IOS学习笔记：NSFileManager常用方法

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////  main.m//  task1////  Created by Gaowz on 14-3-17.//  Copyright (c) 2014年 Gaowz 无限互联3G学院. All rights reserved.//#import <UIKit/UIKit.h>#import "AppDelegate.h"int main(int argc, char *argv[]){    @autoreleasepool {                NSString *homepath = NSHomeDirectory();        NSString *documents = [homepath stringByAppendingPathComponent:@"Documents"];        NSLog(@"%@",documents);                //创建 NSFileManager 对象        NSFileManager *fileManager = [NSFileManager defaultManager];        NSString *path = [documents stringByAppendingPathComponent:@"whxl.text"];        NSLog(@"%@",path);        NSString *text = @"无限互联";        //字符串 转成 NSData        NSData *data = [text dataUsingEncoding:NSUTF8StringEncoding];        NSString *newPath = [documents stringByAppendingPathComponent:@"whxl_bak.text"];                        //写入文件                        [fileManager createFileAtPath:path                                             contents:data                                           attributes:nil];                        [fileManager createFileAtPath:newPath                                             contents:data                                           attributes:nil];                        //复制文件                        [fileManager copyItemAtPath:path                                              toPath:newPath                                               error:nil];        //判断文件存在        BOOL isExist = [fileManager fileExistsAtPath:path];        if (isExist) {            BOOL success = [fileManager removeItemAtPath:path error:nil];            if (success) {                NSLog(@"已经删除！");            }        }        //根据路径查找文件        NSData *fileData = [fileManager contentsAtPath:newPath];        //NSData 转成  NSString        NSString *content = [[NSString alloc]initWithData:fileData encoding:NSUTF8StringEncoding];        NSLog(@"whxl_bak:%@",content);                                                        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));    }}
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