java.lang.IllegalStateException: Activity has been destroyed -- Android fragment 非法状态异常：Activity已被销毁--Android碎片

Question

我有一个碎片以展示一张地图。 当我尝试第二次进入该碎片时，出现了以下错误：

10-09 19:40:34.050: E/AndroidRuntime(21859): FATAL EXCEPTION: main
10-09 19:40:34.050: E/AndroidRuntime(21859): java.lang.IllegalStateException: Activity has been destroyed
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1358)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at com.example.cultmacedonia_fragment.map.myMapFragment2.onCreateView(myMapFragment2.java:92)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.Fragment.performCreateView(Fragment.java:1478)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1460)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:440)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.os.Handler.handleCallback(Handler.java:615)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.os.Handler.dispatchMessage(Handler.java:92)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.os.Looper.loop(Looper.java:137)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at android.app.ActivityThread.main(ActivityThread.java:4898)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at java.lang.reflect.Method.invokeNative(Native Method)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at java.lang.reflect.Method.invoke(Method.java:511)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
10-09 19:40:34.050: E/AndroidRuntime(21859):    at dalvik.system.NativeStart.main(Native Method)

第92行在哪里

getChildFragmentManager().beginTransaction()
                .add(R.id.map, mMapFragment).commit();

这是我的片段代码：

这是我的片段代码：

public class myMapFragment2 extends SherlockFragment {

    private MapView mMapView;
    private static GoogleMap mMap;
    private Bundle mBundle;
    private LocationManager locationManager;
    private String provider;
    static boolean isSinglePane;
    private SupportMapFragment mMapFragment;
    double latitude = 17.385044;
    double longitude = 78.486671;

    public static SherlockFragment newInstance() {
        myMapFragment2 mFrgment = new myMapFragment2();
        return mFrgment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        GoogleMapOptions mapOptions = new GoogleMapOptions();

        Bundle bundle = getArguments();
        if (bundle != null) {

            isSinglePane = bundle.containsKey("KEY_DETAIL");

        } else {
            isSinglePane = false;
        }
        mapOptions.compassEnabled(true)
                .camera(new CameraPosition(new LatLng(latitude, longitude), 13,
                        0f, 0f));

        mMapFragment = SupportMapFragment.newInstance(mapOptions);

        Toast.makeText(getActivity().getApplicationContext(),
                String.valueOf(isSinglePane), 1000).show();

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View inflatedView = inflater.inflate(R.layout.maps3, container, false);
        setHasOptionsMenu(true);

        try {
            MapsInitializer.initialize(getActivity());
        } catch (GooglePlayServicesNotAvailableException e) {
            // TODO handle this situation
            Log.i("***GooglePlayServicesNotAvailableException", e.toString());
        }

        getChildFragmentManager().beginTransaction()
                .add(R.id.map, mMapFragment).commit();
        setUpMapIfNeeded(inflatedView);
        return inflatedView;
    }

    private void setUpMapIfNeeded(View inflatedView) {
        if (mMap == null) {
            mMap = ((MapView) inflatedView.findViewById(R.id.map)).getMap();
            if (mMap != null) {
                setUpMap();
            }
        }
    }

    private void setUpMap() {

        Marker marker = mMap.addMarker(new MarkerOptions()
                .position(new LatLng(latitude, longitude))
                .title("You are here")
                .snippet("your point")
                .icon(BitmapDescriptorFactory
                        .defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));
        // create marker

        marker.showInfoWindow();
        // color icon

        // marker.icon(BitmapDescriptorFactory.fromResource(R.drawable.my_marker_icon)));
        // adding marker
        mMap.setMyLocationEnabled(true);
        mMap.getUiSettings().setCompassEnabled(true);
        locationManager = (LocationManager) getActivity()
                .getApplicationContext().getSystemService(
                        Context.LOCATION_SERVICE);
        Criteria criteria = new Criteria();
        provider = locationManager.getBestProvider(criteria, false);

    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {

        inflater.inflate(R.menu.map_menu, menu);
        super.onCreateOptionsMenu(menu, inflater);
    }

    public static void satelliteMap() {
        mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
    }

    public static void normalMap() {
        mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
    }

    public static void menuAll() {
    }

    public static void menuNearMe() {
    }

    @Override
    public void onResume() {
        super.onResume();

        if (mMap == null) {
            mMap = mMapFragment.getMap();
            if (mMap != null) {
                setUpMap();
            }
        }

    }

    @Override
    public void onPause() {
        super.onPause();
        getChildFragmentManager().beginTransaction().remove(mMapFragment)
                .commit();
    }

    public void onDestroyView() {
        super.onDestroyView();

        FragmentTransaction ft = getActivity().getSupportFragmentManager()
                .beginTransaction();
        ft.remove(this);
        ft.commit();
    }
}

并且

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <com.google.android.gms.maps.MapView
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</RelativeLayout>

第一次一切正常，但第二次应用程序崩溃了。

- menu_on_top

---

“get in the fragment a second time”是什么意思？你做了什么可能会破坏活动？例如，转到另一个活动并返回到此活动，转到主屏幕或接听电话，然后返回到此活动等。 - Tenfour04

在我的应用程序中，我使用了一个侧滑菜单。菜单中的一个按钮是“地图”，另一个是“新闻”。当我第一次打开应用程序时，我看到新闻片段，我打开侧滑菜单，点击地图，地图正确显示。如果我回到新闻并再次尝试进入地图，则会出现错误。希望我的描述清楚明了 :) - menu_on_top

抱歉，关于单例模式的第一个答案请忽略。我有点困惑，因为您在newInstance方法中没有遵循标准的Java命名约定。您的类名不以大写字母开头，而且您的局部变量以小写字母m开头，这通常是保留给成员变量的。 - Tenfour04

这与您的问题无关，但为什么您要在onPause中删除内部地图片段？由于您没有在onResume中替换它，如果您离开应用程序并回来（例如在电话后），它将永久消失。 - Tenfour04

错误信息可能相同，但这不是参考问题的副本。在将帖子标记为重复之前，请仔细阅读这些内容。 - Lars

Answer 1

重写方法onActivityCreated(Bundle bundle)，并将这些行从onCreateView()中移动到其中。

   getChildFragmentManager().beginTransaction()
       .add(R.id.map, mMapFragment).commit();
   setUpMapIfNeeded(inflatedView);

- Tenfour04

---

抱歉，这个解决方案并不是很有效 :) - menu_on_top