MainActivity has leaked window

当使用WindowManager 的addView添加界面时，

在释放时，需要调用removeView，否则会出现

has leaked window android.widget.TextView that was originally added  内在泄露错误

@Override

public void onCreate(Bundle savedInstanceState) {
//启动activity时不自动弹出软键盘
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); 
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mListView = (ListView) this.findViewById(R.id.list);
indexBar = (SideBar) findViewById(R.id.sideBar);
mDialogText = (TextView) LayoutInflater.from(this).inflate(R.layout.list_position, null);
head = LayoutInflater.from(this).inflate(R.layout.head, null);
mListView.addHeaderView(head);
mDialogText.setVisibility(View.INVISIBLE);
mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_APPLICATION,
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
PixelFormat.TRANSLUCENT);
mWindowManager.addView(mDialogText, lp);

indexBar.setTextView(mDialogText);

}

@Override
protected void onDestroy() {//我是这样解决了 
mWindowManager.removeView(mDialogText);
super.onDestroy();
}