oppo android 7.0 不动服务

我写了一个服务用另外一个activity 跨进程启动
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d("服务运行", "onStartCommand: 开始");
        Notification.Builder notification;
        Intent mintent = new Intent(this.getApplicationContext(),outkeeplive.class);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel=new NotificationChannel("com.zxb.service.channel","com.zxb.service.channel",NotificationManager.IMPORTANCE_LOW);
            NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            nm.createNotificationChannel(channel);            notification = new Notification.Builder(this, "com.zxb.service.channel");
        } else {
            notification = new Notification.Builder(this);
        }
        notification.setContentTitle("我的服务");
        notification.setContentText("服务启动");
        notification.setSmallIcon(R.drawable.xiangcheng);        notification.setContentIntent(PendingIntent.getActivity(this.getApplicationContext(), 0, mintent, 0));
        notification.setOngoing(true);
        startForeground(serviceId, notification.build());
        Log.d("服务运行", "onStartCommand: 结束");
        return START_REDELIVER_INTENT;
    }
服务的androidmanifest.xml<service
            android:name=".myservice"
            android:enabled="true"
            android:exported="true"></service>在 activity 中的调用
Intent intent = new Intent();
            intent.setComponent(new ComponentName("com.zxb.service", "com.zxb.service.myservice"));
            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
            Log.d("开始服务", "onResume: com.zxb.service");            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                Log.d("开始服务", "onResume: 前台服务");
                startForegroundService(intent);
            } else {
                Log.d("开始服务", "onResume: 后台服务");
                startService(intent);
            }
在android 6.0上运行正常，而在 oppo android 7.0 上不能启动