Android获取Manifest中元素的值

转载:http://blog.csdn.net/zhanghao_hulk/article/details/8662917

在AndroidManifest.xml中,< meta-data>元素可以作为子元素,被包含在< activity>、< application> 、< service>和< receiver>元素中,不同的父元素,在应用时读取的方法也不同。

1 :在Activity应用< meta-data>元素。

xml代码段:

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

java代码段:

ActivityInfo info=this.getPackageManager()
                      .getActivityInfo(getComponentName(),
                          PackageManager.GET_META_DATA);
String msg =info.metaData.getString("data_Name");
Log.d(TAG, " msg == " + msg );

2:在application应用 < meta-data>元素。

xml代码段:

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

java代码段:

ApplicationInfo appInfo = this.getPackageManager().getApplicationInfo(getPackageName(), PackageManager.GET_META_DATA);

String msg=appInfo.metaData.getString("data_Name");
Log.d(TAG, " msg == " + msg );

3:在service应用< meta-data>元素。

xml代码段:

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

java代码段:

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 );

4: 在receiver应用< meta-data>元素。

xml代码段:

 <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>

java代码段:

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 );

你可能感兴趣的:(android,meta-data)