如何在 Lollipop 通知中添加暂停/播放按钮？

Question

我有播放收音机和创建通知的服务。通知必须包括标题、文本、时间和按钮（暂停/播放）。我已经添加了其余的东西，并且正在显示通知。但我不确定如何将按钮添加到通知中。在搜索中，我发现我可以使用 RemoteView、RemoteControlClient 和 MediaStyles。但 RemoteControlClient 和 MediaStyles 用于播放所有按钮（上一个、暂停、播放、后退）的媒体文件。所以我真的很困惑。谁能建议我，使用哪一个在棒棒糖的通知中添加按钮。

Answer 1

首先你需要知道 addAction 在 23 API 中被弃用，阅读 this 来关联

调用showNotification()方法显示通知

 private void showActionButtonsNotification() {


        Notification.Builder notif;
        NotificationManager nm;
        notif = new Notification.Builder(getApplicationContext());
        notif.setSmallIcon(R.mipmap.ic_launcher);
        notif.setContentTitle("Hi there!");
        notif.setContentText("This is even more text.");
        Uri path = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        notif.setSound(path);
        nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        Intent yesReceive = new Intent();
        yesReceive.setAction(MyNotificationReceiver.RESUME_ACTION);
        PendingIntent pendingIntentYes = PendingIntent.getBroadcast(this, MyNotificationReceiver.REQUEST_CODE_NOTIFICATION, yesReceive, PendingIntent.FLAG_UPDATE_CURRENT);
        notif.addAction(R.drawable.resume, "resume", pendingIntentYes);


        Intent yesReceive2 = new Intent();
        yesReceive2.setAction(MyNotificationReceiver.STOP_ACTION);
        PendingIntent pendingIntentYes2 = PendingIntent.getBroadcast(this, MyNotificationReceiver.REQUEST_CODE_NOTIFICATION, yesReceive2, PendingIntent.FLAG_UPDATE_CURRENT);
        notif.addAction(R.drawable.stop, "stop", pendingIntentYes2);




        Intent maybeReceive2 = new Intent();
        maybeReceive2.setAction(MyNotificationReceiver.CANCEL_ACTION);
        PendingIntent pendingIntentMaybe2 = PendingIntent.getBroadcast(this, MyNotificationReceiver.REQUEST_CODE_NOTIFICATION, maybeReceive2, PendingIntent.FLAG_UPDATE_CURRENT);
        notif.addAction(R.drawable.cancel, "cancel", pendingIntentMaybe2);


        assert nm != null;
        nm.notify(MyNotificationReceiver.REQUEST_CODE, notif.getNotification());


    }

创建MyNotificationReceiver 类以接收点击

    public class MyNotificationReceiver extends BroadcastReceiver {
        public static int REQUEST_CODE_NOTIFICATION = 1212;
        public static int REQUEST_CODE = 10;
        public static final String RESUME_ACTION = "RESUME_ACTION";
        public static final String STOP_ACTION = "STOP_ACTION";
        public static final String CANCEL_ACTION = "CANCEL_ACTION";

        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();

            Log.e("action", action);

            if (intent.getAction() != null) {
                switch (intent.getAction()) {
                    case RESUME_ACTION :
                        Toast.makeText(context, "resume", Toast.LENGTH_SHORT).show();
// you resume action
                        break;
                    case STOP_ACTION :
                        Toast.makeText(context, "stop", Toast.LENGTH_SHORT).show();
// you stop action
                        break;
                    case CANCEL_ACTION:
                        Toast.makeText(context, "cancel", Toast.LENGTH_SHORT).show();
// you cancel action
                        break;
                }
            }
        }



    }

最后，将receiver 添加到您的manifests

<receiver android:name=".MyNotificationReceiver">
            <intent-filter>
                <action android:name="RESUME_ACTION"/>
                <action android:name="STOP_ACTION"/>
                <action android:name="CANCEL_ACTION"/>

            </intent-filter>
        </receiver>