NSFileManager使用总结

////  AdressCard.h//  Fmzongjie////  Created by neworigin on 14-9-16.//  Copyright (c) 2014年 Damon. All rights reserved.//#import <Foundation/Foundation.h>@interface AdressCard : NSObject<NSCoding>{    NSString *name;    NSString *qqnumber;}@property NSString *name;@property NSString *qqnumber;@end

////  AdressCard.m//  Fmzongjie////  Created by neworigin on 14-9-16.//  Copyright (c) 2014年 Damon. All rights reserved.//#import "AdressCard.h"@implementation AdressCard@synthesize name;@synthesize qqnumber;- (void)encodeWithCoder:(NSCoder *)aCoder{    [aCoder encodeObject:name forKey:@"name"];    [aCoder encodeObject:qqnumber forKey:@"qqnumber"];}- (id)initWithCoder:(NSCoder *)aDecoder{    if (self=[super init]) {        self.name=[aDecoder decodeObjectForKey:@"name"];        self.qqnumber=[aDecoder decodeObjectForKey:@"qqnumber"];        return self;    }    return nil;}@end

////  main.m//  Fmzongjie////  Created by neworigin on 14-9-16.//  Copyright (c) 2014年 Damon. All rights reserved.//#import <Foundation/Foundation.h>#import "AdressCard.h"NSString *filename=@"/Users/neworigin/Desktop/file1.txt";NSString *file2name=@"/Users/neworigin/Desktop/file2.txt";NSString *file3name=@"/Users/neworigin/Desktop/file3.txt";NSString *file4name=@"/Users/neworigin/Desktop/file4.txt";int main(int argc, const char * argv[]){    @autoreleasepool {        AdressCard *a=[[AdressCard alloc]init];        a.name=@"Damon";        a.qqnumber=@"544712635";        /*写入文件*/        [NSKeyedArchiver archiveRootObject:a toFile:filename];        /*读出文件*/        AdressCard *b=[NSKeyedUnarchiver unarchiveObjectWithFile:filename];        NSLog(@"1.读出文件filename: %@,%@",b.name,b.qqnumber);        /**FM定义**/        NSFileManager *fm=[NSFileManager defaultManager];        /*创建字典显示文件信息*/        NSDictionary *filedic=[fm attributesOfItemAtPath:filename error:nil];        NSLog(@"2.创建字典显示文件信息: %@",filedic);        /*利用字典单独显示相应值，例如filesize*/        int filesize=[[filedic objectForKey:@"NSFileSize"]intValue];        NSLog(@"3.filesize= %d",filesize);        /*通过提取文件中的二进制数据获取正常信息*/        NSData *fileinf=[fm contentsAtPath:filename];        NSLog(@"4.二进制信息: %@",fileinf);//二进制信息        AdressCard *c=[NSKeyedUnarchiver unarchiveObjectWithData:fileinf];        NSLog(@"5.正常信息: %@,%@",c.name,c.qqnumber);        /*创建文件*/        BOOL succeed=NO;        succeed=[fm createFileAtPath:file2name contents:fileinf attributes:nil];        if (succeed) {            NSLog(@"创建file2name成功");        }        else            NSLog(@"创建file2name失败");        /*比较两个文件是否相同*/        BOOL equal=NO;        equal=[fm contentsEqualAtPath:filename andPath:file2name];        if (equal) {            NSLog(@"文件相同");        }        else            NSLog(@"文件不同");        /*递归显示,包括子目录*/        NSDirectoryEnumerator *enumer=[fm enumeratorAtPath:@"/Users/neworigin/Desktop/"];        NSLog(@"6.enumer: %@",[enumer allObjects]);        //获取当前目录路径NSLog(@"%@",[fm currentDirectoryPath]);//列举出指定目录下的内容(OS X 10.0以后使用，10.5 第一次被弃用 ——> - (NSArray *)contentsOfDirectoryAtPath:(NSString *)path error:(NSError **)error)    //NSArray * dirArray105 = [fm directoryContentsAtPath:tmpPath];        NSLog(@"%@",[fm contentsOfDirectoryAtPath:@"/Users/neworigin/Desktop/" error:nil]);//得到当前工程的临时目录NSLog(@"%@", NSTemporaryDirectory());//得到当前登录用户主目录（homeDirector）NSString *home=NSHomeDirectory();        NSLog(@"%@",home);//得到当前指定用户主目录（HomeDirectoryForUser）NSLog(@"%@",NSHomeDirectoryForUser(@"neworigin"));//得到路径中最后一个组合目录NSLog(@"%@",[home lastPathComponent]);        NSLog(@"%@",[filename lastPathComponent]);//在已存在的目录后面追加自定义目录（可以写'/'，也可以不写'/'）NSString *st=[file3name stringByAppendingString:@"/oc/oc"];        NSLog(@"%@",st);//创建指定路径下面的目录（其中参数“withIntermediateDirectories:(BOOL)”,如果传递的是‘NO’->当前目录之前的路径如果无效，则返回NO，即指定路径下的目录创建失败；如果传递的是‘YES’->当前目录之前的路径如果无论有效或无效，则返回YES，即指定路径下的目录创建成功；）        BOOL creat=NO;creat=[fm createDirectoryAtPath:st withIntermediateDirectories:YES attributes:nil error:nil];        if (creat) {            NSLog(@"creat succeed");        }        else            NSLog(@"creat failed");//得到当前目录NSLog(@"%@",[fm currentDirectoryPath]);//得到路径中文件的后缀        NSLog(@"%@",[filename pathExtension]);            }    return 0;}