private OnTouchListener mViewTouchListener = new OnTouchListener() {
		@Override public boolean onTouch(View v, MotionEvent event) {
			switch(event.getAction()) {
				case MotionEvent.ACTION_DOWN:								
					if(MAX_X == -1)
						setMaxPosition();
					START_X = event.getRawX();								
					START_Y = event.getRawY();								
					PREV_X = mParams.x;										
					PREV_Y = mParams.y;										
					break;
				case MotionEvent.ACTION_MOVE:
					int x = (int)(event.getRawX() - START_X);				
					int y = (int)(event.getRawY() - START_Y);				
					
																			
					mParams.x = PREV_X + x;
					mParams.y = PREV_Y + y;
					
					optimizePosition();										
					mWindowManager.updateViewLayout(mPopupView, mParams);	
					break;
			}
			
			return true;
		}
	};
	 
	위 코드에 온클릭리스너를 추가 하여 Back를 구현할 생각인데 뭔가...온클릭이 안들어가네요...도와주세요...