MapView泄漏活动（无位置服务）

Question

我正在使用play服务v9.8.0（没有位置服务权限），并且在对话框片段中使用MapView时仍然面临泄漏。我使用它就像在我的代码示例中，我用它来显示一个位置，我没有setMyLocationEnabled（因为我甚至没有这个设置的权限）。

有人在我的代码中看到问题吗？我在这里得到一个泄漏：MapView v2 keeping Context around。我做如下：

• 创建一个对话框
• 与MapView替换我的布局视图（因为我允许使用静态地图一样，所以我的默认视图是我的布局ImageView，这将是用MapView）

更换然后它发生，我的片段泄漏MapView.mContext ...

码 - 对话片段

public class DialogMediaDetails extends DialogFragment 
{ 
    private GoogleMap mGoogleMap = null; 
    private MapView mMapView = null; 

    @Override 
    public final Dialog onCreateDialog(Bundle savedInstanceState) 
    { 
     Dialog dlg = ...; // create dialog 
     View view = ...; // get view from dialog 
     Location location = ...; // defined location 
     initGoogleMap(); 
     return dlg; 
    } 

    private void initGoogleMap(Location location) 
    { 
     mMapView = new MapView(getActivity()); 
     MapsInitializer.initialize(getActivity()); 
     // Updates the location and zoom of the MapView 
     mMapView.onCreate(null); 
     mMapView.getMapAsync(new OnMapReadyCallback() 
     { 
      @Override 
      public void onMapReady(GoogleMap googleMap) 
      { 
       LatLng coordinates = new LatLng(location.getLatitude(), location.getLongitude()); 
       googleMap.addMarker(new MarkerOptions().position(coordinates)); 
       googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(coordinates, 15)); 
       mGoogleMap = googleMap; 
       mMapView.onResume(); 
      } 
     }); 
     mMapView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() 
     { 
      @Override 
      public void onGlobalLayout() 
      { 
       mMapView.getViewTreeObserver().removeOnGlobalLayoutListener(this); 

       // MapView is scrollable, so we disable dragging 
       CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) appBarLayout.getLayoutParams(); 
       AppBarLayout.Behavior behavior = (AppBarLayout.Behavior) params.getBehavior(); 
       behavior.setDragCallback(new AppBarLayout.Behavior.DragCallback() { 
        @Override 
        public boolean canDrag(AppBarLayout appBarLayout) { 
         return false; 
        } 
       }); 
      } 
     }); 

     replaceHeader(mMapView); 
    } 

    private void replaceHeader(View view) 
    { 
     ViewGroup parent = (ViewGroup) pbHeader.getParent(); 
     int index = parent.indexOfChild(pbHeader); 
     ViewGroup.LayoutParams lp = pbHeader.getLayoutParams(); 
     parent.removeView(pbHeader); 
     parent.addView(view, index, lp); 
    } 

    // ---------------------------------------- 
    // forward all lifecycle events to MapView 
    // ---------------------------------------- 

    @Override 
    public void onResume() { 
     super.onResume(); 
     if (mMapView != null) 
      mMapView.onResume(); 
    } 

    @Override 
    public void onSaveInstanceState(Bundle outState) { 
     super.onSaveInstanceState(outState); 
     if (mMapView != null) 
      mMapView.onSaveInstanceState(outState); 
    } 

    @Override 
    public void onPause() { 
     super.onPause(); 
     if (mMapView != null) 
      mMapView.onPause(); 
    } 

    @Override 
    public void onLowMemory() { 
     super.onLowMemory(); 
     if (mMapView != null) 
      mMapView.onLowMemory(); 
    } 

    @Override 
    public void onDestroy() { 
     super.onDestroy(); 
     if (mMapView != null) 
      mMapView.onDestroy(); 
     mMapView = null; 
    } 
} 

Answer 1

有一些issues报告与MapView泄漏有关。您可以尝试拨打googleMap.setMyLocationEnabled(false);onDestroy以防止泄漏发生。未能致电MapView.onDestroy或GoogleMap.setMyLocationEnabled(false)将导致泄漏。这里有一个相关的thread可能有帮助。

Answer 2

我有同样的问题，并在我的堆参考树中发现错误来自库的lite模式部分。尽量不要使用lite模式并为mapview添加所有相应的生命周期。