Execute an action on notification click

Question

I have an application which uses a persistent notification within a service and runs in the background. While this service is running, I need to be able to call a method/do some action when the notification is clicked. However, I'm not sure how to implement this. I have read through many similar questions/answers, however none were answered clearly or suitably to my purposes. This SO questions comes close to what I am trying to achieve, but the chosen answer is hard to understand.

My service/notification is started in the onCreate() method for my BackgroundService class...

Notification notification = new Notification();
    startForeground(1, notification);
    registerReceiver(receiver, filter);

and this service is launched from my main activity's button click:

final Intent service = new Intent(Main.this, BackgroundService.class);

bStart.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            if((counter % 2) == 0){

                bStart.setText("STOP");
                startService(service);

            }else {
                bStart.setText("BEGIN");
                stopService(service);
            }

            counter++;

        }

any advice is appreciated

Answer 1

You'll have to use a BroadcastReceiver for that. Take a look at the following code. Put it in your Service

private MyBroadcastReceiver mBroadcastReceiver;
@Override
onCreate() {
    super.onCreate();
    mBroadcastReceiver = new MyBroadcastReceiver();
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addCategory(Intent.CATEGORY_DEFAULT);
    // set the custom action
    intentFilter.addAction("do_something");

    registerReceiver(mBroadcastReceiver, intentFilter);
}



// While making notification
Intent i = new Intent("do_something");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, i, 0);
notification.contentIntent = pendingIntent;




public class MyBroadcastReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            switch(action) {
                case "do_something":
                    doSomething();
                    break;
            }
        }
    }

public void doSomething() {
    //Whatever you wanna do on notification click
}

This way the doSomething() method will be called when your Notification is clicked.