iOS development-File compression and decompression

Third party decompression Frame--ssziparchive

: https://github.com/samsoffes/ssziparchive
Note: The Libz.dylib framework needs to be introduced

//unzippingNSString*zippath = @"Path_to_your_zip_file";NSString*destinationpath [email protected]"path_to_the_folder_where_you_want_it_unzipped"; [Ssziparchive Unzipfileatpath:zippath Todestination:destinationpath];//ZippingNSString*zippedpath = @"path_where_you_want_the_file_created";Nsarray*inputpaths = [NsarrayArraywithobjects: [[NSBundleMainbundle] pathforresource:@"Photo1"oftype:@"JPG"],                       [[NSBundleMainbundle] pathforresource:@"Photo2"oftype:@"JPG"]Nil]; [Ssziparchive Createzipfileatpath:zippedpath withfilesatpaths:inputpaths];

I. Technical PROGRAMMES
1. Third-party framework: Ssziparchive
2. Dependent Dynamic Library: Libz.dylib

Two, compression 1
1. The first method
/**
ZipFile: The final path of the resulting zip file
Directory: Compressed folder path that needs to be made
*/

[SSZipArchive createZipFileAtPath:zipFile withContentsOfDirectory:directory];

2. The first method
/**
ZipFile: The final path of the resulting zip file
Files: This is an array that contains the path to the files that need to be compressed
Files = @[@ "/users/apple/destop/1.png", @ "/users/apple/destop/3.txt"]
*/

[SSZipArchive createZipFileAtPath:zipFile withFilesAtPaths:files];

Three, decompression
/**
ZipFile: The path of the zip file that needs to be unzipped
Dest: Where to unzip?
*/

[SSZipArchive unzipFileAtPath:zipFile toDestination:dest];

File Compression instance

#import "MalJobViewController.h" #import "SSZipArchive.h" #define Maljobfileboundary @ "Heima"#define Maljobnewline @ "\ r \ n"#define MALJOBENCODE (str) [str datausingencoding:nsutf8stringencoding] @interface maljobviewcontroller ()@end @implementation maljobviewcontroller - (void) viewdidload{[SuperViewdidload];} - (NSString*) MIMEType: (Nsurl*) url{//1. Create a request    nsurlrequest*request = [nsurlrequestRequestwithurl:url];//2. Send request (return response)Nsurlresponse *response =Nil; [nsurlconnectionSendsynchronousrequest:request Returningresponse:&response Error:Nil];//3. Get MimeType    returnResponse. MIMEType;} - (void) Touchesbegan: (Nsset *) touches withevent: (uievent *) event{NSString*caches = [Nssearchpathfordirectoriesindomains (Nscachesdirectory, Nsuserdomainmask,YES) Lastobject];//0. Get the folder you want to compress    NSString*images = [Caches stringbyappendingpathcomponent:@"Images"];//1. Create a ZIP file (compressed)    NSString*zipfile = [Caches stringbyappendingpathcomponent:@"Images.zip"];BOOLresult = [ssziparchive createzipfileatpath:zipfile withcontentsofdirectory:images];if(Result) {NSString*mimetype = [ Selfmimetype:[NsurlFileurlwithpath:zipfile]];        NSData *data = [NSData datawithcontentsoffile:zipfile]; [ Selfupload:@"Images.zip"Mimetype:mimetype Filedata:data params:@{@"username": @"Lisi"}]; }}- (void) Upload: (NSString*) filename MimeType: (NSString*) MimeType FileData: (NSData *) FileData params: (nsdictionary*) params{//1. Request Path    Nsurl*url = [Nsurlurlwithstring:@"Http://192.168.15.172:8080/Server/upload"];//2. Create a POST requestNsmutableurlrequest *request = [Nsmutableurlrequest Requestwithurl:url]; Request. HttpMethod= @"POST";//3. Set the request bodyNsmutabledata *body = [Nsmutabledata data];//3.1. File Parameters[Body Appenddata:maljobencode (@"--")];    [Body Appenddata:maljobencode (maljobfileboundary)]; [Body Appenddata:maljobencode (maljobnewline)];NSString*disposition = [NSStringstringwithformat:@"Content-disposition:form-data; Name=\ "File\"; Filename=\ "%@\" ", filename];    [Body Appenddata:maljobencode (disposition)]; [Body Appenddata:maljobencode (maljobnewline)];NSString*type = [NSStringstringwithformat:@"Content-type:%@", MimeType];    [Body Appenddata:maljobencode (type)];    [Body Appenddata:maljobencode (maljobnewline)];    [Body Appenddata:maljobencode (maljobnewline)];    [Body appenddata:filedata]; [Body Appenddata:maljobencode (maljobnewline)];//3.2. Non-file parameters[Params enumeratekeysandobjectsusingblock:^ (IDKeyIDObjBOOL*stop) {[Body Appenddata:maljobencode (@"--")];        [Body Appenddata:maljobencode (maljobfileboundary)]; [Body Appenddata:maljobencode (maljobnewline)];NSString*disposition = [NSStringstringwithformat:@"Content-disposition:form-data; Name=\ "%@\" ", key];        [Body Appenddata:maljobencode (disposition)];        [Body Appenddata:maljobencode (maljobnewline)];        [Body Appenddata:maljobencode (maljobnewline)];        [Body appenddata:maljobencode ([obj description]);    [Body Appenddata:maljobencode (maljobnewline)]; }];//3.3. End tag[Body Appenddata:maljobencode (@"--")];    [Body Appenddata:maljobencode (maljobfileboundary)]; [Body Appenddata:maljobencode (@"--")];    [Body Appenddata:maljobencode (maljobnewline)]; Request. Httpbody= Body;//4. Set the request header (tell the server this time to you is the file data, tell the server is now sending a file upload request)    NSString*contenttype = [NSStringstringwithformat:@"Multipart/form-data; boundary=%@ ", Maljobfileboundary]; [Request Setvalue:contenttype forhttpheaderfield:@"Content-type"];//5. Send Request[nsurlconnectionSendasynchronousrequest:request Queue:[nsoperationqueue Mainqueue] completionhandler:^ (NSURLResponse *response, NSData *data,Nserror*connectionerror) {nsdictionary*dict = [nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingmutableleaves Error:Nil];NSLog(@"%@", dict); }];}@end

File Decompression Instance

#import "MalJobViewController.h" #import "SSZipArchive.h"  @implementation maljobviewcontroller - (void) viewdidload{[SuperViewdidload];additional setup after loading the view, typically from a nib.}- (void) Touchesbegan: (Nsset *) touches withevent: (uievent *) event{Nsurl*url = [Nsurlurlwithstring:@"Http://localhost:8080/Server/resources/images.zip"]; Nsurlsessiondownloadtask *task = [[nsurlsession sharedsession] Downloadtaskwithurl:url completionHandler:^ (Nsurl*location, Nsurlresponse *response,Nserror*error) {NSString*caches = [Nssearchpathfordirectoriesindomains (Nscachesdirectory, Nsuserdomainmask,YES) Lastobject]; [Ssziparchive unzipfileatpath:location. PathTodestination:caches];    }]; [Task resume];}@end

iOS development-File compression and decompression