iPhone zip压缩与解压

ziparchive是基于开源代码"MiniZip"的zip压缩与解压的Objective-C 的Class,使用起来非常的简单.你只需要把代码加进你的工程,然后把zlib库添加到工程就可以了.
ziparchive可以在googlecode上下载,地址如下
http://code.google.com/p/ziparchive/

压缩:

ZipArchive可以压缩多个文件,只需要把文件一 一addFileToZip即可.

1.    ZipArchive* zip = [[ZipArchive alloc] init];
2.         
3.     NSArray *paths =  NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,  NSUserDomainMask, YES);
4.           NSString *dcoumentpath = ([paths count] > 0) ?  [paths objectAtIndex:0] : nil;
5.           NSString* l_zipfile = [dcoumentpath  stringByAppendingString:@"/test.zip"] ;
6.         
7.           NSString* image1 = [dcoumentpath  stringByAppendingString:@"/image1.jpg"] ;  
8.           NSString* image2 = [dcoumentpath  stringByAppendingString:@"/image2.jpg"] ;     
9.         
10.           BOOL ret = [zip CreateZipFile2:l_zipfile];
11.           ret = [zip addFileToZip:image1 newname:@"image1.jpg"];
12.           ret = [zip addFileToZip:image2 newname:@"image2.jpg"];
13.           if( ![zip CloseZipFile2] )
14.           {
15.               l_zipfile = @"";
16.           }
17.           [zip release];

复制代码

解压缩:

1. ZipArchive* zip = [[ZipArchive alloc] init];
2.           NSArray *paths =  NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,  NSUserDomainMask, YES);
3.           NSString *dcoumentpath = ([paths count] > 0) ?  [paths objectAtIndex:0] : nil;
4.         
5.           NSString* l_zipfile = [dcoumentpath  stringByAppendingString:@"/test.zip"] ;
6.           NSString* unzipto = [dcoumentpath  stringByAppendingString:@"/test"] ;
7.           if( [zip UnzipOpenFile:l_zipfile] )
8.           {
9.               BOOL ret = [zip UnzipFileTo:unzipto  overWrite:YES];
10.               if( NO==ret )
11.               {
12.               }
13.               [zip UnzipCloseFile];
14.           }
15.           [zip release];
16.           转载出处：http://blog.csdn.net/wishfly/article/details/7366043