Android 8.1升级后start前台失败

升级我的手机到8.1开发者预览后，我的后台服务不再正常启动。

在我的长时间运行的服务中，我实现了一个start前台方法来启动正在进行的通知，该通知在创建时被调用。

@TargetApi(Build.VERSION_CODES.O)
private fun startForeground() {
    // Safe call, handled by compat lib.
    val notificationBuilder = NotificationCompat.Builder(this, DEFAULT_CHANNEL_ID)

    val notification = notificationBuilder.setOngoing(true)
            .setSmallIcon(R.drawable.ic_launcher_foreground)
            .build()
    startForeground(101, notification)
}

错误信息:

11-28 11:47:53.349 24704-24704/$PACKAGE_NAMEE/AndroidRuntime: FATAL EXCEPTION: main
    Process: $PACKAGE_NAME, PID: 24704
    android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=My channel pri=0 contentView=null vibrate=null sound=null defaults=0x0 flags=0x42 color=0x00000000 vis=PRIVATE)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1768)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

无效的服务通知通道，显然我的旧通道DEFAULT_CHANNEL_ID不再适合API 27我假设。合适的渠道是什么?我试着看了一下文件

当前回答

如果你正在使用VPN库，这些代码将是有帮助的，我把它放在onCreate(savedInstanceState: Bundle?)

 NotificationChannelManager.createNotificationChannelIfNeeded(
            activity,
            channelName = "Chanel Name",
            channelDescription = "Channel description"
        )

2022-10-11 10:51:22

其他回答

这可能是旧的，但是，以防有人有和我一样的情况。出于某种原因，在Android 11 OnePlus Nord上

Notification.Builder().Build()

崩溃了,

NotificationCompat.Builder().Build()

工作很好。考虑迁移到androidx.core.app.NotificationCompat。

2022-05-14 11:54:16

我也有同样的问题。当我为两个应用程序使用相同的通道id和通知id时，出现了问题。所以请尝试使用唯一的通知id和通道id。

2021-05-05 16:29:55

替代答案:如果它是华为设备，并且您已经实现了Oreo 8 Android所需的要求，并且仅在华为设备上仍然存在问题，而不仅仅是设备问题，您可以阅读https://dontkillmyapp.com/huawei

2021-01-28 18:53:13

这是我的解决方案

private static final int NOTIFICATION_ID = 200;
private static final String CHANNEL_ID = "myChannel";
private static final String CHANNEL_NAME = "myChannelName";

private void startForeground() {

    final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            getApplicationContext(), CHANNEL_ID);

    Notification notification;



        notification = mBuilder.setTicker(getString(R.string.app_name)).setWhen(0)
                .setOngoing(true)
                .setContentTitle(getString(R.string.app_name))
                .setContentText("Send SMS gateway is running background")
                .setSmallIcon(R.mipmap.ic_launcher)
                .setShowWhen(true)
                .build();

        NotificationManager notificationManager = (NotificationManager) getApplication().getSystemService(Context.NOTIFICATION_SERVICE);

        //All notifications should go through NotificationChannel on Android 26 & above
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
                    CHANNEL_NAME,
                    NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(channel);

        }
        notificationManager.notify(NOTIFICATION_ID, notification);

    }

希望对大家有所帮助:)

2019-09-04 19:18:19

感谢@CopsOnRoad，他的解决方案是一个很大的帮助，但只适用于SDK 26或更高。我的应用目标是24岁以上。

为了避免Android Studio抱怨，你需要在通知周围设置条件。知道代码在一个以VERSION_CODE.O为条件的方法中是不够聪明的。

@Override
public void onCreate(){
    super.onCreate();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
        startMyOwnForeground();
    else
        startForeground(1, new Notification());
}

private void startMyOwnForeground(){

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){

        String NOTIFICATION_CHANNEL_ID = "com.example.simpleapp";
        String channelName = "My Background Service";
        NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
        chan.setLightColor(Color.BLUE);
        chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
        NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        assert manager != null;
        manager.createNotificationChannel(chan);

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
        Notification notification = notificationBuilder.setOngoing(true)
                .setSmallIcon(AppSpecific.SMALL_ICON)
                .setContentTitle("App is running in background")
                .setPriority(NotificationManager.IMPORTANCE_MIN)
                .setCategory(Notification.CATEGORY_SERVICE)
                .build();
        startForeground(2, notification);
    }
}

2019-01-02 20:14:35

Android 8.1升级后start前台失败

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