Question

I have deployed my app and it’s in use. Every month or so I update it and add new features. I would like to show “new” image only the first time when the updated app is used by the user. How can I show it just once ? Where should I start ?

Answer 1

Maybe something like this may help to solve your problem:

public class mActivity extends Activity {
  @Overrride
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      this.setContentView(R.id.layout);

      // Get current version of the app
      PackageInfo packageInfo = this.getPackageManager()
          .getPackageInfo(getPackageName(), 0);
      int version = packageInfo.versionCode;

      SharedPreferences sharedPreferences = this.getPreferences(MODE_PRIVATE);
      boolean shown = sharedPreferences.getBoolean("shown_" + version, false);

      ImageView imageView = (ImageView) this.findViewById(R.id.newFeature);
      if(!shown) {
          imageView.setVisibility(View.VISIBLE);

          // "New feature" has been shown, then store the value in preferences
          SharedPreferences.Editor editor = sharedPreferences.edit();
          editor.put("shown_" + version, true);
          editor.commit();
      } else
          imageView.setVisibility(View.GONE);
  }

The next time you run the application, the image will not show.