[转] Android获取Manifest中<meta-data>元素的值

  <application...>
       <meta-data android:value="hello my application" android:name="data_Name"></meta-data>
   </application>

    ApplicationInfo appInfo = this.getPackageManager()
                                  .getApplicationInfo(getPackageName(),
                          PackageManager.GET_META_DATA);
    String msg=appInfo.metaData.getString("data_Name");
    Log.d(TAG, " msg == " + msg );

   <service android:name="MetaDataService">
      <meta-data android:value="hello my service" android:name="data_Name"></meta-data>
   </service>

   ComponentName cn=new ComponentName(this, MetaDataService.class);
   ServiceInfo info=this.getPackageManager()
                        .getServiceInfo(cn, PackageManager.GET_META_DATA);
    String msg=info.metaData.getString("data_Name");
    Log.d(TAG, " msg == " + msg );

    <receiver android:name="MetaDataReceiver">
            <meta-data android:value="hello my receiver" android:name="data_Name"></meta-data>
            <intent-filter>
                <action android:name="android.intent.action.PHONE_STATE"></action>
            </intent-filter>
    </receiver>

    ComponentName cn=new ComponentName(context, MetaDataReceiver.class);
    ActivityInfo info=context.getPackageManager()
                             .getReceiverInfo(cn, PackageManager.GET_META_DATA);
    String msg=info.metaData.getString("data_Name");
    Log.d(TAG, " msg == " + msg );