you can do like this way:-
i found one greate answer in stack overflow below from this link download and unzip file in iOS please check below
I've used ZipArchive with success in the past. It's pretty ligthweight and simple to use, supports password protection, multiple files inside a ZIP, as well as compress & decompress.
The basic usage is:
NSString *filepath = [[NSBundle mainBundle] pathForResource:@"ZipFileName" ofType:@"zip"];
ZipArchive *zipArchive = [[ZipArchive alloc] init];
[zipArchive UnzipOpenFile:filepath Password:@"xxxxxx"];
[zipArchive UnzipFileTo:{pathToDirectory} overWrite:YES];
[zipArchive UnzipCloseFile];
[zipArchive release];
more examples about this package here
I have also tried SSZipArchive in some projects. Below line would unzip your zip file.
[SSZipArchive unzipFileAtPath:path toDestination:destination];
please also check the example hope its helps you :)
Edit
please visit this :-