Question

我正在尝试从IntentService发送通知。我确实获得了所有日志，但没有得到通知（使用我的银河s8而不是模拟器）。

服务代码：

我尝试扩展Service，并且尝试使用调度程序，但没有一个起作用。

public class AppService extends IntentService {

    private NotificationManager mNotificationManager;
    public static final int NOTIFICATION_ID = 1;

    public AppService() {
        super("AppService");
    }

    @Override
    protected void onHandleIntent(@Nullable Intent intent) {
        Log.d("AppService", "Started");
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            // Restore interrupt status.
            Thread.currentThread().interrupt();
        }
        Log.d("AppService", "Sending notification");
        sendNotification("We might have some brand new movies to offer you!");
        Log.d("AppService", "Notification sent");
    }

    private void sendNotification(String msg) {
        mNotificationManager = (NotificationManager)
                this.getSystemService(Context.NOTIFICATION_SERVICE);
        Log.d("AppService", "1");
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
                new Intent(this, Analyze.class), 0);
        Log.d("AppService", "2");
        NotificationCompat.Builder mBuilder =
                new NotificationCompat.Builder(this)
                        .setContentTitle("MyCienma")
                        .setStyle(new NotificationCompat.BigTextStyle()
                                .bigText(msg))
                        .setSmallIcon(R.drawable.icon_500x500_no_edge)
                        .setContentText(msg);
        Log.d("AppService", "3");
        mBuilder.setContentIntent(contentIntent);
        Log.d("AppService", "4");
        mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
        Log.d("AppService", "5");
    }
}

我确实获得了所有日志，但是没有任何通知。我项目的最低版本是21，手机正在运行26。这有问题吗？

Answer 1

是的，只是因为您必须在android版本8.0（api 26）之后设置通知频道ID。

参考链接：here

希望！这将为您提供帮助。编码愉快...

Answer 2

在API v26之后，您必须为每个通知定义一个NotificationChannel

 NotificationManager mNotificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        NotificationChannel channel = new NotificationChannel("default",
                "YOUR_CHANNEL_NAME",
                NotificationManager.IMPORTANCE_DEFAULT);
        channel.setDescription("YOUR_NOTIFICATION_CHANNEL_DISCRIPTION");
        mNotificationManager.createNotificationChannel(channel);
    }

从IntentService发送通知不起作用？

2 个答案: