iOS AFNetworking 简单使用

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GET 请求

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager]; [manager GET:URL parameters:nil progress:^(NSProgress * _Nonnull downloadProgress) {  }      success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {   NSLog(@"这里打印请求成功要做的事");  }failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull   error) {  NSLog(@"%@",error);  //这里打印错误信息}];

POST 请求

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];NSMutableDictionary *parameters = @{@"":@"",@"":@""};[manager POST:URL parameters:parameters progress:^(NSProgress * _Nonnull uploadProgress) {} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {  NSLog(@"这里打印请求成功要做的事");  } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {  NSLog(@"%@",error);  //这里打印错误信息 }];

AFN 3.0 下载

/** *  AFN3.0 下载 */- (void)downLoad{    //1.创建管理者对象    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];    //2.确定请求的URL地址    NSURL *url = [NSURL URLWithString:@""];    //3.创建请求对象    NSURLRequest *request = [NSURLRequest requestWithURL:url];    //下载任务    NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) {        //打印下下载进度        NSLog(@"%lf",1.0 * downloadProgress.completedUnitCount / downloadProgress.totalUnitCount);    } destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {        //下载地址        NSLog(@"默认下载地址:%@",targetPath);        //设置下载路径，通过沙盒获取缓存地址，最后返回NSURL对象        NSString *filePath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)lastObject];        return [NSURL URLWithString:filePath];    } completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {        //下载完成调用的方法        NSLog(@"下载完成：");        NSLog(@"%@--%@",response,filePath);    }];    //开始启动任务    [task resume];}

AFN 3.0 上传

/** *  AFN 3.0 上传 *      有两种方式 *          upLoad1 和 upLoad2 *///第一种方法是通过工程中的文件进行上传- (void)upLoad1{    //1。创建管理者对象    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];    //2.上传文件    NSDictionary *dict = @{@"username":@"1234"};    NSString *urlString = @"22222";    [manager POST:urlString parameters:dict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {        //上传文件参数        //UIImage *iamge = [UIImage imageNamed:@"123.png"];        //NSData *data = UIImagePNGRepresentation(iamge);        //这个就是参数        //[formData appendPartWithFileData:data name:@"file" fileName:@"123.png" mimeType:@"image/png"];                //上传多个任务        NSArray * imagePickerArray = [params objectForKey:ImageKey];                for(NSInteger i = 0; i < imagePickerArray.count; i++)        {            NSData * imageData= UIImageJPEGRepresentation([imagePickerArray objectAtIndex:i], .5);            // 上传的参数名            NSString * Name = [NSString stringWithFormat:@"%@%zi", @"mypicture", i+1];            // 上传filename            NSString * fileName = [NSString stringWithFormat:@"%@.jpg", Name];            [formData appendPartWithFileData:imageData name:Name fileName:fileName mimeType:@"image/jpeg"];        }    } progress:^(NSProgress * _Nonnull uploadProgress) {        //打印下上传进度        NSLog(@"%lf",1.0 *uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {        //请求成功        NSLog(@"请求成功：%@",responseObject);    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {        //请求失败        NSLog(@"请求失败：%@",error);    }];}//第二种是通过URL来获取路径，进入沙盒或者系统相册等等- (void)upLoda2{    //1.创建管理者对象    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];    //2.上传文件    NSDictionary *dict = @{@"username":@"1234"};    NSString *urlString = @"22222";    [manager POST:urlString parameters:dict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {        [formData appendPartWithFileURL:[NSURL fileURLWithPath:@"文件地址"] name:@"file" fileName:@"1234.png" mimeType:@"application/octet-stream" error:nil];    } progress:^(NSProgress * _Nonnull uploadProgress) {        //打印下上传进度        NSLog(@"%lf",1.0 *uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {        //请求成功        NSLog(@"请求成功：%@",responseObject);    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {        //请求失败        NSLog(@"请求失败：%@",error);    }];}

检测当前网络状态（网络监听）

- (void)AFNetworkStatus{    //1.创建网络监测者    AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];    /*枚举里面四个状态  分别对应 未知 无网络 数据 WiFi     typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {         AFNetworkReachabilityStatusUnknown          = -1,      未知         AFNetworkReachabilityStatusNotReachable     = 0,       无网络         AFNetworkReachabilityStatusReachableViaWWAN = 1,       蜂窝数据网络         AFNetworkReachabilityStatusReachableViaWiFi = 2,       WiFi     };     */    [manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {        //这里是监测到网络改变的block  可以写成switch方便        //在里面可以随便写事件        switch (status) {            case AFNetworkReachabilityStatusUnknown:                NSLog(@"未知网络状态");                break;            case AFNetworkReachabilityStatusNotReachable:                NSLog(@"无网络");                break;            case AFNetworkReachabilityStatusReachableViaWWAN:                NSLog(@"蜂窝数据网");                break;            case AFNetworkReachabilityStatusReachableViaWiFi:                NSLog(@"WiFi网络");                break;            default:                break;        }    }] ;}

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