Determine if Android app is being used for the first time

Question

I am currently developing an android app. I need to do something when the app is launched for the first time, i.e. the code only runs on the first time the program is launch

Answer 1

I solved to determine whether the application is your first time or not , depending on whether it is an update.

private int appGetFirstTimeRun() {
    //Check if App Start First Time
    SharedPreferences appPreferences = getSharedPreferences("MyAPP", 0);
    int appCurrentBuildVersion = BuildConfig.VERSION_CODE;
    int appLastBuildVersion = appPreferences.getInt("app_first_time", 0);

    //Log.d("appPreferences", "app_first_time = " + appLastBuildVersion);

    if (appLastBuildVersion == appCurrentBuildVersion ) {
        return 1; //ya has iniciado la appp alguna vez

    } else {
        appPreferences.edit().putInt("app_first_time",
                appCurrentBuildVersion).apply();
        if (appLastBuildVersion == 0) {
            return 0; //es la primera vez
        } else {
            return 2; //es una versión nueva
        }
    }
}

Compute results:

• 0: If this is the first time.
• 1: It has started ever.
• 2: It has started once, but not that version , ie it is an update.