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Commit 7dd4a536 authored by Chet Haase's avatar Chet Haase
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Adding new CHANGING transition to LayoutTransition. 

LayoutTransition used to depend on child views being added/removed or
shown/hidden in the transition container. These evens would trigger animations
to fade the child view as well as those to animate the side-affected changes
to sibling views. This CL enables a new feature in LayoutTransition that
enables animating any changes to the layout of the children in the container
whenever a layout occurs. For example, you can change the LayoutParams of a
child view and call requestLayout() to automatically animate those changes.

This capability is not enabled by default. To enable, call the new
LayoutTransition.enableTransitionType(LayoutTransition.CHANGING) method.

Change-Id: I4d07a3b36245353b2151f0dca4f75080ab6a4592
parent c843642f

api/current.txt

+4 −0
Original line number Diff line number Diff line
@@ -2311,6 +2311,8 @@ package android.animation { 
    ctor public LayoutTransition();

    method public void addChild(android.view.ViewGroup, android.view.View);

    method public void addTransitionListener(android.animation.LayoutTransition.TransitionListener);

    method public void disableTransitionType(int);

    method public void enableTransitionType(int);

    method public android.animation.Animator getAnimator(int);

    method public long getDuration(int);

    method public android.animation.TimeInterpolator getInterpolator(int);
@@ -2321,6 +2323,7 @@ package android.animation { 
    method public void hideChild(android.view.ViewGroup, android.view.View, int);

    method public boolean isChangingLayout();

    method public boolean isRunning();

    method public boolean isTransitionTypeEnabled(int);

    method public void removeChild(android.view.ViewGroup, android.view.View);

    method public void removeTransitionListener(android.animation.LayoutTransition.TransitionListener);

    method public void setAnimateParentHierarchy(boolean);
@@ -2335,6 +2338,7 @@ package android.animation { 
    field public static final int APPEARING = 2; // 0x2

    field public static final int CHANGE_APPEARING = 0; // 0x0

    field public static final int CHANGE_DISAPPEARING = 1; // 0x1

    field public static final int CHANGING = 4; // 0x4

    field public static final int DISAPPEARING = 3; // 0x3

  }

























core/java/android/animation/LayoutTransition.java



+273
−64


























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core/java/android/view/ViewGroup.java



+3
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@@ -4207,6 +4207,9 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager













    @Override















    public final void layout(int l, int t, int r, int b) {















        if (mTransition == null || !mTransition.isChangingLayout()) {













            if (mTransition != null) {













                mTransition.layoutChange(this);













            }















            super.layout(l, t, r, b);















        } else {















            // record the fact that we noop'd it; request layout when transition finishes