在unity中 利用SuperScrollView插件怎么实现一个首字母检索器?针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
ListText.cs // 核心控制类 代码写的比较随意 大概的功能已经实现,需要根据实际需要进行优化。
using SuperScrollView;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class ListText : MonoBehaviour
{
public LoopListView2 mLoopListView;
public Text Select_Text;
public RectTransform Right_Content;
public GameObject Tag_Prefab;
public string[] Tags = new string[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "#" };
public int TreeViewItemCount
{
get
{
return mItemDataList.Count;
}
}
// Start is called before the first frame update
void Start()
{
Init();
Keys.Clear();
for (int i = 0; i < Tags.Length; ++i)
{
CityData cityData = new CityData();
cityData.Key = Tags[i];
List<string> value = new List<string>();
value.Add("Item" + Tags[i] + Random.Range(0, 6).ToString());
cityData.Value = value;
Keys.Add(cityData);
}
DoRefreshDataSource();
int count = TreeViewItemCount;
//tells mTreeItemCountMgr there are how many TreeItems and every TreeItem has how many ChildItems.
for (int i = 0; i < count; ++i)
{
int childCount = GetItemDataByIndex(i).ChildCount;
//second param "true" tells mTreeItemCountMgr this TreeItem is in expand status, that is to say all its children are showing.
AddTreeItem(childCount, true);
}
mLoopListView.InitListView(GetTotalItemAndChildCount(), OnGetItemByIndex);
}
public void AddTreeItem(int count, bool isExpand)
{
KeyData data = new KeyData();
data.mTreeItemIndex = mTreeItemDataList.Count;
data.mChildCount = count;
data.mIsExpand = isExpand;
mTreeItemDataList.Add(data);
mIsDirty = true;
}
public int GetTotalItemAndChildCount()
{
int count = mTreeItemDataList.Count;
if (count == 0)
{
return 0;
}
UpdateAllTreeItemDataIndex();
return mTreeItemDataList[count - 1].mEndIndex + 1;
}
LoopListViewItem2 OnGetItemByIndex(LoopListView2 listView, int index)
{
if (index < 0)
{
return null;
}
KeyData countData = QueryTreeItemByTotalIndex(index);
if (countData == null)
{
return null;
}
int treeItemIndex = countData.mTreeItemIndex;
ValueData treeViewItemData = GetItemDataByIndex(treeItemIndex);
if (countData.IsChild(index) == false)// if is a TreeItem
{
//get a new TreeItem
LoopListViewItem2 item = listView.NewListViewItem("KeyItem");
KeyItem itemScript = item.GetComponent<KeyItem>();
if (item.IsInitHandlerCalled == false)
{
item.IsInitHandlerCalled = true;
itemScript.Init();
//itemScript.SetClickCallBack(this.OnExpandClicked);
}
//update the TreeItem's content
itemScript.mText.text = treeViewItemData.mName;
itemScript.SetItemData(treeItemIndex, countData.mIsExpand);
return item;
}
else // if is a TreeChildItem
{
//childIndex is from 0 to ChildCount.
//for example, TreeChildItem0_0 is the 0'th child of TreeItem0
//and TreeChildItem1_2 is the 2'th child of TreeItem1
int childIndex = countData.GetChildIndex(index);
ItemData itemData = treeViewItemData.GetChild(childIndex);
if (itemData == null)
{
return null;
}
//get a new TreeChildItem
LoopListViewItem2 item = listView.NewListViewItem("ValueItem");
ValueItem itemScript = item.GetComponent<ValueItem>();
if (item.IsInitHandlerCalled == false)
{
item.IsInitHandlerCalled = true;
itemScript.Init();
}
//update the TreeChildItem's content
itemScript.SetItemData(itemData, treeItemIndex, childIndex);
return item;
}
}
List<ValueData> mItemDataList = new List<ValueData>();
int mTreeViewItemCount = 20;
int mTreeViewChildItemCount = 30;
// List<string, List<string>> keys = new List<string, List<string>>();
ArrayList Keys = new ArrayList();
void DoRefreshDataSource()
{
mItemDataList.Clear();
for (int i = 0; i < Keys.Count; i++)
{
ValueData tData = new ValueData();
CityData city = Keys[i] as CityData;
tData.mName = "" + city.Key;
mItemDataList.Add(tData);
// int childCount = Random.Range(0, 6);
for (int j = 0; j < city.Value.Count; j++)
{
ItemData childItemData = new ItemData();
childItemData.mName = "Item" + city.Value[j] + ":Child" + j;
childItemData.mDesc = "Item Desc For " + childItemData.mName;
childItemData.mStarCount = Random.Range(0, 6);
childItemData.mFileSize = Random.Range(20, 999);
tData.AddChild(childItemData);
}
}
//for (int i = 0; i < keys.Count; ++i)
//{
// ValueData tData = new ValueData();
// tData.mName = "" + keys[]
// mItemDataList.Add(tData);
// int childCount = Random.Range(0, 6);
//}
}
public void AddItem()
{
// string key = Tags[Random.Range(0, Tags.Length)];
// int itemIndex = Random.Range(0, Tags.Length);
int itemIndex = 0;
CityData cityData = Keys[itemIndex] as CityData;
cityData.Value.Add(cityData.Key + "测试");
Keys[itemIndex] = cityData;
// int itemIndex = 0;
int childIndex = 0;
if (childIndex < 0)
{
childIndex = 0;
}
KeyData itemCountData = GetTreeItem(itemIndex);
if (itemCountData == null)
{
return;
}
AddNewItemChildForTest(itemIndex, childIndex);
int childCount = itemCountData.mChildCount;
SetItemChildCount(itemIndex, childCount + 1);
DoRefreshDataSource();
mLoopListView.SetListItemCount(GetTotalItemAndChildCount(), false);
mLoopListView.RefreshAllShownItem();
}
public void SetItemChildCount(int treeIndex, int count)
{
if (treeIndex < 0 || treeIndex >= mTreeItemDataList.Count)
{
return;
}
mIsDirty = true;
KeyData data = mTreeItemDataList[treeIndex];
data.mChildCount = count;
}
public void AddNewItemChildForTest(int itemIndex, int AddToBeforeChildIndex)
{
if (itemIndex < 0 || itemIndex >= mItemDataList.Count)
{
return;
}
ValueData tData = mItemDataList[itemIndex];
List<ItemData> childItemDataList = tData.mChildItemDataList;
ItemData childItemData = new ItemData();
childItemData.mName = "Item" + itemIndex + ":" + AddToBeforeChildIndex;
childItemData.mDesc = "Item Desc For " + childItemData.mName;
childItemData.mStarCount = Random.Range(0, 6);
childItemData.mFileSize = Random.Range(20, 999);
if (AddToBeforeChildIndex < 0)
{
childItemDataList.Insert(0, childItemData);
}
else if (AddToBeforeChildIndex >= childItemDataList.Count)
{
childItemDataList.Add(childItemData);
}
else
{
childItemDataList.Insert(AddToBeforeChildIndex, childItemData);
}
}
public ValueData GetItemDataByIndex(int index)
{
if (index < 0 || index >= mItemDataList.Count)
{
return null;
}
return mItemDataList[index];
}
List<KeyData> mTreeItemDataList = new List<KeyData>();
KeyData mLastQueryResult = null;
bool mIsDirty = true;
public KeyData QueryTreeItemByTotalIndex(int totalIndex)
{
if (totalIndex < 0)
{
return null;
}
int count = mTreeItemDataList.Count;
if (count == 0)
{
return null;
}
UpdateAllTreeItemDataIndex();
if (mLastQueryResult != null)
{
if (mLastQueryResult.mBeginIndex <= totalIndex && mLastQueryResult.mEndIndex >= totalIndex)
{
return mLastQueryResult;
}
}
int low = 0;
int high = count - 1;
KeyData data = null;
while (low <= high)
{
int mid = (low + high) / 2;
data = mTreeItemDataList[mid];
if (data.mBeginIndex <= totalIndex && data.mEndIndex >= totalIndex)
{
mLastQueryResult = data;
return data;
}
else if (totalIndex > data.mEndIndex)
{
low = mid + 1;
}
else
{
high = mid - 1;
}
}
return null;
}
void UpdateAllTreeItemDataIndex()
{
if (mIsDirty == false)
{
return;
}
mLastQueryResult = null;
mIsDirty = false;
int count = mTreeItemDataList.Count;
if (count == 0)
{
return;
}
KeyData data0 = mTreeItemDataList[0];
data0.mBeginIndex = 0;
data0.mEndIndex = (data0.mIsExpand ? data0.mChildCount : 0);
int curEnd = data0.mEndIndex;
for (int i = 1; i < count; ++i)
{
KeyData data = mTreeItemDataList[i];
data.mBeginIndex = curEnd + 1;
data.mEndIndex = data.mBeginIndex + (data.mIsExpand ? data.mChildCount : 0);
curEnd = data.mEndIndex;
}
}
public KeyData GetTreeItem(int treeIndex)
{
if (treeIndex < 0 || treeIndex >= mTreeItemDataList.Count)
{
return null;
}
return mTreeItemDataList[treeIndex];
}
public void OnJumpBtnClicked(int itemIndex)
{
// int itemIndex = 0;
int childIndex = 0;
int finalIndex = 0;
if (childIndex < 0)
{
childIndex = 0;
}
KeyData itemCountData = GetTreeItem(itemIndex);
if (itemCountData == null)
{
return;
}
int childCount = itemCountData.mChildCount;
if (itemCountData.mIsExpand == false || childCount == 0 || childIndex == 0)
{
finalIndex = itemCountData.mBeginIndex;
}
else
{
if (childIndex > childCount)
{
childIndex = childCount;
}
if (childIndex < 1)
{
childIndex = 1;
}
finalIndex = itemCountData.mBeginIndex + childIndex;
}
mLoopListView.MovePanelToItemIndex(finalIndex, 0);
}
public void Init()
{
int Index = 0;
foreach (string Value in Tags)
{
GameObject go = Instantiate(Tag_Prefab, Right_Content);
go.name = "Tag-" + Value;
Tag_Item tag_Item = go.GetComponent<Tag_Item>();
tag_Item.Select_Text = Select_Text;
tag_Item.Init(Value);
tag_Item.Index = Index;
tag_Item.KeyStr = Value;
tag_Item.listText = this;
Index += 1;
}
}
}
public class CityData
{
public string Key;
public List<string> Value;
}
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