天气查询代码,ObjC代码库,德仔网

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代码分类
【ObjC】天气查询
作者:英男 / 发布于2015/4/2/ 1367
iOS7 以上，最佳平台iphone6
按下开始查询后显示第一个城区第一天的天气
若出现资源暂时不存在的情况会显示302错误，按下按钮刷新界面

	@interface ViewController (){
	
	
	 NSMutableArray *arrayData; //保存城市id
	 NSMutableArray *arrayCityName; //pick中的城市名字
	 UIPickerView *picker; //下方滚动视图
	
	}
	
	@end
	
	@implementation ViewController
	
	
	
	- (void)viewDidLoad {
	 [super viewDidLoad];
	 // Do any additional setup after loading the view, typically from a nib.
	
	 _wu.hidden = YES;
	
	 //city
	 arrayData = [[NSMutableArray alloc] init];
	 arrayCityName = [[NSMutableArray alloc] init];
	 NSString *path = [[NSBundle mainBundle] pathForResource:@"cityCode" ofType:@"plist"];
	 NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:path];
	 const NSArray *array = [dictionary allKeys];
	 for (int i = 0;i < array.count; i++) {
	
	 NSString *idd = [dictionary objectForKey:[array objectAtIndex:i]];
	 [arrayData addObject:idd];
	 [arrayCityName addObject:[array objectAtIndex:i]];
	 }
	
	
	 //pick
	 picker = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 400, self.view.bounds.size.width, self.view.bounds.size.height - 400)];
	 picker.delegate = self;
	 picker.dataSource = self;
	 [self.view addSubview:picker];
	 picker.showsSelectionIndicator = YES;
	
	 //request
	 blockJson = ^(NSInteger day,NSString *path){
	
	 NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"http://m.weather.com.cn/atad/%@.html",path]];
	 NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLRequestReturnCacheDataElseLoad timeoutInterval:30];
	 NSURLSession *session = [NSURLSession sharedSession];
	 NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
	
	 NSLog(@"%@",response);
	
	 if (data == nil) {
	
	 NSLog(@"error: %@",error);
	
	 }else{
	
	 NSError *jsonError;
	 NSDictionary *jsonDiction = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&jsonError];
	
	 if (jsonDiction == nil) {
	
	 NSLog(@"error %@",jsonError);
	 _wu.hidden = NO;
	
	 }else {
	
	 //回到主线程更改UI
	 NSDictionary *dictionary = [jsonDiction objectForKey:@"weatherinfo"];
	 dispatch_async(dispatch_get_main_queue(), ^{
	
	 _city.text = [dictionary objectForKey:@"city"];
	 _wenDu.text = [dictionary objectForKey:[NSString stringWithFormat:@"temp%ld",(day + 1)]];
	 _fengXiang.text = [dictionary objectForKey:[NSString stringWithFormat:@"fx%ld",(day + 1)]];
	 _fengJi.text = [dictionary objectForKey:[NSString stringWithFormat:@"fl%ld",(day + 1)]];
	 _tianQi.text = [dictionary objectForKey:[NSString stringWithFormat:@"weather%ld",(day + 1)]];
	 _shiJian.text = [dictionary objectForKey:@"date_y"];
	 _jianYi.text = [dictionary objectForKey:@"index_d"];
	
	 });
	 }
	 }
	
	 }];
	
	 [task resume];
	
	 };
	
	 }
	
	
	//指定列数
	- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
	
	 return 2;
	}
	
	//2.指定每列中的行数
	- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
	
	 if (component == 1) {
	
	 return arrayData.count;
	 }else{
	
	 return 6;
	 }
	}
	
	
	//自定义pick行视图
	- (UIView *)pickerView:(UIPickerView *)pickerView
	 viewForRow:(NSInteger)row
	 forComponent:(NSInteger)component
	 reusingView:(UIView *)view {
	
	 if(view == nil){
	
	 UILabel *lable = [[UILabel alloc] init];
	 lable.backgroundColor = [UIColor orangeColor];
	 if (component == 1) {
	
	 lable.text = [arrayCityName objectAtIndex:row];
	 }else{
	
	 lable.text = [NSString stringWithFormat:@"今后第: %ld 天",row];
	 }
	 lable.textAlignment = NSTextAlignmentCenter;
	 view = (UIView *)lable;
	
	
	 }
	 return view;
	
	}
	
	
	
	//选中行，调用的协议方法
	- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
	
	 NSString *path = [arrayData objectAtIndex:[pickerView selectedRowInComponent:1]];
	 NSInteger day = [pickerView selectedRowInComponent:0];
	 NSLog(@"---------------zuo %ld hang %ld",[pickerView selectedRowInComponent:0],[pickerView selectedRowInComponent:1]);
	 blockJson(day,path);
	 _wu.hidden = YES;
	
	}
	
	
	- (void)didReceiveMemoryWarning {
	 [super didReceiveMemoryWarning];
	 // Dispose of any resources that can be recreated.
	
	}
	
	- (IBAction)pinLa:(id)sender {
	
	 [picker reloadAllComponents];
	 _wu.hidden = YES;
	
	}
	
	//点击查询按钮显示第一个城市信息
	- (IBAction)chaXun:(id)sender {
	
	 NSString *path = [arrayData objectAtIndex:0];
	 blockJson(0,path);
	 //UIPickerView显示指定行
	 [picker selectRow:0 inComponent:0 animated:YES];
	 [picker selectRow:0 inComponent:1 animated:YES];
	 _wu.hidden = YES;
	}
	
	
	@end
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