Cannot Start Activity Background in Android 10 [ Android Q ]

Start activity from receiver in Android Q

It is very important for the feature to start the activity immediately, so there is a way to continue starting the activity from the receiver?

No, sorry. Use a high-priority notification, so it appears in "heads-up" mode. The user can then rapidly tap on it to bring up your activity.

How to trigger a launch Activity intent when my app is closed on Android 10/Q?

As of Android 10 (API level 29), you cannot start activities from the background anymore.

There are a number of exceptions to this rule that may or may not apply to your given scenario.

If none of the exceptions apply, you might want to consider displaying a high-priority notification, possibly with a full-screen Intent.

Can't start activity from BroadcastReceiver on android 10

Android 10's restriction on background activity starts was announced about six months ago. You can read more about it in the documentation.

Use a high-priority notification, with an associated full-screen Intent, instead. See the documentation. This sample app demonstrates this, by using WorkManager to trigger a background event needing to alert the user. There, I use a high-priority notification instead of starting the activity directly:

val pi = PendingIntent.getActivity(
  appContext,
  0,
  Intent(appContext, MainActivity::class.java),
  PendingIntent.FLAG_UPDATE_CURRENT
)

val builder = NotificationCompat.Builder(appContext, CHANNEL_WHATEVER)
  .setSmallIcon(R.drawable.ic_notification)
  .setContentTitle("Um, hi!")
  .setAutoCancel(true)
  .setPriority(NotificationCompat.PRIORITY_HIGH)
  .setFullScreenIntent(pi, true)

val mgr = appContext.getSystemService(NotificationManager::class.java)

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
  && mgr.getNotificationChannel(CHANNEL_WHATEVER) == null
) {
  mgr.createNotificationChannel(
    NotificationChannel(
      CHANNEL_WHATEVER,
      "Whatever",
      NotificationManager.IMPORTANCE_HIGH
    )
  )
}

mgr.notify(NOTIF_ID, builder.build())

---

Related Topics