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2024-09-29 05:00:03

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

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

其他回答

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

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

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

在对不同的解决方案进行了一段时间的修补后，我发现必须在Android 8.1及以上版本中创建通知通道。

private fun startForeground() {
    val channelId =
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                createNotificationChannel("my_service", "My Background Service")
            } else {
                // If earlier version channel ID is not used
                // https://developer.android.com/reference/android/support/v4/app/NotificationCompat.Builder.html#NotificationCompat.Builder(android.content.Context)
                ""
            }

    val notificationBuilder = NotificationCompat.Builder(this, channelId )
    val notification = notificationBuilder.setOngoing(true)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setPriority(PRIORITY_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .build()
    startForeground(101, notification)
}

@RequiresApi(Build.VERSION_CODES.O)
private fun createNotificationChannel(channelId: String, channelName: String): String{
    val chan = NotificationChannel(channelId,
            channelName, NotificationManager.IMPORTANCE_NONE)
    chan.lightColor = Color.BLUE
    chan.lockscreenVisibility = Notification.VISIBILITY_PRIVATE
    val service = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
    service.createNotificationChannel(chan)
    return channelId
}

根据我的理解，后台服务现在显示为普通的通知，用户可以通过取消选择通知通道来选择不显示。

更新: 另外，不要忘记在Android P中添加前台权限:

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
2017-11-28 13:57:32

Java解决方案(Android 9.0, API 28)

在你的Service类中，添加这个:

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

private void startMyOwnForeground(){
    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(R.drawable.icon_1)
            .setContentTitle("App is running in background")
            .setPriority(NotificationManager.IMPORTANCE_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .build();
    startForeground(2, notification);
}

更新:android 9.0馅饼(api 28)

将此权限添加到您的AndroidManifest.xml文件中:

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
2018-07-11 08:59:00

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