解决alaert.builder二次调用报错的bug

报错的代码是：

The specified child already has a parent. You must call removeView() on the child's parent first

解决办法是每次显示之前都又一次填充设置view.例如以下：每次点击的时候调用：

public void startClick(View view){
		LayoutInflater inflater = LayoutInflater.from(getApplication()); 
		 mFloatLayout = (LinearLayout)inflater.inflate(R.layout.province_item, null);
		 builder =  new AlertDialog.Builder(MainActivity.this)
	        .setView(mFloatLayout);
		ad = builder.show();
	}