【笔记】IOS 应用获取 GPS 定位

IOS 应用获取 GPS 定位

import CoreLocation

实例化地址管理器对象

let locationManager = CLLocationManager()

定义委托扩展

extension ViewController: CLLocationManagerDelegate {
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        // 获取到GPS定位成功时执行的代码
    }
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        // 获取到GPS定位失败时执行的代码
    }
}

通过 GPS 定位获取经纬度

extension ViewController: CLLocationManagerDelegate {
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let lat = location.coordinate.latitude
        let lon = location.coordinate.longitude
    }
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print(error)
    }
}

override func viewDidLoad() {
    super.viewDidLoad()

locationManager.delegate = self
}

在程序启动时申请权限

override func viewDidLoad() {
    super.viewDidLoad()
    locationManager.delegate = self

locationManager.requestWhenInUseAuthorization()
}

通过 info.plist 配置文件设置提示内容

通过 Xcode

• 打开 info.plist 配置文件 ->+->Privacy - Location When in Use Usage Description 设置弹窗内容

直接修改配置文件

• 添加 <key>NSLocationWhenInUseUsageDescription</key><string></string> 配置

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>NSLocationWhenInUseUsageDescription</key>
	<string>获取位置信息</string>
</dict>
</plist>

在程序启动时获取 GPS 定位

override func viewDidLoad() {
    super.viewDidLoad()
    locationManager.delegate = self
    locationManager.requestWhenInUseAuthorization()

locationManager.requestLocation()
}

完整代码示例

import UIKit
import CoreLocation

class ViewController: UIViewController {

let locationManager = CLLocationManager()

@IBOutlet weak var label1: UILabel!
    @IBOutlet weak var label2: UILabel!

override func viewDidLoad() {
        super.viewDidLoad()
        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()
        locationManager.requestLocation()
    }

}

extension ViewController: CLLocationManagerDelegate {
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        if let location = locations.last {
            let lat = location.coordinate.latitude
            let lon = location.coordinate.longitude
            print(lat)
            print(lon)
            self.label1.text = String(lat)
            self.label2.text = String(lon)
        }
    }
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print(error)
    }
}

哔哩哔哩 —— 疯狂滴小黑