/**
* 从Manifest中获取meta-data值
* @param context
* @param key
* @return
*/
public static String getMetaData(Context context,String key) {
String value = null;
try {
ApplicationInfo appInfo = context.getPackageManager().getApplicationInfo(
context.getPackageName(), PackageManager.GET_META_DATA);
value = appInfo.metaData.getString(key);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
if (value==null) value="";
return value;
}