IOS-CoreLocation

  1 //
  2 //  ViewController.m
  3 //  IOS_0403_导航
  4 //
  5 //  Created by ma c on 16/4/3.
  6 //  Copyright © 2016年 博文科技. All rights reserved.
  7 //
  8 
  9 #import "ViewController.h"
 10 #import <CoreLocation/CoreLocation.h>
 11 
 12 @interface ViewController ()<CLLocationManagerDelegate>
 13 
 14 @property (nonatomic, strong) CLLocationManager *mgr;
 15 
 16 //上一次位置
 17 @property (nonatomic, strong) CLLocation *previousLocation;
 18 //总路程
 19 @property (nonatomic, assign) CLLocationDistance sumDistance;
 20 //总时间
 21 @property (nonatomic, assign) NSTimeInterval sumTime;
 22 
 23 @property (nonatomic, strong) UIImageView *commpasspointer;
 24 
 25 
 26 @end
 27 
 28 @implementation ViewController
 29 
 30 /*
 31  注意：iOS7只要定位，系统就会自动要求用户对你的应用程序授权，但是从iOS8开始想要定位
 32  必须自己主动要求用户授权，然后在Info.plist文件中配置一项属性才能弹出授权窗口
 33  NSLocationWhenInUseDescription，允许在前台获取GPS的描述
 34  NSLocationAlwaysUsageDescription，允许在后台获取GPS的描述
 35  
 36  CLLocation
 37  location.coordinate; 坐标, 包含经纬度
 38  location.altitude; 设备海拔高度 单位是米
 39  location.course; 设置前进方向 0表示北 90东 180南 270西
 40  location.horizontalAccuracy; 水平精准度
 41  location.verticalAccuracy; 垂直精准度
 42  location.timestamp; 定位信息返回的时间
 43  location.speed; 设备移动速度 单位是米/秒, 适用于行车速度而不太适用于不行
 44  
 45  CLHeading
 46  magneticHeading 设备与磁北的相对角度
 47  trueHeading 设置与真北的相对角度, 必须和定位一起使用, iOS需要设置的位置来计算真北
 48  真北始终指向地理北极点
 49  磁北对应随着时间变化的地球磁场北极
 50  
 51  CLRegion   代表一个区域
 52  >CLCircularRegion  圆形区域
 53  >CLBeaconRegion 蓝牙信号区域
 54  */
 55 
 56 - (void)viewDidLoad {
 57     [super viewDidLoad];
 58     self.view.backgroundColor = [UIColor cyanColor];
 59     
 60     [self test];
 61     
 62     //添加指南针图片
 63     UIImageView *imgView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bg_compasspointer"]];
 64     imgView.center = self.view.center;
 65     [self.view addSubview:imgView];
 66     self.commpasspointer = imgView;
 67 }
 68 
 69 - (void)test
 70 {
 71     //1.创建管理者
 72 //    CLLocationManager *mgr = [[CLLocationManager alloc] init];
 73     //2.设置代理
 74     self.mgr.delegate = self;
 75     
 76     //设置获取位置精确度
 77     self.mgr.desiredAccuracy = kCLLocationAccuracyBest;
 78     //设置多久获取一次
 79     self.mgr.distanceFilter = 10;
 80 
 81     if ([[UIDevice currentDevice].systemVersion doubleValue] > 8.0) {
 82         //主动请求授权
 83         [self.mgr requestAlwaysAuthorization];
 84     }
 85     
 86     //3.开始定位
 87     [self.mgr startUpdatingLocation];
 88     
 89     //3.开始获取用户方向
 90     [self.mgr startUpdatingHeading];
 91     
 92     //3.开始区域检测
 93     //创建中心点
 94     CLLocationCoordinate2D center = CLLocationCoordinate2DMake(41, 116);
 95     //创建圆形区域
 96     CLCircularRegion *circularRegion = [[CLCircularRegion alloc] initWithCenter:center radius:500 identifier:@"北京"];
 97     [self.mgr startMonitoringForRegion:circularRegion];
 98     
 99 }
100 
101 
102 #pragma mark - CLLocationManagerDelegate
103 //当获取到位置时调用
104 - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
105 {
106     //获取当前位置
107     CLLocation *newLocation = [locations lastObject];
108     
109     NSLog(@"%f,%f",newLocation.coordinate.latitude,newLocation.coordinate.longitude);
110 
111     if (self.previousLocation == nil) {
112         
113         //计算两次之间的位置(单位为米)
114         CLLocationDistance distance = [newLocation distanceFromLocation:self.previousLocation];
115         //计算两次之间的时间（单位为秒）
116         NSTimeInterval dTime = [newLocation.timestamp timeIntervalSinceDate:self.previousLocation.timestamp];
117         //计算速度
118         CGFloat speed = distance / dTime;
119         
120         //累加时间
121         self.sumTime += dTime;
122         //累加路程
123         self.sumDistance += distance;
124         //计算平均速度
125         CGFloat averSpeed = self.sumDistance / self.sumTime;
126     }
127     //记录上一次位置
128     self.previousLocation = newLocation;
129     
130 }
131 
132 //当获取到用户方向时调用
133 - (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading
134 {
135     //1.将角度转换成弧度
136     CGFloat angle = newHeading.magneticHeading * M_PI / 180;
137     //2.旋转图片
138     self.commpasspointer.transform = CGAffineTransformIdentity;
139     self.commpasspointer.transform = CGAffineTransformMakeRotation(-angle);
140 }
141 
142 //进入监听区域时调用
143 - (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
144 {
145     NSLog(@"didEnterRegion");
146 }
147 
148 //离开监听区域时调用
149 - (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
150 {
151     NSLog(@"didExitRegion");
152 }
153 
154 #pragma mark - 懒加载
155 - (CLLocationManager *)mgr
156 {
157     if(!_mgr){
158         _mgr = [[CLLocationManager alloc] init];
159         
160     }
161     return _mgr;
162 }
163 
164 
165 @end

  1 //
  2 //  ViewController.m
  3 //  IOS_0403_地理编码
  4 //
  5 //  Created by ma c on 16/4/3.
  6 //  Copyright © 2016年 博文科技. All rights reserved.
  7 //
  8 
  9 #import "ViewController.h"
 10 #import <CoreLocation/CoreLocation.h>
 11 
 12 @interface ViewController ()
 13 //-------------------正向地理编码----------------//
 14 /**
 15  *  监听地理编码点击事件
 16  */
 17 - (IBAction)geocodeBtnClick;
 18 /**
 19  *  需要编码的地址容器
 20  */
 21 @property (weak, nonatomic) IBOutlet UITextField *addressField;
 22 /**
 23  *  经度容器
 24  */
 25 @property (weak, nonatomic) IBOutlet UILabel *longitudeLabel;
 26 /**
 27  *  纬度容器
 28  */
 29 @property (weak, nonatomic) IBOutlet UILabel *latitudeLabel;
 30 /**
 31  *  详情容器
 32  */
 33 @property (weak, nonatomic) IBOutlet UILabel *detailAddressLabel;
 34 /**
 35  *  地理编码对象
 36  */
 37 
 38 //-------------------反向地理编码----------------//
 39 - (IBAction)reverseGeocode;
 40 @property (weak, nonatomic) IBOutlet UITextField *longtitudeField;
 41 @property (weak, nonatomic) IBOutlet UITextField *latitudeField;
 42 @property (weak, nonatomic) IBOutlet UILabel *reverseDetailAddressLabel;
 43 
 44 
 45 @property (nonatomic ,strong) CLGeocoder *geocoder;
 46 
 47 @end
 48 
 49 @implementation ViewController
 50 
 51 - (void)viewDidLoad {
 52     [super viewDidLoad];
 53 }
 54 //正向地理编码
 55 - (IBAction)geocodeBtnClick
 56 {
 57     // 0.获取用户输入的位置
 58     NSString *addressStr = self.addressField.text;
 59     if (addressStr == nil || addressStr.length == 0) {
 60         NSLog(@"请输入地址");
 61         return;
 62     }
 63     
 64     
 65     // 1.创建地理编码对象
 66     
 67     // 2.利用地理编码对象编码
 68     // 根据传入的地址获取该地址对应的经纬度信息
 69     [self.geocoder geocodeAddressString:addressStr completionHandler:^(NSArray *placemarks, NSError *error) {
 70         
 71         if (placemarks.count == 0 || error != nil) {
 72             return ;
 73         }
 74         // placemarks地标数组, 地标数组中存放着地标, 每一个地标包含了该位置的经纬度以及城市/区域/国家代码/邮编等等...
 75         // 获取数组中的第一个地标
 76         CLPlacemark *placemark = [placemarks firstObject];
 77         //        for (CLPlacemark  *placemark in placemarks) {
 78         //            NSLog(@"%@ %@ %f %f", placemark.name, placemark.addressDictionary, placemark.location.coordinate.latitude, placemark.location.coordinate.longitude);
 79         self.latitudeLabel.text = [NSString stringWithFormat:@"%f", placemark.location.coordinate.latitude];
 80         self.longitudeLabel.text = [NSString stringWithFormat:@"%f", placemark.location.coordinate.longitude];
 81         NSArray *address = placemark.addressDictionary[@"FormattedAddressLines"];
 82         NSMutableString *strM = [NSMutableString string];
 83         for (NSString *str in address) {
 84             [strM appendString:str];
 85         }
 86         self.detailAddressLabel.text = strM;
 87         //        }
 88         
 89         
 90         
 91     }];
 92 }
 93 //反向地理编码
 94 - (IBAction)reverseGeocode
 95 {
 96     // 1.获取用户输入的经纬度
 97     NSString *longtitude = self.longtitudeField.text;
 98     NSString *latitude = self.latitudeField.text;
 99     if (longtitude.length == 0 ||
100         longtitude == nil ||
101         latitude.length == 0 ||
102         latitude == nil) {
103         NSLog(@"请输入经纬度");
104         return;
105     }
106     
107     // 2.根据用户输入的经纬度创建CLLocation对象
108     CLLocation *location = [[CLLocation alloc] initWithLatitude:[latitude doubleValue]  longitude:[longtitude doubleValue]];
109     
110     // 3.根据CLLocation对象获取对应的地标信息
111     [self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
112         
113         for (CLPlacemark *placemark in placemarks) {
114             NSLog(@"%@ %@ %f %f", placemark.name, placemark.addressDictionary, placemark.location.coordinate.latitude, placemark.location.coordinate.longitude);
115             self.reverseDetailAddressLabel.text = placemark.locality;
116         }
117     }];
118 }
119 
120 #pragma mark - 懒加载
121 - (CLGeocoder *)geocoder
122 {
123     if(!_geocoder){
124         _geocoder = [[CLGeocoder alloc] init];
125         
126     }
127     return _geocoder;
128 }
129 
130 
131 @end