ListFragment“尚未创建内容视图"；在旋转 [英] ListFragment "content view not yet created" on Rotate

问题描述

我有一个扩展的ListFragment，它带有onViewCreated()

I have an extended ListFragment, with this onViewCreated()

public void onViewCreated(View v,Bundle savedInstanceState) {
    super.onViewCreated(v, savedInstanceState);
    mListener.onFragmentAction(0x000A);
    if (mAdapter != null) {
        getListView().setAdapter(mAdapter);
    }
}

mListener.onFragmentAction调用主要活动以附加一些侦听器，并将适配器发送到片段的listView(logFrag是活动对MyListFragment的引用)

mListener.onFragmentAction calls the main activity to attach some listeners and send the adapter to the fragment's listView (logFrag is the activity's reference to MyListFragment)

public void populateLogFrag() {
//line 225  logFrag.getListView().setOnItemLongClickListener(myEventListener);
            logFrag.getListView().setOnItemClickListener(myEventListener);
            refreshLogAdapter(provideLogAdapter());
}

应用程序正常加载，但是在更改配置(设备旋转)后，我得到了以下堆栈跟踪:

The app loads fine, but after config change (device rotation) I get the following stack trace:

11-22 14:58:24.336: E/AndroidRuntime(22261): Caused by: java.lang.IllegalStateException: Content view not yet created
11-22 14:58:24.336: E/AndroidRuntime(22261):    at android.support.v4.app.ListFragment.ensureList(ListFragment.java:328)
11-22 14:58:24.336: E/AndroidRuntime(22261):    at android.support.v4.app.ListFragment.getListView(ListFragment.java:222)
11-22 14:58:24.336: E/AndroidRuntime(22261):    at com.berrmal.timetracker.MainActivity.populateLogFrag(MainActivity.java:225)
11-22 14:58:24.336: E/AndroidRuntime(22261):    at com.berrmal.timetracker.MainActivity.onFragmentAction(MainActivity.java:282)
11-22 14:58:24.336: E/AndroidRuntime(22261):    at com.berrmal.timetracker.MyListFragment.onViewCreated(MyListFragment.java:23)

我不知道为什么尚未创建ListView，因为在Fragment的onCreateView方法已经返回之后以及在onViewCreated()期间调用它.我发现一个或两个带有相关标题的主题，但是解决方案似乎在这里并不适用.

I can't figure out why the ListView is not yet created, since I'm calling it after the Fragment's onCreateView method has already returned, and during onViewCreated(). I found a thread or two with related titles, but the solutions didn't seem to apply here.

推荐答案

将代码从onViewCreated移到onActivityCreated.通常，所有使用UI小部件的东西都应该在onActivityCreated中.

Move the code from onViewCreated to onActivityCreated. Generally, everything that uses UI widgets should be in onActivityCreated.

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