广播接收器在 oreo 和 pie android 中不起作用

Question

Boot broadcast receiver is not working and there is nothing in onReceive()

public class BootReceived extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {

    if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
        Toast.makeText(context, intent.getAction(), Toast.LENGTH_LONG).show();

        Log.d("IfWalaBooot", intent.getAction());

        Intent intent1 = new Intent(context, MainActivity.class);
        intent1.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent1);

        Intent tni = new Intent(context, MainService.class);
        tni.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startService(tni);

    }

}

Answer 1

You need to use registerReceiver in order to work in android oreo & above. Starting from oreo there is background restriction.

You can use this link to learn about it. https://www.journaldev.com/23653/android-oreo-implicit-and-explicit-broadcast-receiver

Answer 2

1. Make sure that you have registered your receiver in Manifest .
2. Implicit Broadcast Exceptions refer to this link to check if your implicit receiver is in exception list or not.
3. if not in exception the you can make job scheduler or register your receiver in your code itself .Here is a nice snippet you could refer on It's time to kiss goodbye to your implicit BroadcastReceivers