上圖釋:通過代碼生成按鈕,一頁6個按鈕,左右切換翻頁。
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class TestScroolView : MonoBehaviour {
public GameObject objBtn;
private RectTransform contents;
private ScrollRect scrollrect;
private float targePoint;
private int count = 12;//按鈕總個數
private float delta_X ;
private bool isRoll; //是否翻頁
// Use this for initialization
void Start () {
contents = transform.Find("Viewport/Content") as RectTransform;
scrollrect = transform.GetComponent<ScrollRect>();
//通過計算獲得contents的長度(400爲一頁的長度)
delta_X = Mathf.CeilToInt(count / 6) * 400f;
//給contents設定大小
contents.sizeDelta = new Vector2(delta_X, contents.sizeDelta.y);
//給contents添加按鈕
for (int i = 0; i < count; i++)
{
GameObject obj = Instantiate(objBtn, contents);
obj.transform.GetChild(0).GetComponent<Text>().text = i.ToString();
}
}
private void OnGUI()
{
//左按鈕
if (GUI.Button(new Rect(200, 80, 100, 30), "上一頁"))
{
isRoll = true;
targePoint -= 1 / (delta_X / 400f - 1);
if (targePoint < 0)
targePoint = 0;
}
//右按鈕
if (GUI.Button(new Rect(420, 80, 100, 30), "下一頁"))
{
isRoll = true;
targePoint += 1 / (delta_X / 400f - 1);
if (targePoint > 1)
targePoint = 1;
}
//翻頁
if (isRoll)
{
if (Mathf.Abs(scrollrect.horizontalNormalizedPosition - targePoint) < 0.01f)
{
scrollrect.horizontalNormalizedPosition = targePoint;
isRoll = false;
return;
}
//設置水平滾動位置
scrollrect.horizontalNormalizedPosition = Mathf.Lerp(scrollrect.horizontalNormalizedPosition, targePoint, Time.timeScale * 0.1f);
}
}
}