Broadcast receiver not working when closed app

Question

When the incoming call to the phone popup on the screen. The application is running when it is open. However, when I close the application completely, the phone does not show a popup even though there is a voice call. The broadcast receiver does not work after the application is closed.

My device is Xiaomi Mi8

This is my code:

public class CallBarring extends BroadcastReceiver {

    private CustomDialog dialog;
    private TelephonyManager telephonyManager;
    private PhoneStateListener listener;
    private Context context;
    private Button btnEndCall;
    private TextView incomingNumberName;
    private List<String> data;

    final NumberInfo numberInfo = new NumberInfo();
    Retrofit retrofit = NetworkClient.getRetrofitClient();
    NumberAPI numberAPI = retrofit.create(NumberAPI.class);
    @Override
    public void onReceive(Context context, Intent intent) {

        if (!intent.getAction().equals("android.intent.action.PHONE_STATE"))
            return;

        else {
            this.context = context;
            if(dialog == null){
                dialog = new CustomDialog(context);
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                    dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY);
                }else{
                    dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
                }
                dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);
                dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
                        WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
                        WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
                dialog.show();
            }
            // Fetch the number of incoming call
            telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
            listener = new PhoneStateListener() {
                @Override
                public void onCallStateChanged(int state, String incomingNumber) {
                    String stateString = "N/A";
                    switch (state) {
                        case TelephonyManager.CALL_STATE_IDLE:
                            stateString = "Idle";
                            dialog.dismiss();
                            break;
                        case TelephonyManager.CALL_STATE_OFFHOOK:
                            stateString = "Off Hook";
                            dialog.dismiss();
                            break;
                        case TelephonyManager.CALL_STATE_RINGING:
                            stateString = "Ringing";
                            dialog.show();
                            break;
                    }
                }
            };

            telephonyManager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
            telephonyManager.listen(new PhoneStateListener(){
                @Override
                public void onCallStateChanged(int state, String incomingNumber) {
                    super.onCallStateChanged(state, incomingNumber);
                    System.out.println("incomingNumber : "+incomingNumber);
                    fetchUserInfo(incomingNumber);


                }
            },PhoneStateListener.LISTEN_CALL_STATE);

        }
    }

did you find any solution i am facing the same issue when app get killed this receiver doest not work but android documentation mentioned that this will work even after the app will get killed — Mateen Chaudhry, Oct 18 '20 at 07:30

score 1 · Answer 1 · answered Oct 21 '19 at 12:36

1

Many android device has power manager and dose mode concept. so background functionalities get stop when app is in background.

You can use foreground service to register you BroadcastReceiver to listen PHONE_STATE.

answered Oct 21 '19 at 12:36

Gautam Singh

37
4

You mean register a BroadcastReceiver **inside** of a foreground service? – IgorGanapolsky Oct 02 '20 at 00:46
Yes inside foreground service. – Gautam Singh Oct 02 '20 at 07:02

score 0 · Answer 2 · answered Oct 22 '19 at 15:24

0

You seem to be registering your broadcast receiver in an Activity (I'm assuming). This means that your receiver only works when the Activity is alive. But when the activity dies, the receiver gets unregistered and so won't listen for anything.

You need to register the receiver in the Manifest instead. That way, even when your app is closed, your receiver receives PHONE_STATE events and can fire off your logic.

<receiver
    android:name=".CallBarring"
    android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.PHONE_STATE" />
    </intent-filter>
</receiver>

docs: manifest declared receivers

answered Oct 22 '19 at 15:24

bibangamba

1,463
1
19
23

I did that but still was not able to show notification for incoming calls when the app is closed. – Mohamed Gharib May 07 '23 at 10:21
finally it worked for me, it turns out for some phone models there's an `Auto-Start` permission that needs to be enabled manually https://stackoverflow.com/questions/44383983/how-to-programmatically-enable-auto-start-and-floating-window-permissions – Mohamed Gharib May 07 '23 at 10:52

Broadcast receiver not working when closed app

2 Answers2