使用定位

1.general->Linked Frameworks and Libraries导入CoreLocation.framework框架
2.import CoreLocation
3.然后就可以开始使用了

毛玻璃效果

        //添加毛玻璃效果
        let visual = UIVisualEffectView(effect: UIBlurEffect(style: .dark))
        visual.frame = YHRect
         view.addSubview(visual) 

将图片用作当前view的背景

        /*
         SWIFT
         view.layer.contents = UIImage(named:"Image_Name").CGImage
         Objective-C
         view.layer.contents = (__bridge id _Nullable)([UIImage imageNamed:@"Image_Name"].CGImage);
         */
        self.view.layer.contents = UIImage(named: "bg")?.cgImage

<li><h1>学习代码:<h1></li>

ViewController.swift

import UIKit
import CoreLocation
/*使用定位的步骤：
 1.general->Linked Frameworks and Libraries导入CoreLocation.framework框架
 2.import CoreLocation
 3.然后就可以开始使用了
 */

let YHRect = UIScreen.main.bounds
let YHHeight = YHRect.size.height
let YHWidth = YHRect.size.width

let buttonRect = CGRect(x: 30, y: YHHeight-100, width: YHWidth-60, height: 80)
let labelRect = CGRect(x: 10, y: 60, width: YHWidth-20, height: 20)

class ViewController: UIViewController, CLLocationManagerDelegate {
    
    let button = UIButton(frame: buttonRect)
    let label = UILabel(frame: labelRect)
    let locationManager = CLLocationManager()

    
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        //初始化定位
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest//精准度
        locationManager.requestAlwaysAuthorization()//发送开启定位的请求
        setupView()
    }
    
    func setupView() {
        //将图片用作当前view的背景
        /*
         SWIFT
         view.layer.contents = UIImage(named:"Image_Name").CGImage
         Objective-C
         view.layer.contents = (__bridge id _Nullable)([UIImage imageNamed:@"Image_Name"].CGImage);
         */
        self.view.layer.contents = UIImage(named: "bg")?.cgImage
        
        //添加毛玻璃效果
        let visual = UIVisualEffectView(effect: UIBlurEffect(style: .dark))
        visual.frame = YHRect
        
        label.text = "未定位"
        label.textColor = .white
        label.textAlignment = .center
        button.setTitle("点击定位", for: .normal)
        button.setTitleColor(.white, for: .normal)
        button.setBackgroundImage(UIImage(named: "Find my location"), for: .normal)
        button.addTarget(self, action: #selector(findLoaction), for: .touchUpInside)
        
        view.addSubview(visual)
        view.addSubview(button)
        view.addSubview(label)
    }
    func findLoaction() {
        if CLLocationManager.locationServicesEnabled() {
            locationManager.startUpdatingLocation()
        }else {
            locationManager.requestAlwaysAuthorization()
        }
    }
    
    //定位失败
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        label.text = "ERROR:"+error.localizedDescription
    }
    //定位成功
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        if let newLocal = locations.first {
            CLGeocoder().reverseGeocodeLocation(newLocal, completionHandler: { (pms, err) in
                if (pms?.last?.location?.coordinate) != nil {
                    manager.stopUpdatingLocation()//停止定位，节省电量，只获取一次定位
                    
                    //取得第一个地标，地标中存储了详细的地址信息，注意：一个地名可能搜索出多个地址
                    let placemark:CLPlacemark = (pms?.last)!
                    print(placemark)
                    let name: String? = placemark.name;//地名
                    let thoroughfare: String? = placemark.thoroughfare;//街道
                    let subThoroughfare: String? = placemark.subThoroughfare; //街道相关信息，例如门牌等
                    let locality: String? = placemark.locality; // 城市
                    //别的含义
                    //let location = placemark.location;//位置
                    //let region = placemark.region;//区域
                    //let addressDic = placemark.addressDictionary;//详细地址信息字典,包含以下部分信息
                    //let subLocality=placemark.subLocality; // 城市相关信息，例如标志性建筑
                    //let administrativeArea=placemark.administrativeArea; // 州
                    //let subAdministrativeArea=placemark.subAdministrativeArea; //其他行政区域信息
                    //let postalCode=placemark.postalCode; //邮编
                    //let ISOcountryCode=placemark.ISOcountryCode; //国家编码
                    //let country=placemark.country; //国家
                    //let inlandWater=placemark.inlandWater; //水源、湖泊
                    //let ocean=placemark.ocean; // 海洋
                    //let areasOfInterest=placemark.areasOfInterest; //关联的或利益相关的地标
                    
                    self.label.text = String(name ?? "-")+String(thoroughfare ?? "-")+String(subThoroughfare ?? "-")+String(locality ?? "-")
                }
            })
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}