如何获取清单文件AndroidManifest中meta_data元素的信息

例如：

<application

android:name="com.xxx.xxx"

android:hardwareAccelerated="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/Theme.Guahao" >

<meta-data

android:name="BaiduMapKey"

android:value="2T6A2EwXRRn5WLFpGYSvIGqp" />

</application>

获取：

public String getMapKey() {

String keyString = "";

try {

ApplicationInfo appInfo = getPackageManager().getApplicationInfo(getPackageName(),

PackageManager.GET_META_DATA);

keyString = appInfo.metaData.getString("BaiduMapKey");

} catch (NameNotFoundException e) {

e.printStackTrace();

}

return keyString;

}