am 21990922: Merge "Fix AbsListView scrolling behavior at edges." into froyo (1f29b4cd) · Commits · e / os / android_frameworks_base

core/java/android/widget/AbsListView.java

+12 −13

Original line number	Diff line number	Diff line
		@@ -2059,12 +2059,6 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
		deltaY -= mMotionCorrection;
		int incrementalDeltaY = mLastY != Integer.MIN_VALUE ? y - mLastY : deltaY;

		int motionViewPrevTop = 0;
		View motionView = this.getChildAt(mMotionPosition - mFirstPosition);
		if (motionView != null) {
		motionViewPrevTop = motionView.getTop();
		}

		// No need to do all this work if we're not going to move anyway
		boolean atEdge = false;
		if (incrementalDeltaY != 0) {
		@@ -2072,14 +2066,19 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
		}

		// Check to see if we have bumped into the scroll limit
		motionView = this.getChildAt(mMotionPosition - mFirstPosition);
		if (motionView != null) {
		// Check if the top of the motion view is where it is
		// supposed to be
		final int motionViewRealTop = motionView.getTop();
		if (atEdge) {
		invalidate();
		if (atEdge && getChildCount() > 0) {
		// Treat this like we're starting a new scroll from the current
		// position. This will let the user start scrolling back into
		// content immediately rather than needing to scroll back to the
		// point where they hit the limit first.
		int motionPosition = findMotionRow(y);
		if (motionPosition >= 0) {
		final View motionView = getChildAt(motionPosition - mFirstPosition);
		mMotionViewOriginalTop = motionView.getTop();
		}
		mMotionY = y;
		mMotionPosition = motionPosition;
		invalidate();
		}
		mLastY = y;
		}