Log in screen on first start

Question

how would you create an activity that only runs when the application is started for the first time ever and provides the user with a screen to input a pin and \"unlock\" the app

Answer 1

You can use sharedPreferences:

boolean firstTime = prefs.getBoolean("firstTime", true);
if(firstTime) {
    SharedPreferences.Editor editor = prefs.edit();
    editor.putBoolean("firstTime", false);
    editor.commit();

    //do your first time "operations" here E.G read configuration, show user guide
}