AF使用不当造成内存泄漏问题

AF使用

manager

+ (AFHTTPSessionManager*) manager
{
    static dispatch_once_t onceToken;
    static AFHTTPSessionManager *manager = nil;
    dispatch_once(&onceToken, ^{
        manager = [AFHTTPSessionManager manager];
        manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json",@"text/json", @"text/javascript",@"text/html",@"text/plain",nil];
        manager.requestSerializer=[AFHTTPRequestSerializer serializer];
        manager.requestSerializer.timeoutInterval = 10;
    });
    
    return manager;
}

post

+ (void)postWithUrlString:(NSString *)urlString parameters:(NSDictionary *)parametersDic completionHandler:(void (^)(NSString * _Nullable, NSDictionary * _Nullable))handle{
    
    [[self manager] POST:urlString parameters:parametersDic progress:^(NSProgress * _Nonnull uploadProgress) {
        
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        if ([responseObject isKindOfClass:[NSDictionary class]]) {
            NSDictionary *resultDic = (NSDictionary *)responseObject;
            handle(nil,resultDic);
        }else{
            handle(@"数据格式异常",nil);
        }
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        handle(error.description,nil);
    }];
}