04-MapKit02-显示特定位置和区域

最新推荐文章于 2018-04-26 14:07:20 发布

hl201012828

最新推荐文章于 2018-04-26 14:07:20 发布

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本文链接：https://blog.youkuaiyun.com/hl201012828/article/details/52549970

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本文介绍了一个iOS应用中使用MapKit实现用户位置显示及跟踪的功能。通过设置地图的中心坐标和区域，确保地图始终展示用户当前的位置。此外，还实现了返回用户当前位置的功能。

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//// HMViewController.m// 04-MapKit02-显示特定位置和区域//// Created by apple on 14-8-7.// Copyright (c) 2014年 heima. All rights reserved.//#import "HMViewController.h"#import @interface HMViewController () @property (weak, nonatomic) IBOutlet MKMapView *mapView;- (IBAction)backToUserLocation;@end@implementation HMViewController- (void)viewDidLoad{ [super viewDidLoad]; // [self.mapView setCenterCoordinate:<#(CLLocationCoordinate2D)#>]; // 设置地图显示的中心位置// CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(39, 116);// [self.mapView setCenterCoordinate:coordinate animated:YES]; // 设置地图显示的区域// [self.mapView setRegion:<#(MKCoordinateRegion)#>];// CLLocationCoordinate2D center = CLLocationCoordinate2DMake(39, 116);// MKCoordinateSpan span = MKCoordinateSpanMake(0.1, 0.1);// MKCoordinateRegion region = MKCoordinateRegionMake(center, span);// [self.mapView setRegion:region animated:YES]; self.mapView.userTrackingMode = MKUserTrackingModeFollow; self.mapView.delegate = self;}#pragma mark - MKMapViewDelegate- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation{// [mapView setCenterCoordinate:userLocation.location.coordinate animated:YES]; CLLocationCoordinate2D center = userLocation.location.coordinate; MKCoordinateSpan span = MKCoordinateSpanMake(0.2509, 0.2256); MKCoordinateRegion region = MKCoordinateRegionMake(center, span); [self.mapView setRegion:region animated:YES];}//- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated//{// NSLog(@"%f %f", mapView.region.span.latitudeDelta, mapView.region.span.longitudeDelta);//}- (IBAction)backToUserLocation { CLLocationCoordinate2D center = self.mapView.userLocation.location.coordinate; [self.mapView setCenterCoordinate:center animated:YES];}@end