AFNetworking是一个非常流行的网络库，适用于iOS以及Mac OS X，具有良好的架构，丰富的api，以及模块化化构建方式，使得使用起来非常轻松。
使用CocoaPods安装
Podfile
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| platform :ios, '7.0'
pod "AFNetworking", "~> 2.0"
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环境要求
Xcode 5、iOS 6.0及以上、Mac OS 10.8以上
用法
AFHTTPRequestOperationManager
AFHTTPRequestOperationManager封装了Web应用程式HTTP通信的功能，包括编辑请求、响应序列化、网络可达性监控和安全系，以及请求管理的常见模式。
GET请求
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| AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://example.com/resources.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
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POST请求
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| AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"foo":@"bar"};
[manager GET:@"http://example.com/resources.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
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POST多部分请求
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| AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters = @{@"foo":@"bar"};
NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
[manager POST:@"http://example.com/resources.json" parameters:parametes construtingBodyWithBlock:^(id<AFMultipartFormData> formData){
[formData appendPartWithFileUrl:filePath name:@"image" error:nil];
} success:^(AFHTTPRequestOperation *operation,id responseObject){
NSLog(@"Success:%@",responseObject);
}failure:^(AFHTTPRequestOperation *operation,NSError *error)){
NSLog(@"Error:%@",error);
}];
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AFURLSessionManager
AFURLSessionManager根据指定的NSURLSessionConfiguration对象创建、管理NSURLSession，实现了<NSURLSessionTaskDelegate>，<NSURLSessionDataDelegate>，<NSURLSessionDownloadDelegate>和<NSURLSessionDelegate>委托。
创建下载任务
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| NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:@"http://example.com/download.zip"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
NSURL *documentsDirectoryPath = [NSURL fileURLWithPath:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]];
return [documentsDirectoryPath URLByAppendingPathComponent:[response suggestedFilename]];
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
NSLog(@"File downloaded to: %@", filePath);
}];
[downloadTask resume];
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创建上传任务
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| NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromFile:filePath progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
} else {
NSLog(@"Success: %@ %@", response, responseObject);
}
}];
[uploadTask resume];
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创建上传任务多任务请求
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| NSMutableURLRequest *requst = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileURL:[NSURL fileURLWithPath:@"file://path/to/image.jpg"] name:@"file" fileName:@"filename.jpg" mimeType:@"image/jpeg" error:nil];
}error:nil];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfigguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
NSProgress *progress = nil;
NSURLSessionUploadTask *uploadTask = [Manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response,id responseObject,NSError *error){
if(error){
NSLog(@"Error:%@",error);
}else{
NSLog(@"%@,%@",response,responseObject);
}
}];
[uploadTask resume];
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创建数据任务
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| NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURLSessionDataTask *dataTask = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
} else {
NSLog(@"%@ %@", response, responseObject);
}
}];
[dataTask resume];
[ dataTask 简历];
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请求序列化
创建序列化URL字符串
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| NSString * URLString = @"http://example.com";
NSDictionary * parmeters = @{@"foo":@"bar",@"baz":@[@1,@2,@3]};
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查询参数列表
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| [[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];
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POST http://example.com/
Content-Type: application/x-www-form-urlencoded
foo=bar&baz[]=1&baz[]=2&baz[]=3
JSON参数
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| [[AFJSONRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];
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POST http://example.com/
Content-Type: application/json
{"foo": "bar", "baz": [1,2,3]}
网络可达性管理
AFNetworkReachabilityManager监控网络的可达性。
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| [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
}];
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可达URL的主机
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| NSURL *baseURL = [NSURL URLWithString:@"http://example.com/"];
AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];
NSOperationQueue *operationQueue = manager.operationQueue;
[manager.reachabilityManager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
switch (status) {
case AFNetworkReachabilityStatusReachableViaWWAN:
case AFNetworkReachabilityStatusReachableViaWiFi:
[operationQueue setSuspended:NO];
break;
case AFNetworkReachabilityStatusNotReachable:
default:
[operationQueue setSuspended:YES];
break;
}
}];
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