Question

How can I know if it is the first time the application launched?

If you are answering please add a full code because I have read some answers and I didn’t understand them.

Thanks.

Answer 1

Use sharedPreferences for the persistent data storage.when the application first launched just save a boolean value in the shared Preferences.Then check each time.

SharedPreferences sharedPref = getSharedPreferences("FileName",MODE_PRIVATE);
SharedPreferences.Editor prefEditor = sharedPref.edit();
prefEditor.putString("isLauncedTime",true);
prefEditor.commit();