Ext: iOS image File upload code

Transferred from: https://gist.github.com/igaiga/1354221

@interface Imageuploader: nsobject {

NSData *theimage;

}

@property (retain) nsdata *theimage;

-(void) syncupload:(nsdata *) uploadimage;

@end

#Import "ImageUploader.h"

#define notify_and_leave (X) {[self cleanup:x]; return;}

#define DATA (x) [x datausingencoding:nsutf8stringencoding]

Posting Constants

#Define image_content @ "content-disposition:form-data; name=\"%@\ "; Filename=\" Image.jpg\ "\r\ncontent-type:image/jpeg\r\n\r\n"

#define boundary @ "------------0x0x0x0x0x0x0x0x"

@implementation Imageuploader

@synthesize theimage;

-(void) syncupload:(nsdata *) uploadimage

{

Self. theimage = uploadimage;

[self main];

}

-(void) cleanup: (nsstring *) output

{

Self. theimage = nil;

NSLog (@ "********%@", output);

}

-(nsdata*)generateformdatafrompostdictionary:(nsdictionary*)dict

{

ID boundary = boundary;

nsarray* keys = [dict AllKeys];

nsmutabledata* result = [nsmutabledata data];

for (int i = 0; i < [keys count]; i++)

{

ID value = [dict valueforkey: [Keys objectatindex:i]];

[Result appenddata:[[nsstring stringwithformat:@ "--%@\ r \ n", boundary] Datausingencoding:nsutf8stringencoding]];

if ([Value iskindofclass:[NSData class]])

{

Handle image data

NSString *formstring = [nsstring stringwithformat:image_content, [Keys objectatindex:i]];

[Result AppendData: DATA (formstring)];

[Result Appenddata:value];

}

NSString *formstring = @ "\ r \ n";

[Result AppendData:DATA (formstring)];

}

NSString *formstring =[nsstring stringwithformat:@ "-%@--\ r \ n", boundary];

[Result AppendData:DATA (formstring)];

return result;

}

Nsoperationqueueによる of non-contemporaneous えてmainにしています.

-(void) main

{

if (!self. Theimage) {

Notify_and_leave (@ "Please set image before uploading.");

}

nsstring* Multipartcontenttype = [nsstring stringWithFormat:@ "multipart/form-data; boundary=%@ ", boundary];

nsmutabledictionary* post_dict = [[nsmutabledictionary alloc] init];

[Post_dict SetObject:@ "Testimage" forkey:@ "filename"];

[Post_dict setobject:self.theimage forkey:@ "data[user][image]"];

NSData *postdata = [self generateformdatafrompostdictionary:post_dict];

[Post_dict release];

NSString *baseurl = @ "Https://example.com/api/upload_image";

Nsurl *url = [nsurl Urlwithstring:baseurl];

Nsmutableurlrequest *urlrequest = [nsmutableurlrequest Requestwithurl:url];

if (!urlrequest) notify_and_leave (@ "Error creating the URL Request");

[URLRequest Sethttpmethod: @ "POST"];

[URLRequest setvalue:multipartcontenttype Forhttpheaderfield: @ "Content-type"];

[URLRequest sethttpbody:postdata];

Nserror *error;

Nsurlresponse *response;

nsdata* result = [nsurlconnection sendsynchronousrequest:urlrequest returningresponse:&response error:&error];

NSLog (@ "* * * * result =%@", result);

if (!result)

{

[self cleanup:[nsstring stringwithformat:@ "Upload error: %@", [Error Localizeddescription]];

Return

}

Return Results

NSString *outstring = [[[nsstring alloc] initwithdata:result encoding:nsutf8stringencoding] Autorelease];

NSLog (@ "* * * * * * outstring =%@", outstring);

[self cleanup:outstring];

}

@end

Ext: iOS image File upload code