首页 > ios > AFNetworking的学习

AFNetworking的学习

  AFNetworking是一个讨人喜欢的网络库,适用于iOS以及Mac OS X. 它构建于在NSURLConnection, NSOperation, 以及其他熟悉的Foundation技术之上. 它拥有良好的架构,丰富的api,以及模块化构建方式,使得使用起来非常轻松.例如,他可以使用很轻松的方式从一个url来得到json数据:

	
NSURL *url = [NSURL URLWithString:@"http://api.twitter.com/1/statuses/public_timeline.json"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];	
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {	
    NSLog(@"Public Timeline: %@", JSON);	
} failure:nil];	
[operation start];

综述

CORE:

  AFURLConnectionOperation:一个 NSOperation 实现了NSURLConnection 的代理方法.

HTTP Requests:

  AFHTTPRequestOperation:AFURLConnectionOperation的子类,当request使用的协议为HTTP和HTTPS时,它压缩了用于决定request是否成功的状态码和内容类型.
  AFJSONRequestOperation:AFHTTPRequestOperation的一个子类,用于下载和处理jason response数据.
  AFXMLRequestOperation:AFHTTPRequestOperation的一个子类,用于下载和处理xml response数据.
  AFPropertyListRequestOperation:AFHTTPRequestOperation的一个子类,用于下载和处理property list response数据.

HTTP CLIENT:

  AFHTTPClient:捕获一个基于http协议的网络应用程序的公共交流模式.包含:
使用基本的url相关路径来只做request,为request自动添加设置http headers.
使用http 基础证书或者OAuth来验证request
为由client制作的requests管理一个NSOperationQueue
从NSDictionary生成一个查询字符串或http bodies.
从request中构建多部件
自动的解析http response数据为相应的表现数据
在网络可达性测试用监控和响应变化.

IMAGES

  AFImageRequestOperation:一个AFHTTPRequestOperation的子类,用于下载和处理图片.
  UIImageView+AFNetworking:添加一些方法到UIImageView中,为了从一个URL中异步加载远程图片

例子程序

XML REQUEST

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://api.flickr.com/services/rest/?method=flickr.groups.browse&api_key=b6300e17ad3c506e706cb0072175d047&cat_id=34427469792%40N01&format=rest"]];	
AFXMLRequestOperation *operation = [AFXMLRequestOperation XMLParserRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, NSXMLParser *XMLParser) {	
  XMLParser.delegate = self;	
  [XMLParser parse];	
} failure:nil];	
[operation start];

IMAGE REQUEST

UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 100.0f)];	
[imageView setImageWithURL:[NSURL URLWithString:@"http://i.imgur.com/r4uwx.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder-avatar"]];

API CLIENT REQUEST

// AFGowallaAPIClient is a subclass of AFHTTPClient, which defines the base URL and default HTTP headers for NSURLRequests it creates	
[[AFGowallaAPIClient sharedClient] getPath:@"/spots/9223" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {	
    NSLog(@"Name: %@", [responseObject valueForKeyPath:@"name"]);	
    NSLog(@"Address: %@", [responseObject valueForKeyPath:@"address.street_address"]);	
} failure:nil];

FILE UPLOAD WITH PROGRESS CALLBACK

NSURL *url = [NSURL URLWithString:@"http://api-base-url.com"];	
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];	
NSData *imageData = UIImageJPEGRepresentation([UIImage imageNamed:@"avatar.jpg"], 0.5);	
NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {	
    [formData appendPartWithFileData:imageData name:@"avatar" fileName:@"avatar.jpg" mimeType:@"image/jpeg"];	
}];	
 	
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];	
[operation setUploadProgressBlock:^(NSInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {	
    NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);	
}];	
[operation start];

STREAMING REQUEST

	
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost:8080/encode"]];	
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];	
operation.inputStream = [NSInputStream inputStreamWithFileAtPath:[[NSBundle mainBundle] pathForResource:@"large-image" ofType:@"tiff"]];	
operation.outputStream = [NSOutputStream outputStreamToMemory];	
[operation start];
  1. moncler jacket 1月 14th, 2013 @ 17:20 | #1

    It is among my very own finest invests in ! I often draw that set having anything at all with no need of overdoing it. I’m certainly fairly rock-n-roll choice layout, i really in most cases draw {moncler romania|moncler boots for women|moncler sale uk|moncler online sale|moncler for kids in ny|moncler stores usa|moncler coats for men|moncler nantes jacket|moncler thierry coat|moncler jackets outerwear clothing having ‘destroyed’ trousers & some sort of arctic. They may be super wonderful, but one idea may be the sequins can get somewhat donned after some time. Still our bait start looking practically different & Concerning donned moncler sale uk rain, compacted snow, and a consistent time for The atlanta area. 🙂

评论提交中, 请稍候...

留言


可以使用的标签: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>
Trackbacks & Pingbacks ( 0 )
  1. 还没有 trackbacks