Merge "Refine AbsListView transcript mode behavior." (6e3d6cf2) · Commits · e / os / android_frameworks_base

core/java/android/widget/AbsListView.java

+14 −3

Original line number	Diff line number	Diff line
		@@ -3856,12 +3856,23 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
		// Update this first, since setNextSelectedPositionInt inspects it
		mNeedSync = false;

		if (mTranscriptMode == TRANSCRIPT_MODE_ALWAYS_SCROLL \|\|
		(mTranscriptMode == TRANSCRIPT_MODE_NORMAL &&
		mFirstPosition + getChildCount() >= mOldItemCount)) {
		if (mTranscriptMode == TRANSCRIPT_MODE_ALWAYS_SCROLL) {
		mLayoutMode = LAYOUT_FORCE_BOTTOM;
		return;
		}
		if (mTranscriptMode == TRANSCRIPT_MODE_NORMAL) {
		final int childCount = getChildCount();
		final int listBottom = getBottom() - getPaddingBottom();
		final View lastChild = getChildAt(childCount - 1);
		final int lastBottom = lastChild != null ? lastChild.getBottom() : listBottom;
		if (mFirstPosition + childCount >= mOldItemCount && lastBottom <= listBottom) {
		mLayoutMode = LAYOUT_FORCE_BOTTOM;
		return;
		}
		// Something new came in and we didn't scroll; give the user a clue that
		// there's something new.
		awakenScrollBars();
		}

		switch (mSyncMode) {
		case SYNC_SELECTED_POSITION: