谷歌地图Android的API V2 - 地图不显示

问题描述：

我跟着这个教程：How can I create an Android application in Android Studio that uses the Google Maps Api v2?谷歌地图Android的API V2 - 地图不显示

而且我编译，并得到样品的地图应用程序我的设备上运行。唯一的问题是地图不显示在我的应用程序中，我得到的只是空白屏幕。

我的AndroidManifest.xml（所有我改变的是apikey）

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.mapdemo" 
    android:versionCode="3" 
    android:versionName="2.2.1"> 
    <permission 
android:name="com.example.mapdemo.permission.MAPS_RECEIVE" 
android:protectionLevel="signature"/> 
    <uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE"/> 
    <!-- Copied from Google Maps Library/AndroidManifest.xml. --> 
    <uses-sdk 
android:minSdkVersion="8" 
android:targetSdkVersion="17"/> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 
    <uses-permission android:name="android.permission.INTERNET"/> 
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> 
    <!-- External storage for caching. --> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
    <!-- My Location --> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 
    <!-- Maps API needs OpenGL ES 2.0. --> 
    <uses-feature 
    android:glEsVersion="0x00020000" 
     android:required="true"/> 
    <!-- End of copy. --> 
    <application 
android:icon="@drawable/ic_launcher" 
android:label="@string/demo_title" 
android:hardwareAccelerated="true"> 
<!-- ** You need to replace the key below with your own key. ** 
    The example key below will not be accepted because it is not linked to the 
    certificate which you will use to sign this application. 
    See: https://developers.google.com/maps/documentation/android/start 
    for instructions on how to get your own key. --> 
<meta-data android:name="com.google.android.maps.v2.API_KEY" 
android:value="MyOwnGeneratedKey"/> 
<activity android:name=".MainActivity"> 
    <intent-filter> 
    <action android:name="android.intent.action.MAIN"/> 
    <category android:name="android.intent.category.LAUNCHER"/> 
    </intent-filter> 
</activity> 
<activity 
    android:name=".BasicMapActivity" 
    android:label="@string/basic_map"/> 
<activity 
    android:name=".CameraDemoActivity" 
    android:label="@string/camera_demo"/> 
<activity 
    android:name=".CircleDemoActivity" 
    android:label="@string/circle_demo"/> 
<activity 
    android:name=".EventsDemoActivity" 
    android:label="@string/events_demo"/> 
<activity 
    android:name=".GroundOverlayDemoActivity" 
    android:label="@string/groundoverlay_demo"/> 
<activity 
    android:name=".LayersDemoActivity" 
    android:label="@string/layers_demo"/> 
<activity 
    android:name=".LegalInfoActivity" 
    android:label="@string/legal_info"/> 
<activity 
    android:name=".LocationSourceDemoActivity" 
    android:label="@string/locationsource_demo"/> 
<activity 
    android:name=".MarkerDemoActivity" 
    android:label="@string/marker_demo"/> 
<activity 
    android:name=".MultiMapDemoActivity" 
    android:label="@string/multi_map_demo"/> 
<activity 
    android:name=".MyLocationDemoActivity" 
    android:label="@string/my_location_demo"/> 
<activity 
    android:name=".OptionsDemoActivity" 
    android:label="@string/options_demo"/> 
<activity 
    android:name=".PolygonDemoActivity" 
    android:label="@string/polygon_demo"/> 
<activity 
    android:name=".PolylineDemoActivity" 
    android:label="@string/polyline_demo"/> 
<activity 
    android:name=".ProgrammaticDemoActivity" 
    android:label="@string/programmatic_demo"/> 
<activity 
    android:name=".RawMapViewDemoActivity" 
    android:label="@string/raw_mapview_demo"/> 
<activity 
    android:name=".RetainMapActivity" 
    android:label="@string/retain_map"/> 
<activity 
    android:name=".SaveStateDemoActivity" 
    android:label="@string/save_state_demo"/> 
<activity 
    android:name=".TileOverlayDemoActivity" 
    android:label="@string/tile_overlay_demo"/> 
<activity 
    android:name=".UiSettingsDemoActivity" 
    android:label="@string/uisettings_demo"/> 
    </application> 
</manifest>

使用我调试指纹创建控制台键，它看起来像这样：

A1:FE:B5:E2:5E:0E:1A:8E:CC:8F:07:CC:4D:D0:95:13:0B:E7:1B:EC;com.example.mapdemo

的logcat的地图：

08-03 02:41:14.330 13942-14784/com.example.mapdemo I/Google Maps Android API: Failed to   contact Google servers. Another attempt will be made when connectivity is established. 
08-03 02:41:29.840 13942-14812/com.example.mapdemo E/Google Maps Android API: Failed to load map. Error contacting Google servers. This is probably an authentication issue (but could be due to network errors).

[检查此帖]（http://*.com/questions/17679317/android-google-maps-v2-authentication-error/17684309#17684309），如果是这样的话。 –

您必须使用释放键，而不是调试键。 – svlzx

答

<meta-data android:name="com.google.android.maps.v2.API_KEY" 
    android:value="MyOwnGeneratedKey"/>

你需要使用Google API控制台来生成您自己的密钥

A1:FE:B5:E2:5E:0E:1A:8E:CC:8F:07:CC:4D:D0:95:13:0B:E7:1B:EC;com.example.mapdemo

然后在清单中将其替换。格式应该是类似于

AIzaSyB-sKpf4b9kSM6DX40WyjExC7VTRabAvcw

此外，您还需要轻弹在服务页面上的谷歌地图API第2开关API控制台中的东西。

我做到了;）我有我自己的密钥清单，我输入MyOwnGeneratedKay只是为了张贴在这里:) – pawel

@pawel显示您的地图activitty代码和xml布局 – Raghunandan

答

更新您的谷歌通过Android的SDK管理器播放服务，然后在Eclipse中导入它，因为它有新的更新使用它，然后将这些行添加到从您maifest-

缺少元素中的清单文件

<meta-data 
    android:name="com.google.android.gms.version" 
    android:value="@integer/google_play_services_version" />

谷歌地图Android的API V2 - 地图不显示

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