使用 PopupWindow 的时候遇到Activity com.avcit… has leaked

在OnCreate方法中调用

popupWindow.showAtLocation(view, Gravity.LEFT | Gravity.TOP, x, y);

时，会出现如下错误：

Activity com.avcit.conference.MainActivity has leaked window android.widget.PopupWindow$PopupViewContainer@406dfc10 that was originally added here  

android.view.WindowLeaked: Activity com.avcit.conference.MainActivity has leaked window android.widget.PopupWindow$PopupViewContainer@406dfc10 that was originally added here

这是由于这个popupWindow依赖的父Activity已经finish（）的了，可是它还存在，因此回有上面的提示。 有两种解决办法：

（1）在onPause()中将它dismiss（）了。

<!-- lang: java -->

@Override
	    protected void onPause() {
	    	// TODO Auto-generated method stub
	    	super.onPause();
	    	dismissPopupWindow();
	    	//if(popupWindow != null)
	    }
      
   //判断PopupWindow是否是存在，存在就把它dismiss掉  
    private void dismissPopupWindow() {

    	if(popupWindow != null){
    		popupWindow.dismiss();
    		popupWindow = null;
    	}
	}

（2）从新使用一个线程来跑这个popupWindow：

<!-- lang: java -->
 handler.post(new Runnable() {
					@Override
					public void run() {
						int [] location = new int[2];
						view.getLocationInWindow(location);
						View popupView = View.inflate(AppManagerActivity.this, R.layout.popup_item, null);
						LinearLayout ll_app_uninstall = (LinearLayout) popupView.findViewById(R.id.ll_app_uninstall);  
			            LinearLayout ll_app_run = (LinearLayout) popupView.findViewById(R.id.ll_app_start);  
			            LinearLayout ll_app_share = (LinearLayout) popupView.findViewById(R.id.ll_app_share);  
			            ll_app_run.setOnClickListener(AppManagerActivity.this);
			            ll_app_uninstall.setOnClickListener(AppManagerActivity.this); 
			            ll_app_share.setOnClickListener(AppManagerActivity.this); 
			            
			            //拿到当前点击的条目，并设置到view里面
			            AppInfo info = (AppInfo) lv_app_manager.getItemAtPosition(position);
			            ll_app_uninstall.setTag(info);  
		                ll_app_run.setTag(info);  
		                ll_app_share.setTag(info); 
		                
		                //添加动画  
		                LinearLayout ll_app_popup = (LinearLayout) popupView.findViewById(R.id.ll_app_popup);  
		                ScaleAnimation scaleAnimation = new ScaleAnimation(0.0f, 1.0f, 0.0f, 1.0f);  
		                scaleAnimation.setDuration(300);  
						 //new 一个PopupWindow出来  
		                popupWindow = new PopupWindow(popupView, 230, 70);  
		                //必定要给PopupWindow设置一个背景图片，否则的话，会有不少未知的问题的  
		                //如没办法给它加上动画，还有显示会有问题等，  
		                //若是咱们没有要设置的图片，那么咱们就给它加上了一个透明的背景图片  
		                Drawable drawable = new ColorDrawable(Color.TRANSPARENT);  
		                popupWindow.setBackgroundDrawable(drawable);  
		                
		                int x = location[0] + 60;  
		                int y = location[1];  
		                //把PopupWindow显示出来  
		                popupWindow.showAtLocation(view, Gravity.LEFT | Gravity.TOP, x, y);  
		                //开启动画 
		                ll_app_popup.startAnimation(scaleAnimation); 
					}
				});