How do I notify the "current" activity from a service or an alarm?
I am making an app that has 2 activities a service and an alarm.
How can I find the "current activity开发者_如何学编程" from the service or the alarm ?
A) IE replace
Intent notificationIntent = new Intent(this, RatActivity.class); with Intent notificationIntent = new Intent(this, "CurrenActivity.class");B) If an activity is visible tell it to look at a database if not visible put up a notification.
I have looked around quite a bit (including docs) and I still can't figure out.
Any help is appreciated.
This has pretty much been covered in Android: How can I get the current foreground activity (from a service)?
However, it might be simplest to toggle a value in SharedPreferences within the Activity onPause/onResume callbacks. See the Activity lifecycle docs for more info, specifically so you can cater for unexpected Activity termination.
Hope this helps,
Phil Lello
精彩评论