use handler to deal with the invalid when setVisibility(View.GONE). At most time ,if the view is under use,setVisibility will be useless.

setVisibility

		Message.obtain(handler,new Runnable() {
			
			@Override
			public void run() {
				System.out.println("gone");
				viewGroup.getChildAt(i).clearAnimation(); // this is very imporant! clear animation
				for(int i=0;i!=viewGroup.getChildCount();++i){
					if(viewGroup.getChildAt(i).getId() == id){
						viewGroup.getChildAt(i).setVisibility(View.VISIBLE);
					}else{
						viewGroup.getChildAt(i).setVisibility(View.GONE);
					}
				}
			}
		}).sendToTarget();