyguard view
-     * @param animated true when the bouncer show show animated, false when the user will be
-     *                 dragging it and animation should be deferred.
+     * @param isScrimmed true when the bouncer show show scrimmed, false when the user will be
+     *                 dragging it and translation should be deferred.
      */
-    public void show(boolean resetSecuritySelection, boolean animated) {
+    public void show(boolean resetSecuritySelection, boolean isScrimmed) {
         final int keyguardUserId = KeyguardUpdateMonitor.getCurrentUser();
         if (keyguardUserId == UserHandle.USER_SYSTEM && UserManager.isSplitSystemUser()) {
             // In split system user mode, we never unlock system user.
@@ -126,9 +127,10 @@
         // are valid.
         // Later, at the end of the animation, when the bouncer is at the top of the screen,
         // onFullyShown() will be called and FalsingManager will stop recording touches.
-        if (animated) {
+        if (isScrimmed) {
             setExpansion(EXPANSION_VISIBLE);
         }
+        mIsScrimmed = isScrimmed;
 
         if (resetSecuritySelection) {
             // showPrimarySecurityScreen() updates the current security method. This is needed in
@@ -164,6 +166,10 @@
         mCallback.onBouncerVisiblityChanged(true /* shown */);
     }
 
+    public boolean isShowingScrimmed() {
+        return isShowing() && mIsScrimmed;
+    }
+
     /**
      * This method must be called at the end of the bouncer animation when
      * the translation is performed manually by the user, otherwise FalsingManager
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 347a4b0..5b3b59b 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PanelView.java
@@ -947,17 +947,6 @@
         return mClosing || mLaunchingNotification;
     }
 
-    /**
-     * Bouncer might need a scrim when you double tap on notifications or edit QS.
-     * On other cases, when you drag up the bouncer with the finger or just fling,
-     * the scrim should be hidden to avoid occluding the clock.
-     *
-     * @return true when we need a scrim to show content on top of the notification panel.
-     */
-    public boolean needsScrimming() {
-        return !isTracking() && !isCollapsing() && !isFullyCollapsed();
-    }
-
     public boolean isTracking() {
         return mTracking;
     }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
index 9eeb4d2..38a1c9e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -3977,12 +3977,12 @@
     private void showBouncerIfKeyguard() {
         if ((mState == StatusBarState.KEYGUARD || mState == StatusBarState.SHADE_LOCKED)
                 && !mKeyguardViewMediator.isHiding()) {
-            showBouncer(true /* animated */);
+            showBouncer(true /* scrimmed */);
         }
     }
 
-    protected void showBouncer(boolean animated) {
-        mStatusBarKeyguardViewManager.showBouncer(animated);
+    protected void showBouncer(boolean scrimmed) {
+        mStatusBarKeyguardViewManager.showBouncer(scrimmed);
     }
 
     private void instantExpandNotificationsPanel() {
@@ -4096,7 +4096,7 @@
     public void onTrackingStopped(boolean expand) {
         if (mState == StatusBarState.KEYGUARD || mState == StatusBarState.SHADE_LOCKED) {
             if (!expand && !mUnlockMethodCache.canSkipBouncer()) {
-                showBouncer(false /* animated */);
+                showBouncer(false /* scrimmed */);
             }
         }
     }
@@ -4235,7 +4235,7 @@
     @Override
     public void onLockedRemoteInput(ExpandableNotificationRow row, View clicked) {
         mLeaveOpenOnKeyguardHide = true;
-        showBouncer(true /* animated */);
+        showBouncer(true /* scrimmed */);
         mPendingRemoteInputView = clicked;
     }
 
@@ -4705,7 +4705,7 @@
             // Bouncer needs the front scrim when it's on top of an activity,
             // tapping on a notification, editing QS or being dismissed by
             // FLAG_DISMISS_KEYGUARD_ACTIVITY.
-            ScrimState state = mIsOccluded || mNotificationPanel.needsScrimming()
+            ScrimState state = mStatusBarKeyguardViewManager.bouncerNeedsScrimming()
                     || mStatusBarKeyguardViewManager.willDismissWithAction()
                     || mStatusBarKeyguardViewManager.isFullscreenBouncer() ?
                     ScrimState.BOUNCER_SCRIMMED : ScrimState.BOUNCER;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
index b517d11..6a6a7dd 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
@@ -31,6 +31,7 @@
 import android.view.ViewRootImpl;
 import android.view.WindowManagerGlobal;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.LatencyTracker;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.keyguard.KeyguardUpdateMonitor;
@@ -158,7 +159,8 @@
         mNotificationPanelView.setBouncerTop(mBouncer.getTop());
     }
 
-    private void onPanelExpansionChanged(float expansion, boolean tracking) {
+    @VisibleForTesting
+    void onPanelExpansionChanged(float expansion, boolean tracking) {
         // We don't want to translate the bounce when:
         // • Keyguard is occluded, because we're in a FLAG_SHOW_WHEN_LOCKED activity and need to
         //   conserve the original animation.
@@ -166,13 +168,14 @@
         // • Keyguard will be dismissed by an action. a.k.a: FLAG_DISMISS_KEYGUARD_ACTIVITY
         // • Full-screen user switcher is displayed.
         if (mNotificationPanelView.isUnlockHintRunning()) {
-            mBouncer.setExpansion(1);
-        } else if (mOccluded || mBouncer.willDismissWithAction()
+            mBouncer.setExpansion(KeyguardBouncer.EXPANSION_HIDDEN);
+        } else if (mBouncer.willDismissWithAction() || mBouncer.isShowingScrimmed()
                 || mStatusBar.isFullScreenUserSwitcherState()) {
-            mBouncer.setExpansion(0);
+            mBouncer.setExpansion(KeyguardBouncer.EXPANSION_VISIBLE);
         } else if (mShowing && !mDozing) {
             mBouncer.setExpansion(expansion);
-            if (expansion != 1 && tracking && mStatusBar.isKeyguardCurrentlySecure()
+            if (expansion != KeyguardBouncer.EXPANSION_HIDDEN && tracking
+                    && mStatusBar.isKeyguardCurrentlySecure()
                     && !mBouncer.isShowing() && !mBouncer.isAnimatingAway()) {
                 mBouncer.show(false /* resetSecuritySelection */, false /* animated */);
             }
@@ -215,9 +218,9 @@
         cancelPendingWakeupAction();
     }
 
-    public void showBouncer(boolean animated) {
-        if (mShowing) {
-            mBouncer.show(false /* resetSecuritySelection */, animated);
+    public void showBouncer(boolean scrimmed) {
+        if (mShowing && !mBouncer.isShowing()) {
+            mBouncer.show(false /* resetSecuritySelection */, scrimmed);
         }
         updateStates();
     }
@@ -725,6 +728,10 @@
         return mBouncer.willDismissWithAction();
     }
 
+    public boolean bouncerNeedsScrimming() {
+        return mBouncer.isShowingScrimmed();
+    }
+
     public void dump(PrintWriter pw) {
         pw.println("StatusBarKeyguardViewManager:");
         pw.println("  mShowing: " + mShowing);
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/KeyguardBouncerTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/KeyguardBouncerTest.java
index 73f05c4..12b14c8 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/KeyguardBouncerTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/KeyguardBouncerTest.java
@@ -16,6 +16,8 @@
 
 package com.android.systemui.statusbar.phone;
 
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.ArgumentMatchers.anyFloat;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
@@ -326,6 +328,14 @@
     }
 
     @Test
+    public void testIsShowingScrimmed() {
+        mBouncer.show(false /* resetSecuritySelection */, true /* animate */);
+        assertThat(mBouncer.isShowingScrimmed()).isTrue();
+        mBouncer.show(false /* resetSecuritySelection */, false /* animate */);
+        assertThat(mBouncer.isShowingScrimmed()).isFalse();
+    }
+
+    @Test
     public void testWillDismissWithAction() {
         mBouncer.ensureView();
         Assert.assertFalse("Action not set yet", mBouncer.willDismissWithAction());
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java
new file mode 100644
index 0000000..e2e5b32
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManagerTest.java
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2018 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.phone;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.reset;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyZeroInteractions;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.support.test.filters.SmallTest;
+import android.testing.AndroidTestingRunner;
+import android.testing.TestableLooper;
+import android.view.ViewGroup;
+
+import com.android.internal.widget.LockPatternUtils;
+import com.android.keyguard.KeyguardHostView;
+import com.android.keyguard.ViewMediatorCallback;
+import com.android.systemui.SysuiTestCase;
+import com.android.systemui.keyguard.DismissCallbackRegistry;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@SmallTest
+@RunWith(AndroidTestingRunner.class)
+@TestableLooper.RunWithLooper
+public class StatusBarKeyguardViewManagerTest extends SysuiTestCase {
+
+    @Mock
+    private ViewMediatorCallback mViewMediatorCallback;
+    @Mock
+    private LockPatternUtils mLockPatternUtils;
+    @Mock
+    private KeyguardBouncer mBouncer;
+    @Mock
+    private StatusBar mStatusBar;
+    @Mock
+    private ViewGroup mContainer;
+    @Mock
+    private NotificationPanelView mNotificationPanelView;
+    @Mock
+    private FingerprintUnlockController mFingerprintUnlockController;
+    @Mock
+    private DismissCallbackRegistry mDismissCallbackRegistry;
+    private StatusBarKeyguardViewManager mStatusBarKeyguardViewManager;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mDependency.injectMockDependency(StatusBarWindowManager.class);
+        mStatusBarKeyguardViewManager = new TestableStatusBarKeyguardViewManager(getContext(),
+                mViewMediatorCallback, mLockPatternUtils);
+        mStatusBarKeyguardViewManager.registerStatusBar(mStatusBar, mContainer,
+                mNotificationPanelView, mFingerprintUnlockController, mDismissCallbackRegistry);
+        mStatusBarKeyguardViewManager.show(null);
+    }
+
+    @Test
+    public void dismissWithAction_AfterKeyguardGoneSetToFalse() {
+        KeyguardHostView.OnDismissAction action = () -> false;
+        Runnable cancelAction = () -> {};
+        mStatusBarKeyguardViewManager.dismissWithAction(action, cancelAction,
+                false /* afterKeyguardGone */);
+        verify(mBouncer).showWithDismissAction(eq(action), eq(cancelAction));
+    }
+
+    @Test
+    public void showBouncer_onlyWhenShowing() {
+        mStatusBarKeyguardViewManager.hide(0 /* startTime */, 0 /* fadeoutDuration */);
+        mStatusBar.showBouncer(true /* scrimmed */);
+        verify(mBouncer, never()).show(anyBoolean(), anyBoolean());
+        verify(mBouncer, never()).show(anyBoolean());
+    }
+
+    @Test
+    public void showBouncer_notWhenBouncerAlreadyShowing() {
+        mStatusBarKeyguardViewManager.hide(0 /* startTime */, 0 /* fadeoutDuration */);
+        when(mBouncer.isSecure()).thenReturn(true);
+        mStatusBar.showBouncer(true /* scrimmed */);
+        verify(mBouncer, never()).show(anyBoolean(), anyBoolean());
+        verify(mBouncer, never()).show(anyBoolean());
+    }
+
+    @Test
+    public void showBouncer_showsTheBouncer() {
+        mStatusBarKeyguardViewManager.showBouncer(true /* scrimmed */);
+        verify(mBouncer).show(anyBoolean(), eq(true));
+    }
+
+    @Test
+    public void onPanelExpansionChanged_neverHidesFullscreenBouncer() {
+        // TODO: StatusBar should not be here, mBouncer.isFullscreenBouncer() should do the same.
+        when(mStatusBar.isFullScreenUserSwitcherState()).thenReturn(true);
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */,
+                true /* tracking */);
+        verify(mBouncer).setExpansion(eq(KeyguardBouncer.EXPANSION_VISIBLE));
+    }
+
+    @Test
+    public void onPanelExpansionChanged_neverHidesScrimmedBouncer() {
+        when(mBouncer.isShowingScrimmed()).thenReturn(true);
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */,
+                true /* tracking */);
+        verify(mBouncer).setExpansion(eq(KeyguardBouncer.EXPANSION_VISIBLE));
+    }
+
+    @Test
+    public void onPanelExpansionChanged_neverShowsDuringHintAnimation() {
+        when(mNotificationPanelView.isUnlockHintRunning()).thenReturn(true);
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */,
+                true /* tracking */);
+        verify(mBouncer).setExpansion(eq(KeyguardBouncer.EXPANSION_HIDDEN));
+    }
+
+    @Test
+    public void onPanelExpansionChanged_propagatesToBouncer() {
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */,
+                true /* tracking */);
+        verify(mBouncer).setExpansion(eq(0.5f));
+    }
+
+    @Test
+    public void onPanelExpansionChanged_showsBouncerWhenSwiping() {
+        when(mStatusBar.isKeyguardCurrentlySecure()).thenReturn(true);
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */,
+                true /* tracking */);
+        verify(mBouncer).show(eq(false), eq(false));
+
+        // But not when it's already visible
+        reset(mBouncer);
+        when(mBouncer.isShowing()).thenReturn(true);
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */, true /* tracking */);
+        verify(mBouncer, never()).show(eq(false), eq(false));
+
+        // Or animating away
+        reset(mBouncer);
+        when(mBouncer.isAnimatingAway()).thenReturn(true);
+        mStatusBarKeyguardViewManager.onPanelExpansionChanged(0.5f /* expansion */, true /* tracking */);
+        verify(mBouncer, never()).show(eq(false), eq(false));
+    }
+
+    private class TestableStatusBarKeyguardViewManager extends StatusBarKeyguardViewManager {
+
+        public TestableStatusBarKeyguardViewManager(Context context,
+                ViewMediatorCallback callback,
+                LockPatternUtils lockPatternUtils) {
+            super(context, callback, lockPatternUtils);
+        }
+
+        @Override
+        public void registerStatusBar(StatusBar statusBar, ViewGroup container,
+                NotificationPanelView notificationPanelView,
+                FingerprintUnlockController fingerprintUnlockController,
+                DismissCallbackRegistry dismissCallbackRegistry) {
+            super.registerStatusBar(statusBar, container, notificationPanelView,
+                    fingerprintUnlockController, dismissCallbackRegistry);
+            mBouncer = StatusBarKeyguardViewManagerTest.this.mBouncer;
+        }
+    }
+}
\ No newline at end of file