IOS地图开发

简介

IOS地图帮助我们定位位置,IOS地图使用 MapKit 框架。

实例步骤

1.创建一个简单的 View based application

2.选择项目文件,然后选择目标,然后添加MapKit.framework.

3.添加 Corelocation.framework

4.向 ViewController.xib 添加地图查看和创建 ibOutlet 并且命名为mapView。

5.通过"File-> New -> File... -> "选择 Objective C class创建一个新的文件,单击下一步

6."sub class of"为 NSObject,类作命名为MapAnnotation

7.选择创建

8.更新MapAnnotation.h ,如下所示

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface MapAnnotation : NSObject<MKAnnotation>
@property (nonatomic, strong) NSString *title;
@property (nonatomic, readwrite) CLLocationCoordinate2D coordinate;
- (id)initWithTitle:(NSString *)title andCoordinate:
 (CLLocationCoordinate2D)coordinate2d;
@end

9.更新MapAnnotation.m ,如下所示

#import "MapAnnotation.h"
@implementation MapAnnotation
-(id)initWithTitle:(NSString *)title andCoordinate:
 (CLLocationCoordinate2D)coordinate2d{ 
 self.title = title;
 self.coordinate =coordinate2d;
 return self;
}
@end

10.更新ViewController.h ,如下所示

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>
@interface ViewController : UIViewController<MKMapViewDelegate>
{
 MKMapView *mapView;
}
@end

11.更新ViewController.m ,如下所示

#import "ViewController.h"
#import "MapAnnotation.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad
{
 [super viewDidLoad];
 mapView = [[MKMapView alloc]initWithFrame:
 CGRectMake(10, 100, 300, 300)];
 mapView.delegate = self;
 mapView.centerCoordinate = CLLocationCoordinate2DMake(37.32, -122.03);
 mapView.mapType = MKMapTypeHybrid;
 CLLocationCoordinate2D location;
 location.latitude = (double) 37.332768;
 location.longitude = (double) -122.030039;
 // Add the annotation to our map view
 MapAnnotation *newAnnotation = [[MapAnnotation alloc]
 initWithTitle:@"Apple Head quaters" andCoordinate:location];
 [mapView addAnnotation:newAnnotation];
 CLLocationCoordinate2D location2;
 location2.latitude = (double) 37.35239;
 location2.longitude = (double) -122.025919;
 MapAnnotation *newAnnotation2 = [[MapAnnotation alloc] 
 initWithTitle:@"Test annotation" andCoordinate:location2];
 [mapView addAnnotation:newAnnotation2];
 [self.view addSubview:mapView];
}
// When a map annotation point is added, zoom to it (1500 range)
- (void)mapView:(MKMapView *)mv didAddAnnotationViews:(NSArray *)views
{
 MKAnnotationView *annotationView = [views objectAtIndex:0];
 id <MKAnnotation> mp = [annotationView annotation];
 MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance
 ([mp coordinate], 1500, 1500);
 [mv setRegion:region animated:YES];
 [mv selectAnnotation:mp animated:YES];
}
- (void)didReceiveMemoryWarning
{
 [super didReceiveMemoryWarning];
 // Dispose of any resources that can be recreated.
}
@end

输出

运行应用程序时,输出结果如下

mapOutput1

当我们向上滚动地图时,输出结果如下

mapOutput2

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