2017-02-15 676 views
2

我想從我的streamingAssets中恢復文件並在persistentDataPath中創建它的副本。Unity - IOS persistentDataPath訪問被拒絕//無法打開數據庫

的問題是,獲得persistentDataPath由iOS的拒絕,所以我不能寫文件,有人可以告訴我爲什麼?

代碼:

#elif UNITY_IOS 
if (File.Exists(Application.dataPath + "/Raw/" + StaticDatas.databaseName)) 
{ 
    byte[] bytes = null; 
     if (File.Exists(Application.dataPath + "/Raw/" + StaticDatas.databaseName)) 
     { 
     Debug.Log(Application.dataPath + "/Raw/" + StaticDatas.databaseName); 
     Debug.Log(StaticDatas.databasePath + StaticDatas.databaseName); 
      using (FileStream fileStream = File.OpenRead(Application.dataPath + "/Raw/" + StaticDatas.databaseName)) 
      { 
       bytes = new byte[fileStream.Length]; 
       fileStream.Read(bytes,0,int.Parse(fileStream.Length+"")); 
       fileStream.Close(); 
       fileStream.Dispose(); 
      } 
      FileStream fs = File.Create(StaticDatas.databasePath + StaticDatas.databaseName); 
      fs.Write(bytes, 0, bytes.Length); 
     } 
     _connection = new SQLiteConnection(filePath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create); 
     CreateDB(); 
} 

錯誤: 訪問路徑/var/mobile/containers/dta/application/manythings/DocumentsDatabaseName.db「被拒絕

IOS:9.5.3 團結:5.5.0f3

----------------------------------------- -----------------------

UPDATE:StaticDatas.databasePath = persistentDataPath

------------------------------------ ----------------------------

更新2:

嗯,我完全失去了...

這裏是我的代碼:

#elif UNITY_IOS 

string basePath = Path.Combine(Application.dataPath + "Raw" , StaticDatas.databaseName); 
string targetPath = Path.Combine(StaticDatas.databasePath , StaticDatas.databaseName); 
Debug.Log(basePath); 
Debug.Log(targetPath); 
if (File.Exists(basePath)) 
{ 
    byte[] bytes = null; 

     Debug.Log("base path exists"); 
      using (FileStream fileStream = File.OpenRead(basePath)) 
      { 
       Debug.Log("create byte array"); 
       bytes = new byte[fileStream.Length]; 
       Debug.Log(" READ BYTES"); 
       fileStream.Read(bytes,0,int.Parse(fileStream.Length+"")); 
       Debug.Log(" CLOSE"); 
       fileStream.Close(); 
       Debug.Log("DISPOSE"); 
       fileStream.Dispose(); 
      } 
      Debug.Log(" Check if dir exists"); 
      /* if (!Directory.Exists(StaticDatas.databasePath + "/AnnotationTest.app/database/")) 
      { 
       Debug.Log(" create folder"); 
       Directory.CreateDirectory(StaticDatas.databasePath + "/AnnotationTest.app/database/"); 
      }*/ 
      Debug.Log("Open file"); 
      FileStream fs = File.Open(targetPath, FileMode.OpenOrCreate); 
     Debug.Log("Write file"); 
      fs.Write(bytes, 0, bytes.Length); 
      Debug.Log(" CLOSE STRREAM"); 
      fs.Close(); 
     Debug.Log("Connec close"); 
     _connection = new SQLiteConnection(targetPath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create); 
     Debug.Log("sql connect"); 
     CreateDB(); 
     Debug.Log(" db made"); 
} 



if (File.Exists("file:" + Application.dataPath + "/Raw/" + StaticDatas.databaseName)); 
{ 
    Debug.Log("file datapath raw databasename"); 
      byte[] bytes = null; 

     Debug.Log("base path exists"); 
      using (FileStream fileStream = File.OpenRead("file:" + Application.dataPath + "/Raw/" + StaticDatas.databaseName)) 
      { 
       Debug.Log("create byte array"); 
       bytes = new byte[fileStream.Length]; 
       Debug.Log(" READ BYTES"); 
       fileStream.Read(bytes,0,int.Parse(fileStream.Length+"")); 
       Debug.Log(" CLOSE"); 
       fileStream.Close(); 
       Debug.Log("DISPOSE"); 
       fileStream.Dispose(); 
      } 
      FileStream fs = File.Open(targetPath, FileMode.OpenOrCreate); 
     Debug.Log("Write file"); 
      fs.Write(bytes, 0, bytes.Length); 
      Debug.Log(" CLOSE STRREAM"); 
      fs.Close(); 

     _connection = new SQLiteConnection(targetPath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create); 
     CreateDB(); 
} 

#else 
      var loadDb = StaticDatas.databasePath + StaticDatas.databaseName; 
      File.Copy(loadDb, filePath); 
     _connection = new SQLiteConnection(filePath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create); 
     CreateDB(); 
#endif 

第一如果s代理工作了一會兒(沒有combine),但現在,花生。

第二個返回true(Exists),但是當它到達using語句,它說:「找不到路徑的一部分」(即使它發現它的if語句,跆拳道?)

------------------------------------------------ ----------------

更新3

這是一個奇蹟!我找到了! 現在,SQLite無法打開數據庫,但我發現它!

string bpa = Application.dataPath + "/Raw/" + StaticDatas.databaseName; 

if (File.Exists(bpa)) 
{ 
    byte[] b = null; 
    using (FileStream fs = File.OpenRead(bpa)) 
    { 
     b = new byte[fs.Length]; 
     fs.Read(b, 0, int.Parse(fs.Length+"")); 
     fs.Close(); 
     fs.Dispose(); 
    } 
    FileStream fsa = File.Open(targetPath, FileMode.OpenOrCreate); 
    fsa.Write(b,0, b.Length); 
    fsa.Close(); 
    _connection = new SQLiteConnection(targetPath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create); 
     CreateDB(); 
} 
else if (File.Exists(basePath)) 
{ 

byte[] b = null; 
    using (FileStream fs = File.OpenRead(basePath)) 
    { 
     b = new byte[fs.Length]; 
     fs.Read(b, 0, int.Parse(fs.Length+"")); 
     fs.Close(); 
     fs.Dispose(); 
    } 
    FileStream fsa = File.Open(targetPath, FileMode.OpenOrCreate); 
    fsa.Write(b,0, b.Length); 
    fsa.Close(); 
    _connection = new SQLiteConnection(targetPath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create); 
     CreateDB(); 
} 

因此正確pathseems是:

string bpa = Application.dataPath + "/Raw/" + StaticDatas.databaseName; 

---------------------------- ------------------------------------

UPDATE 4:

好的,我想我知道問題是什麼(即使我不明白它):

我現在可以從流的資產得到我的DATAS並將其複製到persistentDatapath,但是當我創建一個文件的連接時,SQLite拋出一個異常:

Could not open database file 

是否有人知道爲什麼嗎?

--------------------------------------------- ------------------- 更新5:

我做一個組合創建路徑「targetPath」,在日誌中,它顯示「/ var /移動/容器/數據/應用/ manylettersanddigits /文檔/ database.db」

然而,在把SQLException,它示出了相同但沒有和文檔之間的斜線database.db

+0

[this]的副本(http://stackoverflow.com/questions/41433761/file-create-fails-on-iphone-5s)? – Programmer

+0

將看看它,謝謝 – Andromelus

+0

我很困惑...你爲什麼要問'Application.persistantDataPath',但在你的代碼中,你正在使用'Application.dataPath?'我很確定http:// answers.unity3d.com/questions/209108/when-to-use-persistentdatapath-versus-datapath.html回答你的問題。 – Zze

回答

0

在IOS,corrent路徑流媒體資源可通過以下網址進行訪問:

Application.dataPath + "/Raw/" + StaticDatas.databaseName; 

在這種情況下,「無法打開數據庫文件」是因爲我創造的方法2連接(在我身上的恥辱) 的確引起的,第二個是使它buggig(兩個相同的變量),是我的錯誤。

感謝所有。

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