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文章目录
  1. 1. 使用CocoaPods安装
    1. 1.1. Podfile
  2. 2. 环境要求
  3. 3. 用法
    1. 3.1. AFHTTPRequestOperationManager
    2. 3.2. AFURLSessionManager
    3. 3.3. 请求序列化
    4. 3.4. JSON参数
    5. 3.5. 网络可达性管理


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"

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);
}];

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);
}];

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);
}];

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];

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];

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];

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];

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]};

查询参数列表

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[[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:URLString parameters:parameters];

 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];
  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));
}];

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;
    }
}];

文章目录
  1. 1. 使用CocoaPods安装
    1. 1.1. Podfile
  2. 2. 环境要求
  3. 3. 用法
    1. 3.1. AFHTTPRequestOperationManager
    2. 3.2. AFURLSessionManager
    3. 3.3. 请求序列化
    4. 3.4. JSON参数
    5. 3.5. 网络可达性管理