IOS开发控件视图day06:Location定位和Map地图的使用
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2022-04-29 10:33:14
1、导包和配置文件(1)Info.plist文件设置访问权限(2)点击项目,在General中添加包2、Location获取当前位置坐标(1)声明和关联控件@interface LocationViewController ()//位置管理者@property (nonatomic,strong)CLLocationManager *manager;@property (weak, nonatomic) IBOutlet U...
1、导包和配置文件
(1)Info.plist文件设置访问权限
(2)点击项目,在General中添加包
2、Location获取当前位置坐标
(1)声明和关联控件
@interface LocationViewController ()<CLLocationManagerDelegate>
//位置管理者
@property (nonatomic,strong)CLLocationManager *manager;
@property (weak, nonatomic) IBOutlet UILabel *lab1;
@property (weak, nonatomic) IBOutlet UILabel *lab2;
@property (weak, nonatomic) IBOutlet UILabel *lab3;
@end
(2)初始化
@implementation LocationViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self location];
}
- (CLLocationManager *)manager{
if (!_manager) {
_manager = [[CLLocationManager alloc] init];
}
return _manager;
}
(3)定位
-(void)location{
//1、创建位置管理器
//向用户请求我们的程序使用位置
[self.manager requestAlwaysAuthorization];
[self.manager requestWhenInUseAuthorization];
//设置定位的更新距离(10米)
self.manager.distanceFilter = 10.0f;
//设置代理
self.manager.delegate = self;
//开启定位功能
[self.manager startUpdatingLocation];
}
(4)获取位置与编码
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
//获得当前最新位置
CLLocation *location = (CLLocation *)[locations lastObject];
double lat = location.coordinate.latitude;
double lon = location.coordinate.longitude;
NSString *str1 = [NSString stringWithFormat:@" %f",lat];
NSString *str2 = [NSString stringWithFormat:@" %f",lon];
_lab1.text = str1;
_lab2.text = str2;
//反地理编码实现所在城市显示
//1、创建一个CLGecoder对象
CLGeocoder *geocoder = [CLGeocoder new];
//2、实现反地理编码方法
[geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//3.1、预防处理
if (placemarks.count == 0 || error) {
NSLog(@"解析没有数据或者出错");
return;
}
for (CLPlacemark *placemark in placemarks) {
NSString *str3 = [NSString stringWithFormat:@"%@,%@",placemark.locality,placemark.name];
self.lab3.text = str3;
}
}];
}
(5)停止定位
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[self.manager stopUpdatingLocation];
}
(6)实际效果
3、Map地图的定位、放大缩小以及地图样式
(1)声明和绑定控件
@interface MapViewController ()<MKMapViewDelegate>
@property (retain, nonatomic) IBOutlet MKMapView *mapView;
@property(nonatomic,strong)CLLocationManager *mgr;
@end
(2)位置管理器
//1、创建位置管理器
self.mgr = [CLLocationManager new];
//2、请求授权 -->plist
if ([self.mgr respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
[self.mgr requestWhenInUseAuthorization];
}
//3、设置显示用户位置
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
//4、设置代理-->获取用户位置
self.mapView.delegate = self;
(3)地图样式切换
- (IBAction)mapTypeChangeClick:(UISegmentedControl *)sender {
// MKMapTypeStandard = 0, 默认
// MKMapTypeSatellite, 卫星
// MKMapTypeHybrid, 混合
// MKMapTypeSatelliteFlyover NS_ENUM_AVAILABLE(10_11, 9_0),
// MKMapTypeHybridFlyover NS_ENUM_AVAILABLE(10_11, 9_0),
// MKMapTypeMutedStandard NS_ENUM_AVAILABLE(10_13, 11_0) __TVOS_AVAILABLE(11_0),
switch (sender.selectedSegmentIndex) {
case 0:
self.mapView.mapType = MKMapTypeStandard;
break;
case 1:
self.mapView.mapType = MKMapTypeSatellite;
break;
case 2:
self.mapView.mapType = MKMapTypeHybrid;
break;
default:
break;
}
}
(4)完成用户位置更新的时候,调用MKUserLocation:大头针模型
-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
//显示大头针信息 -->反地理编码实现
//1、创建一个CLGecoder对象
CLGeocoder *geocoder = [CLGeocoder new];
//2、实现反地理编码方法
[geocoder reverseGeocodeLocation:userLocation.location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//3.1、预防处理
if (placemarks.count == 0 || error) {
return;
}
//3.2、获取对象
CLPlacemark *placemark = placemarks.lastObject;
//3.3、设置标题为城市信息
userLocation.title = placemark.locality;
//3.4设置子标题为详细地址
userLocation.subtitle = placemark.name;
}];
}
(6)返回用户所在位置
- (IBAction)backUserLocationClick:(id)sender
{
//1、设置中心点坐标
// self.mapView.centerCoordinate = self.mapView.userLocation.location.coordinate;
//2、设置范围属性
//2.1、获取坐标
CLLocationCoordinate2D coordinate = self.mapView.userLocation.location.coordinate;
//2.2设置显示范围
MKCoordinateSpan span = MKCoordinateSpanMake(0.028219, 0.017767);
//设置范围方法,可以设置动画
[self.mapView setRegion:MKCoordinateRegionMake(coordinate, span)animated:YES];
}
//当地图显示区域发生改变后,会调用的方法
-(void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated
{
//获取默认的显示大小 --> span
NSLog(@"latitudeDelta:%f,longitudeDelta:%f",mapView.region.span.latitudeDelta,mapView.region.span.longitudeDelta);
}
(7)放大地图
- (IBAction)zoomIn:(id)sender
{
//1、Delta缩小一倍
CGFloat latitude = self.mapView.region.span.latitudeDelta * 0.5;
CGFloat longitude = self.mapView.region.span.longitudeDelta * 0.5;
//2、重设region值
[self.mapView setRegion:MKCoordinateRegionMake(self.mapView.region.center, MKCoordinateSpanMake(latitude, longitude))animated:YES];
}
(8)缩小地图
- (IBAction)zoomOut:(id)sender
{
//1、Delta扩大一倍
CGFloat latitude = self.mapView.region.span.latitudeDelta * 2;
CGFloat longitude = self.mapView.region.span.longitudeDelta * 2;
//2、重设region值
[self.mapView setRegion:MKCoordinateRegionMake(self.mapView.region.center, MKCoordinateSpanMake(latitude, longitude))animated:YES];
}
(9)实际效果
本文地址:https://blog.csdn.net/wenyu_Saitama/article/details/107320877