📜  iOS-访问地图

📅  最后修改于: 2020-12-08 06:23:08             🧑  作者: Mango


地图对我们找到位置始终很有帮助。使用MapKit框架将地图集成到iOS中。

涉及的步骤

步骤1-创建一个简单的基于视图的应用程序。

步骤2-选择您的项目文件,然后选择目标,然后添加MapKit.framework。

步骤3-我们还应该添加Corelocation.framework。

步骤4-将MapView添加到ViewController.xib,并创建一个ibOutlet,并将其命名为mapView。

步骤5-通过选择文件→新建→文件…→选择Objective C类来创建一个新文件,然后单击下一步。

步骤6-将类命名为MapAnnotation,将“ sub class of”作为NSObject。

步骤7-选择创建。

步骤8-更新MapAnnotation.h如下-

#import 
#import 

@interface MapAnnotation : NSObject
@property (nonatomic, strong) NSString *title;
@property (nonatomic, readwrite) CLLocationCoordinate2D coordinate;

- (id)initWithTitle:(NSString *)title andCoordinate:
   (CLLocationCoordinate2D)coordinate2d;

@end

步骤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

步骤10-更新ViewController.h如下-

#import 
#import 
#import 

@interface ViewController : UIViewController {
   MKMapView *mapView;
}
@end

步骤11-更新ViewController.m如下-

#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  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,将得到如下所示的输出-

iOS教程

当我们向上滚动地图时,将得到如下所示的输出-

iOS教程