從 IntentService 發送通知不起作用？

Question

我正在嘗試從 IntentService 發送通知。 我確實收到了所有日志，但沒有收到通知（使用我的 Galaxy s8 而不是模擬器）。

我嘗試擴展 Service 並嘗試使用調度程序，但兩者都不起作用。

服務代碼：

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");
    }
}

我確實收到了所有日志，但沒有收到任何通知。 我的項目的最低版本是 21，我的手機運行的是 26。這是一個問題嗎？

Answer 1

是的，只是因為您必須在 android 版本 8.0(api 26) 之后設置通知頻道 ID。

參考鏈接： 這里

希望！ 這會幫助你。 快樂編碼...

Answer 2

在 API v26 之后，您必須為每個通知定義一個 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);
}