AFN的三次封装单例类 AFN的三次封装单例类

【AFN的三次封装单例类】用一个单例类将一些常用的网络请求进行了封装，主要包括post请求 get请求图片文件上传下载视频的断点续传等功能。
.h文件

#import #import typedef enum{ requestTypeGET, requestTypePOST }requestType; @interface NetworkManger : AFHTTPSessionManager//单例 + (instancetype)shareNetworkManger; +(id)allocWithZone:(NSZone *)zone; //第一次封装请求类型 - (void)requestWithType:(requestType)type URLString:(nonnull NSString *)URLString parameters:(nullable id)parameters progress:(nullable void (^)(NSProgress *_Nonnull downloadProgress))downloadProgress success:(nullable void (^)(NSURLSessionDataTask *_Nullable task, id _Nullable responseObject))success failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *_Nonnull error))failure; //第二次封装,简化参数,把没有用的参数去掉 - (void)requestWithType:(requestType)type URLString:(nonnull NSString *)URLString parameters:(nullable id)parameters success:(nullable void (^)(id _Nullable responseObject))successfailure:(nullable void (^)(NSError *_Nonnull error))failure; //第三次封装,直接使用类方法,外部调用单例避免重复 + (void)requestWithType:(requestType)type URLString:(nonnull NSString *)URLString parameters:(nullable id)parameters success:(nullable void (^)(id _Nullable responseObject))successfailure:(nullable void (^)(NSError *_Nonnull error))failure; @end

.m文件

#import "NetworkManger.h"static NetworkManger *instance; @implementation NetworkManger+ (instancetype)shareNetworkManger { static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ if (instance == nil) { instance = [super allocWithZone:zone]; } //让AFN默认也支持接收text/html文件类型 instance.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/html",@"text/plain", nil]; }); return instance; }//MARK: 一次封装的网络工具类 - (void)requestWithType:(requestType)type URLString:(NSString *)URLString parameters:(nullable id)parameters progress:(nullable void (^)(NSProgress *downloadProgress))downloadProgress success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure{ if (type == requestTypeGET) { [instance GET:URLString parameters:parameters progress:downloadProgress success:success failure:failure]; } else if (type == requestTypePOST) { [instance POST:URLString parameters:parameters progress:downloadProgress success:success failure:failure]; } }//MARK: 二次封装的网络工具类 - (void)requestWithType:(requestType)type URLString:(nonnull NSString *)URLString parameters:(nullable id)parameters success:(nullable void (^)(id _Nullable responseObject))successfailure:(nullable void (^)(NSError *_Nonnull error))failure{ //(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success void (^orginalSuccess)(NSURLSessionDataTask * _Nullable, id_Nullable) = ^(NSURLSessionDataTask * _Nullable task, id_Nullable responseObject) { //success((NSDictionary *)responseObject); success(responseObject); }; //(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure void (^orginalFailure)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull) = ^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) { failure(error); }; [self requestWithType:type URLString:URLString parameters:parameters progress:nil success:orginalSuccess failure:orginalFailure]; }//MARK: 三次封装的网络工具类 + (void)requestWithType:(requestType)type URLString:(nonnull NSString *)URLString parameters:(nullable id)parameters success:(nullable void (^)(id _Nullable responseObject))successfailure:(nullable void (^)(NSError *_Nonnull error))failure { [[NetworkManger shareNetworkManger] requestWithType:type URLString:URLString parameters:parameters success:success failure:failure]; }+(id)allocWithZone:(NSZone *)zone{ return [NetworkManger shareNetworkManger]; } // 为了严谨，也要重写copyWithZone 和 mutableCopyWithZone -(id)copyWithZone:(NSZone *)zone{ return [NetworkManger shareNetworkManger]; } -(id)mutableCopyWithZone:(NSZone *)zone{ return [NetworkManger shareNetworkManger]; }