Add springs when user clicks on caret / all apps snaps to top. (610af375) · Commits · e / os / android_packages_apps_Trebuchet

src/com/android/launcher3/allapps/AllAppsGridAdapter.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -424,6 +424,9 @@ public class AllAppsGridAdapter extends RecyclerView.Adapter<AllAppsGridAdapter.
		// The amount by which each adjacent rows' stiffness will differ.
		private static final float ROW_STIFFNESS_COEFFICIENT = 50f;

		// The percentage by which we multiply each row to create the row factor.
		private static final float ROW_PERCENTAGE = 0.3f;

		@Override
		public SpringAnimation initialize(ViewHolder vh) {
		return SpringAnimationHandler.forView(vh.itemView, DynamicAnimation.TRANSLATION_Y, 0);
		@@ -462,7 +465,7 @@ public class AllAppsGridAdapter extends RecyclerView.Adapter<AllAppsGridAdapter.
		* effect.
		*/
		private void calculateSpringValues(SpringAnimation spring, int row, int col) {
		float rowFactor = (1 + row) * 0.5f;
		float rowFactor = (1 + row) * ROW_PERCENTAGE;
		float colFactor = getColumnFactor(col, mAppsPerRow);

		float minValue = DEFAULT_MIN_VALUE_PX * (rowFactor + colFactor);

+20 −0

Original line number	Diff line number	Diff line
		@@ -394,6 +394,11 @@ public class AllAppsTransitionController implements TouchController, SwipeDetect
		animationOut.play(driftAndAlpha);

		animationOut.addListener(new AnimatorListenerAdapter() {
		// Spring values used when the user has not flung all apps.
		private final float MAX_RELEASE_VELOCITY = 10000;
		// The delay (as a % of the animation duration) to start the springs.
		private final float DELAY = 0.3f;

		boolean canceled = false;

		@Override
		@@ -401,6 +406,21 @@ public class AllAppsTransitionController implements TouchController, SwipeDetect
		canceled = true;
		}

		@Override
		public void onAnimationStart(Animator animation) {
		// Add springs for cases where the user has not flung.
		// ie. clicking on the caret, releasing all apps so it snaps up.
		mAppsView.postDelayed(new Runnable() {
		@Override
		public void run() {
		if (!canceled && !mSpringAnimationHandler.isRunning()) {
		float velocity = mProgress * MAX_RELEASE_VELOCITY;
		mSpringAnimationHandler.animateToPositionWithVelocity(0, 1, velocity);
		}
		}
		}, (long) (mAnimationDuration * DELAY));
		}

		@Override
		public void onAnimationEnd(Animator animation) {
		if (canceled) {