iOS开发-苹果自带地图简单使用

【实现功能】：

1.展示简单地图

2.显示用户当前位置

3.控制视图大小

4.大头针点击显示信息

5.放置目的地大头针

6.当前位置与目的地连线

【实现步骤】

1.导入两个需要的框架：CoreLocation.framework和MapKit.framework

2.引入头文件：

#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>

3.需要两个类的变量，这里定义为属性：

@property (nonatomic, retain)MKMapView *mapView;
@property (nonatomic, retain)CLLocationManager *locaManager;

4.别忘了接受协议

@interface ViewController ()<CLLocationManagerDelegate,MKMapViewDelegate>

5.OK开始上代码

 1 - (void)viewDidLoad{
 2     [super viewDidLoad];
 3     
 4     //初始化位置管理
 5     self.locaManager = [[CLLocationManager alloc] init];
 6     //如果设备在iOS8及以上，得先弹框让用户授权，才能获得定位权限
 7     if ([[UIDevice currentDevice].systemVersion doubleValue] >= 8.0) {
 8         [self.locaManager requestWhenInUseAuthorization];
 9     }
10     //设置代理
11     self.locaManager.delegate = self;
12     //开始定位
13     [self.locaManager startUpdatingLocation];
14     
15     
16     //初始化地图视图
17     self.mapView = [[MKMapView alloc] initWithFrame:self.view.frame];
18     //设置地图样式为基本样式（这里有三种样式）
19     self.mapView.mapType = MKMapTypeStandard;
20     //是否显示当前位置
21     self.mapView.showsUserLocation = YES;
22     //设置代理
23     self.mapView.delegate = self;
24     [self.view addSubview:self.mapView];
25 }

代理方法的实现

#pragma mark -- mapViewDelegate

- (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView{
    NSLog(@"加载完毕");
}
- (void)mapViewWillStartLocatingUser:(MKMapView *)mapView{
    NSLog(@"将要获取用户位置");
}

- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation{
    //点击大头针，出现信息
    userLocation.title = @"丁健";
    userLocation.subtitle = @"dingjianjaja";
    //让地图视图转移到用户当前位置
    [mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
    //设置精度，以及显示用户所在地
    MKCoordinateSpan span = MKCoordinateSpanMake(1, 1);//比例尺为1：10^5,1厘米代表1公里
    MKCoordinateRegion region = MKCoordinateRegionMake(userLocation.location.coordinate, span);
    [mapView setRegion:region animated:YES];
}

6.运行

发现不显示用户位置，原因是在iOS8以后程序使用定位有三种状态，即试用期间/始终/永不，所以我们需要在plist文件中配置：试用期间或者始终

NSLocationWhenInUseUsageDescription

简单的展示地图自己位置就完成了，下面会继续加入目的地大头针，以及连接当前位置与目的地，并计算直线距离的功能。

1.要想在地图上连接2个点，首先需要将两个点加入到一个数组中

起点:

1 CLLocationCoordinate2D coord1;
2     coord1.latitude = userLocation.location.coordinate.latitude;
3     coord1.longitude = userLocation.location.coordinate.longitude;
4 
5     coords[0] = coord1;

终点：

1 coords[1] = coord;

coords数组中有两个元素

下面开始画线链接

1 MKPolyline *line =  [MKPolyline polylineWithCoordinates:coords count:2];//执行画线方法;
2     [self.mapView addOverlay: line];

还没完，最后要实现代理方法确定画线的样式

 1 #pragma mark 地图两点画线代理方法
 2 - (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id <MKOverlay>)overlay
 3 {
 4     if ([overlay isKindOfClass:[MKPolyline class]])
 5     {
 6         MKPolylineView *lineview=[[MKPolylineView alloc] initWithOverlay:overlay];
 7         lineview.strokeColor=[[UIColor blueColor] colorWithAlphaComponent:0.5];
 8         lineview.lineWidth=2.0;
 9         
10         return lineview;
11     }else{
12         return nil;
13     }
14 }

OK完成效果如图：

计算两点距离

//计算距离
    CLLocationDistance meters=[self.currentLocation distanceFromLocation:loc];

通过经纬度编码为地名

1 [_geocoder reverseGeocodeLocation:loc completionHandler:^(NSArray *placemarks, NSError *error) {
2         CLPlacemark *placemark=[placemarks firstObject];
3         NSString *str = [placemark.addressDictionary valueForKey:@"Name"];
4         _destinationLocalLabel.text = [NSString stringWithFormat:@"目的地:%@",str];
5     }];

完整代码：

  1 //
  2 //  ViewController.m
  3 //  MapDemo
  4 //
  5 //  Created by dingjianjaja on 15/12/11.
  6 //  Copyright © 2015年 dingjianjaja. All rights reserved.
  7 //
  8 
  9 #import "ViewController.h"
 10 #import <MapKit/MapKit.h>
 11 #import <CoreLocation/CoreLocation.h>
 12 @interface ViewController ()<CLLocationManagerDelegate,MKMapViewDelegate>
 13 {
 14     CLLocationCoordinate2D coords[2];
 15 }
 16 @property (nonatomic, retain)MKMapView *mapView;
 17 @property (nonatomic, retain)CLLocationManager *locaManager;
 18 
 19 @property (nonatomic, retain)CLLocation *currentLocation;
 20 /**
 21  *  放置大头针按钮
 22  */
 23 @property (nonatomic, retain)UIButton *setPosationBtn;
 24 /**
 25  *  经度输入框
 26  */
 27 @property (nonatomic, retain)UITextField *longitudeText;
 28 /**
 29  *  纬度输入框
 30  */
 31 @property (nonatomic, retain)UITextField *latitudeText;
 32 /**
 33  *  画线点的数组
 34  */
 35 @property (nonatomic, retain)NSMutableArray *pointArr;
 36 /**
 37  *  当前地点
 38  */
 39 @property (nonatomic, retain)UILabel *currentLocalLabel;
 40 /**
 41  *  目的地地点
 42  */
 43 @property (nonatomic, retain)UILabel *destinationLocalLabel;
 44 /**
 45  *  相距多远
 46  */
 47 @property (nonatomic, retain)UILabel *distenceLabel;
 48 
 49 @property (nonatomic, retain)CLGeocoder *geocoder;
 50 @end
 51 
 52 @implementation ViewController
 53 
 54 - (NSArray *)pointArr{
 55     if (!_pointArr) {
 56         _pointArr = [NSMutableArray array];
 57     }
 58     return _pointArr;
 59 }
 60 
 61 - (void)viewDidLoad{
 62     [super viewDidLoad];
 63     
 64     //初始化位置管理
 65     self.locaManager = [[CLLocationManager alloc] init];
 66     //如果设备在iOS8及以上，得先弹框让用户授权，才能获得定位权限
 67     if ([[UIDevice currentDevice].systemVersion doubleValue] >= 8.0) {
 68         [self.locaManager requestWhenInUseAuthorization];
 69     }
 70     //设置代理
 71     self.locaManager.delegate = self;
 72     //开始定位
 73     [self.locaManager startUpdatingLocation];
 74     
 75     
 76     //初始化地图视图
 77     self.mapView = [[MKMapView alloc] initWithFrame:self.view.frame];
 78     //设置地图样式为基本样式（这里有三种样式）
 79     self.mapView.mapType = MKMapTypeStandard;
 80     //是否显示当前位置
 81     self.mapView.showsUserLocation = YES;
 82     //设置代理
 83     self.mapView.delegate = self;
 84     [self.view addSubview:self.mapView];
 85     
 86     //放置大头针按钮
 87     _setPosationBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
 88     _setPosationBtn.frame = CGRectMake(10, 100, 100, 30);
 89     [_setPosationBtn setTitle:@"放置大头针" forState:UIControlStateNormal];
 90     _setPosationBtn.backgroundColor = [UIColor orangeColor];
 91     _setPosationBtn.alpha = 0.4;
 92     [_setPosationBtn addTarget:self action:@selector(setPositionBtnClick) forControlEvents:UIControlEventTouchUpInside];
 93     [self.view addSubview:_setPosationBtn];
 94     
 95     //经纬度文本框
 96     _longitudeText = [[UITextField alloc] initWithFrame:CGRectMake(10, 20, 100, 30)];
 97     _longitudeText.backgroundColor = [UIColor grayColor];
 98     _longitudeText.alpha = 0.5;
 99     [self.view addSubview:_longitudeText];
100     
101     _latitudeText = [[UITextField alloc] initWithFrame:CGRectMake(10, 60, 100, 30)];
102     _latitudeText.backgroundColor = [UIColor grayColor];
103     _latitudeText.alpha = 0.5;
104     [self.view addSubview:_latitudeText];
105     
106     
107     
108     //当前地点
109     _currentLocalLabel = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMaxX(_longitudeText.frame) + 10, 20, 247, 30)];
110     _currentLocalLabel.backgroundColor = [UIColor grayColor];
111     _currentLocalLabel.text = @"当前地点:";
112     _currentLocalLabel.font = [UIFont systemFontOfSize:12];
113     [self.view addSubview:_currentLocalLabel];
114     
115     //目标地点
116     _destinationLocalLabel = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMaxX(_longitudeText.frame) + 10, 60, 247, 30)];
117     _destinationLocalLabel.backgroundColor = [UIColor grayColor];
118     _destinationLocalLabel.text = @"目标地点:";
119     _destinationLocalLabel.font = [UIFont systemFontOfSize:12];
120     [self.view addSubview:_destinationLocalLabel];
121     
122     //距离
123     _distenceLabel = [[UILabel alloc] initWithFrame:CGRectMake(CGRectGetMaxX(_setPosationBtn.frame) + 10, 100, 247, 30)];
124     _distenceLabel.backgroundColor = [UIColor grayColor];
125     _distenceLabel.text = @"相距距离:";
126     _distenceLabel.font = [UIFont systemFontOfSize:12];
127     [self.view addSubview:_distenceLabel];
128     
129     _geocoder=[[CLGeocoder alloc]init];
130     
131 }
132 
133 #pragma mark 根据坐标取得地名
134 -(void)getAddressByLatitude:(CLLocationDegrees)latitude longitude:(CLLocationDegrees)longitude{
135     //反地理编码
136     CLLocation *location=[[CLLocation alloc]initWithLatitude:latitude longitude:longitude];
137     [_geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
138         CLPlacemark *placemark=[placemarks firstObject];
139         NSString *str = [placemark.addressDictionary valueForKey:@"Name"];
140         NSLog(@"详细信息:%@",str);
141     }];
142 }
143 
144 
145 
146 - (void)setPositionBtnClick{
147     NSLog(@"放置大头针");
148     
149     
150     //创建CLLocation 设置经纬度
151     CLLocation *loc = [[CLLocation alloc]initWithLatitude:[[self.latitudeText text] floatValue] longitude:[[self.longitudeText text] floatValue]];
152     CLLocationCoordinate2D coord = [loc coordinate];
153     //创建标题
154     NSString *titile = [NSString stringWithFormat:@"%f,%f",coord.latitude,coord.longitude];
155     MyPoint *myPoint = [[MyPoint alloc] initWithCoordinate:coord andTitle:titile];
156     //添加标注
157     [self.mapView addAnnotation:myPoint];
158     
159     //放大到标注的位置
160     MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(coord, 80000, 80000);
161     [self.mapView setRegion:region animated:YES];
162     
163     //声明一个数组  用来存放画线的点
164     
165     coords[1] = coord;
166     MKPolyline *line =  [MKPolyline polylineWithCoordinates:coords count:2];//执行画线方法;
167     [self.mapView addOverlay: line];
168     
169     
170     //计算距离
171     CLLocationDistance meters=[self.currentLocation distanceFromLocation:loc];
172     _distenceLabel.text = [NSString stringWithFormat:@"相距距离:%.2f千米",meters/1000];
173     
174     [_geocoder reverseGeocodeLocation:loc completionHandler:^(NSArray *placemarks, NSError *error) {
175         CLPlacemark *placemark=[placemarks firstObject];
176         NSString *str = [placemark.addressDictionary valueForKey:@"Name"];
177         _destinationLocalLabel.text = [NSString stringWithFormat:@"目的地:%@",str];
178     }];
179 
180     
181     
182 }
183 
184 #pragma mark 地图两点画线代理方法
185 - (MKOverlayView *)mapView:(MKMapView *)mapView viewForOverlay:(id <MKOverlay>)overlay
186 {
187     if ([overlay isKindOfClass:[MKPolyline class]])
188     {
189         MKPolylineView *lineview=[[MKPolylineView alloc] initWithOverlay:overlay];
190         lineview.strokeColor=[[UIColor blueColor] colorWithAlphaComponent:0.5];
191         lineview.lineWidth=2.0;
192         
193         return lineview;
194     }else{
195         return nil;
196     }
197 }
198 
199 
200 
201 #pragma mark -- mapViewDelegate
202 
203 - (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView{
204     NSLog(@"加载完毕");
205 }
206 - (void)mapViewWillStartLocatingUser:(MKMapView *)mapView{
207     NSLog(@"将要获取用户位置");
208 }
209 
210 - (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation{
211     //点击大头针，出现信息
212     userLocation.title = @"丁健";
213     
214     self.currentLocation = [[CLLocation alloc] initWithLatitude:userLocation.location.coordinate.latitude longitude:userLocation.location.coordinate.longitude];
215     NSLog(@"当前位置%@",self.currentLocation);
216     
217     
218     //地理反编码
219     [_geocoder reverseGeocodeLocation:self.currentLocation completionHandler:^(NSArray *placemarks, NSError *error) {
220         CLPlacemark *placemark=[placemarks firstObject];
221         NSString *str = [placemark.addressDictionary valueForKey:@"Name"];
222         _currentLocalLabel.text = [NSString stringWithFormat:@"当前地点:%@",str];
223     }];
224     
225     
226     //让地图视图转移到用户当前位置
227     [mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
228     
229     CLLocationCoordinate2D coord1;
230     coord1.latitude = userLocation.location.coordinate.latitude;
231     coord1.longitude = userLocation.location.coordinate.longitude;
232 
233     coords[0] = coord1;
234     //设置精度，以及显示用户所在地
235     MKCoordinateSpan span = MKCoordinateSpanMake(1, 1);//比例尺为1：10^5,1厘米代表1公里
236     MKCoordinateRegion region = MKCoordinateRegionMake(userLocation.location.coordinate, span);
237     [mapView setRegion:region animated:YES];
238 }
239 
240 
241 - (void)didReceiveMemoryWarning {
242     [super didReceiveMemoryWarning];
243     // Dispose of any resources that can be recreated.
244 }
245 
246 @end
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原文地址：https://www.cnblogs.com/dingjianjaja/p/5040944.html