Question

我被要求修复在Unity中构建的iPhone游戏，导致iOS 8出现问题。游戏在所有以前的iOS版本中都有效，但在iOS 8中，它会加载所有启动画面，然后卡在以下的LoadGameData函数上我在Xcode 6中的这个错误：

IsolatedStorageException: Could not find a part of the path "/private/var/mobile/Containers/Bundle/Application/D9F47ED4-40E1-420E-A5A8-836F52BC301C/Documents/GameSave3.dat".
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0 
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean isAsync, Boolean anonymous) [0x00000] in <filename unknown>:0 
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access) [0x00000] in <filename unknown>:0 
  at LoadSave.LoadGameData () [0x00000] in <filename unknown>:0 
  at MainLoop.Update () [0x00000] in <filename unknown>:0 

(Filename:  Line: -1)

这是包含LoadGameData（）函数的LoadSave.cs文件：

using UnityEngine;
using System.Collections;
using System.IO;


public class LoadSave : MonoBehaviour {

    void Start () 
    {
        Debug.Log ("Start LoadSave");

        Globals.g_loadSave = this;  
    }

    void Update () {

    }

    void SetGameDataDefaults () 
    {
        for (int i = 0; i < (int)World.ActivityType.kNum; i++)
        {
            Globals.g_main.world.notification_day[i] = -1;
            Globals.g_main.world.notification_hour[i] = -1;
            Globals.g_main.world.notification_minute[i] = -1;
        }                   
    }

    string pathForDocumentsFile( string filename ) 
    { 
        if (Application.platform == RuntimePlatform.IPhonePlayer)
        {
            string path = Application.dataPath.Substring( 0, Application.dataPath.Length - 5 );
            path = path.Substring( 0, path.LastIndexOf( '/' ) );
            return Path.Combine( Path.Combine( path, "Documents" ), filename );
        }       
        else if(Application.platform == RuntimePlatform.Android)
        {
            string path = Application.persistentDataPath;   
            path = path.Substring(0, path.LastIndexOf( '/' ) ); 
            return Path.Combine (path, filename);
        }   
        else 
        {
            string path = Application.dataPath; 
            path = path.Substring(0, path.LastIndexOf( '/' ) );
            return Path.Combine (path, filename);
        }
    }   

    public void SaveGameData()
    {
        Utilities.Log("Write to GameSave File");                                            

        string path = this.pathForDocumentsFile("GameSave3.dat" );      
        FileStream file = new FileStream (path, FileMode.Open, FileAccess.Write);           
        this.WriteGameDataToFile(file);     
        file.Close();
    }

    public void LoadGameData()
    {
        string path = pathForDocumentsFile( "GameSave3.dat" );

        //if the file has not been made yet then set defaults and create it...
        if (!File.Exists(path))
        {
            Utilities.Log("Create GameSave File");                                  
            this.SetGameDataDefaults();
            FileStream newFile = new FileStream (path, FileMode.Create, FileAccess.Write);
            this.WriteGameDataToFile(newFile);
            newFile.Close();

            return;
        }

        //Otherwise just read it

        Utilities.Log("Read GameSave File");                        

        FileStream file = new FileStream (path, FileMode.Open, FileAccess.Read);        
        this.ReadGameDataFromFile(file);
        file.Close();
    }



    void ReadGameDataFromFile(FileStream filestream)
    {
        BinaryReader reader = new BinaryReader(filestream);

        for (int i = 0; i < World.kNumOpenPlayGamesRemembered; i++)
        {
            Globals.g_main.world.lastOpenPlayGames[i] = (GameType)reader.ReadInt32();
        }       

        Globals.g_main.world.openPlayRememberIndex = reader.ReadInt32();

        for (int i = 0; i < (int)World.ActivityType.kNum; i++)
        {
            Globals.g_main.world.numBadges[i] = reader.ReadInt32();
        }       

        //stored local notification info

        for (int i = 0; i < (int)World.ActivityType.kNum; i++)
        {
            Globals.g_main.world.notification_day[i] = reader.ReadInt32();
            Globals.g_main.world.notification_hour[i] = reader.ReadInt32();
            Globals.g_main.world.notification_minute[i] = reader.ReadInt32();
        }               

    }   


    void WriteGameDataToFile(FileStream filestream)
    {
        BinaryWriter writer = new BinaryWriter(filestream);

        for (int i = 0; i < World.kNumOpenPlayGamesRemembered; i++)
        {
            writer.Write((int)Globals.g_main.world.lastOpenPlayGames[i]);
        }       

        writer.Write(Globals.g_main.world.openPlayRememberIndex);

        for (int i = 0; i < (int)World.ActivityType.kNum; i++)
        {
            writer.Write((int)Globals.g_main.world.numBadges[i]);
        }       

        //stored local notification info

        for (int i = 0; i < (int)World.ActivityType.kNum; i++)
        {
            writer.Write((int)Globals.g_main.world.notification_day[i]);
            writer.Write((int)Globals.g_main.world.notification_hour[i]);
            writer.Write((int)Globals.g_main.world.notification_minute[i]);
        }       


    }
}

让我感到困惑的是，为什么它适用于所有版本的iOS而不是iOS 8.任何想法可能是什么问题？谢谢。

Answer 1

我最终想通了。问题在于pathForDocumentsFile（）函数中使用的dataPath方法。早期版本的iOS并不要求路径是持久的，因为我将它用于机器人下面。使用persistentDataPath方法替换dataPath方法可以解决iOS 8中的问题。

if (Application.platform == RuntimePlatform.IPhonePlayer){
    string path = Application.persistentDataPath.Substring( 0, Application.persistentDataPath.Length - 5 );
    path = path.Substring( 0, path.LastIndexOf( '/' ) );
    return Path.Combine( Path.Combine( path, "Documents" ), filename );
}

iOS 8中的IsolatedStorageException

1 个答案: