CoreLocation导航Demo

//
//  ViewController.m
//  导航
//
//  Created by sleeping sun on 16/7/5.
//  Copyright © 2016年 sleeping sun. All rights reserved.
//

#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>

@interface ViewController ()<CLLocationManagerDelegate>
@property (nonatomic,strong) CLLocationManager *manager;
@property (nonatomic,strong) CLLocation *previousLocation;
@property (nonatomic,assign) NSTimeInterval sumTime;
@property (nonatomic,assign) CLLocationDistance sumDistance;
@property (nonatomic,assign) CGFloat averSpeed;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // 1.创建定位管理者
    CLLocationManager *manager = [[CLLocationManager alloc] init];
    
    // 2.设置代理
    manager.delegate = self;
    
    // 3.判断设备
    if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0) {
        NSLog(@"ios8之后版本");
        // 向用户发送请求
        /*
          在Info.plist文件中添加如下配置：
         （1）NSLocationAlwaysUsageDescription
         （2）NSLocationWhenInUseUsageDescription
         */
        [manager requestAlwaysAuthorization];
    }
    
    // 4.定位精度 - 定位精度越高，耗电量越大
    /*
     extern const CLLocationAccuracy kCLLocationAccuracyBest;
     extern const CLLocationAccuracy kCLLocationAccuracyNearestTenMeters;
     extern const CLLocationAccuracy kCLLocationAccuracyHundredMeters;
     extern const CLLocationAccuracy kCLLocationAccuracyKilometer;
     extern const CLLocationAccuracy kCLLocationAccuracyThreeKilometers;
     */
    manager.desiredAccuracy = kCLLocationAccuracyBest;
    
    // 5.定位频率 - 控制定位频率，每X米定位一次
    manager.distanceFilter = 1;
    
    // 6.开始定位
    [manager startUpdatingLocation];
    
    // 7.持有定位管理者
    self.manager = manager;
}

#pragma mark - 代理方法
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    // 1.计算两个点之间的距离
    // 1.1.获取最后一个点的位置
    CLLocation *newLocation = [locations lastObject];
    
    // 1.2.判断如果第一个点有值，执行以下操作
    if (self.previousLocation) {
        // 计算两次的距离（米）
        CLLocationDistance distance = [newLocation distanceFromLocation:self.previousLocation];
        
        // 计算两次之间的时间
        NSTimeInterval dTime = [newLocation.timestamp timeIntervalSinceDate:self.previousLocation.timestamp];
        
        // 计算速度(M/S)
        CGFloat speed = distance / dTime;
        
        // 2.计算总时间 - 路程 - 平均速度
        // 2.1.总时间
        self.sumTime += dTime;
        
        // 2.2.总路程
        self.sumDistance += distance;
        
        // 2.3.平均速度
        self.averSpeed = self.sumDistance / self.sumTime;
        
        NSLog(@"行驶距离为：%f米，时间：%f秒，速度：%f米/秒",distance,dTime,speed);
        NSLog(@"行驶总路程为：%f米，总时间：%f秒，平均速度：%f米/秒",self.sumDistance,self.sumTime,self.averSpeed);
    }
    self.previousLocation = newLocation;
}
@end

- (void)requestAlwaysAuthorization __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_8_0) __TVOS_PROHIBITED;

- (void)requestWhenInUseAuthorization __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_8_0);