Unity UGUI教程之实现滑页效果

SliderControl：
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class SliderControl : MonoBehaviour
{
public Scrollbar m_Scrollbar;
public ScrollRect m_ScrollRect;
private float mTargetValue;
private bool mNeedMove = false;
private const float MOVE_SPEED = 1F;
private const float SMOOTH_TIME = 0.2F;
private float mMoveSpeed = 0f;
public void OnPointerDown()
{
mNeedMove = false;
}
public void OnPointerUp()
{
// 判断当前位于哪个区间，设置自动滑动至的位置
if (m_Scrollbar.value <= 0.125f)
{
mTargetValue = 0;
}
else if (m_Scrollbar.value <= 0.375f)
{
mTargetValue = 0.25f;
}
else if (m_Scrollbar.value <= 0.625f)
{
mTargetValue = 0.5f;
}
else if (m_Scrollbar.value <= 0.875f)
{
mTargetValue = 0.75f;
}
else
{
mTargetValue = 1f;
}
mNeedMove = true;
mMoveSpeed = 0;
}
public void OnButtonClick(int value)
{
switch (value)
{
case 1:
mTargetValue = 0;
break;
case 2:
mTargetValue = 0.25f;
break;
case 3:
mTargetValue = 0.5f;
break;
case 4:
mTargetValue = 0.75f;
break;
case 5:
mTargetValue = 1f;
break;
default:
Debug.LogError("!!!!!");
break;
}
mNeedMove = true;
}
void Update()
{
if (mNeedMove)
{
if (Mathf.Abs(m_Scrollbar.value - mTargetValue) < 0.01f)
{
m_Scrollbar.value = mTargetValue;
mNeedMove = false;
return;
}
m_Scrollbar.value = Mathf.SmoothDamp(m_Scrollbar.value, mTargetValue, ref mMoveSpeed, SMOOTH_TIME);
}
}
}