相关疑难解决方法(0)

我正在将我的应用程序从AsyncTasks移植到Fragements.

但是如何访问片段中的listView(id:list)元素？

class MyFragment extends ListFragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.list_fragment, container, false);
        ListView listView = getListView(); //EX: 
        listView.setTextFilterEnabled(true);
        registerForContextMenu(listView);
        return v;
    }
}

XML:

        <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </ListView>

例如:

Caused by: java.lang.IllegalStateException: Content view not yet created

我的Android应用程序一直存在问题,当它在选项卡之间滑动时崩溃并出现以下错误:

09-16 16:19:27.142    4750-4750/com.khackett.runmate E/AndroidRuntime? FATAL EXCEPTION: main
    Process: com.khackett.runmate, PID: 4750
    java.lang.IllegalStateException: Content view not yet created
            at android.support.v4.app.ListFragment.ensureList(ListFragment.java:328)
            at android.support.v4.app.ListFragment.getListView(ListFragment.java:222)
            at com.khackett.runmate.ui.MyRunsFragment$1.done(MyRunsFragment.java:167)
            at com.khackett.runmate.ui.MyRunsFragment$1.done(MyRunsFragment.java:135)
            at com.parse.ParseTaskUtils$2$1.run(ParseTaskUtils.java:115)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5254)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

这是MyRunsFragment:

public class MyRunsFragment extends ListFragment {

    protected SwipeRefreshLayout mSwipeRefreshLayout;

    // member variable to store the list of routes the user has accepted
    protected List<ParseObject> mAcceptedRoutes;

    private int MY_STATUS_CODE = 1111;

    // Default constructor for …