/**
* @des:添加当前数据索引数据
*/
public void AddItem(int dataIndex)
{
if (dataIndex < 0 || dataIndex > _dataCount)
{
return;
}
if (listItem.Count == 0)
{
createItem(0);
setDataCount(_dataCount + 1);
setUpdateRectItem(getCurScrollPerLineIndex());
return;
}
//检测是否需添加gameObject
bool isNeedAdd = false;
for (int i = listItem.Count - 1; i >= 0; i--)
{
YYUIWarpContentItem item = listItem [i];
if (item.Index >= (_dataCount - 1))
{
isNeedAdd = true;
break;
}
}
setDataCount(_dataCount + 1);
if (isNeedAdd)
{
for (int i = 0; i < listItem.Count; i++)
{
YYUIWarpContentItem item = listItem [i];
int oldIndex = item.Index;
if (oldIndex >= dataIndex)
{
item.Index = oldIndex + 1;
}
item = null;
}
setUpdateRectItem(getCurScrollPerLineIndex());
}
else
{
//重新刷新数据
for (int i = 0; i < listItem.Count; i++)
{
YYUIWarpContentItem item = listItem [i];
int oldIndex = item.Index;
if (oldIndex >= dataIndex)
{
item.Index = oldIndex;
}
item = null;
}
}
}
public void Init(int dataCount, OnInitializeItem initfun, Action <int> OnReachBottom = null, bool initContentPos = true)
{
is_init = true;
onInitializeItem = initfun;
mOnReachBottom = OnReachBottom;
if (scrollRect == null || content == null || goItemPrefab == null)
{
Debug.LogError("异常:请检测<" + gameObject.name + ">对象上UIWarpContent对应ScrollRect、Content、GoItemPrefab 是否存在值...." + scrollRect + " _" + content + "_" + goItemPrefab);
return;
}
// if (dataCount <= 0)
//{
// return;
//}
//是否重置content的位置
if (initContentPos)
{
InitContent();
}
setDataCount(dataCount);
scrollRect.onValueChanged.RemoveAllListeners();
scrollRect.onValueChanged.AddListener(onValueChanged);
if (listItem == null)
{
listItem = new List <YYUIWarpContentItem>();
}
if (unUseItem == null)
{
unUseItem = new Queue <YYUIWarpContentItem>();
}
unUseItem.Clear();
if (content.childCount > 0)
{
for (int i = 0; i < content.childCount; i++)
{
YYUIWarpContentItem item = content.GetChild(i).GetComponent <YYUIWarpContentItem>();
unUseItem.Enqueue(item);
item.Index = -10;
}
}
listItem.Clear();
//
setUpdateRectItem(getCurScrollPerLineIndex());
}
/**
* @des:删除当前数据索引下数据
*/
public void DelItem(int dataIndex)
{
if (dataIndex < 0 || dataIndex >= _dataCount)
{
return;
}
//删除item逻辑三种情况
//1.只更新数据，不销毁gameObject,也不移除gameobject
//2.更新数据，且移除gameObject,不销毁gameObject
//3.更新数据，销毁gameObject
bool isNeedDestroyGameObject = (listItem.Count >= _dataCount);
setDataCount(_dataCount - 1);
for (int i = listItem.Count - 1; i >= 0; i--)
{
YYUIWarpContentItem item = listItem [i];
int oldIndex = item.Index;
if (oldIndex == dataIndex)
{
listItem.Remove(item);
if (isNeedDestroyGameObject)
{
GameObject.Destroy(item.gameObject);
}
else
{
item.Index = -10; //-1 改到 -10 避免下拉的时候被看到
unUseItem.Enqueue(item);
}
}
if (oldIndex > dataIndex)
{
item.Index = oldIndex - 1;
}
}
setUpdateRectItem(getCurScrollPerLineIndex());
}
/**
* @des:设置更新区域内item
* 功能:
* 1.隐藏区域之外对象
* 2.更新区域内数据
*/
public void setUpdateRectItem(int scrollPerLineIndex)
{
if (scrollPerLineIndex < 0)
{
return;
}
curScrollPerLineIndex = scrollPerLineIndex;
int startDataIndex = curScrollPerLineIndex * maxPerLine;
int endDataIndex = (curScrollPerLineIndex + viewCount) * maxPerLine;
//移除
for (int i = listItem.Count - 1; i >= 0; i--)
{
YYUIWarpContentItem item = listItem[i];
int index = item.Index;
if (index < startDataIndex || index >= endDataIndex)
{
item.Index = -10; //-1 改到 -10 避免下拉的时候被看到
listItem.Remove(item);
unUseItem.Enqueue(item);
}
}
//显示
for (int dataIndex = startDataIndex; dataIndex < endDataIndex; dataIndex++)
{
if (dataIndex >= _dataCount)
{
continue;
}
if (isExistDataByDataIndex(dataIndex))
{
continue;
}
createItem(dataIndex);
}
}
