iOS 开发压缩--SSZipArchive

// 解压
NSString *zipPath = @"被解压的文件路径";
NSString *destinationPath = @"解压到的目录";
[SSZipArchive unzipFileAtPath:zipPath toDestination:destinationPath];

// 压缩
NSString *zippedPath = @"压缩文件路径";
NSArray *inputPaths = [NSArray arrayWithObjects:
                       [[NSBundle mainBundle] pathForResource:@"photo1" ofType:@"jpg"],
                       [[NSBundle mainBundle] pathForResource:@"photo2" ofType:@"jpg"]
                       nil];
[SSZipArchive createZipFileAtPath:zippedPath withFilesAtPaths:inputPaths];

SSZipArchive使用详解

http://blog.csdn.net/kqygww/article/details/24851877