ios地图小例子和手势的使用 供大家参考一下呦

最近做了一个小例子 做点笔记 供刚入职场的菜鸟学习，也供自己记忆。

目标：在地图上加上标记  同时复习一下手势的使用

效果图：

具体代码

导入框架：MapKit.framework

创建一个新类 继承NSObject  叫做MyAnnotation   并在后边加上<MKAnnotation>

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface MyAnnotation : NSObject<MKAnnotation>
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@end

 viemController.m的代码

#import "ViewController.h"
#import <MapKit/MapKit.h>
#import "MyAnnotation.h"
@interface ViewController ()<MKMapViewDelegate>
@property(nonatomic,strong)MKMapView *mapView;//添加一个MApView
@property(nonatomic,strong)MKAnnotationView *annotationView;//添加一个标记view
@end

//对mapView 的响应的设置并将它加到跟视图中

//添加一个标记

//创建手势实现长按能够加一个标记

- (void)viewDidLoad {
    [super viewDidLoad];
    
    //对mapView 的响应的设置并将它加到跟视图中
    _mapView = [[MKMapView alloc]initWithFrame:self.view.frame];
    _mapView.mapType = MKMapTypeStandard;
    _mapView.delegate = self;
    [self.view addSubview:_mapView];
    
    //对annotation 的设置
    _annotationView = [[MKAnnotationView alloc]initWithFrame:self.view.frame];
    
    
    //添加一个标记
    //设置标记
    MyAnnotation *annotation = [[MyAnnotation alloc]init];
    //设置经纬度
    annotation.title = @"中国";
    annotation.subtitle = @"河北";
    annotation.coordinate =CLLocationCoordinate2DMake(40, 110);
    
    [self.mapView addAnnotation:annotation];
    //设置显示标识的内容
    [_mapView setCenterCoordinate:annotation.coordinate animated:YES];
    
    //创建手势实现长按能够加一个标记
    UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];
    [self.view addGestureRecognizer:longPress];
    
}

//手势长按的实现

-(void)longPress:(UILongPressGestureRecognizer *)sender
{
    //获得点击点的坐标
    CGPoint point = [sender locationInView:self.view];
    //将点击的地图上点转换成经纬点
   CLLocationCoordinate2D Mycoordinate= [self.mapView convertPoint:point toCoordinateFromView:self.mapView];
    MyAnnotation *annotation = [[MyAnnotation alloc]init];
    annotation.coordinate = Mycoordinate;
    annotation.title = @"河北";
    annotation.subtitle = @"石家庄";
    
    [self.mapView addAnnotation:annotation];
    
}

#pragma mark-mapView的代理方法-显示标识的方法

-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
    //创建一个标识的ID
    static NSString *annotationID = @"annotation";
    
    //先从用户的缓存里找大头针视图
    MKPinAnnotationView *view = (MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationID];
    //如果没有大头针视图,自己进行创建
    if(!view)
    {
        view = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annotationID];
    }
    //对大头针视图的属性进行设置
    //设置标记为传进来的标记  显示气泡 大头针的颜色
    view.annotation = annotation;
    view.canShowCallout = YES;
    view.pinColor  = MKPinAnnotationColorRed;
    
    //左边的副视图
    view.leftCalloutAccessoryView =[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"0.png"]];
    
    return view;
}