地图与定位之大头针视图
该博文在上一博文地图与定位之地图、大头针的基础上完成。
在MyAnnotation.h 中增加属性
#import <Foundation/Foundation.h> #import <MapKit/MapKit.h> //MKAnnotation是一个协议 ,添加大头针久需要实现该协议 //coordinate 属性是必须的,所以需要实现该属性 @interface MyAnnotation : NSObject<MKAnnotation> @property(nonatomic,strong)UIImage *image; -(id)initWithCoordinate:(CLLocationCoordinate2D)coordinate title:(NSString *)title subtitle:(NSString *)subtitle; @end
在ViewController.m中
//
// ViewController.m
// MapView
//
// Created by City--Online on 15/4/17.
// Copyright (c) 2015年 CYW. All rights reserved.
//
#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#import "MyAnnotation.h"
@interface ViewController ()<CLLocationManagerDelegate,MKMapViewDelegate>
@property(nonatomic,strong)MKMapView *mapView;
@property(nonatomic,strong)CLLocationManager *locationManager;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_locationManager=[[CLLocationManager alloc]init];
BOOL enable=[CLLocationManager locationServicesEnabled];
NSLog(@"%d",[CLLocationManager authorizationStatus]);
if (!enable) {
NSLog(@"用户未开启定位服务,无法定位");
return;
}
else if ([CLLocationManager authorizationStatus]<3)
{
[_locationManager requestWhenInUseAuthorization];
}
CLLocationDistance distance=10.0;
_locationManager.distanceFilter=distance;
_locationManager.delegate=self;
_locationManager.desiredAccuracy=kCLLocationAccuracyBest;
[_locationManager startUpdatingLocation];
self.mapView=[[MKMapView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
//地图类型
// typedef NS_ENUM(NSUInteger, MKMapType) {
// MKMapTypeStandard = 0, //标准地图
// MKMapTypeSatellite, //卫星地图
// MKMapTypeHybrid //混合地图
// }
self.mapView.mapType=MKMapTypeStandard;
//是否定位当前位置 否显示当前位置
self.mapView.showsUserLocation=YES;
//代理设置
self.mapView.delegate=self;
// typedef struct {
// CLLocationCoordinate2D center;
// MKCoordinateSpan span;
// } MKCoordinateRegion;
//中心点经纬度
CLLocationCoordinate2D locationCoordinate2D;
locationCoordinate2D.latitude=22.544349;
locationCoordinate2D.longitude= 113.94787;
//范围比例尺
MKCoordinateSpan coordinateSpan;
//纬度
coordinateSpan.latitudeDelta=0.05;
//经度
coordinateSpan.longitudeDelta=0.05;
//设置显示区域
MKCoordinateRegion coordinateRegion;
coordinateRegion.center=locationCoordinate2D;
coordinateRegion.span=coordinateSpan;
[self.mapView setRegion:coordinateRegion animated:YES];
// self.mapView.region=coordinateRegion;
// typedef NS_ENUM(NSInteger, MKUserTrackingMode) {
// MKUserTrackingModeNone = 0, // the user's location is not followed
// MKUserTrackingModeFollow, // the map follows the user's location
// MKUserTrackingModeFollowWithHeading, // the map follows the user's location and heading
// }
self.mapView.userTrackingMode=MKUserTrackingModeFollow;
[self.view addSubview:self.mapView];
UISegmentedControl *segmentedControl=[[UISegmentedControl alloc]initWithItems:@[@"普通地图",@"卫星地图",@"混合地图"]];
segmentedControl.selectedSegmentIndex=0;
[segmentedControl addTarget:self action:@selector(selectSegmentIndex:) forControlEvents:UIControlEventValueChanged];
self.navigationItem.titleView=segmentedControl;
//定义大头针类
MyAnnotation *annotation=[[MyAnnotation alloc]initWithCoordinate:locationCoordinate2D title:@"主标题" subtitle:@"子标题"];
annotation.image=[UIImage imageNamed:@"map.png"];
[self.mapView addAnnotation:annotation];
//定义长按手势
UILongPressGestureRecognizer *longPressGestureRecognizer=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(LongTap:)];
[self.mapView addGestureRecognizer:longPressGestureRecognizer];
}
-(void)LongTap:(UILongPressGestureRecognizer *)gestureRecongizer
{
if (gestureRecongizer.state==UIGestureRecognizerStateBegan) {
NSLog(@"开始长按");
//获取mapview手指点击位置
CGPoint point=[gestureRecongizer locationInView:self.mapView];
//转化为经纬度
CLLocationCoordinate2D coordinate2D=[self.mapView convertPoint:point toCoordinateFromView:self.mapView];
//把当前位置转为地理位置
CLGeocoder *geocoder=[[CLGeocoder alloc]init];
CLLocation *location=[[CLLocation alloc]initWithLatitude:coordinate2D.latitude longitude:coordinate2D.longitude];
[geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
if (error) {
NSLog(@"失败:%@",error);
return ;
}
if (placemarks.count>0) {
CLPlacemark *placemark=[placemarks firstObject];
MyAnnotation *annotation=[[MyAnnotation alloc]initWithCoordinate:coordinate2D title:placemark.name subtitle:placemark.thoroughfare];
annotation.image=[UIImage imageNamed:@"map.png"];
NSLog(@"城市：%@",placemark.locality);
NSLog(@"区：%@",placemark.subLocality);
NSLog(@"省份：%@",placemark.administrativeArea);
[self.mapView addAnnotation:annotation];
}
}];
}
else if(gestureRecongizer.state==UIGestureRecognizerStateChanged)
{
NSLog(@"长按移动");
}
else if(gestureRecongizer.state==UIGestureRecognizerStateEnded)
{
NSLog(@"长按结束");
}
}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
if (locations.count>0) {
CLLocation *location=[locations firstObject];
CLLocationCoordinate2D locationCoordinate2D =location.coordinate;
[self.mapView setRegion:MKCoordinateRegionMake(locationCoordinate2D, self.mapView.region.span) animated:YES];
NSLog(@"%lf ,%lf",locationCoordinate2D.longitude,locationCoordinate2D.longitude);
MyAnnotation *annotation=[[MyAnnotation alloc]initWithCoordinate:locationCoordinate2D title:@"定位位置" subtitle:@"子标题"];
annotation.image=[UIImage imageNamed:@"map.png"];
[self.mapView addAnnotation:annotation];
}
}
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
//由于当前位置的标注也是一个大头针，所以此时需要判断，此代理方法返回nil使用默认大头针视图
if ([annotation isKindOfClass:[MyAnnotation class]]) {
static NSString *key=@"annotation";
MKAnnotationView *annotationView=[self.mapView dequeueReusableAnnotationViewWithIdentifier:key];
if (annotationView==nil) {
annotationView=[[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:key];
//允许交互点击
annotationView.canShowCallout=true;
//定义详情视图偏移量
annotationView.calloutOffset=CGPointMake(0, 1);
//详情左视图
UIImageView *imgView=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"email.png"]];
imgView.frame=CGRectMake(20, 20, 40, 40);
annotationView.leftCalloutAccessoryView=imgView;
UIButton *btn=[UIButton buttonWithType:UIButtonTypeInfoDark];
btn.frame=CGRectMake(20, 20, 40, 40);
annotationView.rightCalloutAccessoryView=btn;
}
//修改大头针视图
//重新设置此类大头针视图的大头针模型(因为有可能是从缓存池中取出来的，位置是放到缓存池时的位置)
annotationView.annotation=annotation;
// //设置大头针图片
annotationView.image=((MyAnnotation *)annotation).image;
return annotationView;
}
else
{
return nil;
}
}
//大头针选中
-(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
MyAnnotation *annotation=view.annotation;
NSLog(@"%@",annotation.title);
}
//定位失败
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(@"定位失败");
NSLog(@"%@",error);
}
- (void)selectSegmentIndex:(UISegmentedControl *)control
{
NSInteger index = control.selectedSegmentIndex;
/*
MKMapTypeStandard 普通地图(标准地图),
MKMapTypeSatellite 卫星地图,
MKMapTypeHybrid 混合地图
*/
MKMapType mapType;
switch (index)
{
//普通地图
case 0:
mapType = MKMapTypeStandard;
break;
//卫星地图
case 1:
mapType = MKMapTypeSatellite;
break;
//普通和卫星的混合地图
case 2:
mapType = MKMapTypeHybrid;
break;
default:
break;
}
//改变地图类型
self.mapView.mapType = mapType;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
