在iPhone中读取和写入文件

Question

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？我怎样才能得到iPhone中的当前工作目录？

谢谢

Answer 1

写入文件：

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：

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