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.
Every app gets a way to store preferences or options, so you can have one for whether or not the app has previously run
SharedPreferences runCheck = PreferenceManager.getSharedPreferences("hasRunBefore", 0); //load the preferences
Boolean hasRun = runCheck.getBoolean("hasRun", false); //see if it's run before, default no
if (!hasRun) {
SharedPreferences settings = getSharedPreferences("hasRunBefore", 0);
SharedPreferences.Editor edit = settings.edit();
edit.putBoolean("hasRun", true); //set to has run
edit.commit(); //apply
//code for if this is the first time the app has run
}
else {
//code if the app HAS run before
}