To add an OnboardingSupportFragment to your app, implement a class that extends the OnboardingSupportFragment class. Add this fragment to an activity, either via the activity's layout XML, or programmatically. Make sure the activity or fragment is using a theme derived from Theme_Leanback_Onboarding, as described in Customize themes.
In the onCreate() method of your app's main activity, call startActivity() with an Intent that points to your OnboardingSupportFragment's parent activity. This ensures that your OnboardingSupportFragment appears as soon as your app starts.
To ensure that the OnboardingSupportFragment only appears the first time that the user starts your app, use a SharedPreferences object to track whether the user has already viewed the OnboardingSupportFragment. Define a boolean value that changes to true when the user finishes viewing the OnboardingSupportFragment. Check this value in your main activity’s onCreate(), and only start the OnboardingSupportFragment parent activity if the value is false. The following example shows an override of onCreate() that checks for a SharedPreferences value and, if not set to true, calls startActivity() to show the OnboardingSupportFragment:
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