安卓谷歌API "Failed to load Map"



我正在尝试显示谷歌地图的地图。

我遵循了本教程。

我修复了一些问题,应用程序运行了,但我无法显示地图。

我做了什么:

  • 在谷歌控制台上创建了一个API项目
  • 创建了一个ID
  • 激活"谷歌地图Android API v2"服务
  • 生成新的安卓密钥
  • 已在清单中导入此密钥
  • 遵循此视频安装库

这里是我的.java:

public class MainActivity extends FragmentActivity {
private static GoogleMap mMap = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
    if(status == ConnectionResult.SUCCESS){
       if (mMap == null) {
          mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
          if (mMap != null) {
            UiSettings settings = mMap.getUiSettings();
            settings.setZoomControlsEnabled(true);
            settings.setCompassEnabled(true);
            settings.setRotateGesturesEnabled(true);
            settings.setTiltGesturesEnabled(true);
            settings.setScrollGesturesEnabled(true);
            settings.setZoomControlsEnabled(true);
            settings.setZoomGesturesEnabled(true);
            settings.setMyLocationButtonEnabled(false);
            mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
            mMap.setMyLocationEnabled(false);
            }
          }
       }
    }
    protected void onResume() {
        super.onResume();
        int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
        if(status == ConnectionResult.SUCCESS){
           if (mMap == null) {
              mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
              if (mMap != null) {
                UiSettings settings = mMap.getUiSettings();
                settings.setZoomControlsEnabled(true);
                settings.setCompassEnabled(true);
                settings.setRotateGesturesEnabled(true);
                settings.setTiltGesturesEnabled(true);
                settings.setScrollGesturesEnabled(true);
                settings.setZoomControlsEnabled(true);
                settings.setZoomGesturesEnabled(true);
                settings.setMyLocationButtonEnabled(false);
                mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
                mMap.setMyLocationEnabled(false);
              }
          }
     }
 }

my activity_main.xml:

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

</LinearLayout>

我的清单:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.map"
    android:versionCode="1"
    android:versionName="1.0" >
    <permission android:name="com.example.map.permission.MAPS_RECEIVE" android:protectionLevel="signature"/>
    <uses-permission android:name="com.example.map.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" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>
    <uses-sdk
        android:minSdkVersion="12"
        android:targetSdkVersion="17" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <uses-library android:name="com.google.android.maps" />
        <activity
            android:name="com.example.map.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="<MyKey>"/>
    </application>
</manifest>

在应用程序标签内(在清单中)添加:

<uses-library android:name="com.google.android.maps" />

用以下内容替换您的片段XML:

<fragment
      android:id="@+id/map"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      class="com.google.android.gms.maps.SupportMapFragment"
    />

让你的活动扩展FragmentActivity,onCreate和onResume调用这个代码:

int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
if(status == ConnectionResult.SUCCESS){
   if (mMap == null) {
      mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
      if (mMap != null) {
        UiSettings settings = mMap.getUiSettings();
        settings.setZoomControlsEnabled(true);
        settings.setCompassEnabled(true);
        settings.setRotateGesturesEnabled(true);
        settings.setTiltGesturesEnabled(true);
        settings.setScrollGesturesEnabled(true);
        settings.setZoomControlsEnabled(true);
        settings.setZoomGesturesEnabled(true);
        settings.setMyLocationButtonEnabled(false);
        mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        mMap.setMyLocationEnabled(false);
      }
    }
}

不要忘记像这样声明mMap变量:

private GoogleMap mMap;

基于nsvir早期的编辑,生成一个新的debug.keystore和一个新密钥解决了这个问题。

本文中的信息有助于进一步了解证书。

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