在iPhone中读写文件 [英] Read and write file in iPhone

问题描述

如何在iPhone上进行文件读写操作？这是我需要指定保存文件的路径吗？如何在iPhone中获取当前的工作目录？

How to make file read/write operation on iPhone?which is the path i need to specify to save the file? how can i get the current working directory in iPhone?

谢谢

Thank You

推荐答案

写入文件：

Write to a file:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

// the path to write file
NSString *myFile = [documentsDirectory stringByAppendingPathComponent:@"myFile"];

[data writeToFile:myFile atomically:YES];

阅读文件：

Read a file:

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"MyFile" ofType:@"txt"];  
NSData *myData = [NSData dataWithContentsOfFile:filePath];  
if (myData) {  
    // do something useful  
}  

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