Detect CONNECTIVITY CHANGE in Android 7 and above when app is killed/in background

Question

Problem:

So the problem is that I have an app which sends a request to our backend whenever WiFi is connected (with the connected SSID and other inf

Answer 1

Below is excerpt from documentation

Apps targeting Android 7.0 (API level 24) and higher do not receive CONNECTIVITY_ACTION broadcasts if they declare the broadcast receiver in their manifest. Apps will still receive CONNECTIVITY_ACTION broadcasts if they register their BroadcastReceiver with Context.registerReceiver() and that context is still valid.

So you will get this Broadcast till your context is valid in Android N & above by explicitly registering for same.

Boot Completed:

You can listen android.intent.action.BOOT_COMPLETED broadcast you will need this permission for same.

App Killed Scenario:

You are not going to receive it.

That is very much expected and due to various reasons

• Android Oreo has limitations on running services in background, so you may face this on O devices

• Doze mode on Android Marshmallow onwards can cause this, it will stop all network operations itself & take away CPU wake locks

• Though Doze mode have one mechanism for requesting whitelisting of apps, this might be useful for you.