iOS开发——AFNetworking框架使用详解

古城微笑少年丶 2022-08-22 13:20 224阅读 0赞

AFNetworking is a delightful networking library for iOS and Mac OS X.It’s built on top of the Foundation URL Loading System, extending the powerful high-level networking abstractions built into Cocoa. It has a modular architecture with well-designed, feature-rich APIs that are a joy to use.

AFNetworking是一个基于iOS和Mac OS X的而且备受人们喜爱的网络类库。它建立在URL 装载系统框架的顶层，内置在Cocoa里，扩展了强有力的高级网络抽象。拥有良好设计的模块架构和丰富的功能的它使用起来很愉悦。

下载链接：[https://github.com/AFNetworking/AFNetworking][https_github.com_AFNetworking_AFNetworking]

使用方法：  
1.GET请求

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);
    }];

2.POST请求

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    NSDictionary *parameters = @{@"foo": @"bar"};
    [manager POST:@"http://example.com/resources.json" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"JSON: %@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

3.POST Multi-Part Request

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:parameters constructingBodyWithBlock:^(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);
    }];

4.创建一个下载任务

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];

5.创建一个上传任务

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];

6.创建一个上传文件任务并显示进度

NSMutableURLRequest *request = [[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] initWithSessionConfiguration:[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];

7.创建一个数据流任务

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];

8.获取网络状态

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

9.HTTP Manager Reachability（可达性）

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;
        }
    }];
    
    [manager.reachabilityManager startMonitoring];

10.AFHTTPRequestOperation的GET请求（AFHTTPRequestOperationManager通常是最好的去请求的方式，但是AFHTTPRequestOpersion也能够单独使用）

NSURL *URL = [NSURL URLWithString:@"http://example.com/resources/123.json"];
    NSURLRequest *request = [NSURLRequest requestWithURL:URL];
    AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    op.responseSerializer = [AFJSONResponseSerializer serializer];
    [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"JSON: %@", responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];
    [[NSOperationQueue mainQueue] addOperation:op];

11.Batch of Operations

NSMutableArray *mutableOperations = [NSMutableArray array];
    for (NSURL *fileURL in filesToUpload) {
        NSURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
            [formData appendPartWithFileURL:fileURL name:@"images[]" error:nil];
        }];
    
        AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    
        [mutableOperations addObject:operation];
    }
    
    NSArray *operations = [AFURLConnectionOperation batchOfRequestOperations:@[...] progressBlock:^(NSUInteger numberOfFinishedOperations, NSUInteger totalNumberOfOperations) {
        NSLog(@"%lu of %lu complete", numberOfFinishedOperations, totalNumberOfOperations);
    } completionBlock:^(NSArray *operations) {
        NSLog(@"All operations in batch complete");
    }];
    [[NSOperationQueue mainQueue] addOperations:operations waitUntilFinished:NO];

以上就是AFNetworking中一些常用的方法，AFNetworking请求到数据后，自动对请求到的数据进行解析，iOS中数据请求这方面AFNetworking是一个用起来很不错的第三方库。

[https_github.com_AFNetworking_AFNetworking]: https://github.com/AFNetworking/AFNetworking