Merge "Fix Sharesheet nest scrolling issue introduced by using RecyclerView"... (20078c22) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/widget/ResolverDrawerLayout.java

+29 −12

Original line number	Diff line number	Diff line
		@@ -121,7 +121,8 @@ public class ResolverDrawerLayout extends ViewGroup {

		private final Rect mTempRect = new Rect();

		private AbsListView mNestedScrollingChild;
		private AbsListView mNestedListChild;
		private RecyclerView mNestedRecyclerChild;

		private final ViewTreeObserver.OnTouchModeChangeListener mTouchModeChangeListener =
		new ViewTreeObserver.OnTouchModeChangeListener() {
		@@ -347,11 +348,20 @@ public class ResolverDrawerLayout extends ViewGroup {
		return mIsDragging \|\| mOpenOnClick;
		}

		private boolean isNestedChildScrolled() {
		return mNestedScrollingChild != null
		&& mNestedScrollingChild.getChildCount() > 0
		&& (mNestedScrollingChild.getFirstVisiblePosition() > 0
		\|\| mNestedScrollingChild.getChildAt(0).getTop() < 0);
		private boolean isNestedListChildScrolled() {
		return mNestedListChild != null
		&& mNestedListChild.getChildCount() > 0
		&& (mNestedListChild.getFirstVisiblePosition() > 0
		\|\| mNestedListChild.getChildAt(0).getTop() < 0);
		}

		private boolean isNestedRecyclerChildScrolled() {
		if (mNestedRecyclerChild != null && mNestedRecyclerChild.getChildCount() > 0) {
		final RecyclerView.ViewHolder vh =
		mNestedRecyclerChild.findViewHolderForAdapterPosition(0);
		return vh == null \|\| vh.itemView.getTop() < 0;
		}
		return false;
		}

		@Override
		@@ -396,8 +406,10 @@ public class ResolverDrawerLayout extends ViewGroup {
		}
		if (mIsDragging) {
		final float dy = y - mLastTouchY;
		if (dy > 0 && isNestedChildScrolled()) {
		mNestedScrollingChild.smoothScrollBy((int) -dy, 0);
		if (dy > 0 && isNestedListChildScrolled()) {
		mNestedListChild.smoothScrollBy((int) -dy, 0);
		} else if (dy > 0 && isNestedRecyclerChildScrolled()) {
		mNestedRecyclerChild.scrollBy(0, (int) -dy);
		} else {
		performDrag(dy);
		}
		@@ -452,8 +464,10 @@ public class ResolverDrawerLayout extends ViewGroup {
		smoothScrollTo(mCollapsibleHeight + mUncollapsibleHeight, yvel);
		mDismissOnScrollerFinished = true;
		} else {
		if (isNestedChildScrolled()) {
		mNestedScrollingChild.smoothScrollToPosition(0);
		if (isNestedListChildScrolled()) {
		mNestedListChild.smoothScrollToPosition(0);
		} else if (isNestedRecyclerChildScrolled()) {
		mNestedRecyclerChild.smoothScrollToPosition(0);
		}
		smoothScrollTo(yvel < 0 ? 0 : mCollapsibleHeight, yvel);
		}
		@@ -729,8 +743,11 @@ public class ResolverDrawerLayout extends ViewGroup {
		@Override
		public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
		if ((nestedScrollAxes & View.SCROLL_AXIS_VERTICAL) != 0) {
		if (child instanceof AbsListView) {
		mNestedScrollingChild = (AbsListView) child;
		if (target instanceof AbsListView) {
		mNestedListChild = (AbsListView) target;
		}
		if (target instanceof RecyclerView) {
		mNestedRecyclerChild = (RecyclerView) target;
		}
		return true;
		}