Sync requests and asynchronous requests for ASIHTTPRequest in iOS

1. First join the ASI Open Source Library

2.

WebImageView.h

#import <UIKit/UIKit.h>

#import "ASIHTTPRequest.h"

@interface Webimageview: Uiimageview <asihttprequestdelegate>

-(void) Setimageurl: (nsurl *) URL;

@end

webimageview.m

#import "WebImageView.h"

#import"ASIHTTPRequest.h"

@implementation Webimageview

-(ID) initWithFrame: (cgrect) frame

{

self = [superinitwithframe: frame];

if (self) {

//initialization code

}

returnself;

}

-(void) Setimageurl: (nsurl *) url{

// sync request

//[self Synchronous:url];

// asynchronous Request

[SelfAsynchronous: url];

}

// sync request

-(void) Synchronous: (nsurl *) url{

asihttprequest *request = [asihttprequestrequestwithurl : url];

[Request Setrequestmethod:@ "GET"];

[Request settimeoutseconds:];

// Set the request header

//[request setrequestheaders:<# (nsmutabledictionary *) #>];

// set cookies

//[request setrequestcookies:<# (Nsmutablearray *) #>];

// send a sync request

[Request startsynchronous];

nserror *error = [requesterror];

if (Error = =Nil) {

// get the requested data

nsdata *data = Request. responsedata;

UIImage *image = [UIImageimagewithdata:d ATA];

Self. image = image;

}Else{

NSLog (@ " Network request failed %@", error);

}

}

// Asynchronous request

-(void) Asynchronous: (nsurl *) url{

asihttprequest *request = [asihttprequestrequestwithurl: url];

[Request Setrequestmethod:@ "GET"];

[Request settimeoutseconds:];

Request. delegate =self;

[Request startasynchronous];

}

#pragma mark ASIHTTPRequest Delegate implementation of the Protocol method------asynchronous request ---------

// Request data completion

-(void) requestfinished: (asihttprequest *) request{

nsdata *data = Request. ResponseData;

Self. image = [UIImageimagewithdata:d ATA];

}

// request failed

-(void) requestfailed: (asihttprequest *) request{

nserror *error = [requesterror];

NSLog (@ " Network request failed %@", error);

}

@end

3, the use of block mode of network asynchronous request, at this time do not need to implement delegate

// Asynchronous request

-(void) Asynchronous: (nsurl *) url{

asihttprequest *request = [asihttprequestrequestwithurl: url];

[Request Setrequestmethod:@ "GET"];

[Request settimeoutseconds:];

// set block after network request is complete do not need delegate at this time

[Request Setcompletionblock: ^{

nsdata *data = Request. ResponseData;

Self. image = [UIImageimagewithdata:d ATA];

}];

// set block for request failed call

[RequestSetfailedblock: ^{

nserror *error = [requesterror];

NSLog (@ " Network request failed %@", error);

}];

[Request startasynchronous];

}