引导完成后，服务中的BroadcastReceiver无法正常工作

Question

I am using a Service to listen for a broadcast after boot completed. But the BroadcastReceiver is not registering when boot completed. If instead of a Service I use a BroadcastReceiver to listen for boot completed it works. It doesn't when I register it with a Service. What am I doing wrong? Code is given below.

private BroadcastReceiver sim_change;
public void onCreate() {
    // TODO Auto-generated method stub
    super.onCreate();

    IntentFilter filter = new IntentFilter();
    filter.addAction(action);

    sim_change = new BroadcastReceiver() {

        @Override
        public void onReceive(Context context, Intent intent) {
            // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(), "Boradcast Receiver registered successfully", Toast.LENGTH_LONG).show();

        }
    };

    registerReceiver(sim_change, filter);

}@Override
public void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
    unregisterReceiver(sim_change);
    Toast.makeText(getApplicationContext(), "Boradcast Receiver unregistered successfully", Toast.LENGTH_LONG).show();

}

Answer 1

You have to register for BOOT_COMPLETED in your Manifest. It doesn't make sense to register for it from a Service, because the Service won't be running at boot in order to register for it.

Answer 2

You can't register for BOOT_COMPLETED from within a Service because the reboot removes that registration.

You must do it from your BroadcastReceiver .

There are many ways to handle the enable/disable feature - either using the suggested setComponentEnabledSetting() , or just by storing a value in the app's shared preferences, which you can check when your service starts.