//
// ViewController.m
// Post异步-网络请求
//
// Created by YIem on 16/3/1.
// Copyright © 2016年 YIem. All rights reserved.
//

import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

• (void)viewDidLoad {

  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
  self.view.backgroundColor = [UIColor whiteColor];
  UIButton *postButton = [UIButton buttonWithType:UIButtonTypeSystem];
  postButton.frame = CGRectMake(100, 100, 100, 100);
  [postButton setTitle:@"Post异步网络请求" forState:UIControlStateNormal];
  [postButton addTarget:self action:@selector(postAction) forControlEvents:UIControlEventTouchUpInside];
  [self.view addSubview:postButton];

  }

• (void)postAction
  {

  // 网址
  NSString *urlStr = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";
  // 转码
  NSString *urlEncode = [urlStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
  NSURL *url = [NSURL URLWithString:urlEncode];
  // 请求(设置时间)
  NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:50];
  // 添加Body体
  // 设置post模式
  request.HTTPMethod = @"POST";
  NSString *bodyStr = @"date=20131129&startRecord=1&len=30&udid=1234567890&terminalType=Iphone&cid=213";
  // 将网址转为二进制流
  NSData *bodyData = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];
  // 将二进制流添进请求
  request.HTTPBody = bodyData;
  // 配置(默认配置)
  NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
  // 创建请求任务
  NSURLSessionDataTask *postTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
      
      NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
      NSLog(@"--%@", dic);
  }];
  

  // 开始任务

  [postTask resume];

  }

• (void)didReceiveMemoryWarning {

  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.

  }

@end