Read Manifest Values in ANDROID

 
        try {
               PackageManager manager = this.getPackageManager();
               PackageInfo info = manager.getPackageInfo(this.getPackageName(),PackageManager.GET_ACTIVITIES);
               Toast.makeText(
                 this,
                 "PackageName = " + info.packageName + "\nVersionCode = "
                   + info.versionCode + "\nVersionName = "
                   + info.versionName + "\nActivities = "+info.activities[0], Toast.LENGTH_LONG).show();
              } catch (Exception e) {
               System.out.println(" Exception in onCreate() : e = " + e);
              }
           
we need to place this code in onCreate method of Activity...........