AFNetwork是一個輕量級的網(wǎng)絡(luò)請求api類庫栓始。是以NSURLConnection, NSOperation和其他方法為基礎(chǔ)的。
Github:https://github.com/AFNetworking/AFNetworking/
下面這個例子是用來處理json請求的：
NSURL *url = [NSURL URLWithString:@"https://alpha-api.app.net/stream/0/posts/stream/global"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {
NSLog(@"App.net Global Stream: %@", JSON);
} failure:nil];
[operation start];
使用方法
1.下載AFNetwork，點擊下載
2.將文件夾名稱為AFNetworking拖入到你的工程項目即可
常見問題
AFNetworking作用都有哪些派歌？
NSURLConnection提供了+sendAsynchronousRequest:queue:completionHandler:和+sendAsynchronousRequest:queue:completionHandler: ，但是AFNetworking提供了更好的功能
＊AFURLConnectionOperation和它的子類繼承NSOperation的，允許請求被取消黍少，暫停/恢復(fù)和由NSOperationQueue進行管理。
＊AFURLConnectionOperation也可以讓你輕松得完成上傳和下載处面，處理驗證厂置，監(jiān)控上傳和下載進度，控制的緩存魂角。
＊AFHTTPRequestOperation和它得子類可以基于http狀態(tài)和內(nèi)容列下來區(qū)分是否成功請求了
＊AFNetworking可以將遠程媒體數(shù)據(jù)類型（NSData）轉(zhuǎn)化為可用的格式昵济，比如如JSON，XML或颊，圖像和plist砸紊。
＊AFHTTPClient提供了一個方便的網(wǎng)絡(luò)交互接口，包括默認頭囱挑，身份驗證醉顽，是否連接到網(wǎng)絡(luò)，批量處理操作平挑，查詢字符串參數(shù)序列化游添，已經(jīng)多種表單請求
＊UIImageView+ AFNetworking增加了一個方便的方法來異步加載圖像。AFNetworking是否支持緩存通熄？
可以唆涝，NSURLCache及其子類提供了很多高級接口用于處理緩存
如果你想將緩存存儲再磁盤，推薦使用SDURLCache如何使用AFNetworking上傳一個文件唇辨？
NSData *imageData = UIImagePNGRepresentation(image);
NSURLRequest *request = [client multipartFormRequestWithMethod:@"POST" path:@"/upload" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData> formData) {
[formData appendPartWithFileData:imageData mimeType:@"image/png" name:@"avatar"];
}];
4 .如何使用AFNetworking下載一個文件廊酣？
先創(chuàng)建一個AFURLConnectionOperation對象，然后再使用它的屬性outputStream進行處理
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:@"download.zip" append:NO];
- 如何解決：SystemConfiguration framework not found in project
請導(dǎo)入：
#import <SystemConfiguration/SystemConfiguration.h>
#import <MobileCoreServices/MobileCoreServices.h>
- 當(dāng)應(yīng)用程序退出時赏枚，如何保持持續(xù)的請求亡驰？
AFURLConnectionOperation有一個叫setShouldExecuteAsBackgroundTaskWithExpirationHandler:的方法用于處理在應(yīng)用程序進入后臺后，進行持續(xù)的請求
[self setShouldExecuteAsBackgroundTaskWithExpirationHandler:^{
}];
一些實例
- XML 請求
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];
- 圖片請求：
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"]];
- 圖片上傳處理饿幅，監(jiān)測上傳狀態(tài)：
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];
[operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);
}];
[operation start];
4.在線流媒體請求
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://localhost:8080/encode"]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.inputStream = [NSInputStream inputStreamWithFileAtPath:[[NSBundle mainBundle] pathForResource:@"large-image" ofType:@"tiff"]];
operation.outputStream = [NSOutputStream outputStreamToMemory];
[operation start];
