Question

团结一致，我试图轻松上班。这是我的代码：

using UnityEngine;
using System.Collections;

public class swipe : MonoBehaviour 
{
    private Vector3 fp;   //First touch position
    private Vector3 lp;   //Last touch position
    private float dragDistance;  //minimum distance for a swipe to be registered
    private List <Vector3> touchPositions = new List<Vector3>; //store all the touch positions in list

    void Start(){
        dragDistance = Screen.height*20/100; //dragDistance is 20% height of the screen 
    }

    void Update(){
        foreach (Touch touch in Input.touches)  //use loop to detect more than one swipe
        { //can be ommitted if you are using lists 
            if (touch.phase == TouchPhase.Began) //check for the first touch
            {
                fp = touch.position;
                lp = touch.position;
            }

            if (touch.phase == TouchPhase.Moved) //add the touches to list as the swipe is being made
            {
                touchPositions.Add(touch.position);
            }

            if (touch.phase == TouchPhase.Ended) //check if the finger is removed from the screen
            {
                //lp = touch.position;  //last touch position. Ommitted if you use list
                fp =  touchPositions[0]; //get first touch position from the list of touches
                lp =  touchPositions[touchPositions.Count-1]; //last touch position 

                //Check if drag distance is greater than 20% of the screen height
                if (Mathf.Abs(lp.x - fp.x) > dragDistance || Mathf.Abs(lp.y - fp.y) > dragDistance)
                {//It's a drag
                    //check if the drag is vertical or horizontal 
                    if (Mathf.Abs(lp.x - fp.x) > Mathf.Abs(lp.y - fp.y))
                    {   //If the horizontal movement is greater than the vertical movement...
                        if ((lp.x>fp.x))  //If the movement was to the right)
                        {   //Right swipe
                            Debug.Log("Right Swipe");
                        }
                        else
                        {   //Left swipe
                            Debug.Log("Left Swipe"); 
                        }
                    }
                    else
                    {   //the vertical movement is greater than the horizontal movement
                        if (lp.y>fp.y)  //If the movement was up
                        {   //Up swipe
                            Debug.Log("Up Swipe"); 
                        }
                        else
                        {   //Down swipe
                            Debug.Log("Down Swipe");
                        }
                    }
                } 
            }
            else
            {   //It's a tap as the drag distance is less than 20% of the screen height

            }
        }
    }
}

然而，它给出了一个错误：Assets / swipe.cs（9,66）：错误CS1526：一个新的表达式需要在类型之后的（）或[] 有人知道错误吗？

Answer 1

错误出现在以下代码行中：

private List touchPositions = new List; //store all the touch positions in list

List是一种通用类型，根据您的代码段，您需要一个类型为Vector3的列表。声明应该是：

private List<Vector3> touchPositions = new List<Vector3>(); //store all the touch positions in list

注意：更新代码段后，错误的行正确显示<Vector3>，错误是分号前的缺失（）。

在团结中，我试图刷卡工作

1 个答案: