MapView v2 保持上下文

MapView v2 keeping Context around

当使用来自最新 google 地图 API 的 MapView 时,我遇到了内存泄漏,因为 MapView 占用了我的 activity。

我使用了 Leak Canary 并且有这个痕迹


D/LeakCanary:* GC ROOT com.google.android.gms.location.internal.t.a

D/LeakCanary﹕ * 参考文献com.google.android.gms.location.internal.s.a

D/LeakCanary﹕ * 引用com.google.maps.api.android.lib6.d.v.c

D/LeakCanary﹕ * 引用com.google.maps.api.android.lib6.d.aj.b

D/LeakCanary﹕ * 引用 com.google.maps.api.android.lib6.gmm6.c.p.a

D/LeakCanary﹕ * 引用 com.google.maps.api.android.lib6.gmm6.c.y.mParent

D/LeakCanary:*参考文献android.widget.FrameLayout.mParent

D/LeakCanary:*参考文献com.google.android.gms.maps.MapView.mContext

D/LeakCanary:* 泄漏com.myapp.activities.main.AttractionDetailActivity 实例


有人以前看过这个吗?

检查您是否在 onMapReady() 回调中调用 googleMap.setMyLocationEnabled(true)

如果是,则应在 onDestroy 中调用 googleMap.setMyLocationEnabled(false)

这对我有用:

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

Just to give another option as this solution didn't work for me.

我发现这个非常有用的线程,它提出了一些与 MapView 内存泄漏相关的解决方法:

https://github.com/googlesamples/android-play-location/issues/26

对我来说,这个线程中最有趣的事情(对我有用)是:

1) Make sure to unregister your callbacks:

if (googleApiClient != null) {
        googleApiClient.unregisterConnectionCallbacks(this);
        googleApiClient.unregisterConnectionFailedListener(this);

        if (googleApiClient.isConnected()) {
                LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
        }

        googleApiClient.disconnect();
        googleApiClient = null;
 }

2) Use a WeakReference for LocationListener

public class WeakLocationListener implements LocationListener {

    private final WeakReference<LocationListener> locationListenerRef;

    public WeakLocationListener(@NonNull LocationListener locationListener) {
        locationListenerRef = new WeakReference<>(locationListener);
    }

    @Override
    public void onLocationChanged(android.location.Location location) {
        if (locationListenerRef.get() == null) {
            return;
        }
        locationListenerRef.get().onLocationChanged(location);
    }

}

希望对您有所帮助!