private void createSelectionLayer(Context context) {
final LayoutInflater inflater =
(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mSelectionDragLayer = (DragLayer) inflater.inflate(R.layout.selection_drag_layer, null);
mDragController = new DragController(context);
mDragController.setDragListener(this);
mDragController.addDropTarget(mSelectionDragLayer);
mSelectionDragLayer.setDragController(mDragController);
mStartSelectionHandle = (ImageView) mSelectionDragLayer.findViewById(R.id.startHandle);
mStartSelectionHandle.setTag(HandleType.START);
mEndSelectionHandle = (ImageView) mSelectionDragLayer.findViewById(R.id.endHandle);
mEndSelectionHandle.setTag(HandleType.END);
final OnTouchListener handleTouchListener =
new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
boolean handledHere = false;
if (event.getAction() == MotionEvent.ACTION_DOWN) {
handledHere = startDrag(v);
mLastTouchedSelectionHandle = (HandleType) v.getTag();
}
return handledHere;
}
};
mStartSelectionHandle.setOnTouchListener(handleTouchListener);
mEndSelectionHandle.setOnTouchListener(handleTouchListener);
}
public void stopDrag() {
mDragController.cancelDrag();
}
private boolean startDrag(View v) {
Object dragInfo = v;
mDragController.startDrag(v, mSelectionDragLayer, dragInfo, DragBehavior.MOVE);
return true;
}