iOS開發 AFNetworking2.5的使用

官方下載地址：https://github.com/AFNetworking/AFNetworking

此文章是基於AFNetworking2.5版本的，需要看AFNetworking2.0版本的請看上一篇文章：AFNetworking2.0使用

1.檢測網絡狀態

+ (void)netWorkStatus
{
    /**
     AFNetworkReachabilityStatusUnknown          = -1,  // 未知
     AFNetworkReachabilityStatusNotReachable     = 0,   // 無連接
     AFNetworkReachabilityStatusReachableViaWWAN = 1,   //
蜂窩網 2G、3G、4G
     AFNetworkReachabilityStatusReachableViaWiFi = 2,   // WiFi
     */
    // 如果要檢測網絡狀態的變化,必須用檢測管理器的單例的startMonitoring
    [[AFNetworkReachabilityManager sharedManager] startMonitoring];

    // 檢測網絡連接的單例,網絡變化時的回調方法
    [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        NSLog(@"%ld", status);
    }];
}

2.JSON方式獲取數據

+ (void)JSONDataWithUrl:(NSString *)url success:(void (^)(id json))success fail:(void (^)())fail;
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    NSDictionary *dict = @{@"format": @"json"};
    // 網絡訪問是異步的,回調是主線程的,因此程序員不用管在主線程更新UI的事情
    [manager GET:url parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {
        if (success) {
            success(responseObject);
        }
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"%@", error);
        if (fail) {
            fail();
        }
    }];
}

3.xml方式獲取數據

+ (void)XMLDataWithUrl:(NSString *)urlStr success:(void (^)(id xml))success fail:(void (^)())fail
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

    // 返回的數據格式是XML
    manager.responseSerializer = [AFXMLParserResponseSerializer serializer];

    NSDictionary *dict = @{@"format": @"xml"};

    // 網絡訪問是異步的,回調是主線程的,因此程序員不用管在主線程更新UI的事情
    [manager GET:urlStr parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {
        if (success) {
            success(responseObject);
        }

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"%@", error);
        if (fail) {
            fail();
        }
    }];
}

4.post提交json數據

+ (void)postJSONWithUrl:(NSString *)urlStr parameters:(id)parameters success:(void (^)(id responseObject))success fail:(void (^)())fail
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    // 設置請求格式
    manager.requestSerializer = [AFJSONRequestSerializer serializer];
    // 設置返回格式
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    [manager POST:urlStr parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
//        NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
        if (success) {
            success(responseObject);
        }
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"%@", error);
        if (fail) {
            fail();
        }
    }];

}

5.下載文件

+ (void)sessionDownloadWithUrl:(NSString *)urlStr success:(void (^)(NSURL *fileURL))success fail:(void (^)())fail
{
    NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];

    NSString *urlString = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

    NSURL *url = [NSURL URLWithString:urlString];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];

    NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
        // 指定下載文件保存的路徑
        //        NSLog(@"%@ %@", targetPath, response.suggestedFilename);
        // 將下載文件保存在緩存路徑中
        NSString *cacheDir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
        NSString *path = [cacheDir stringByAppendingPathComponent:response.suggestedFilename];

        // URLWithString返回的是網絡的URL,如果使用本地URL,需要注意
//        NSURL *fileURL1 = [NSURL URLWithString:path];
        NSURL *fileURL = [NSURL fileURLWithPath:path];

//        NSLog(@"== %@ |||| %@", fileURL1, fileURL);
        if (success) {
            success(fileURL);
        }

        return fileURL;
    } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
        NSLog(@"%@ %@", filePath, error);
        if (fail) {
            fail();
        }
    }];

    [task resume];
}

6.文件上傳－自定義上傳文件名

+ (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL fileName:(NSString *)fileName fileType:(NSString *)fileTye success:(void (^)(id responseObject))success fail:(void (^)())fail
{
    // 本地上傳給服務器時,沒有確定的URL,不好用MD5的方式處理
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    //@"http://localhost/demo/upload.php"
    [manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

//        NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"頭像1.png" withExtension:nil];

        // 要上傳保存在服務器中的名稱
        // 使用時間來作爲文件名 2014-04-30 14:20:57.png
        // 讓不同的用戶信息,保存在不同目錄中
//        NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
//        // 設置日期格式
//        formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
//        NSString *fileName = [formatter stringFromDate:[NSDate date]];

        //@"image/png"
        [formData appendPartWithFileURL:fileURL name:@"uploadFile" fileName:fileName mimeType:fileTye error:NULL];

    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        if (success) {
            success(responseObject);
        }
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        if (fail) {
            fail();
        }
    }];
}

7.文件上傳－隨機生成文件名

+ (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL success:(void (^)(id responseObject))success fail:(void (^)())fail
{
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    // AFHTTPResponseSerializer就是正常的HTTP請求響應結果:NSData
    // 當請求的返回數據不是JSON,XML,PList,UIImage之外,使用AFHTTPResponseSerializer
    // 例如返回一個html,text...
    //
    // 實際上就是AFN沒有對響應數據做任何處理的情況
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

    // formData是遵守了AFMultipartFormData的對象
    [manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

        // 將本地的文件上傳至服務器
//        NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"頭像1.png" withExtension:nil];

        [formData appendPartWithFileURL:fileURL name:@"uploadFile" error:NULL];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
//        NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
//
//        NSLog(@"完成 %@", result);
        if (success) {
            success(responseObject);
        }
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"錯誤 %@", error.localizedDescription);
        if (fail) {
            fail();
        }
    }];
}