IOS开发—图片压缩/解压成Zip文件

来源：互联网发布：淘宝消保30元怎么交编辑：程序博客网时间：2024/05/16 11:03

图片压缩/解压成Zip文件

本文介绍如何将图片压缩成Zip文件，首先需要下载第三方库ZipArchive 并导入项目中。

ZipArchive 库地址：https://github.com/mattconnolly/ZipArchive

一、文档结构：

二、准备工作：

1、框架导入：

2、ZipArchive.m文件使用非ARC机制

三、代码示例：

//// ViewController.m//  UnzipImgDemo////  Created byLotheve on 15/4/10.//  Copyright (c)2015年 Lotheve. All rights reserved.// #import "ViewController.h"#import "ZipArchive.h" @interface ViewController () @property (weak, nonatomic) IBOutlet UIImageView *imgView; @property (weak, nonatomic) IBOutlet UIButton *zipBtn;@property (weak, nonatomic) IBOutlet UIButton *unzipBtn;@property (weak, nonatomic) IBOutlet UIButton *zipFileDeBtn;@property (weak, nonatomic) IBOutlet UIButton *zipedFiledeBtn; @property (weak, nonatomic) IBOutlet UILabel *statusLabel; @end @implementation ViewController - (void)viewDidLoad {    [super viewDidLoad];    [self downLoadImg];}

//加载图片到本地- (void)downLoadImg{    NSString *URLString = @"https://www.baidu.com/img/bdlogo.png";    NSURL *URL = [NSURL URLWithString:URLString];    NSData *data = [NSData dataWithContentsOfURL:URL];       NSMutableString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];;    NSString *imgPath = [path stringByAppendingPathComponent:@"baidu.png"];    [data writeToFile:imgPath atomically:YES];}

//压缩文件- (IBAction)zipFile:(id)sender {    NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];    NSString *cachesPath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject];    NSString *imgPath = [cachesPath stringByAppendingPathComponent:@"baidu.png"];    NSString *zipFilePath = [docsPath stringByAppendingPathComponent:@"newZipFile.zip"];    //实例化一个压缩文档，并创建文件    ZipArchive *za = [[ZipArchive alloc]init];    [za CreateZipFile2:zipFilePath];    //在压缩文档中添加文件    [za addFileToZip:imgPath newname:@"baidu_zipped.png"];    //关闭zip文件操作    BOOL success = [za CloseZipFile2];    if (success) {        _statusLabel.text = @"压缩成功";    }else{        _statusLabel.text = @"压缩失败";    }}

//解压文件- (IBAction)unzipFile:(id)sender {    NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];    NSString *zipPath = [docsPath stringByAppendingPathComponent:@"newZipFile.zip"];    ZipArchive *za = [[ZipArchive alloc]init];    //在内存中解压文件    if ([za UnzipOpenFile:zipPath]) {        //将解压的内容写到磁盘中        BOOL success = [za UnzipFileTo:docsPath overWrite:YES];        if (!success) {            _statusLabel.text = @"解压失败";        }else{            //关闭压缩文件            [za UnzipCloseFile];            _statusLabel.text = @"解压成功";            NSString *imgPath = [docsPath stringByAppendingPathComponent:@"baidu_zipped.png"];            NSData *data = [NSData dataWithContentsOfFile:imgPath];            UIImage *image = [UIImage imageWithData:data];            _imgView.image = image;        }    }else{        _statusLabel.text = @"压缩文件不存在";    }}

//删除压缩文件- (IBAction)deleteZipFile:(id)sender {    NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];    NSString *zipPath = [docsPath stringByAppendingPathComponent:@"newZipFile.zip"];    //创建文件管理器    NSFileManager *fm = [NSFileManager defaultManager];    //判断指定路径文件是否存在    BOOL exist = [fm fileExistsAtPath:zipPath];    if (exist) {        NSError *error = nil;        [fm removeItemAtPath:zipPath error:&error];        if (!error) {            _statusLabel.text = @"删除压缩文件成功";        }else{            _statusLabel.text = @"删除压缩文件失败";        }    }else{        _statusLabel.text = @"文件不存在";    }}

//删除解压文件- (IBAction)deleteZipedFile:(id)sender {    NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];    NSString *zippedFilePath = [docsPathstringByAppendingPathComponent:@"baidu_zipped.png"];       NSFileManager *fm = [NSFileManager defaultManager];    BOOL exist = [fm fileExistsAtPath:zippedFilePath];    if (exist) {        NSError *error = nil;        [fm removeItemAtPath:zippedFilePath error:&error];        if (!error) {            _statusLabel.text = @"删除解压文件成功";            _imgView.image = nil;        }else{            _statusLabel.text = @"删除解压文件失败";        }    }else{        _statusLabel.text = @"文件不存在";    }}

@end

四：效果演示

点击压缩按钮：

点击解压按钮：

删除按钮：

附：文件请在沙盒中自行查看

0 1