AFNetworking

Posted on Edited on

https://github.com/AFNetworking/AFNetworking

AFNetworking 是一款备受喜爱的iOS端和Mac OS X端的网络库。它构建于 Foundation URL Loading System之上, 对cocoa的网络层做了扩展。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。

Swift可以使用Alamofire

安装

使用CocoaPods安装

在Podfile里面加入

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source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '8.0'

pod 'AFNetworking', '~> 3.0'

使用Carthage安装

在Cartfile中加入:

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github "AFNetworking/AFNetworking" ~> 3.0

3.0版本只支持iOS 7、OS X 10.9以上的版本

使用

导入头文件

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#import <AFNetworking.h>

检查网络是否连接

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[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
    NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
    
}];

[[AFNetworkReachabilityManager sharedManager] startMonitoring];

其中status表示网络状态,通过Wi-Fi链接返回2，用手机流量返回1，无连接为0，为止状态为－1 。

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typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {
    AFNetworkReachabilityStatusUnknown          = -1,
    AFNetworkReachabilityStatusNotReachable     =  0,
    AFNetworkReachabilityStatusReachableViaWWAN =  1,
    AFNetworkReachabilityStatusReachableViaWiFi =  2,
};

请求JSON数据

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NSURL *URL = [NSURL URLWithString:@"http://example.com"];
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
[manager GET:URL.absoluteString parameters:nil success:^(NSURLSessionTask *task, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
    
    
    //如果穿回来的数据带有数组可以这样
    //NSArray *data = [responseObject objectForKey:@"data"];
    //NSString *name = [data[0] objectForKey:@"name"];
    //NSLog(@"name: %@", name);
} failure:^(NSURLSessionTask *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

其中parameters可以用NSDictionary，如

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NSDictionary *parameters = @{@"foo": @"bar", @"baz": @[@1, @2, @3]};

post数据的话将 GET改为POST就可以了～

下载文件

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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 *documentsDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSDocumentDirectory inDomain:NSUserDomainMask appropriateForURL:nil create:NO error:nil];
    return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
    NSLog(@"File downloaded to: %@", filePath);
}];
[downloadTask resume];

上传文件

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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];

从2.0迁移到3.0的方法，官方文档