C# touch.fingerid触摸不工作

下面是我的鼠标外观脚本，它控制触摸和移动，现在我正在实现多重触摸，因为，我使用了手指ID，但在实现之后，我的触摸不起作用，不知道为什么。按默认值，滑块\u finger\u id=-1

 if (Application.platform == RuntimePlatform.Android || Application.platform == RuntimePlatform.IPhonePlayer) 
    {
        if( Input.touchCount>0 )
        {
            foreach (Touch touch in Input.touches)
            {
                if (touch_moving_tex.HitTest (touch.position))
                    {
                    if(touch.phase == TouchPhase.Began &&  touch.phase == TouchPhase.Moved && slider_finger_id ==-1) 
                        {
                        if (axes == RotationAxes.MouseXAndY) 
                        {
                            sensitivityX = main_fov; 
                            noisedeltaX += ((((Mathf.Cos (Time.time) * Random.Range (-10, 10) / 5f) * noiseX) - noisedeltaX) / 100) * Time.timeScale;
                            rotationXtemp += (touch.deltaPosition.x * sensitivityX * sensitivity) + (noisedeltaX);

                            //rotationXtemp += (Input.GetTouch (0).deltaPosition.x * sensitivityX * sensitivity) + (noisedeltaX);

                            rotationX += ((rotationXtemp - rotationX) / 3) * Time.timeScale;
                            rotationX = Mathf.Clamp (rotationX, minimumX, maximumX);

                            sensitivityY = main_fov;
                            noisedeltaY += ((((Mathf.Sin (Time.time) * Random.Range (-10, 10) / 5f) * noiseY) - noisedeltaY) / 100) * Time.timeScale;

                            rotationYtemp += (touch.deltaPosition.y * sensitivityY * sensitivity) + (noisedeltaY);
                            rotationY += ((rotationYtemp - rotationY) / 3) * Time.timeScale;

                            rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
                            transform.rotation = Quaternion.Lerp (transform.rotation, Quaternion.Euler (new Vector3 (-rotationY, rotationX, 0)), 9f * Time.deltaTime);

                        }
                    }
                    slider_finger_id = touch.fingerId;
                    }
                if (touch.phase == TouchPhase.Ended) 
                {
                    if (touch.fingerId == slider_finger_id) 
                    {
                        slider_finger_id = -1;
                    }
                }
            }
        }

---

事实上，我没有得到touch.fingerId，也没有存储，也没有检查特定的touch.fingerId，所以我通过这样做找到了答案。下面是脚本和执行良好。（我在下面的代码中所做的主要工作是，touch仅适用于第一次触摸，通过保存touch.fingerId按fingerId执行） 首先，我刚刚检查了触摸计数是否大于零，然后获取了触摸数组并执行foreach循环，然后检查了触摸是否在我想要的位置，然后获取了第一个触摸fingerId，并将其保存在slider\u finger\u id中，然后使用它

if (Application.platform == RuntimePlatform.Android || Application.platform == RuntimePlatform.IPhonePlayer) 
{
    if( Input.touchCount>0 )
    {
        foreach (Touch touch in Input.touches)
        {
            if (touch_moving_tex.HitTest (touch.position))
                {
                if(touch.phase == TouchPhase.Began && slider_finger_id == -1) 
                    {
                     slider_finger_id = touch.fingerId;
                    }

                    if(touch.phase == TouchPhase.Moved)
                     {
                    if (axes == RotationAxes.MouseXAndY) 
                    {
                        sensitivityX = main_fov; 
                        noisedeltaX += ((((Mathf.Cos (Time.time) * Random.Range (-10, 10) / 5f) * noiseX) - noisedeltaX) / 100) * Time.timeScale;
                        rotationXtemp += (touch.deltaPosition.x * sensitivityX * sensitivity) + (noisedeltaX);

                        //rotationXtemp += (Input.GetTouch (0).deltaPosition.x * sensitivityX * sensitivity) + (noisedeltaX);

                        rotationX += ((rotationXtemp - rotationX) / 3) * Time.timeScale;
                        rotationX = Mathf.Clamp (rotationX, minimumX, maximumX);

                        sensitivityY = main_fov;
                        noisedeltaY += ((((Mathf.Sin (Time.time) * Random.Range (-10, 10) / 5f) * noiseY) - noisedeltaY) / 100) * Time.timeScale;

                        rotationYtemp += (touch.deltaPosition.y * sensitivityY * sensitivity) + (noisedeltaY);
                        rotationY += ((rotationYtemp - rotationY) / 3) * Time.timeScale;

                        rotationY = Mathf.Clamp (rotationY, minimumY, maximumY);
                        transform.rotation = Quaternion.Lerp (transform.rotation, Quaternion.Euler (new Vector3 (-rotationY, rotationX, 0)), 9f * Time.deltaTime);

                    }
                  }
                }
                slider_finger_id = touch.fingerId;
                }
            if (touch.phase == TouchPhase.Ended && slider_finger_id == touch.fingerId) 
            {
                    slider_finger_id = -1;
            }
        }
    }

---

我注意到一件事，如果我不使用slider\u finger\u id，那么它就可以工作。。但是我检查了很多次，它是-1，没有任何变化，并且

滑块\u finger\u id

设置在哪里？在第一次迭代中，值是多少？我不确定

-1

是否有效。