首先,需要通过系统方法获取当前经纬度
引入头文件 #import <coreLocation/CoreLocation.h>
创建manager对象,用来获取当前位置
@property (strong, nonatomic)CLLocationManager *locationManager;
然后,写一个实例方法,来统一获取定位、温度
#pragma mark --定位&温度
- (void)locationAndTemperature{
// 初始化位置管理器
if (![CLLocationManager locationServicesEnabled])
{
//定位未开启,温度无法显示 (笔者并未完善,读者此处可以根据需求进行修改)
}
else
{
_locationManager = [[CLLocationManager alloc] init];
_locationManager.delegate = self;
[self.locationManager requestWhenInUseAuthorization];
[_locationManager startUpdatingLocation];
}
}
开始系统定位以后,系统会以非常高的频率执行更新定位方法
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray*)locations{
此处的locations 就是当前定位的数组,里面存的是CLLocation 类型的位置信息 包含经纬度
此时,笔者使用的是与苹果系统相同的天气API,需要通过城市名获取当前天气信息的JSON文件,因此,此时可以通过系统的反向地理编码获取当前经纬度所在的城市。
// 获取当前所在的城市名
CLGeocoder *geocoder = [[CLGeocoder alloc] init];
for (CLLocation *loca in _locations) {
[geocoder reverseGeocodeLocation:loca completionHandler:^(NSArray *array, NSError *error){
if (array.count > 0)
{
CLPlacemark *placemark = [array objectAtIndex:0];
NSString *city = placemark.locality;
NSString *city1 = [city stringByReplacingCharactersInRange:NSMakeRange(city.length-1,1) withString:@""];
//更改为英文 并调用天气api进行查询 (此处调用的类方法实现,在此方法下方)同时,
[self transform:city1]用来将中文的城市名转换为英文
[WeatherService getTemperatureWithCityName:[self transform:city1] completion:^(NSError *error, id responseObject) {
if (responseObject != nil) {
[self.temperatureButton setTitle:[NSString stringWithFormat:@"%@℃",responseObject] forState:UIControlStateNormal];
;
[_locationManager stopUpdatingLocation];
}
LOG("温度%@",responseObject);
}];
}
else if (error == nil && [array count] == 0)
{
LOG("无数据返回");
}
else if (error != nil)
{
LOG("错误:%@", error);
}
}];
}
}
--此处是将中文转换为英文的方法
//将中文转换为拼音
- (NSString *)transform:(NSString *)chinese
{
if (chinese != nil) {
NSMutableString *pinyin = [chinese mutableCopy];
CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformMandarinLatin, NO);
CFStringTransform((__bridge CFMutableStringRef)pinyin, NULL, kCFStringTransformStripCombiningMarks, NO);
return [[pinyin uppercaseString] stringByReplacingOccurrencesOfString:@" " withString:@""];
}
return nil;
}
-- 此处是笔者单独封装的Weather类,用来请求数据
+ (AFHTTPRequestOperation *)getTemperatureWithCityName:(NSString *)cityName completion:(SCServiceCompletion)completion{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
__block NSString *temperature = @"";
AFHTTPRequestOperation * DataTask = [manager GET:[NSString stringWithFormat:@"http://api.wunderground.com/api/你的API参数/conditions/q/CA/%@.json",cityName] parameters:nil success:^(AFHTTPRequestOperation * _Nonnull operation, id _Nonnull responseObject) {
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableLeaves error:nil];
NSDictionary *dic1 = [dic objectForKey:@"current_observation"];
temperature = [dic1 objectForKey:@"feelslike_c"];
// dispatch_queue_t queue = dispatch_queue_create("WEATHER", DISPATCH_QUEUE_CONCURRENT);
dispatch_async(dispatch_get_main_queue(), ^{
dispatch_async(dispatch_get_main_queue(), ^{
if (completion) {
completion(nil, temperature);
}
});
});
} failure:^(AFHTTPRequestOperation * _Nullable operation, NSError * _Nonnull error) {
}];
return DataTask;
}
此时,即可获取到手机定位所在地的体感温度
API链接地址 : http://api.wunderground.com/weather/api/d/docs?d=data/index
笔者QQ 268081059 如有不妥之处,欢迎指出
本文作者原创,如需转载,请注明出处。