read android app meta-data

gistfile1.java

// get meta-data from AndroidManifest.xml
ApplicationInfo ai = getPackageManager().getApplicationInfo(getPackageName(), PackageManager.GET_META_DATA);
String meta = ai.metaData.getString("key");

// get version name and version code
PackageInfo pinfo = getPackageManager().getPackageInfo(getPackageName(), 0);
String versionName = pinfo.versionName;
int versionCode = pinfo.versionCode;