如何在片段中获取rootview？

Question

我正在使用这个库在我的应用程序上使用表情符号键盘。https://github.com/ankushsachdeva/emojicon

自述文件规定，必须使用activity layout hierarchy的最顶层视图初始化弹出窗口。

我的应用程序是通过片段实现的。

这是我用来测试的代码：

public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.overview1_layout, container,
            false);

    // Give the topmost view of your activity layout hierarchy. This will be used to measure soft keyboard height
    EmojiconsPopup popup = new EmojiconsPopup(view, getActivity());

    //Will automatically set size according to the soft keyboard size        
    popup.setSizeForSoftKeyboard();

    popup.showAtBottom();


    return view;
}

如果我运行这段代码，我会在logcat中得到以下错误：

11-02 22:37:16.685: E/AndroidRuntime(30363): java.lang.RuntimeException: Unable to resume activity {com.Testing.full/com.Testing.full.MainActivity}: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running?

编辑:我正在使用SherlockFragment

Answer 1

将视图另存为fragment的实例成员，并在OnViewCreated方法中初始化Emojicons弹出窗口。这可能会解决你的问题。

public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {

View view = inflater.inflate(R.layout.overview1_layout, container,
        false);

this.view = view

return view;
}

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

// Give the topmost view of your activity layout hierarchy. This will be used to measure soft keyboard height
EmojiconsPopup popup = new EmojiconsPopup(view, getActivity());




//Will automatically set size according to the soft keyboard size        
popup.setSizeForSoftKeyboard();

popup.showAtBottom();
}

但是对于问题的标题，请查看here

Answer 2

在onCreateView调用后的Fragment或其他回调方法的onStart()中：

emojiconsPopup = new EmojiconsPopup(**getView()**, getActivity());
emojiconsPopup.setSizeForSoftKeyboard();

另一种选择是：

emojiconsPopup = new EmojiconsPopup(  getView().getRootView()  , getActivity());
emojiconsPopup.setSizeForSoftKeyboard();