How to add button to notifications in android?

问题:

My app plays music and when users open notifications screen by swiping from the top of the screen ( or generall from the bottom right of the screen on tablets ), i want to present them a button to stop the currently playing music and start it again if they want.

I am not planning to put a widget on user's homescreen, but just into notifications. How can i do this?

回答1:

Add action button to notification

Intent snoozeIntent = new Intent(this, MyBroadcastReceiver.class);
snoozeIntent.setAction(ACTION_SNOOZE);
snoozeIntent.putExtra(EXTRA_NOTIFICATION_ID, 0);
PendingIntent snoozePendingIntent =
        PendingIntent.getBroadcast(this, 0, snoozeIntent, 0);

NotificationCompat.Builder mBuilder = new 
NotificationCompat.Builder(this, CHANNEL_ID)
        .setSmallIcon(R.drawable.notification_icon)
        .setContentTitle("My notification")
        .setContentText("Hello World!")
        .setPriority(NotificationCompat.PRIORITY_DEFAULT)
        .setContentIntent(pendingIntent)
        .addAction(R.drawable.ic_snooze, getString(R.string.snooze),
                snoozePendingIntent);

For more details visit https://developer.android.com/training/notify-user/build-notification.html

回答2:

You can create an intent for the action (in this case stop playing)and that add it as an action button to your notification.

Intent snoozeIntent = new Intent(this, MyBroadcastReceiver.class);
snoozeIntent.setAction(ACTION_SNOOZE);
snoozeIntent.putExtra(EXTRA_NOTIFICATION_ID, 0);
PendingIntent snoozePendingIntent =
        PendingIntent.getBroadcast(this, 0, snoozeIntent, 0);

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID)
        .setSmallIcon(R.drawable.notification_icon)
        .setContentTitle("My notification")
        .setContentText("Hello World!")
        .setPriority(NotificationCompat.PRIORITY_DEFAULT)
        .setContentIntent(pendingIntent)
        .addAction(R.drawable.ic_snooze, getString(R.string.snooze),
                snoozePendingIntent);

Please refer to the Android Documentation here

回答3:

    // It shows buttons on lock screen (notification).

Notification notification = new Notification.Builder(context)
    .setVisibility(Notification.VISIBILITY_PUBLIC)
    .setSmallIcon(R.drawable.NotIcon)
    .addAction(R.drawable.ic_prev, "button1",ButtonOneScreen) 
    .addAction(R.drawable.ic_pause, "button2", ButtonTwoScreen)  
   .....
    .setStyle(new Notification.MediaStyle()
    .setShowActionsInCompactView(1)
    .setMediaSession(mMediaSession.getSessionToken())
    .setContentTitle("your choice")
    .setContentText("Again your choice")
    .setLargeIcon(buttonIcon)
    .build();

Please refer this for more details Click here

回答4:

I will try to provide a solution that I have used and most of the music player also use the same technique to show player controls in notification bar.

I am running a service which is used to manage Media Player and all its controls. Activity User control interacts with Service by sending Intents to the service for example

 Intent i = new Intent(MainActivity.this, MyRadioService.class);
        i.setAction(Constants.Player.ACTION_PAUSE);

        startService(i);

TO receive intents and perform action in Service class I am using following code in onStartCommand method of Service

 @Override
public int onStartCommand(Intent intent, int flags, int startId) {


    if (intent.getAction().equals(Constants.Player.ACTION_PAUSE)) {
        if(mediaPlayer.isPlaying()) {
            pauseAudio();
        }
    }

Now to exact answer to your question to show notification with playing controls. You can call following methods to show notification with controls.

   //    showNotification
private void startAppInForeground() {
//  Start Service in Foreground

    // Using RemoteViews to bind custom layouts into Notification
    RemoteViews views = new RemoteViews(getPackageName(),
            R.layout.notification_status_bar);

// Define play control intent 
   Intent playIntent = new Intent(this, MyRadioService.class);
    playIntent.setAction(Constants.Player.ACTION_PLAY);

// Use the above play intent to set into PendingIntent
    PendingIntent pplayIntent = PendingIntent.getService(this, 0,
            playIntent, 0);

// binding play button from layout to pending play intent defined above 
views.setOnClickPendingIntent(R.id.status_bar_play, pplayIntent);
views.setImageViewResource(R.id.status_bar_play,
            R.drawable.status_bg);

Notification status = null;
 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        status = new Notification.Builder(this).build();
    }

  status.flags = Notification.FLAG_ONGOING_EVENT;
    status.icon = R.mipmap.ic_launcher;
    status.contentIntent = pendingIntent;
    startForeground(Constants.FOREGROUND_SERVICE, status);

} Hope this really helps you. And you will be able to achieve what you want. Have a Happy Coding :)