IOS解析Json

背景：继续破解打卡，用IOS开发出一个APP.单个helloWorldOK了，和后端互动成功，现在就要将解析出的Json的结果放在页面上。同时期望按钮点击后，能改变页面上某些Label的值。

 

环境：Mac OS 10.11.5+Xcode7.3.1

 

1、IOS自从5以后就自带了解析了Json的功能，有一个类叫NSJSONSerialization，参考教程

如果自己懒得写后台Json的话，可以用一些公共的Json来练习。

 

2、按钮点击的事件，可以通过IBAction来绑定。具体操作就是在Story面板上，选择某个按钮，右键后会出现一堆事件列表，选择一个，点加号，然后拖到ViewController.m中，这样就会建立一个链接了。

参考链接

 

3、关于事件点击后，如何控制Label的值。这个要用Outlet来解决。思路和2非常像，不过在拖动之前，需要先在ViewController.h和ViewController.m中分别新建Property和thesize.下面的动作就和2差不多了。在某个按钮上右击，找到.h中的Outlet,拖动即可。

参考教程

 

4、控制页面跳转教程（仍未测试）

 

5、手工构造Json教程

 

6、关于Json中是数组是的解析方法

 

7、IOS动态拼接字符串

 

8、IOS NsLog用法 

 

总结：IOS基础非常不扎实，导致好多地方走了非常多的弯路，仍然没走过去。

主要体现在：Json出来的数据判断报错或者无效。给Story上的控件赋值报错

 

下面附上我Controller的源码，写的较挫，回头还要再优化。

//
//  ViewController.m
//  dakaDemo
//
//  Created by gemmy on 16/7/24.
//  Copyright © 2016年 shundepg. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController


@synthesize labelDate;
@synthesize initBtn;
@synthesize amBtn;
@synthesize pmBtn;
@synthesize labelAmId;
@synthesize labelPmId;


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


- (IBAction)initClick:(id)sender {
    
    
    NSError *error;
    
    //1.确定请求路径
    //NSURL *url = [NSURL URLWithString:@"http://apistore.baidu.com/microservice/weather?cityid=101010100"];
    NSURL *url = [NSURL URLWithString:@"http://115.182.83.55:8003/mobile"];
    
    //2.创建可变的请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    
    //3.修改请求方法为POST(大写)
    request.HTTPMethod = @"POST";
    
    //3.1 人为构造服务器需要的json格式
    NSDictionary * dic= @{@"methodName":@"getMyAttendance",@"orderNo":@"1463358870034",@"version":@"1.1.0",@"needReLogin":@"false",@"osType":@"IOS",@"deviceToken":@"",@"IOSUuid":@"201605160834302541341878187",@"mac":@"201605160834302541341878187",@"token":@"1b38dfa19a056fdb101543c5a6f6cdde",@"ip":@"",@"email":@"[e-mail]",@"userName":@"张大吉",@"companyLogoUrl":@"http://www.xxxtd.com/pc/images/icon_logo.png",@"phone":@"18812345678"};
    
    NSLog(@"DIC = %@",dic);
    NSData * data = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&error];
    
    // 把一个json格式的data,解析为OC中的NSString类型对象
    // 无特殊意义,一般用来查看JSON文本封装成 数组 还是 对象(OC中为字典)
    NSString * jsonString = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"-----------------------------%@",jsonString);
    
    NSString *dataStr=[NSString stringWithFormat:@"requestJson=%@",jsonString];
    
    
    
    //4.设置请求体
    request.HTTPBody = [dataStr dataUsingEncoding:NSUTF8StringEncoding];
    
    //设置请求头信息
    [request setValue:@"ios 9.0" forHTTPHeaderField:@"User-Agent"];
    
    //设置请求超时
    request.timeoutInterval = 60;
    
  
    //将请求的url数据放到NSData对象中
    NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    //IOS5自带解析类NSJSONSerialization从response中解析出数据放到字典中
    //这里是完整的Json串
    NSDictionary *fullDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];
    
    
    NSArray *objectArray = [fullDic objectForKey:@"object"];
    
    NSLog(@"objectArray:%@",objectArray);
    
    
    //遍历输出object里的list
    
    for(NSDictionary *aObject in objectArray){
        NSArray *attendArray = [aObject objectForKey:@"list"];
        
        NSInteger count=0;
        
        for(NSDictionary *aAttend in attendArray){
            
            
            NSString *id = [aAttend objectForKey:@"id"];
            NSString *isClock = [aAttend objectForKey:@"isClock"];
            NSString *date = [aAttend objectForKey:@"date"];
            
            if(count == 0){
                //1.分别给控件设置状态
                //1.1 日期设置好
//                labelDate.text=date;
                //1.2 设置上班打卡状态
//                if([isClock isEqualToString:@"1"]){
//                    [amBtn setTitle:@"已打卡" forState:UIControlStateNormal];
//                }else if([isClock isEqualToString:@"0"]){
//                    [amBtn setTitle:@"未打卡" forState:UIControlStateNormal];
//                }
             
//                [amBtn setTitle:isClock forState:UIControlStateNormal];
                
                //1.3 设置id
                labelAmId.text=id;
                NSLog(@"id:%@",id);
            }else if (count ==1 ){
                //2.分别给控件设置状态
                //2.2 设置下班打卡状态
//                if([isClock isEqualToString:@"1"]){
//                    [amBtn setTitle:@"已打卡" forState:UIControlStateNormal];
//                }else if([isClock isEqualToString:@"0"]){
//                    [amBtn setTitle:@"未打卡" forState:UIControlStateNormal];
//                }
                //1.3 设置id
                labelPmId.text=id;
                NSLog(@"id:%@",id);
            }
            count++;
            
        }

        
        
        
    }
    
    
   
    NSLog(@"attendency字典里面的内容为--》%@", fullDic );
    
    
    
    //1.点击此按钮后，将未打卡的状态全部置成已打卡
    //1.1 设置日期
//    labelDate.text=[weatherInfo objectForKey:@"city"];//1
    
    //1.2 设置上班打卡状态
//    [amBtn setTitle:[weatherInfo objectForKey:@"city"] forState:UIControlStateNormal];

    //1.3 设置下班打卡状态
//    [pmBtn setTitle:[weatherInfo objectForKey:@"city"] forState:UIControlStateNormal];
    
    
}


- (IBAction)amBtnClick:(id)sender {
    
    
    //1.确定请求路径
    NSURL *url = [NSURL URLWithString:@"http://apistore.baidu.com/microservice/weather?cityid=101010100"];
    
    //2.创建可变的请求对象
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    
    //3.修改请求方法为POST(大写)
    request.HTTPMethod = @"POST";
    
    //4.设置请求体
    //request.HTTPBody = [@"username=dede&pwd=ede&type=JSON" dataUsingEncoding:NSUTF8StringEncoding];
    
    //设置请求头信息
    [request setValue:@"ios 9.0" forHTTPHeaderField:@"User-Agent"];
    
    //设置请求超时
    request.timeoutInterval = 10;
    
    
    NSError *error;
       //将请求的url数据放到NSData对象中
    NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    //IOS5自带解析类NSJSONSerialization从response中解析出数据放到字典中
    NSDictionary *weatherDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];
    NSDictionary *weatherInfo = [weatherDic objectForKey:@"retData"];
    NSString *str = [NSString stringWithFormat:@"今天是 %@  %@  %@  的天气状况是：%@  %@ ",[weatherInfo objectForKey:@"date_y"],[weatherInfo objectForKey:@"week"],[weatherInfo objectForKey:@"city"], [weatherInfo objectForKey:@"weather1"], [weatherInfo objectForKey:@"temp1"]];
    NSLog(@"weatherInfo字典里面的内容为--》%@", weatherDic );
    
    NSLog(@"%@", str );

    
    //1.2 设置上班打卡状态
    [amBtn setTitle:[weatherInfo objectForKey:@"city"] forState:UIControlStateNormal];
    
    
    
    
    
    NSLog(@"amBtn...");
}



- (IBAction)pmBtnClick:(id)sender {
    
    
    NSError *error;
    //加载一个NSURL对象
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://apistore.baidu.com/microservice/weather?cityid=101010100"]];
    //将请求的url数据放到NSData对象中
    NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
    //IOS5自带解析类NSJSONSerialization从response中解析出数据放到字典中
    NSDictionary *weatherDic = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];
    NSDictionary *weatherInfo = [weatherDic objectForKey:@"retData"];
    NSString *str = [NSString stringWithFormat:@"今天是 %@  %@  %@  的天气状况是：%@  %@ ",[weatherInfo objectForKey:@"date_y"],[weatherInfo objectForKey:@"week"],[weatherInfo objectForKey:@"city"], [weatherInfo objectForKey:@"weather1"], [weatherInfo objectForKey:@"temp1"]];
    NSLog(@"weatherInfo字典里面的内容为--》%@", weatherDic );
    
    NSLog(@"%@", str );

    //1.3 设置下班打卡状态
    [pmBtn setTitle:[weatherInfo objectForKey:@"city"] forState:UIControlStateNormal];
    
    
    NSLog(@"amBtn...");
    
}




@end