IOS文件名称管理工具类

来源：互联网发布：大数据数据仓库编辑：程序博客网时间：2024/05/29 13:41

Demo下载地址：http://download.csdn.net/download/conslee/7237547

// LGFileManager.h
// FileNameDemo
//
// Created by li.gang on 14-4-23.
// Copyright (c) 2014年 LG. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface LGFileManager : NSObject

//返回数据库在沙盒中的路径
+ (NSString *)getPath;

//传入文件a.png,如果documents里面有此文件名那就自动生成a(1).png a(2).png a(3).png......
+ (NSString *)getSaveName:(NSString *)name;

+ (void)saveVideoData:(NSData *)data filePath:(NSString *)urlString;

@end

//
// LGFileManager.m
// FileNameDemo
//
// Created by li.gang on 14-4-23.
// Copyright (c) 2014年 LG. All rights reserved.
//

#import "LGFileManager.h"

@implementation LGFileManager

//返回数据库在沙盒中的路径
+ (NSString *)getPath
{
    NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory
                                                       , NSUserDomainMask
                                                       , YES);
    NSString *path = [paths objectAtIndex:0];
    return path;
}

//传入文件a.png,如果documents/tmp里面有此文件名那就自动生成a(1).png a(2).png a(3).png......
+ (NSString *)getSaveName:(NSString *)name{

    NSString *path = [self getPath];
    NSFileManager * fileManager = [NSFileManager defaultManager];
    NSArray * tempFileList = [[NSArray alloc] initWithArray:[fileManager contentsOfDirectoryAtPath:path error:nil]];
    NSString *Qname = [[name componentsSeparatedByString:@"."] objectAtIndex:0];

    //拿到同名的文件
    NSMutableArray *mutArrName = [NSMutableArray array];
    for (NSString *s in tempFileList) {
        if ([s rangeOfString:Qname].location !=NSNotFound){
            [mutArrName addObject:s];
        }
    }

    //如果没有同名的直接直接返回name a.png
    if (mutArrName.count == 0) return name;

    if (mutArrName.count == 1) {
        //如果有一个文件还需要判断是不是a.png 是就返回a(1).png
        if ([name isEqualToString:[mutArrName objectAtIndex:0]]) {
            return [NSString stringWithFormat:@"%@(1).png",[[name componentsSeparatedByString:@"."] objectAtIndex:0]];//返回a(1).png
        }else{
            return name;//返回a.png
        }
    }else{

        int k = 0;//有多个文件首先判断有没有a.png k=0是没有 k=1是有
        NSMutableArray *mutArrNum = [NSMutableArray array];//存放增加的数字字符串
        for (NSString *s in mutArrName) {
            if ([s isEqualToString:name]) {
                k = 1;
            }

            if ([s rangeOfString:@"("].location !=NSNotFound) {
                NSString *num = [[[[s componentsSeparatedByString:@"("] objectAtIndex:1] componentsSeparatedByString:@")"] objectAtIndex:0];
                [mutArrNum addObject:num];
            }
        }

        if (k == 0) {
            return name;//返回a.png
        }

        for (int i=1; i <= mutArrNum.count+1; i++) {
            int j = 0;

            for (NSString *s in mutArrNum) {
                if (i == [s integerValue]) {
                    j = 1;
                }
            }

            if (j == 0) {
                return [NSString stringWithFormat:@"%@(%d).png",[[name componentsSeparatedByString:@"."] objectAtIndex:0],i];//返回a(i).png
            }

        }

    }

    return name;
}

+ (void)saveVideoData:(NSData *)data filePath:(NSString *)urlString
{


    NSString * getName = [self getSaveName:urlString];


    //初始化Documents路径
    NSString *path = [[self getPath]
                      stringByAppendingPathComponent:@""];
    NSString *name = [NSString stringWithFormat:@"/%@",getName];
    //初始化文件路径
    NSString *fileName=[path stringByAppendingPathComponent:name];

    //判断temp文件夹是否存在
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL fileExists = [fileManager fileExistsAtPath:path];
    if (!fileExists) {//如果不存在说创建,因为下载时,不会自动创建文件夹

        [fileManager createDirectoryAtPath:path
               withIntermediateDirectories:YES
                                attributes:nil
                                     error:nil];
    }
    if ([data writeToFile:fileName atomically:YES]) {
        NSLog(@">>write ok.");
    }
}

@end

Demo下载地址：http://download.csdn.net/download/conslee/7237547

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