【笔记】IOS应用获取GPS定位

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前言

IOS应用获取GPS定位

引入依赖

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import CoreLocation

实例化地址管理器对象

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let locationManager = CLLocationManager()

定义委托

定义委托扩展

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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

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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)
    }
}

设置委托

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

在程序启动时申请权限

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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
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<?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

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

完整代码示例

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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)
    }
}

修改IOS模拟器定位

完成

参考文献

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