I am trying to listen for any incoming SMS messages on an Android device and then showing a toast in my Flutter app whenever an SMS is received. I am connecting to Flutter through EventChannel and detecting SMS using a BroadcastReceiver. How do I send an events.success(message) whenever my broadcast receiver detects an SMS?
I tried adding the BroadcastReceiver directly inside the EventChannel but that did not work. The flutter SMS package also doesn't seem to work.
This is what my MainActivity looks like:
public class MainActivity extends FlutterActivity{
public static final String STREAM = "com.myapp.thisapp/stream";
public static final String TAG = "THIS IS A MESSAGE: ";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
GeneratedPluginRegistrant.registerWith(this);
new EventChannel(getFlutterView(), STREAM).setStreamHandler(
new EventChannel.StreamHandler() {
@Override
public void onListen(Object args, final
EventChannel.EventSink events) {
//Send events.success() when SMS received
Log.w(TAG, "adding listener");
}
@Override
public void onCancel(Object args) {
Log.w(TAG, "cancelling listener");
}
}
);
}
}
And this is the code for my BroadcastReceiver:
public class IncomingSmsBroadcastReceiver extends BroadcastReceiver {
private static final String SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
@Override
public void onReceive(final Context context, final Intent intent) {
if (intent != null && SMS_RECEIVED.equals(intent.getAction())) {
final SmsMessage smsMessage = extractSmsMessage(intent);
processMessage(context, smsMessage);
}
}
private SmsMessage extractSmsMessage(final Intent intent) {
final Bundle pudsBundle = intent.getExtras();
final Object[] pdus = (Object[]) pudsBundle.get("pdus");
final SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) pdus[0]);
return smsMessage;
}
private void processMessage(final Context context, final SmsMessage smsMessage) {
//TODO: Send message to event channel
}
}
Whenever the BroadCastReceiver encounters an SMS, I want the content of the message to be sent to the EventChannel which will send the message text to the Flutter front-end. How do I do this?
