How to launch activity only once when app is opened for first time?

Question

I have an activity that i only want to run when the application is ran for the first time.

And never again. It is a facebook login activity. I only want to launch it once when the app is initially opened for the first time.

How do i go about doing this?

Answer 1

Post the following code within your onCreate statement

   Boolean isFirstRun = getSharedPreferences("PREFERENCE", MODE_PRIVATE)             .getBoolean("isFirstRun", true);      if (isFirstRun) {         //show start activity          startActivity(new Intent(MainActivity.this, FirstLaunch.class));         Toast.makeText(MainActivity.this, "First Run", Toast.LENGTH_LONG)                 .show();     }          getSharedPreferences("PREFERENCE", MODE_PRIVATE).edit()                 .putBoolean("isFirstRun", false).commit(); 

Replace FirstLaunch.class with the class that you would like to launch

Answer 2

What I've generally done is add a check for a specific shared preference in the Main Activity : if that shared preference is missing then launch the single-run Activity, otherwise continue with the main activity . When you launch the single run Activity create the shared preference so it gets skipped next time.

EDIT : In my onResume for the default Activity I do this:

    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());     boolean previouslyStarted = prefs.getBoolean(getString(R.string.pref_previously_started), false);     if(!previouslyStarted) {         SharedPreferences.Editor edit = prefs.edit();         edit.putBoolean(getString(R.string.pref_previously_started), Boolean.TRUE);         edit.commit();         showHelp();     } 

Basically I load the default shared preferences and look for the previously_started boolean preference. If it hasn't been set I set it and then launch the help file. I use this to automatically show the help the first time the app is installed.