使用MVC模式
创建LodData继承NSObject
LodData.h中创建单例模式、解析天气
// 创建单利方法
+(instancetype)showCityMessage;
// 解析城市天气预报方法
-(void)getCityWeather:(NSString*)url;
LodData.m
@interface LoadData()
{
// 创建可变数组
NSMutableDictionary*_cityWeatherDic;
}
@end
// 创建单利变量
static LoadData *ld;
@implementation LoadData
// 实现创建单利方法
+(instancetype)showCityMessage{
// 防止重复初始化Ld变量
staticdispatch_once_tonceToken;
dispatch_once(&onceToken, ^{
ld= [[LoadDataalloc]init];
});
return ld;
}
+(instancetype)allocWithZone:(struct_NSZone*)zone{
if(!ld) {
ld= [superallocWithZone:zone];
}
return ld;
}
- (id)copy{
return self;
}
- (id)mutableCopy{
return self;
}
// 实现解析城市天气预报方法
-(void)getCityWeather:(NSString*)url{
NSLog(@"%@",url);
// 创建URl解析
NSURLSession *session = [NSURLSession sharedSession];
_cityWeatherDic = [NSMutableDictionary dictionary];
// 创建task
NSURLSessionTask*task = [sessiondataTaskWithURL:[NSURLURLWithString:url]completionHandler:^(NSData*_Nullabledata,NSURLResponse*_Nullableresponse,NSError*_Nullableerror) {
self->_cityWeatherDic = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
// NSLog(@"数据==%@",self->_cityWeatherDic);
dispatch_async(dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter]postNotificationName:@"getCityWeather" object:self->_cityWeatherDic];
});
}];
// 开始请求
[taskresume];
}
#import "ViewController.h"
#import "LoadData.h"
#import "WeatherViewController.h"
// 创建接口
#define WEATHER_URL @"https://www.sojson.com/open/api/weather/json.shtml?city=%@"
@interface ViewController (){
// 创建对象
LoadData*ld;
WeatherViewController *weatherVc;
}
@property (strong, nonatomic) IBOutlet UILabel *cityLb;
@property (strong, nonatomic) IBOutlet UITextField *cityTF;
// 创建可变数组接收数据
//@property (nonatomic,strong)NSMutableDictionary *weatherDic;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 注册通知
[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(getCityWeather:) name:@"getCityWeather" object:nil];
// 初始化ld
ld = [LoadData showCityMessage];
}
#pragma mark - 注册通知接收数据方法
- (void)getCityWeather:(NSNotification*)notifi{
// // 初始化对象
weatherVc = [[WeatherViewController alloc]init];
weatherVc.messageDic = notifi.object;
// NSLog(@"===%@",weatherVc.messageDic);
// 跳转
[self presentViewController:weatherVc animated:YES completion:nil];
}
// 点击按钮方法
- (IBAction)cityBtn:(id)sender {
NSString*data =self.cityTF.text;
//转换成UTF-8
NSString *dataUTF8 = [data stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString*str = [NSStringstringWithFormat:WEATHER_URL,dataUTF8];
[ld getCityWeather:str];
}
@end
@interfaceWeatherViewController :UIViewController
@property (nonatomic,strong)NSMutableDictionary *messageDic;
@end
#import "WeatherViewController.h"
@interface WeatherViewController ()
@property (strong, nonatomic) IBOutlet UILabel *cityLb;
@property (strong, nonatomic) IBOutlet UILabel *shiduLb;
@property (strong, nonatomic) IBOutlet UILabel *pm25Lb;
@property (strong, nonatomic) IBOutlet UILabel *pm10Lb;
@property (strong, nonatomic) IBOutlet UILabel *wenduLb;
@property (strong, nonatomic) IBOutlet UITextView *ganmaoLb;
@end
@implementationWeatherViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 进行赋值
self.cityLb.text = self.messageDic[@"city"];
NSMutableDictionary*otherDic =self.messageDic[@"data"];
self.shiduLb.text= otherDic[@"shidu"];
self.wenduLb.text= otherDic[@"wendu"];
self.pm25Lb.text = self.messageDic[@"date"];
self.pm10Lb.text= otherDic[@"quality"];
self.wenduLb.text= otherDic[@"wendu"];
self.ganmaoLb.text= otherDic[@"ganmao"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent*)event{
[self dismissViewControllerAnimated:YES completion:nil];
}
@end
