如何从后台服务的全屏意图通知 Android 打开活动

Question

Project min API KitKat(19), project target API Android 10(30)

I am trying to do something to the effect of launching an activity from my background service. I understand that launching an activity from a background service is explicitly impossible as of API 29.

However, would it be possible to create a full-screen intent notification and a broadcast receiver for that notification which automatically opens an activity from my app? Or, will the user still have to click on the full-screen notification before the activity could be launched?

If automatically launching an activity from a broadcast receiver in this way is possible, how would it be done?

Thank you!

Answer 1

You can open activity from the background by adding "SYSTEM_ALERT_WINDOW" permission to the manifest and ask for user permission once when the app opened the first time by calling startActivity(new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION)); somewhere in your app and granting permission to your app.