• 近期发现较多应用出现闪退现象，具体trace如下：

AndroidRuntime: FATAL EXCEPTION: main
AndroidRuntime: Process: com.xxx.app, PID: 25339
AndroidRuntime: java.lang.SecurityException: Not allowed to delete channel XXX with a foreground service
AndroidRuntime:         at android.os.Parcel.createExceptionOrNull(Parcel.java:2376)
AndroidRuntime:         at android.os.Parcel.createException(Parcel.java:2360)
AndroidRuntime:         at android.os.Parcel.readException(Parcel.java:2343)
AndroidRuntime:         at android.os.Parcel.readException(Parcel.java:2285)
AndroidRuntime:         at android.app.INotificationManager$Stub$Proxy.deleteNotificationChannel(INotificationManager.java:4040)
AndroidRuntime:         at android.app.NotificationManager.deleteNotificationChannel(NotificationManager.java:909)
AndroidRuntime:         at androidx.core.app.NotificationManagerCompat.deleteNotificationChannel(SourceFile:2)
AndroidRuntime:         at com.gyf.cactus.ext.c$a.run(SourceFile:1)
AndroidRuntime:         at android.os.Handler.handleCallback(Handler.java:938)
AndroidRuntime:         at android.os.Handler.dispatchMessage(Handler.java:99)
AndroidRuntime:         at android.os.Looper.loop(Looper.java:236)
AndroidRuntime:         at android.app.ActivityThread.main(ActivityThread.java:8142)
AndroidRuntime:         at java.lang.reflect.Method.invoke(Native Method)
AndroidRuntime:         at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
AndroidRuntime:         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
AndroidRuntime: Caused by: android.os.RemoteException: Remote stack trace:
AndroidRuntime:         at com.android.server.notification.NotificationManagerService$10.enforceDeletingChannelHasNoFgService(NotificationManagerService.java:3427)
AndroidRuntime:         at com.android.server.notification.NotificationManagerService$10.deleteNotificationChannel(NotificationManagerService.java:3440)
AndroidRuntime:         at android.app.INotificationManager$Stub.onTransact(INotificationManager.java:1737)
AndroidRuntime:         at android.os.Binder.execTransactInternal(Binder.java:1160)
AndroidRuntime:         at android.os.Binder.execTransact(Binder.java:1129)

• 原因是受Google的一笔安全校验Patch影响：

详见：操作引导

private void enforceDeletingChannelHasNoFgService(String pkg, int userId,
                String channelId) {
            if (mAmi.hasForegroundServiceNotification(pkg, userId, channelId)) {
                Slog.w(TAG, "Package u" + userId + "/" + pkg
                        + " may not delete notification channel '"
                        + channelId + "' with fg service");
                throw new SecurityException("Not allowed to delete channel " + channelId
                        + " with a foreground service");
            }
        }

也就是Google限制了存在前台服务时，不允许应用删除与前台服务绑定的channel。

以上，请开发者检查处理，感谢支持！