java.io.IOException：grpc 失败

当我使用 call getFromLocationName 时，我收到一个 IOException ，描述为“grpc failed”。

运行的代码

@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;
    try {
        Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
        List<Address> listAdresses = geocoder.getFromLocationName("London", 10);
        Log.i("PlaceInfo", listAdresses.get(0).toString());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

控制台输出错误：

07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err: java.io.IOException: grpc failed
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at android.location.Geocoder.getFromLocationName(Geocoder.java:178)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at co.siqve.maplocationdemo.MapsActivity.onMapReady(MapsActivity.java:70)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at com.google.android.gms.maps.zzaj.zza(Unknown Source)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at com.google.android.gms.maps.internal.zzaq.onTransact(Unknown Source)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at android.os.Binder.transact(Binder.java:499)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at com.google.android.gms.maps.internal.aq.a(:com.google.android.gms.DynamiteModulesB:5)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at com.google.maps.api.android.lib6.impl.bb.run(:com.google.android.gms.DynamiteModulesB:5)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at android.os.Handler.handleCallback(Handler.java:751)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:95)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at android.os.Looper.loop(Looper.java:154)
07-10 12:01:38.781 13712-13712/co.siqve.maplocationdemo W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:6119)
07-10 12:01:38.782 13712-13712/co.siqve.maplocationdemo W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
07-10 12:01:38.782 13712-13712/co.siqve.maplocationdemo W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
07-10 12:01:38.782 13712-13712/co.siqve.maplocationdemo W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

Android SDK 版本（API 级别）：25

Android Studio 插件是最新的。

当我的真实设备上没有互联网连接时，我可以重现此问题（java.io.IOException：grpc failed）。