地图与位置服务笔记
//第一步：创建标注Annotation类，实现MKAnnotation协议
#import "ViewController.h"
#import "AnnotationModel.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
manager = [[CLLocationManager alloc] init];
[manager requestAlwaysAuthorization];
MKMapView *mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
mapView.delegate = self;
//设置地图类型
mapView.mapType = MKMapTypeStandard;
//设置当前用户的位置
mapView.showsUserLocation = YES;
//设置经纬度
CLLocationCoordinate2D center = {39.9145402256,116.1767592387};
//设置精确度，数值越大，显示的范围越大
MKCoordinateSpan span = {0.1,0.1};
//创建一个区域
MKCoordinateRegion region = {center,span};
//设置显示的区域
[mapView setRegion:region animated:YES];
[self.view addSubview:mapView];
//第二步：创建标注Annotation对象
CLLocationCoordinate2D coord1 = {39.9117669028,116.1933922217};
AnnotationModel *model1 = [[AnnotationModel alloc] initWithCoordinate:coord1];
model1.title = @"石景山公园";
model1.subtitle = @"北京石景山公园";
CLLocationCoordinate2D coord2 = {39.9261543081,116.1776545774};
AnnotationModel *model2 = [[AnnotationModel alloc] initWithCoordinate:coord2];
model2.title = @"苹果园";
model2.subtitle = @"石景山区苹果园";
CLLocationCoordinate2D coord3 = {39.8637359235,116.2854074940};
AnnotationModel *model3 = [[AnnotationModel alloc] initWithCoordinate:coord3];
model3.title = @"丰台公园";
model3.subtitle = @"丰台区丰台公园";
CLLocationCoordinate2D coord4 = {39.9128821069,116.3971393161};
AnnotationModel *model4 = [[AnnotationModel alloc] initWithCoordinate:coord4];
model4.title = @"故宫博物馆";
model4.subtitle = @"北京市故宫博物馆";
//第三步：将Annotation对象添加到MapView中
[mapView addAnnotation:model1];
[mapView addAnnotation:model2];
[mapView addAnnotation:model3];
[mapView addAnnotation:model4];
}
#pragma mark -MKMapViewDelegate
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
NSLog(@"userLocation:%@",userLocation);
}
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
NSLog(@"view is %@",view);
}
//第四步：最后实现MKMapViewDelegate协议方法，在该代理中创建MKPinAnnotationView标注视图
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
NSLog(@"annotation:%@",annotation);
//自己的位置也是一个标注视图，它是一个属于MKUserLocation这么一个类
if ([annotation isKindOfClass:[MKUserLocation class]]) {
//如果满足条件，说明当前用户自己的位置，不需要我们设置标注视图
return nil;
}
static NSString *identifier = @"annotationView";
//MKPinAnnotationView是一个大头针视图
MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annotationView == nil) {
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:nil reuseIdentifier:identifier];
//设置大头针的颜色
annotationView.pinColor = MKPinAnnotationColorPurple;
//设置显示从天而降的动画
annotationView.animatesDrop = YES;
//是否显示标题视图
annotationView.canShowCallout = YES;
//设置辅助视图
annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
}
//防止复用
annotationView.annotation = annotation;
return annotationView;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end