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platform_packages_apps_Launcher3
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Code Issues Projects Releases Wiki Activity

Add layout animation for Recents Go 

Add a layout animation where views fade in upward in a cascade and play
it every time the user goes to Recents.

Bug: 114136250
Test: Go to Recents and see cascade animation
Change-Id: Ia6fdd344f0bfb46c4d507e50f278a86a4432c2b6
This commit is contained in:
Kevin 2019-04-05 12:20:22 -07:00
parent fc6781992d
commit 3e98796189
1 changed files with 24 additions and 1 deletions
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25
go/quickstep/src/com/android/quickstep/views/IconRecentsView.java
View File

@ -28,6 +28,10 @@ import android.util.AttributeSet;
import android.util.FloatProperty;
import android.view.View;
import android.view.ViewDebug;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.LayoutAnimationController;
import android.widget.FrameLayout;
import androidx.annotation.NonNull;
@ -69,6 +73,8 @@ public final class IconRecentsView extends FrameLayout {
}
};
private static final long CROSSFADE_DURATION = 300;
private static final long LAYOUT_ITEM_ANIMATE_IN_DURATION = 150;
private static final long LAYOUT_ITEM_ANIMATE_IN_DELAY_BETWEEN = 40;
private static final long ITEM_ANIMATE_OUT_DURATION = 150;
private static final long ITEM_ANIMATE_OUT_DELAY_BETWEEN = 40;
private static final float ITEM_ANIMATE_OUT_TRANSLATION_X_RATIO = .25f;
@ -84,6 +90,7 @@ public final class IconRecentsView extends FrameLayout {
private final TaskListLoader mTaskLoader;
private final TaskAdapter mTaskAdapter;
private final TaskActionController mTaskActionController;
private final LayoutAnimationController mLayoutAnimation;
private RecentsToActivityHelper mActivityHelper;
private RecyclerView mTaskRecyclerView;
@ -99,6 +106,7 @@ public final class IconRecentsView extends FrameLayout {
mTaskAdapter = new TaskAdapter(mTaskLoader);
mTaskActionController = new TaskActionController(mTaskLoader, mTaskAdapter);
mTaskAdapter.setActionController(mTaskActionController);
mLayoutAnimation = createLayoutAnimation();
}
@Override
@ -112,6 +120,7 @@ public final class IconRecentsView extends FrameLayout {
ItemTouchHelper helper = new ItemTouchHelper(
new TaskSwipeCallback(mTaskActionController));
helper.attachToRecyclerView(mTaskRecyclerView);
mTaskRecyclerView.setLayoutAnimation(mLayoutAnimation);
mEmptyView = findViewById(R.id.recent_task_empty_view);
mContentView = findViewById(R.id.recent_task_content_view);
@ -131,7 +140,6 @@ public final class IconRecentsView extends FrameLayout {
}
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
@ -157,6 +165,7 @@ public final class IconRecentsView extends FrameLayout {
* becomes visible.
*/
public void onBeginTransitionToOverview() {
mTaskRecyclerView.scheduleLayoutAnimation();
mTaskAdapter.setIsShowingLoadingUi(true);
mTaskAdapter.notifyDataSetChanged();
// Load any task changes
@ -324,4 +333,18 @@ public final class IconRecentsView extends FrameLayout {
}
});
}
private static LayoutAnimationController createLayoutAnimation() {
AnimationSet anim = new AnimationSet(false /* shareInterpolator */);
Animation alphaAnim = new AlphaAnimation(0, 1);
alphaAnim.setDuration(LAYOUT_ITEM_ANIMATE_IN_DURATION);
anim.addAnimation(alphaAnim);
LayoutAnimationController layoutAnim = new LayoutAnimationController(anim);
layoutAnim.setDelay(
(float) LAYOUT_ITEM_ANIMATE_IN_DELAY_BETWEEN / LAYOUT_ITEM_ANIMATE_IN_DURATION);
return layoutAnim;
}
}