Kuidas saab push-teavituse abil liikuda konkreetse Fragmenti juurde?

To navigate to a specific Fragment via a push notification, a common approach is to use an Intent with additional data (extras), which is passed to the Activity, and then the Activity decides which Fragment to display.

Approximate algorithm:

1. In the push notification, pass data indicating the desired Fragment (e.g., a string identifier or enum).
2. In the method handling the notification click (PendingIntent), create an Intent to start the Activity.
3. In the Activity, in onCreate or onNewIntent, read the data from the Intent and replace the Fragment with the required one.

Code example:

// When creating the notification
val intent = Intent(context, MainActivity::class.java).apply {
    putExtra("target_fragment", "profile")
}
val pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)

// In MainActivity
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    val targetFragment = intent.getStringExtra("target_fragment")
    if (targetFragment != null) {
        val fragment = when(targetFragment) {
            "profile" -> ProfileFragment()
            "settings" -> SettingsFragment()
            else -> DefaultFragment()
        }
        supportFragmentManager.beginTransaction()
            .replace(R.id.fragment_container, fragment)
            .commit()
    }
}

This way, when the user taps the notification, they are directly taken to the desired screen.