Android 未调用GoogleMap.setOnMapLoadedCallback

我想使用谷歌地图和地理编码功能获取位置。找到我的正确纬度，经度，格式化地址。调用了onMapReady函数，但根本不调用onmappload函数

舱单：

    <meta-data
        android:name="com.google.android.geo.API_KEY"
        android:value="..." />

我的customMapView布局：

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

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

    <TextView
       android:id="@+id/address_view"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_weight="0"
       android:ellipsize="end"
       android:maxLines="1"
       android:padding="5dp"
       android:singleLine="true"
       android:visibility="visible"
       tools:text="21 Jump St, Atlanta GA 30311" />
</merge>

---

试试这段代码，您还并没有调用MapView的正确生命周期方法。这已经在报告中解释过了

您可以自定义视图：

你的活动

---

有onStart，onStop。。。还有更多的MapView方法，您需要从活动中手动调用这些方法才能让map完全运行。在创建后不要调用MapView.onResume，请在活动生命周期的正确位置执行。请查看我的更新问题。我仍然看不到您在正确位置调用MapView.onStart和MapView.onResume。必须在与活动相同的生命周期中调用它。在这里看到更多。在这里，您将MapView放在自定义LinearLayout中，因此必须在此自定义视图中创建所有生命周期方法，并将调用传递给MapView。在这里调用onCreatenull和onResume的方式并不是它假定的工作方式。是否显示了映射和标记？我会在我这边检查，然后通知你是的，地图上显示了我的代码和你的代码。但我的问题是，没有调用setOnMapLoadedCallback函数。我遇到了很多麻烦，请帮助我。文档中说：如果由于连接问题导致地图从未加载，或者由于用户不断与地图交互导致地图不断更改且从未完成加载，则不会触发此事件。。那么，你的连接是否良好，你在等待事件时是否在其上做了任何手势？我在等待它，但根本没有触摸它，我在Wific上的连接在控制台中创建api密钥，使用我的应用程序的包名和SHA-1证书指纹限制它，启用Google Map SDK api并完成。检查您的Logcat，如果密钥无效，它将显示一些红线错误

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

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

    <TextView
       android:id="@+id/address_view"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_weight="0"
       android:ellipsize="end"
       android:maxLines="1"
       android:padding="5dp"
       android:singleLine="true"
       android:visibility="visible"
       tools:text="21 Jump St, Atlanta GA 30311" />
</merge>

    public class CustomMapView extends LinearLayout {

    private MapView mapView;
    private TextView textView;

    public CustomMapView(Context context) {
        this(context, null);
    }

    public CustomMapView(Context context, AttributeSet attrs) {
        super(context, attrs);
        initialize(context);
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public CustomMapView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initialize(context);
    }

    private void initialize(Context context) {
        setOrientation(LinearLayout.VERTICAL);
        LayoutInflater.from(context).inflate(R.layout.map_view, this, true);

        this.mapView = ViewUtil.findById(this, R.id.map_view);
        this.textView = ViewUtil.findById(this, R.id.address_view);
    }

    public void display(Place place) {

        this.mapView.onCreate(null);
        this.mapView.onResume();

        this.mapView.setVisibility(View.VISIBLE);
        this.imageView.setVisibility(View.GONE);

        this.mapView.getMapAsync(new OnMapReadyCallback() {
            @Override
            public void onMapReady(final @Nonnull GoogleMap googleMap) {

                googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(place.getLatLong(), 13));
                googleMap.addMarker(new MarkerOptions().position(place.getLatLong()));
                googleMap.setBuildingsEnabled(true);
                googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
                googleMap.getUiSettings().setAllGesturesEnabled(false);
                googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(place.getLatLong(), googleMap.getMaxZoomLevel() - 4));

                googleMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
                    @Override
                    public void onMapLoaded() {

                        googleMap.snapshot(new GoogleMap.SnapshotReadyCallback() {
                            @Override
                            public void onSnapshotReady(Bitmap bitmap) {

                               // it is not called
                            }
                        });
                    }
                });
            }
        });

        this.textView.setText(place.getDescription());

    }

}

public class CustomMapView extends LinearLayout {

private MapView mapView;
private TextView textView;

public CustomMapView(Context context) {
    this(context, null);
}

public CustomMapView(Context context, AttributeSet attrs) {
    super(context, attrs);
    initialize(context);
}

public void onCreate(Bundle var1) {
    mapView.onCreate(var1);
}

public void onResume() {
    mapView.onResume();
}

public void onPause() {
    mapView.onPause();
}

public void onStart() {
    mapView.onStart();
}

public void onStop() {
    mapView.onStop();
}

public void onDestroy() {
    mapView.onDestroy();
}

public void onLowMemory() {
    mapView.onLowMemory();
}

public void onSaveInstanceState(Bundle var1) {
    mapView.onSaveInstanceState(var1);
}

private void initialize(Context context) {
    setOrientation(LinearLayout.VERTICAL);
    LayoutInflater.from(context).inflate(R.layout.map_view, this, true);

    this.mapView = ViewUtil.findById(this, R.id.map_view);
    this.textView = ViewUtil.findById(this, R.id.address_view);
}

public void display(Place place) {
    this.mapView.setVisibility(View.VISIBLE);
    this.imageView.setVisibility(View.GONE);

    this.mapView.getMapAsync(new OnMapReadyCallback() {
        @Override
        public void onMapReady(final @Nonnull GoogleMap googleMap) {

            googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(place.getLatLong(), 13));
            googleMap.addMarker(new MarkerOptions().position(place.getLatLong()));
            googleMap.setBuildingsEnabled(true);
            googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
            googleMap.getUiSettings().setAllGesturesEnabled(false);
            googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(place.getLatLong(), googleMap.getMaxZoomLevel() - 4));

            googleMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
                @Override
                public void onMapLoaded() {

                    googleMap.snapshot(new GoogleMap.SnapshotReadyCallback() {
                        @Override
                        public void onSnapshotReady(Bitmap bitmap) {

                            // it is not called
                        }
                    });
                }
            });
        }
    });

    this.textView.setText(place.getDescription());
}

public class MainActivity extends Activity {
    private CustomMapView customView;

    @Override
    public void onCreate(Bundle var1) {
        super.onCreate(var1);

        customView = ViewUtil.findById(this, R.id.custom_view_id);
        customView.onCreate(var1);
    }

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

    @Override
    public void onPause() {
        super.onPause();
        customView.onPause();
    }

    @Override
    public void onStart() {
        super.onStart();
        customView.onStart();
    }

    @Override
    public void onStop() {
        super.onStop();
        customView.onStop();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        customView.onDestroy();
    }

    @Override
    public void onLowMemory() {
        super.onLowMemory();
        customView.onLowMemory();
    }

    @Override
    public void onSaveInstanceState(Bundle var1) {
        super.onSaveInstanceState(var1);
        customView.onSaveInstanceState(var1);
    }
}