import <Foundation/Foundation.h>

typedef void (^completeBlock)(id result);
typedef void (^errorBlock)(NSError *error);
@interface NetworkRequest : NSObject

+(NetworkRequest *)shareInstance;
-(void)networkRequestWithUrlstr:(NSString *)urlStr requestType:(NSString *)requestType paramaterDic:(NSDictionary *)paramaterDic completeBlock:(completeBlock)completeBlock errorBlock:(errorBlock)errorBlock;
@end

/*************************/

import "NetworkRequest.h"

static NetworkRequest *netRequest = nil;
@implementation NetworkRequest
+(NetworkRequest *)shareInstance{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
netRequest = [[NetworkRequest alloc]init];
});
return netRequest;
}
-(void)networkRequestWithUrlstr:(NSString *)urlStr requestType:(NSString *)requestType paramaterDic:(NSDictionary *)paramaterDic completeBlock:(completeBlock)completeBlock errorBlock:(errorBlock)errorBlock{

NSURL *url = [NSURL URLWithString:urlStr];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:15];
request.HTTPMethod = requestType;
request.HTTPBody = [self makeParamaterToDataWithDic:paramaterDic];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *task  = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
    if (!error) {
        id result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
        completeBlock(result);
    }else
    {
        errorBlock(error);
    }
}];
[task resume];

}

• (NSData *)makeParamaterToDataWithDic:(NSDictionary *)dic{
  NSString *paramateStr = [NSString string];
  NSMutableArray *array = [[NSMutableArray alloc] init];
  for (NSString *key in dic) {
  [array addObject:[NSString stringWithFormat:@"%@=%@",key,dic[key]]];
  }
  paramateStr = [array componentsJoinedByString:@"&"];
  NSData *data = [paramateStr dataUsingEncoding:NSUTF8StringEncoding];
  return data;
  }
  @end