在版本2中,地图视图不显示地图

Question

地图活动不显示地图,它显示为带有缩放控制按钮的白色屏幕.清单文件如下:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.demomap"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
   <permission
        android:name="com.example.demomap.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />
    <uses-permission android:name="com.example.demomap.permission.MAPS_RECEIVE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
        <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.demomap.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="AIzaSyCTQZOcXFS3RpNSVe79HHN1xojat-2MbT4" />
    </application>
    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true" />
</manifest>

我的XmL文件像这样:

<?xml version="1.0" encoding="utf-8"?>
<fragment
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.SupportMapFragment" />

Log Cat错误:

05-15 17:15:16.255: E/Google Maps Android API(26201): Failed to load map. Error contacting Google servers. This is probably an authentication issue (but could be due to network errors).

请帮我.

Answer 1

也许钥匙不正确.您可以尝试以下方法:

• 要确保你喜欢输入正确的包名称此
• 测试更新最新谷歌播放的真实设备.或者在本指南中使用模拟器

• 在谷歌控制台网站上的 Android主动谷歌地图api v2

Answer 2

我使用MapView遇到了这个问题

fragment_map.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

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

    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
    String message = getArguments().getString(EXTRA_MESSAGE);
    v = inflater.inflate(R.layout.map_f, container, false);
    vh = new ViewHolder();
    assetHandler = new AssetHandler(getActivity());
    vh.mapView=assetHandler.mapViewHandler.set(v,R.id.mapview);
    vh.mapView.onCreate(savedInstanceState);

    vh.mapView.getMapAsync(new OnMapReadyCallback() {
        @Override
        public void onMapReady(GoogleMap googleMap) {
            googleMap.getUiSettings().setMyLocationButtonEnabled(true);
            googleMap.setMyLocationEnabled(true);
            // Needs to call MapsInitializer before doing any CameraUpdateFactory calls
            try {
                MapsInitializer.initialize(getActivity());
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    return v;
}


@Override
public void onResume() {
    super.onResume();
    vh.mapView.onResume();


}

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

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

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

我注意到如果没有实现LifeCycle方法,你也将无法看到地图.希望这对某些人有希望.

Answer 3

很多时候问题来自于不在清单中的权限中添加Google服务支持:

检查清单中是否存在此权限:

<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>

Answer 4

我更改了包名并更新了控制台.我有一切正确(清单中正确的SHA1密钥,包名称和API密钥)但仍然得到相同的错误消息.

我不得不卸载应用程序并重新启动手机以解决问题.似乎有些东西被缓存了.