iOS Upload Image Method class

iphone development encountered uploading picture problems, find more information, finally encapsulated a class, please point out the code as follows

  requestpostuploadhelper.h//  demodes////  Created by Zhang Hao on 13-5-8.//  Copyright (c) 2013 Zhang Hao. All rights reserved.//#import <Foundation/Foundation.h> @interface requestpostuploadhelper:nsobject/** *post Submit and can upload pictures currently only support single */+ (NSString *) Postrequestwithurl: (nsstring *) URL  //In                            Postparems: (Nsmutabledictionary *) Postparems//In submit parameter according to set                            Picfilepath: (NSString *) Picfilepath  //In upload picture path                            picfilename: (NSString *) Picfilename;  In Upload image name/** * Hair repair picture size */+ (UIImage *) Imagewithimagesimple: (uiimage*) Image scaledtosize: (cgsize) newsize;/** * Save Picture */+ (NSString *) SaveImage: (UIImage *) tempimage withname: (NSString *) imagename;/** * Generate GUID */+ (NSString *) generateuuidstring; @end

requestpostuploadhelper.m//demodes////Created by Zhang Hao on 13-5-8.//Copyright (c) 2013 Zhang Hao. All rights reserved.//#import "RequestPostUploadHelper.h" @implementation requestpostuploadhelperstatic NSString * Const FORM_FLE_INPUT = @ "file"; + (NSString *) Postrequestwithurl: (nsstring *) URL//in Postparems: (                     Nsmutabledictionary *) Postparems//In Picfilepath: (NSString *) Picfilepath//In  Picfilename: (NSString *) picfilename;    in{nsstring *twitterfon_form_boundary = @ "0xKhTmLbOuNdArY";                                                           Request nsmutableurlrequest* request = [Nsmutableurlrequest Requestwithurl:[nsurl Urlwithstring:url] based on URL initialization                                                       Cachepolicy:nsurlrequestreloadignoringlocalcachedata    TIMEOUTINTERVAL:10];    Dividing line--aab03x nsstring *mpboundary=[[nsstring alloc]initwithformat:@ "--%@", twitterfon_form_boundary]; Terminator aab03x--NSString *endmpboundary=[[nsstring alloc]initwithformat:@ "%@--", mpboundary];    Get the image data nsdata* data;        if (picfilepath) {UIImage *image=[uiimage imagewithcontentsoffile:picfilepath];            Determine if the picture is a PNG file if (uiimagepngrepresentation (image)) {//returns to a PNG image.        data = uiimagepngrepresentation (image);            }else {//return to JPEG image.        data = uiimagejpegrepresentation (image, 1.0);    }}//http the body string nsmutablestring *body=[[nsmutablestring alloc]init];        The collection of all keys for the collection of parameters Nsarray *keys= [Postparems AllKeys];              Traverse keys for (int i=0;i<[keys count];i++) {//Get current key nsstring *key=[keys objectatindex:i];        Add dividing line, newline [body appendformat:@ "%@\r\n", mpboundary];        Add field name, change 2 lines [Body appendformat:@ "content-disposition:form-data; name=\"%@\ "\r\n\r\n", key];                 Add the value of the field [body appendformat:@ "%@\r\n", [Postparems Objectforkey:key]]; NSLog (@ "Add Value of field ==%@", [Postparems Objectforkey:key]);            } if (Picfilepath) {////add dividing line, newline [body appendformat:@ "%@\r\n", mpboundary]; Declare pic field, file name boris.png [body appendformat:@ "content-disposition:form-data; name=\"%@\ "; filename=\"%@\ "\ r \ n", form        _fle_input,picfilename]; Declare the format of the uploaded file [body appendformat:@ "content-type:image/jpge,image/gif, Image/jpeg, Image/pjpeg, image/pjpeg\r\n\r\n"]    ;    }//Declaration terminator:--aab03x--nsstring *end=[[nsstring alloc]initwithformat:@ "\r\n%@", endmpboundary];    Declaration Myrequestdata, used to put the HTTP body nsmutabledata *myrequestdata=[nsmutabledata data];    Converts the body string to UTF8 format binary [myrequestdata appenddata:[body datausingencoding:nsutf8stringencoding];    if (Picfilepath) {//Add the data of image to [Myrequestdata Appenddata:data];      }//Add terminator--aab03x--[Myrequestdata appenddata:[end datausingencoding:nsutf8stringencoding]; Set the value of Content-type in Httpheader nsstring *content=[[nsstring ALLOC]INITWITHFormat:@ "Multipart/form-data;    boundary=%@ ", twitterfon_form_boundary];    Set httpheader [Request Setvalue:content forhttpheaderfield:@ "Content-type"]; Set content-length [Request Setvalue:[nsstring stringwithformat:@ "%d", [Myrequestdata Length]] forhttpheaderfield:@ "    Content-length "];    Set HTTP body [request Sethttpbody:myrequestdata];            HTTP method [Request sethttpmethod:@ "POST"];    Nshttpurlresponse *urlresponese = nil;    Nserror *error = [[Nserror alloc]init]; nsdata* resultdata = [nsurlconnection sendsynchronousrequest:request returningresponse:&urlresponese error:&    ERROR];    nsstring* result= [[NSString alloc] Initwithdata:resultdata encoding:nsutf8stringencoding];        if ([Urlresponese StatusCode] >=200&&[urlresponese statuscode]<300) {NSLog (@ "Return results =====%@", result);    return result; } return nil;} /** * Hair repair picture size */+ (UIImage *) Imagewithimagesimple: (uiimage*) Image scaledtosize: (cgsize) newsize{newsize.height=image.size.height* (Newsize.width/image.size.width);    Uigraphicsbeginimagecontext (newSize);    [Image drawinrect:cgrectmake (0, 0, Newsize.width, newsize.height)];    UIImage *newimage=uigraphicsgetimagefromcurrentimagecontext ();    Uigraphicsendimagecontext (); return newimage;}        /** * Save Picture */+ (NSString *) SaveImage: (UIImage *) tempimage withname: (NSString *) imagename{nsdata* imageData;        Determine if the picture is not a PNG file if (uiimagepngrepresentation (tempimage)) {//returns as a PNG image.    ImageData = Uiimagepngrepresentation (tempimage);        }else {//return to JPEG image.    ImageData = UIImageJPEGRepresentation (Tempimage, 1.0);        } nsarray* paths = Nssearchpathfordirectoriesindomains (Nsdocumentdirectory,nsuserdomainmask,yes);        nsstring* documentsdirectory = [Paths objectatindex:0];    nsstring* fullpathtofile = [Documentsdirectory stringbyappendingpathcomponent:imagename];    Nsarray *nameary=[fullpathtofile componentsseparatedbystring:@ "/"]; NSLog (@ "===fullpathtofile===%@ ", fullpathtofile);        NSLog (@ "===filename===%@", [Nameary objectatindex:[nameary count]-1]);    [ImageData Writetofile:fullpathtofile Atomically:no]; return fullpathtofile;} /** * Generate GUID */+ (NSString *) generateuuidstring{//Create a new UUID which you own cfuuidref uuid = Cfuuidcreate (KC        Fallocatordefault); Create a new Cfstringref (toll-free bridged to nsstring)//So you own nsstring *uuidstring = (NSString *) Cfuui        Dcreatestring (Kcfallocatordefault, UUID);        Transfer ownership of the string//to the autorelease pool [uuidstring autorelease];        Release the UUID cfrelease (UUID); return uuidstring;} @end

DEMO

  uploadviewcontroller.h//  demodes////  Created by Zhang Hao on 13-5-6.//  Copyright (c) 2013 Zhang Hao. All rights reserved.//#import <UIKit/UIKit.h> @interface uploadviewcontroller:uiviewcontroller< uiactionsheetdelegate,uiimagepickercontrollerdelegate>-(ibaction) Onclickuploadpic: (ID) sender;-(void) snapimage;//photo-(void) pickimage;//from the album-(UIImage *) Imagewithimagesimple: (uiimage*) Image scaledtosize: (cgsize) newsize;-(void) SaveImage: (UIImage *) tempimage withname: (NSString *) imagename;-(ibaction) Onpostdata: (ID) sender;-( NSString *) generateuuidstring; @end

uploadviewcontroller.m//demodes////Created by Zhang Hao on 13-5-6.//Copyright (c) 2013 Zhang Hao. All rights reserved.//#import "UploadViewController.h" #import "RequestPostUploadHelper.h" @interface Uploadviewcontroller () @endNSString *[email protected] ""; @implementation uploadviewcontroller-(ID) Initwithnibname: (NSString *) Nibnameornil Bundle: (NSBundle *) nibbundleornil{self = [Super Initwithnibname:    Nibnameornil Bundle:nibbundleornil]; if (self) {//Custom initialization} return to self;}    -(void) viewdidload{[Super Viewdidload]; Do any additional setup after loading the view from its nib.}    -(void) didreceivememorywarning{[Super didreceivememorywarning]; Dispose of any resources the can be recreated.} -(Ibaction) Onclickuploadpic: (ID) Sender {uiactionsheet *menu=[[uiactionsheet alloc] initwithtitle:@ "Upload picture" delegate:    Self cancelbuttontitle:@ "Cancel" destructivebuttontitle:nil otherbuttontitles:@ "photo upload" @ "Upload from album", Nil]; Menu.actionsheetstyle=uiactionSheetstyleblacktranslucent;    [Menu ShowInView:self.view]; }-(void) Actionsheet: (Uiactionsheet *) Actionsheet Clickedbuttonatindex: (nsinteger) buttonindex{NSLog (@ "    33333333333333 ");        if (buttonindex==0) {[Self snapImage];    NSLog (@ "111111111111");        }else if (buttonindex==1) {[Self pickimage];    NSLog (@ "222222222222"); } [Actionsheet release];}    Photo-(void) snapimage{Uiimagepickercontroller *ipc=[[uiimagepickercontroller alloc] init];    Ipc.sourcetype=uiimagepickercontrollersourcetypecamera;    ipc.delegate=self;    Ipc.allowsediting=no;    [Self PRESENTMODALVIEWCONTROLLER:IPC animated:yes];    }//from the album-(void) pickimage{Uiimagepickercontroller *ipc=[[uiimagepickercontroller alloc] init];    Ipc.sourcetype=uiimagepickercontrollersourcetypephotolibrary;    ipc.delegate=self;    Ipc.allowsediting=no; [Self PRESENTMODALVIEWCONTROLLER:IPC animated:yes];} -(void) Imagepickercontroller: (Uiimagepickercontroller *) Picker DidfinishpickingmediaWithinfo: (nsdictionary *) info{UIImage *img=[info objectforkey:@ "Uiimagepickercontrolleroriginalimage"]; if (Picker.sourcetype==uiimagepickercontrollersourcetypecamera) {//Uiimagewritetosavedphotosalbum (Img,nil,nil,    NIL);    } UIImage *newimg=[self imagewithimagesimple:img scaledtosize:cgsizemake (300, 300)];    [Self saveimage:newimg withname:[nsstring stringwithformat:@ '%@%@ ', [self generateuuidstring],@ '. jpg]];    [Self dismissmodalviewcontrolleranimated:yes]; [Picker release];} -(UIImage *) Imagewithimagesimple: (uiimage*) Image scaledtosize: (cgsize) newsize{newsize.height=image.size.height* (    Newsize.width/image.size.width);    Uigraphicsbeginimagecontext (newSize);    [Image drawinrect:cgrectmake (0, 0, Newsize.width, newsize.height)];    UIImage *newimage=uigraphicsgetimagefromcurrentimagecontext ();    Uigraphicsendimagecontext (); return newimage;} -(void) SaveImage: (UIImage *) tempimage withname: (NSString *) imagename{NSLog (@ "===tmp_upload_img_path===%@", TMP_upload_img_path);        nsdata* imageData = uiimagepngrepresentation (tempimage);        nsarray* paths = Nssearchpathfordirectoriesindomains (Nsdocumentdirectory,nsuserdomainmask,yes);        nsstring* documentsdirectory = [Paths objectatindex:0]; Now we get the full path to the file nsstring* fullpathtofile = [Documentsdirectory stringbyappendingpathcompone        Nt:imagename];    And then we write it out tmp_upload_img_path=fullpathtofile;    Nsarray *nameary=[tmp_upload_img_path componentsseparatedbystring:@ "/"];    NSLog (@ "===new fullpathtofile===%@", fullpathtofile);        NSLog (@ "===new filename===%@", [Nameary objectatindex:[nameary count]-1]);    [ImageData Writetofile:fullpathtofile Atomically:no];    }-(ibaction) Onpostdata: (ID) Sender {nsmutabledictionary * dir=[nsmutabledictionary dictionarywithcapacity:7];    [dir setvalue:@ "Save" forkey:@ "M"];    [dir setvalue:@ "ios upload try" forkey:@ "title"];    [dir setvalue:@ "ios upload try" forkey:@ "content"]; [Dir setvalue:@ "forkey:@" Clubuserid "];    [dir setvalue:@ "1" forkey:@ "Clubsectionid"];    [dir setvalue:@ "192.168.0.26" forkey:@ "IP"];    [dir setvalue:@ "asfdfasdfasdfasdfasdfasd=" forkey:@ "Sid"];    NSString *[email protected] "Http://192.168.0.26:8090/api/club/topicadd.do?m=save";    NSLog (@ "======= upload"); if ([Tmp_upload_img_path isequaltostring:@ "]) {[Requestpostuploadhelper postrequestwithurl:url postParems:dir PicFi    Lepath:nil Picfilename:nil];        }else{NSLog (@ "icon upload");       Nsarray *nameary=[tmp_upload_img_path componentsseparatedbystring:@ "/"]; [Requestpostuploadhelper postrequestwithurl:url postparems:dir Picfilepath:tmp_upload_img_path picFileName:[    Nameary objectatindex:[nameary count]-1];; }}-(NSString *) generateuuidstring{//Create a new UUID which you own cfuuidref uuid = Cfuuidcreate (Kcfallocatorde        fault); Create a new Cfstringref (toll-free bridged to nsstring)//So you own nsstring *uuidstring = (NSString *) Cfuui DcreatesTring (Kcfallocatordefault, UUID);        Transfer ownership of the string//to the autorelease pool [uuidstring autorelease];        Release the UUID cfrelease (UUID); return uuidstring;} @end

Original: http://www.cnblogs.com/skyblue/archive/2013/05/08/3067108.html

iOS Upload Image Method class