获取Android Activity上所有的控件

在android开发中，在表单提交的场景下想获取activity上所有的控件

/**    * @note 获取该activity所有view    * */    public List<View> getAllChildViews() {    View view = this.getWindow().getDecorView();    return getAllChildViews(view);    }      private List<View> getAllChildViews(View view) {    List<View> allchildren = new ArrayList<View>();    if (view instanceof ViewGroup) {    ViewGroup vp = (ViewGroup) view;    for (int i = 0; i < vp.getChildCount(); i++) {    View viewchild = vp.getChildAt(i);    allchildren.add(viewchild);    allchildren.addAll(getAllChildViews(viewchild));    }    }    return allchildren;    }