bug

[JakeWoki]

SingleTypeAdapter.java

@OverRide
public long getItemId(final int position) {
return items[position].hashCode();
}
items[position].hashCode() may be is a minus，instead it：

@OverRide
public long getItemId(final int position) {
return position;
}

[JakeWoki]

ListView.java

/**
 * Find a position that can be selected (i.e., is not a separator).
 *
 * @param position The starting position to look at.
 * @param lookDown Whether to look down for other positions.
 * @return The next selectable position starting at position and then searching either up or
 *         down. Returns {@link #INVALID_POSITION} if nothing can be found.
 */
@Override
int lookForSelectablePosition(int position, boolean lookDown) {
    final ListAdapter adapter = mAdapter;
    if (adapter == null || isInTouchMode()) {
        return INVALID_POSITION;
    }

    final int count = adapter.getCount();
    if (!mAreAllItemsSelectable) {
        if (lookDown) {
            position = Math.max(0, position);
            while (position < count && !adapter.isEnabled(position)) {
                position++;
            }
        } else {
            position = Math.min(position, count - 1);
            while (position >= 0 && !adapter.isEnabled(position)) {
                position--;
            }
        }
    }

    if (position < 0 || position >= count) {
        return INVALID_POSITION;
    }

    return position;
}

if is a minus，listview will scroll to first position