iOS cllocation定位

陈旧面容

#import <CoreLocation/CoreLocation.h>
准守<CLLocationManagerDelegate>
@property (weak, nonatomic) IBOutlet UILabel *cityLable;

@property(nonatomic,retain)CLLocationManager* locationManage;
@property(nonatomic,copy)NSString* cityName;

@implementation ViewController

#warning 如果不成功需要在Info文件中加入两个Key
/*
NSLocationAlwaysUsageDescription
NSLocationWhenInUseUsageDescription
不需要给键赋值
*/
- (void)viewDidLoad {
[super viewDidLoad];

}
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

      [self locate];
}
-(void)locate{
//判断定位炒作是否被允许
//8.0之前的不需要判断
if ([[UIDevice currentDevice].systemVersion doubleValue]>=8.0) {
//       self.cityLable.text = @"版本问题";
      [self.locationManage requestWhenInUseAuthorization];
}
if ([CLLocationManager locationServicesEnabled]) {
      self.locationManage = [[CLLocationManager alloc] init];
      //精确的经纬度
      self.locationManage.desiredAccuracy = kCLLocationAccuracyBest;
      //精确的距离范围
      self.locationManage.distanceFilter = 10;
         self.locationManage.delegate = self;
}else{
      //提示不成功的..没有打开定位开关
      UIAlertController* alertCV = [UIAlertController alertControllerWithTitle:@"提示" message:@"定位不成功" preferredStyle:UIAlertControllerStyleAlert];
      UIAlertAction* action = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
      [alertCV addAction:action];
}
//打开定位控制器
[self.locationManage startUpdatingLocation];
}

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{
//location是定位的一些位置
//创建定位,当前的定位取出最后一个也就是现在的位置
CLLocation * currentLocation = [locations lastObject];
//反地址编码经纬度开确定当前的经纬度
CLGeocoder* geocoader = [[CLGeocoder alloc] init];
//通过经纬度来确定城市等位置
[geocoader reverseGeocodeLocation:currentLocation completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
      //存在定位的地址时判断
      if (placemarks.count > 0 ) {
         //获取详细的地址
         CLPlacemark* placemark = [placemarks objectAtIndex:0];
//          NSLog(@"%@",placemark.name);
         //城市
         NSString* city = placemark.locality;
         if (!city) {
            //如果不是城市就可能是直辖市就是这个
         city = placemark.administrativeArea;
         }
         //返回值
         self.cityLable.text= city;
         //如果不存在错误且没有搜索到城市的判断
      }else if (error == nil && placemarks.count == 0){
         //弹框提示
         UIAlertController* alertCV = [UIAlertController alertControllerWithTitle:@"提示" message:@"没有定位到城市" preferredStyle:UIAlertControllerStyleAlert];
         UIAlertAction* action = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
         [alertCV addAction:action];
      }else if(error != nil ){
         //存在错误的是后也给个提示
         UIAlertController* alertCV = [UIAlertController alertControllerWithTitle:@"提示" message:(NSString *)error preferredStyle:UIAlertControllerStyleAlert];
         UIAlertAction* action = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
         [alertCV addAction:action];
      }
}];
//关闭定位如果不关闭美国一分钟就会自动定位一次
[manager stopUpdatingLocation];
}
//定位失败的时候回调用这个方法
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
if (error.code == kCLErrorDenied) {
      UIAlertController* alertCV = [UIAlertController alertControllerWithTitle:@"提示" message:@"是否是没有打开定位" preferredStyle:UIAlertControllerStyleAlert];
      UIAlertAction* action = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
      [alertCV addAction:action];
}
}