从后台恢复应用程序后Mapbox SDK崩溃-上下文为null

从后台恢复应用程序后,我有时会遇到崩溃:

#0. Crashed: main
       at com.mapbox.mapboxsdk.annotations.IconFactory.getInstance(IconFactory.java:53)
       at com.mydomain.myapp.manager.MapManager.(MapManager.java:68)
       at com.mydomain.myapp.fragment.HomeFragment.onMapReady(HomeFragment.java:547)
       at com.mapbox.mapboxsdk.maps.MapView$MapCallback.onMapReady(MapView.java:943)
       at com.mapbox.mapboxsdk.maps.MapView$MapCallback.access$1000(MapView.java:908)
       at com.mapbox.mapboxsdk.maps.MapView$MapCallback$1.run(MapView.java:926)
       at android.os.Handler.handleCallback(Handler.java:790)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loop(Looper.java:164)
       at android.app.ActivityThread.main(ActivityThread.java:6494)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

--

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.content.Context.getApplicationContext()' on a null object reference
       at com.mapbox.mapboxsdk.annotations.IconFactory.getInstance(IconFactory.java:53)
       at com.mydomain.myapp.manager.MapManager.(MapManager.java:68)
       at com.mydomain.myapp.fragment.HomeFragment.onMapReady(HomeFragment.java:547)
       at com.mapbox.mapboxsdk.maps.MapView$MapCallback.onMapReady(MapView.java:943)
       at com.mapbox.mapboxsdk.maps.MapView$MapCallback.access$1000(MapView.java:908)
       at com.mapbox.mapboxsdk.maps.MapView$MapCallback$1.run(MapView.java:926)
       at android.os.Handler.handleCallback(Handler.java:790)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loop(Looper.java:164)
       at android.app.ActivityThread.main(ActivityThread.java:6494)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

我的代码:

public class HomeFragment implements OnMapReadyCallback {

  MapView mapView;

  @Override View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    ...
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(this);
    ...
  }

  ...

  @Override public void onMapReady(MapboxMap mapboxMap) {
    ...
    IconFactory iconFactory = IconFactory.getInstance(getContext()); <-- ERROR: CONTEXT IS NULL
    ...   
  }
}

平台: Android 7、8

Mapbox SDK版本: com。地图框。mapboxsdk:mapbox android sdk:5.1。5@aar,com。地图框。mapboxsdk:mapbox android服务:2.1。3@aar

触发行为的步骤

1. 打开应用程序
2. 请稍候。。。
3. 重新打开应用程序(<--有时会崩溃,有时不会