Run Task when app start

SharedPreferences preferences;
boolean isFirstRun;


// In Onstart Method

preferences = PreferenceManager.getDefaultSharedPreferences(this);

            isFirstRun = preferences.getBoolean("FIRSTRUN", true);


            if (isFirstRun) {

                SharedPreferences.Editor editor = preferences.edit();
                editor.putBoolean("FIRSTRUN", false);
                editor.commit();
            } else {

           
            }