Don't smooth scroll if the adapter is null (2ac93ae9) · Commits · e / os / android_frameworks_base

core/java/android/widget/AbsListView.java

+8 −2

Original line number	Diff line number	Diff line
		@@ -7160,8 +7160,14 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
		return;
		}

		if (mAdapter == null) {
		// Can't scroll anywhere without an adapter.
		return;
		}

		final int itemCount = getCount();
		final int clampedPosition = MathUtils.constrain(targetPosition, 0, itemCount - 1);
		final int clampedBoundPosition = MathUtils.constrain(boundPosition, 0, itemCount - 1);
		final int firstPosition = getFirstVisiblePosition();
		final int lastPosition = firstPosition + getChildCount();
		final int targetRow = getRowForPosition(clampedPosition);
		@@ -7180,8 +7186,8 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
		}

		float endSubRow = targetRow;
		if (boundPosition != INVALID_POSITION) {
		final int boundRow = getRowForPosition(boundPosition);
		if (clampedBoundPosition != INVALID_POSITION) {
		final int boundRow = getRowForPosition(clampedBoundPosition);
		if (boundRow >= firstRow && boundRow < lastRow && boundRow != targetRow) {
		endSubRow = computeBoundSubRow(targetRow, boundRow);
		}