Get the versionCode & versionName attributes from `AndroidManifest.xml` at runtime

GetVersion.java

import android.app.Activity;

// http://stackoverflow.com/questions/3874775/detect-my-apps-own-androidversioncode-at-run-time
public class GetVersion {
  public static Integer getVersion(Activity activity) {
    Integer version = 0;
    try {
        version = activity.getPackageManager().getPackageInfo(getPackageName(), 0).versionCode;
    } catch (NameNotFoundException e) {
      // Todo: handle
    }
    return version;
  }
}