前台服务无法点击跳转Activity的问题

1.PendingIntent pendingIntent=PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);第4个参数必须为PendingIntent.FLAG_UPDATE_CURRENT，否则点击跳转一次后，第二次就无效了
2.mBuilder的setContentText，setContentText至少设置一个,不然点击无效。

3. 增加前台服务权限<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>

public static final int NOTIFICATION_ID=1111;
public static final String CHANNEL_ID = "xxxChannelId";
public static final String CHANNEL_NAME = "xxx";

@Override
    public void onCreate() {
        super.onCreate();
        Intent intent=new Intent(this, GoToActivity.class);
        PendingIntent pendingIntent=PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_UPDATE_CURRENT);//1

        registerNotificationChannel();
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this, CHANNEL_ID);
        mBuilder.setSmallIcon(R.mipmap.logo)//必须要有
        .setContentIntent(pendingIntent)
        .setContentText("点击回到主界面")
        .setContentTitle(getResources().getString(R.string.app_name))
        //可选
        //.setSound(null)
        //.setVibrate(null)
        //...
        ;

        startForeground(NOTIFICATION_ID, mBuilder.build());
    }

/**
     * 注册通知通道
     */
    private void registerNotificationChannel() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            NotificationChannel notificationChannel = mNotificationManager.getNotificationChannel(CHANNEL_ID);
            if (notificationChannel == null) {
                NotificationChannel channel = new NotificationChannel(CHANNEL_ID,
                        CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
                //是否在桌面icon右上角展示小红点
                channel.enableLights(false);
                //小红点颜色
                //channel.setLightColor(Color.RED);
                //通知显示
                //channel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
                //是否在久按桌面图标时显示此渠道的通知
                //channel.setShowBadge(true);
                mNotificationManager.createNotificationChannel(channel);
            }
        }
    }