I have a reminder app that sends a notification according to the time of the item in the listview, the problem is that whenever my phone is rebooted or the app is killed, the app doesn't send any notification.

Note: The app is offline and local, it doesn't use internet connection, I don't use FCM or and online services for this app.

Thank you so much for your time.

Update: I'm using a thread that searches for data in the local database, If there are any changes in time in the database compared to the current time, the notification should show, but the notification only shows when the app is running, but when the app is killed it doesn't show.
The app needs to run on android 5 ,

CodePudding user response：

You can use Broadcast receiver in order to be notified when Boot Completes. And again start the required services of your app.

For reference, have a look here.

CodePudding user response：

This is because when you are killing the app, the onDestroy method gets called. When it's killed, you app is not doing anything. For this you would need a broadcast receiver. You can follow this tutorial and maybe it might help you in it.