Add differentiating transitions for returning/reentering.
Bug 16550363
Change-Id: I85f9a8bcbc92ce048d06b36579bb05893534f7f8
diff --git a/api/current.txt b/api/current.txt
index c5027ae..c425246 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -1435,8 +1435,12 @@
field public static final int windowNoDisplay = 16843294; // 0x101021e
field public static final int windowNoTitle = 16842838; // 0x1010056
field public static final int windowOverscan = 16843727; // 0x10103cf
+ field public static final int windowReenterTransition = 16843954; // 0x10104b2
+ field public static final int windowReturnTransition = 16843953; // 0x10104b1
field public static final int windowSharedElementEnterTransition = 16843835; // 0x101043b
field public static final int windowSharedElementExitTransition = 16843836; // 0x101043c
+ field public static final int windowSharedElementReenterTransition = 16843956; // 0x10104b4
+ field public static final int windowSharedElementReturnTransition = 16843955; // 0x10104b3
field public static final int windowShowAnimation = 16842934; // 0x10100b6
field public static final int windowShowWallpaper = 16843410; // 0x1010292
field public static final int windowSoftInputMode = 16843307; // 0x101022b
@@ -35319,8 +35323,12 @@
method protected final int getLocalFeatures();
method public android.media.session.MediaController getMediaController();
method public abstract int getNavigationBarColor();
+ method public android.transition.Transition getReenterTransition();
+ method public android.transition.Transition getReturnTransition();
method public android.transition.Transition getSharedElementEnterTransition();
method public android.transition.Transition getSharedElementExitTransition();
+ method public android.transition.Transition getSharedElementReenterTransition();
+ method public android.transition.Transition getSharedElementReturnTransition();
method public abstract int getStatusBarColor();
method public long getTransitionBackgroundFadeDuration();
method public android.transition.TransitionManager getTransitionManager();
@@ -35376,8 +35384,12 @@
method public void setLogo(int);
method public void setMediaController(android.media.session.MediaController);
method public abstract void setNavigationBarColor(int);
+ method public void setReenterTransition(android.transition.Transition);
+ method public void setReturnTransition(android.transition.Transition);
method public void setSharedElementEnterTransition(android.transition.Transition);
method public void setSharedElementExitTransition(android.transition.Transition);
+ method public void setSharedElementReenterTransition(android.transition.Transition);
+ method public void setSharedElementReturnTransition(android.transition.Transition);
method public void setSoftInputMode(int);
method public abstract void setStatusBarColor(int);
method public abstract void setTitle(java.lang.CharSequence);
diff --git a/core/java/android/app/EnterTransitionCoordinator.java b/core/java/android/app/EnterTransitionCoordinator.java
index 1326064..b5d362d 100644
--- a/core/java/android/app/EnterTransitionCoordinator.java
+++ b/core/java/android/app/EnterTransitionCoordinator.java
@@ -256,7 +256,7 @@
@Override
protected Transition getViewsTransition() {
if (mIsReturning) {
- return getWindow().getExitTransition();
+ return getWindow().getReenterTransition();
} else {
return getWindow().getEnterTransition();
}
@@ -264,7 +264,7 @@
protected Transition getSharedElementTransition() {
if (mIsReturning) {
- return getWindow().getSharedElementExitTransition();
+ return getWindow().getSharedElementReenterTransition();
} else {
return getWindow().getSharedElementEnterTransition();
}
diff --git a/core/java/android/app/ExitTransitionCoordinator.java b/core/java/android/app/ExitTransitionCoordinator.java
index 2ce6018..b3fdcc7 100644
--- a/core/java/android/app/ExitTransitionCoordinator.java
+++ b/core/java/android/app/ExitTransitionCoordinator.java
@@ -395,7 +395,7 @@
@Override
protected Transition getViewsTransition() {
if (mIsReturning) {
- return getWindow().getEnterTransition();
+ return getWindow().getReturnTransition();
} else {
return getWindow().getExitTransition();
}
@@ -403,7 +403,7 @@
protected Transition getSharedElementTransition() {
if (mIsReturning) {
- return getWindow().getSharedElementEnterTransition();
+ return getWindow().getSharedElementReturnTransition();
} else {
return getWindow().getSharedElementExitTransition();
}
diff --git a/core/java/android/view/Window.java b/core/java/android/view/Window.java
index c169d35..e7b3152 100644
--- a/core/java/android/view/Window.java
+++ b/core/java/android/view/Window.java
@@ -1425,6 +1425,21 @@
public void setEnterTransition(Transition transition) {}
/**
+ * Sets the Transition that will be used to move Views out of the scene when the Window is
+ * preparing to close, for example after a call to
+ * {@link android.app.Activity#finishAfterTransition()}. The exiting
+ * Views will be those that are regular Views or ViewGroups that have
+ * {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend
+ * {@link android.transition.Visibility} as entering is governed by changing visibility from
+ * {@link View#VISIBLE} to {@link View#INVISIBLE}. If <code>transition</code> is null,
+ * entering Views will remain unaffected. If nothing is set, the default will be to
+ * use the same value as set in {@link #setEnterTransition(android.transition.Transition)}.
+ * @param transition The Transition to use to move Views out of the Scene when the Window
+ * is preparing to close.
+ */
+ public void setReturnTransition(Transition transition) {}
+
+ /**
* Sets the Transition that will be used to move Views out of the scene when starting a
* new Activity. The exiting Views will be those that are regular Views or ViewGroups that
* have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend
@@ -1437,6 +1452,20 @@
public void setExitTransition(Transition transition) {}
/**
+ * Sets the Transition that will be used to move Views in to the scene when returning from
+ * a previously-started Activity. The entering Views will be those that are regular Views
+ * or ViewGroups that have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions
+ * will extend {@link android.transition.Visibility} as exiting is governed by changing
+ * visibility from {@link View#VISIBLE} to {@link View#INVISIBLE}. If transition is null,
+ * the views will remain unaffected. If nothing is set, the default will be to use the same
+ * transition as {@link #setExitTransition(android.transition.Transition)}.
+ * Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
+ * @param transition The Transition to use to move Views into the scene when reentering from a
+ * previously-started Activity.
+ */
+ public void setReenterTransition(Transition transition) {}
+
+ /**
* Returns the transition used to move Views into the initial scene. The entering
* Views will be those that are regular Views or ViewGroups that have
* {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend
@@ -1449,6 +1478,19 @@
public Transition getEnterTransition() { return null; }
/**
+ * Returns he Transition that will be used to move Views out of the scene when the Window is
+ * preparing to close, for example after a call to
+ * {@link android.app.Activity#finishAfterTransition()}. The exiting
+ * Views will be those that are regular Views or ViewGroups that have
+ * {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend
+ * {@link android.transition.Visibility} as entering is governed by changing visibility from
+ * {@link View#VISIBLE} to {@link View#INVISIBLE}.
+ * @return The Transition to use to move Views out of the Scene when the Window
+ * is preparing to close.
+ */
+ public Transition getReturnTransition() { return null; }
+
+ /**
* Returns the Transition that will be used to move Views out of the scene when starting a
* new Activity. The exiting Views will be those that are regular Views or ViewGroups that
* have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions will extend
@@ -1461,6 +1503,18 @@
public Transition getExitTransition() { return null; }
/**
+ * Returns the Transition that will be used to move Views in to the scene when returning from
+ * a previously-started Activity. The entering Views will be those that are regular Views
+ * or ViewGroups that have {@link ViewGroup#isTransitionGroup} return true. Typical Transitions
+ * will extend {@link android.transition.Visibility} as exiting is governed by changing
+ * visibility from {@link View#VISIBLE} to {@link View#INVISIBLE}.
+ * Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
+ * @return The Transition to use to move Views into the scene when reentering from a
+ * previously-started Activity.
+ */
+ public Transition getReenterTransition() { return null; }
+
+ /**
* Sets the Transition that will be used for shared elements transferred into the content
* Scene. Typical Transitions will affect size and location, such as
* {@link android.transition.ChangeBounds}. A null
@@ -1472,6 +1526,19 @@
public void setSharedElementEnterTransition(Transition transition) {}
/**
+ * Sets the Transition that will be used for shared elements transferred back to a
+ * calling Activity. Typical Transitions will affect size and location, such as
+ * {@link android.transition.ChangeBounds}. A null
+ * value will cause transferred shared elements to blink to the final position.
+ * If no value is set, the default will be to use the same value as
+ * {@link #setSharedElementEnterTransition(android.transition.Transition)}.
+ * Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
+ * @param transition The Transition to use for shared elements transferred out of the content
+ * Scene.
+ */
+ public void setSharedElementReturnTransition(Transition transition) {}
+
+ /**
* Returns the Transition that will be used for shared elements transferred into the content
* Scene. Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
* @return Transition to use for sharend elements transferred into the content Scene.
@@ -1479,6 +1546,13 @@
public Transition getSharedElementEnterTransition() { return null; }
/**
+ * Returns the Transition that will be used for shared elements transferred back to a
+ * calling Activity. Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
+ * @return Transition to use for sharend elements transferred into the content Scene.
+ */
+ public Transition getSharedElementReturnTransition() { return null; }
+
+ /**
* Sets the Transition that will be used for shared elements after starting a new Activity
* before the shared elements are transferred to the called Activity. If the shared elements
* must animate during the exit transition, this Transition should be used. Upon completion,
@@ -1490,6 +1564,17 @@
public void setSharedElementExitTransition(Transition transition) {}
/**
+ * Sets the Transition that will be used for shared elements reentering from a started
+ * Activity after it has returned the shared element to it start location. If no value
+ * is set, this will default to
+ * {@link #setSharedElementExitTransition(android.transition.Transition)}.
+ * Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
+ * @param transition The Transition to use for shared elements in the launching Window
+ * after the shared element has returned to the Window.
+ */
+ public void setSharedElementReenterTransition(Transition transition) {}
+
+ /**
* Returns the Transition to use for shared elements in the launching Window prior
* to transferring to the launched Activity's Window.
* Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
@@ -1500,6 +1585,16 @@
public Transition getSharedElementExitTransition() { return null; }
/**
+ * Returns the Transition that will be used for shared elements reentering from a started
+ * Activity after it has returned the shared element to it start location.
+ * Requires {@link #FEATURE_CONTENT_TRANSITIONS}.
+ *
+ * @return the Transition that will be used for shared elements reentering from a started
+ * Activity after it has returned the shared element to it start location.
+ */
+ public Transition getSharedElementReenterTransition() { return null; }
+
+ /**
* Controls how the transition set in
* {@link #setEnterTransition(android.transition.Transition)} overlaps with the exit
* transition of the calling Activity. When true, the transition will start as soon as possible.
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 5cb3068..d07d0ab 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -464,24 +464,48 @@
<attr name="windowEnterTransition" format="reference"/>
<!-- Reference to a Transition XML resource defining the desired Transition
+ used to move Views out of the scene when the Window is
+ preparing to close. Corresponds to
+ {@link android.view.Window#setReturnTransition(android.transition.Transition)}. -->
+ <attr name="windowReturnTransition" format="reference"/>
+
+ <!-- Reference to a Transition XML resource defining the desired Transition
used to move Views out of the Window's content Scene when launching a new Activity.
Corresponds to
{@link android.view.Window#setExitTransition(android.transition.Transition)}. -->
<attr name="windowExitTransition" format="reference"/>
<!-- Reference to a Transition XML resource defining the desired Transition
+ used to move Views in to the scene when returning from a previously-started Activity.
+ Corresponds to
+ {@link android.view.Window#setReenterTransition(android.transition.Transition)}. -->
+ <attr name="windowReenterTransition" format="reference"/>
+
+ <!-- Reference to a Transition XML resource defining the desired Transition
used to move shared elements transferred into the Window's initial content Scene.
Corresponds to {@link android.view.Window#setSharedElementEnterTransition(
android.transition.Transition)}. -->
<attr name="windowSharedElementEnterTransition" format="reference"/>
<!-- Reference to a Transition XML resource defining the desired Transition
+ used to move shared elements transferred back to a calling Activity.
+ Corresponds to {@link android.view.Window#setSharedElementReturnTransition(
+ android.transition.Transition)}. -->
+ <attr name="windowSharedElementReturnTransition" format="reference"/>
+
+ <!-- Reference to a Transition XML resource defining the desired Transition
used when starting a new Activity to move shared elements prior to transferring
to the called Activity.
Corresponds to {@link android.view.Window#setSharedElementExitTransition(
android.transition.Transition)}. -->
<attr name="windowSharedElementExitTransition" format="reference"/>
+ <!-- Reference to a Transition XML resource defining the desired Transition
+ used for shared elements transferred back to a calling Activity.
+ Corresponds to {@link android.view.Window#setSharedElementReenterTransition(
+ android.transition.Transition)}. -->
+ <attr name="windowSharedElementReenterTransition" format="reference"/>
+
<!-- Flag indicating whether this Window's transition should overlap with
the exiting transition of the calling Activity. Corresponds to
{@link android.view.Window#setAllowEnterTransitionOverlap(boolean)}. -->
@@ -1751,30 +1775,54 @@
or a fraction of the screen size in that dimension. -->
<attr name="windowFixedHeightMajor" format="dimension|fraction" />
<attr name="windowOutsetBottom" format="dimension" />
- <!-- Reference to a TransitionManager XML resource defining the desired Transition
+ <!-- Reference to a Transition XML resource defining the desired Transition
used to move Views into the initial Window's content Scene. Corresponds to
{@link android.view.Window#setEnterTransition(android.transition.Transition)}. -->
<attr name="windowEnterTransition"/>
- <!-- Reference to a TransitionManager XML resource defining the desired Transition
+ <!-- Reference to a Transition XML resource defining the desired Transition
+ used to move Views out of the scene when the Window is
+ preparing to close. Corresponds to
+ {@link android.view.Window#setReturnTransition(android.transition.Transition)}. -->
+ <attr name="windowReturnTransition"/>
+
+ <!-- Reference to a Transition XML resource defining the desired Transition
used to move Views out of the Window's content Scene when launching a new Activity.
Corresponds to
{@link android.view.Window#setExitTransition(android.transition.Transition)}. -->
<attr name="windowExitTransition"/>
- <!-- Reference to a TransitionManager XML resource defining the desired Transition
+ <!-- Reference to a Transition XML resource defining the desired Transition
+ used to move Views in to the scene when returning from a previously-started Activity.
+ Corresponds to
+ {@link android.view.Window#setReenterTransition(android.transition.Transition)}. -->
+ <attr name="windowReenterTransition"/>
+
+ <!-- Reference to a Transition XML resource defining the desired Transition
used to move shared elements transferred into the Window's initial content Scene.
Corresponds to {@link android.view.Window#setSharedElementEnterTransition(
android.transition.Transition)}. -->
<attr name="windowSharedElementEnterTransition"/>
- <!-- Reference to a TransitionManager XML resource defining the desired Transition
+ <!-- Reference to a Transition XML resource defining the desired Transition
+ used to move shared elements transferred back to a calling Activity.
+ Corresponds to {@link android.view.Window#setSharedElementReturnTransition(
+ android.transition.Transition)}. -->
+ <attr name="windowSharedElementReturnTransition"/>
+
+ <!-- Reference to a Transition XML resource defining the desired Transition
used when starting a new Activity to move shared elements prior to transferring
to the called Activity.
Corresponds to {@link android.view.Window#setSharedElementExitTransition(
android.transition.Transition)}. -->
<attr name="windowSharedElementExitTransition"/>
+ <!-- Reference to a Transition XML resource defining the desired Transition
+ used for shared elements transferred back to a calling Activity.
+ Corresponds to {@link android.view.Window#setSharedElementReenterTransition(
+ android.transition.Transition)}. -->
+ <attr name="windowSharedElementReenterTransition"/>
+
<!-- Flag indicating whether this Window's transition should overlap with
the exiting transition of the calling Activity. Corresponds to
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 0cb14e3..d8f9665 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2265,6 +2265,10 @@
<public type="attr" name="windowClipToOutline" />
<public type="attr" name="datePickerDialogTheme" />
<public type="attr" name="showText" />
+ <public type="attr" name="windowReturnTransition" />
+ <public type="attr" name="windowReenterTransition" />
+ <public type="attr" name="windowSharedElementReturnTransition" />
+ <public type="attr" name="windowSharedElementReenterTransition" />
<public-padding type="dimen" name="l_resource_pad" end="0x01050010" />
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindow.java b/policy/src/com/android/internal/policy/impl/PhoneWindow.java
index fdc91a4..ff3cd9d 100644
--- a/policy/src/com/android/internal/policy/impl/PhoneWindow.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindow.java
@@ -50,7 +50,6 @@
import android.graphics.drawable.Drawable;
import android.media.AudioManager;
import android.media.session.MediaController;
-import android.media.session.MediaSession;
import android.media.session.MediaSessionLegacyHelper;
import android.net.Uri;
import android.os.Bundle;
@@ -63,6 +62,7 @@
import android.transition.Transition;
import android.transition.TransitionInflater;
import android.transition.TransitionManager;
+import android.transition.TransitionSet;
import android.util.AndroidRuntimeException;
import android.util.DisplayMetrics;
import android.util.EventLog;
@@ -126,6 +126,8 @@
(1 << FEATURE_CONTENT_TRANSITIONS) |
(1 << FEATURE_ACTION_MODE_OVERLAY);
+ private static final Transition USE_DEFAULT_TRANSITION = new TransitionSet();
+
/**
* Simple callback used by the context menu and its submenus. The options
* menu submenus do not use this (their behavior is more complex).
@@ -254,10 +256,14 @@
}
};
- private Transition mEnterTransition;
- private Transition mExitTransition;
- private Transition mSharedElementEnterTransition;
- private Transition mSharedElementExitTransition;
+ private Transition mEnterTransition = null;
+ private Transition mReturnTransition = USE_DEFAULT_TRANSITION;
+ private Transition mExitTransition = null;
+ private Transition mReenterTransition = USE_DEFAULT_TRANSITION;
+ private Transition mSharedElementEnterTransition = null;
+ private Transition mSharedElementReturnTransition = USE_DEFAULT_TRANSITION;
+ private Transition mSharedElementExitTransition = null;
+ private Transition mSharedElementReenterTransition = USE_DEFAULT_TRANSITION;
private Boolean mAllowExitTransitionOverlap;
private Boolean mAllowEnterTransitionOverlap;
private long mBackgroundFadeDurationMillis = -1;
@@ -3513,40 +3519,47 @@
}
}
- mEnterTransition = getTransition(mEnterTransition,
+ mEnterTransition = getTransition(mEnterTransition, null,
R.styleable.Window_windowEnterTransition);
- mExitTransition = getTransition(mExitTransition,
+ mReturnTransition = getTransition(mReturnTransition, USE_DEFAULT_TRANSITION,
+ R.styleable.Window_windowReturnTransition);
+ mExitTransition = getTransition(mExitTransition, null,
R.styleable.Window_windowExitTransition);
- mSharedElementEnterTransition = getTransition(mSharedElementEnterTransition,
+ mReenterTransition = getTransition(mReenterTransition, USE_DEFAULT_TRANSITION,
+ R.styleable.Window_windowReenterTransition);
+ mSharedElementEnterTransition = getTransition(mSharedElementEnterTransition, null,
R.styleable.Window_windowSharedElementEnterTransition);
- mSharedElementExitTransition = getTransition(mSharedElementExitTransition,
+ mSharedElementReturnTransition = getTransition(mSharedElementReturnTransition,
+ USE_DEFAULT_TRANSITION,
+ R.styleable.Window_windowSharedElementReturnTransition);
+ mSharedElementExitTransition = getTransition(mSharedElementExitTransition, null,
R.styleable.Window_windowSharedElementExitTransition);
+ mSharedElementReenterTransition = getTransition(mSharedElementReenterTransition,
+ USE_DEFAULT_TRANSITION,
+ R.styleable.Window_windowSharedElementReenterTransition);
if (mAllowEnterTransitionOverlap == null) {
mAllowEnterTransitionOverlap = getWindowStyle().getBoolean(
- R.styleable.
- Window_windowAllowEnterTransitionOverlap, true);
+ R.styleable.Window_windowAllowEnterTransitionOverlap, true);
}
if (mAllowExitTransitionOverlap == null) {
mAllowExitTransitionOverlap = getWindowStyle().getBoolean(
- R.styleable.
- Window_windowAllowExitTransitionOverlap, true);
+ R.styleable.Window_windowAllowExitTransitionOverlap, true);
}
if (mBackgroundFadeDurationMillis < 0) {
mBackgroundFadeDurationMillis = getWindowStyle().getInteger(
- R.styleable.
- Window_windowTransitionBackgroundFadeDuration,
+ R.styleable.Window_windowTransitionBackgroundFadeDuration,
DEFAULT_BACKGROUND_FADE_DURATION_MS);
}
}
}
}
- private Transition getTransition(Transition currentValue, int id) {
- if (currentValue != null) {
+ private Transition getTransition(Transition currentValue, Transition defaultValue, int id) {
+ if (currentValue != defaultValue) {
return currentValue;
}
int transitionId = getWindowStyle().getResourceId(id, -1);
- Transition transition = null;
+ Transition transition = defaultValue;
if (transitionId != -1 && transitionId != R.transition.no_transition) {
TransitionInflater inflater = TransitionInflater.from(getContext());
transition = inflater.inflateTransition(transitionId);
@@ -3899,41 +3912,85 @@
}
@Override
+ public void setReturnTransition(Transition transition) {
+ mReturnTransition = transition;
+ }
+
+ @Override
public void setExitTransition(Transition exitTransition) {
mExitTransition = exitTransition;
}
@Override
+ public void setReenterTransition(Transition transition) {
+ mReenterTransition = transition;
+ }
+
+ @Override
public void setSharedElementEnterTransition(Transition sharedElementEnterTransition) {
mSharedElementEnterTransition = sharedElementEnterTransition;
}
@Override
+ public void setSharedElementReturnTransition(Transition transition) {
+ mSharedElementReturnTransition = transition;
+ }
+
+ @Override
public void setSharedElementExitTransition(Transition sharedElementExitTransition) {
mSharedElementExitTransition = sharedElementExitTransition;
}
@Override
+ public void setSharedElementReenterTransition(Transition transition) {
+ mSharedElementReenterTransition = transition;
+ }
+
+ @Override
public Transition getEnterTransition() {
return mEnterTransition;
}
@Override
+ public Transition getReturnTransition() {
+ return mReturnTransition == USE_DEFAULT_TRANSITION ? getEnterTransition()
+ : mReturnTransition;
+ }
+
+ @Override
public Transition getExitTransition() {
return mExitTransition;
}
@Override
+ public Transition getReenterTransition() {
+ return mReenterTransition == USE_DEFAULT_TRANSITION ? getExitTransition()
+ : mReenterTransition;
+ }
+
+ @Override
public Transition getSharedElementEnterTransition() {
return mSharedElementEnterTransition;
}
@Override
+ public Transition getSharedElementReturnTransition() {
+ return mSharedElementReturnTransition == USE_DEFAULT_TRANSITION
+ ? getSharedElementEnterTransition() : mSharedElementReturnTransition;
+ }
+
+ @Override
public Transition getSharedElementExitTransition() {
return mSharedElementExitTransition;
}
@Override
+ public Transition getSharedElementReenterTransition() {
+ return mSharedElementReenterTransition == USE_DEFAULT_TRANSITION
+ ? getSharedElementExitTransition() : mSharedElementReenterTransition;
+ }
+
+ @Override
public void setAllowEnterTransitionOverlap(boolean allow) {
mAllowEnterTransitionOverlap = allow;
}