在片段 UI 中将横向旋转为纵向时不刷新

Question

当我将设备横向旋转为纵向或纵向旋转为横向时，设备不会刷新 UI。我正在使用片段“onCreateView”和“onConfigurationChanged”来绘制布局，remote_gesture 和 remote_navigation 有纵向和横向两种布局。最后将android:configChanges="orientation|screenSize|keyboardHidden"添加到AndroidManifest.xml

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment


    //View rootView = (View)inflater.inflate(R.layout.remote_navigation, container, false);

    View rootView = (View)inflater.inflate(R.layout.fragment_remote, container, false);
    viewSwitcher =(ViewSwitcher)rootView.findViewById(R.id.remote_viewswitcher);
    remoteGesture = (View)inflater.inflate(R.layout.remote_gesture, null);
    remoteNav = (View)inflater.inflate(R.layout.remote_navigation, null);
    viewSwitcher.addView(remoteNav);
    viewSwitcher.addView(remoteGesture);
    setupButtons(rootView);
    return rootView;
}

@Override
public void onConfigurationChanged(Configuration newConfig) {


    super.onConfigurationChanged(newConfig);

    Log.w(TAG, "rrr... onConfigurationChanged...");
    ViewGroup container = (ViewGroup) getView();
    //container.removeAllViewsInLayout();
    LayoutInflater inflater = (LayoutInflater) getActivity().getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    View rootView = (View)inflater.inflate(R.layout.fragment_remote, container, false);
    viewSwitcher = (ViewSwitcher) rootView.findViewById(R.id.remote_viewswitcher);
    remoteGesture = (View) inflater.inflate(R.layout.remote_gesture, null);
    remoteNav = (View)inflater.inflate(R.layout.remote_navigation, null);
    viewSwitcher.addView(remoteNav);
    viewSwitcher.addView(remoteGesture);
}

我该如何解决这个问题？

Answer 1

在onConfigurationChanged() 上，删除视图在添加新视图之前。这就像强制刷新。示例代码：

viewSwitcher.removeAllViews()

方法的定义@ViewGroup removeAllViews()

另一个类似的示例代码，通用版本：

public void onConfigurationChanged(Configuration newConfig) {
   super.onConfigurationChanged(newConfig);

   // Refresh views by removing first
   ViewGroup viewGroup = (ViewGroup) getView(); 
   viewGroup.removeAllViewsInLayout();
   ...
}