【C#】读取和写入本地txt文件

本次我们要使用C#的方式进行txt文件的读取和写入，在Unity的开发过程中同样适用，下面来具体实现吧。

创建文件的打开、关闭、读取、写入类：MyFileStream

要引入System.IO和System.Runtime.Serialization.Formatters.Binary和，一个是文件读取的IO类和另一个是二进制类，具体代码如下：

using UnityEngine;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;

public class MyFileStream
{
FileStream file;

StreamReader st;
StreamWriter sw;

public bool Open(string FileName, FileAccess Mode)
{
bool Success = false;
string path = PathForDocumentsFile(FileName);

if (Mode == FileAccess.Read)
{
if (File.Exists(path))
{
file = new FileStream(path, FileMode.Open, FileAccess.Read);
if (file != null)
{
st = new StreamReader(file);
Success = true;
}
}
}
else if (Mode == FileAccess.Write)
{
file = new FileStream(path, FileMode.Create, FileAccess.Write);
if (file != null)
{
sw = new StreamWriter(file);
Success = true;
}
}
return Success;
}

public string ReadLine()
{
return st.ReadLine();
}

public void WriteLine(string Line)
{
sw.WriteLine(Line);
}

public void Close()
{
if( st != null )
{
st.Close();
st = null;
}
if (sw != null)
{
sw.Close();
sw = null;
}
if( file != null )
{
file.Close();
file = null;
}
}

public string PathForDocumentsFile(string filename)
{
//暂时只判断安卓和PC
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);
}
}

}

创建需要保存的文件和字段具体调用类：MyLocalData

using UnityEngine;
using System.Collections;

public class MyLocalData : MonoBehaviour {
public static MyLocalData Instance()
{
if (_instance == null)
{
_instance = new MyLocalData();
}
return _instance;
}

public class MyLocalSaveData
{
public int test01;
public int test02;
public int test03;
}

public MyLocalSaveData m_Data = new MyLocalSaveData();

MyFileStream m_FS = new MyFileStream();

string m_FileName = "LocalSaveData.txt";

public void InitLoad()
{
if (m_FS.Open(m_FileName, System.IO.FileAccess.Read))
{
m_Data.test01 = 0;
m_Data.test02 = 0;
m_Data.test03 = 0;

int Num = 0;
if(int.TryParse(m_FS.ReadLine() , out Num))
{
m_Data.test01 = Num;
}
if(int.TryParse(m_FS.ReadLine() , out Num))
{
m_Data.test02 = Num;
}
if(int.TryParse(m_FS.ReadLine() , out Num))
{
m_Data.test03 = Num;
}

m_FS.Close();
}

}

public void Write()
{
if (m_FS.Open(m_FileName, System.IO.FileAccess.Write))
{
m_FS.WriteLine(m_Data.test01.ToString());
m_FS.WriteLine(m_Data.test02.ToString());
m_FS.WriteLine(m_Data.test03.ToString());

m_FS.Close();
}
}
}

可以把MyLocalData类挂载在场景中的一个GameObject上，然后需要调用进行读取写入就是如下代码即可，读取：

MyLocalData.Instance().m_Data.test01;

写入：

MyLocalData.Instance().m_Data.test01 = 1;
MyLocalData.Instance().Write();

Ricky Yang个人原创，版权所有，转载注明，谢谢。http://blog.csdn.net/yangyy753