- 导入地图框架
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
1、定位
//CLLocationManager定位器
//1 判断设备是否支持定位服务
if (![CLLocationManager locationServicesEnabled]) {
NSLog(@"不支持此设备");
return;
}
//2 创建定位服务
_locationManager = [[CLLocationManager alloc] init];
//3 请求用户授权(使用期间) 在info.plist文件添加的字段必须与设置的字段一致
[_locationManager requestWhenInUseAuthorization];
//4 配置定位服务
//4.1 设置定位精度
_locationManager.desiredAccuracy = kCLLocationAccuracyBest;
//4.2 设置过滤距离(以用户位置方圆100米为半径，实际位置超过该范围才会更新位置。否则不更新)
_locationManager.distanceFilter = 100;
//4.3 设置代理
_locationManager.delegate = self;
//5 开始定位,定位为耗时操作。定位成功后一定关闭定位。
[_locationManager startUpdatingLocation];
// 在模拟器上定位失败的解决方法
//1 重置模拟器
//2 模拟器设置。debug - location - apple 和 customer 之间切换
2、地图标点
//字符转化
CGFloat latitude = [dic[@"LATITUDE"] floatValue];
CGFloat longtitude = [dic[@"LONGITUDE"] floatValue];
//设置地图显示的中心点及缩放比例
CLLocationCoordinate2D center = {latitude,longtitude};
MKCoordinateSpan span;
span.latitudeDelta = 1;
span.longitudeDelta = 1;
MKCoordinateRegion region = {center,span};
[self.mapView setRegion:region animated:YES];
MKPointAnnotation *anno = [[MKPointAnnotation alloc] init];
anno.title = dic[@"NAME"];
anno.subtitle = dic[@"ADDRESS"];
anno.coordinate = center;
//调用此方法在地图上加坐标点
[self.mapView addAnnotation:anno];
3、根据地名获取经纬度
- (void)showLatitudeFromCityName:(NSString *)cityName {
__block NSDictionary *dic = [NSDictionary dictionary];
CLGeocoder *myGeocoder = [[CLGeocoder alloc] init];
[myGeocoder geocodeAddressString:cityName completionHandler:^(NSArray *placemarks, NSError *error) {
if ([placemarks count] > 0 && error == nil)
{
CLPlacemark *firstPlacemark = [placemarks objectAtIndex:0];
dic = @{@"LONGITUDE":@(firstPlacemark.location.coordinate.longitude),
@"LATITUDE":@(firstPlacemark.location.coordinate.latitude)
};
[self showPointOfLatitude:dic];
}
else if ([placemarks count] == 0 && error == nil)
{
NSLog(@"Found no placemarks.");
}
else if (error != nil)
{
NSLog(@"An error occurred = %@", error);
}
}];
}
4、反向解析
（1）与长按手势进行配合（手势添加到地图上）
//长按手势
UILongPressGestureRecognizer *gest = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressAction:)];
[self.mapView addGestureRecognizer:gest];
（2）根据选中的点，获取相关点
- (void)longPressAction:(UILongPressGestureRecognizer *)sender{
//获取触摸的点
CGPoint point = [sender locationInView:self.mapView];
//通过触摸的点获取经纬度
CLLocationCoordinate2D coord = [self.mapView convertPoint:point toCoordinateFromView:self.mapView];
//组装参数
CLLocation *location = [[CLLocation alloc] initWithLatitude:coord.latitude longitude:coord.longitude];
//获取信息
[geo reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//获取位置
if (placemarks.count != 0) {
CLPlacemark *placeMark = placemarks.firstObject;
NSArray *addressArray = placeMark.addressDictionary[@"FormattedAddressLines"];
//拼接地址
NSMutableString *address = [[NSMutableString alloc] init];
for (int i = 0; i < addressArray.count; i ++) {
[address appendString:addressArray[i]];
}
MKPointAnnotation *anno = [[MKPointAnnotation alloc] init];
anno.title = placeMark.name;
anno.subtitle = address;
anno.coordinate = coord;
[self.mapView addAnnotation:anno];
}
}];
}
