嘗試根據(jù)擴(kuò)展名 *.json 列出一些文件。在父母下實(shí)例化預(yù)制件，但它不會(huì)按順序出現(xiàn)。有沒有辦法刷新列表或按升序排列它們。目的是加載和刪除文件。如何排列文件 1,2， 3,4,5...如果有 10 個(gè)文件，最后保存的文件應(yīng)該在父文件下的第 10 位？Dictionary<int, Button> BtnList = new Dictionary<int, Button>();public static FileInfo[] info;GameObject lisobj;public void ListMap(){ panellist.SetActive(true); string mainpath = Application.persistentDataPath; DirectoryInfo dir = new DirectoryInfo(mainpath); info = dir.GetFiles("*.json"); for(int i = 1;i<=info.Length;i++) { lisobj = Instantiate(prefabpanellist); lisobj.transform.SetParent(Parentcontent); number.text = i.ToString(); mapnamedb.text =info[i-1].Name; var button = lisobj.GetComponentInChildren<Button>(); BtnList.Add(i,button); } lisobj.transform.SetParent(Parentcontent); Dictionary<int, Button>.ValueCollection values = BtnList.Values; foreach (Button btn in values) { btn.onClick.AddListener(() => Deleteinformation()); }}public void Deleteinformation(){ var b= UnityEngine.EventSystems.EventSystem.current.currentSelectedGameObject.GetComponent<Button>(); var mykey=BtnList.FirstOrDefault(x=>x.Value==b).Key; Debug.Log("Items are" + mykey); string mainpath = Application.persistentDataPath; Debug.Log("Name is " + info[mykey - 1].Name); //File.Delete(mainpath + info[mykey-1].);}最初，當(dāng)我將文件保存到 .json 并單擊 Listmap 按鈕（顯示文件列表 - 如屏幕截圖所示）時(shí)。它兩次顯示索引號(hào) 5。我保存的最后一個(gè)文件也被命名為“00000.json”，但它成為第一個(gè)文件。那是在我保存它之后（文件列表）沒有得到更新，當(dāng)我單擊 Listmap 時(shí)，文件多次顯示相同的索引號(hào)。似乎它沒有刷新不確定。另一個(gè)問題是最后保存的文件位于頂部。
1 回答
胡子哥哥
TA貢獻(xiàn)1825條經(jīng)驗(yàn) 獲得超6個(gè)贊
我已經(jīng)把它們放在一起了，現(xiàn)在這對(duì)我來說非常有用：
注意：我注釋掉了與示例無關(guān)的所有內(nèi)容（或者您沒有添加到問題代碼中的內(nèi)容）
public class FilesExample : MonoBehaviour
{
// Start is called before the first frame update
private void Start()
{
ListMap();
}
public static FileSystemInfo[] info;
public void ListMap()
{
/*
* If you already called this before you already have child objects
* So I would destroy the old ones before instantiating new ones
*/
//foreach(Transform child in Parentcontent)
foreach(Transform child in transform)
{
Destroy(child.gameObject);
}
//panellist.SetActive(true);
/*
* preferred to use streamingAssetsPath for testing
*/
//var mainpath = Application.persistentDataPath;
var mainpath = Application.streamingAssetsPath;
var dir = new DirectoryInfo(mainpath);
info = dir.GetFileSystemInfos("*.json").OrderBy(i => i.CreationTime).ToArray();
for (var i = 1; i <= info.Length; i++)
{
/*
* Instead of instantiating I simply created new empty objects
* just as example
*/
//var lisobj = Instantiate(prefabpanellist);
var lisobj = new GameObject(i + " " + info[i - 1].Name);
//lisobj.transform.SetParent(Parentcontent);
lisobj.transform.SetParent(transform);
// Though I'm sure this should already have the correct order
// you could still do SetLastSibling to move the
// created/instantiated object to the bottom
lisobj.transform.SetAsLastSibling();
//number.text = i.ToString();
//mapnamedb.text = info[i - 1].Name;
/*
* NOTE: I would simply do the buttons thing in the same
* loop. That saves you a lot of storing and accessing lists
*/
//var index = i;
//var button = lisobj.GetComponentInChildren<Button>(true);
//button.onClick.AddListener(() => Deleteinformation(index));
}
}
public void Deleteinformation(int index)
{
Debug.Log("Index is " + index);
Debug.Log("Path is " + info[index].FullName);
File.Delete( info[index].FullName);
// update the scene list
ListMap();
}
}
結(jié)果
驅(qū)動(dòng)器上的文件按名稱排序
驅(qū)動(dòng)器上的文件按創(chuàng)建日期排序
導(dǎo)致 Unity 按創(chuàng)建日期排序
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