地图和定位功能的实现-篇幅略大,手机慎入

1 private lazy var mgr : CLLocationManager = CLLocationManager()

mgr.startUpdatingLocation()

mgr.desiredAccuracy = kCLLocationAccuracyBestForNavigation

mgr.distanceFilter = 100

    // Damping : 阻力系数 (0~1.0)      initialSpringVelocity:回弹速度
        UIView.animateWithDuration(0.5, delay: 0.0, usingSpringWithDamping: 0.8, initialSpringVelocity: 5.0, options: [], animations: {
            self.imageView.transform = transform
            }, completion: nil)

     geocoder.geocodeAddressString(address) { (<#[CLPlacemark]?#>, <#NSError?#>) in
            <#code#>
        }

     geocoder.reverseGeocodeLocation(location) { (<#[CLPlacemark]?#>, <#NSError?#>) in
            <#code#>
        }

 1 class ViewController: UIViewController {
 2    
 3     // MARK:- 控件属性
 4     @IBOutlet weak var addressTextView: UITextView!
 5     @IBOutlet weak var latitudeTextField: UITextField!
 6     @IBOutlet weak var longitudeTextField: UITextField!
 7     // MARK:- 懒加载属性
 8     private lazy var geocoder : CLGeocoder = CLGeocoder()
 9 }
10 
11 // MARK:- 地理编码
12 extension ViewController {
13     @IBAction func geocode() {
14        
15         // 1.获取用户输入的地址名称
16         guard let address = addressTextView.text else {
17             return
18         }
19         // 2.对地理名称进行地理编码
20         geocoder.geocodeAddressString(address) { (placemarks : [CLPlacemark]?, error : NSError?) in
21             // 1.错误校验
22             if error != nil {
23                 print(error)
24                 return
25             }
26             // 2.对结果进行校验
27             guard let placemarks = placemarks else {
28                 return
29             }
30             // 3.遍历所有的结果
31             for place in placemarks {
32                 print(place.name)
33                
34                 // 获取地理位置
35                 guard let location = place.location else {
36                     continue
37                 }
38                
39                 // 获取经纬度
40                 let latitude = location.coordinate.latitude
41                 let longitude = location.coordinate.longitude
42                
43                 // 将经纬度显示textField中
44                 self.latitudeTextField.text = "\(latitude)"
45                 self.longitudeTextField.text = "\(longitude)"
46             }
47         }
48     }
49 }
50 
51 
52 // MARK:- 反地理编码
53 extension ViewController {
54     @IBAction func reverseGeocode() {
55         // 1.获取用户输入的经纬度
56         guard let latitude = latitudeTextField.text, let longitude = longitudeTextField.text else {
57             return
58         }
59        
60         // 2.将经纬度转成CLLocation对象
61         guard let latitudeD = Double(latitude), let longitudeD = Double(longitude) else {
62             return
63         }
64         let location = CLLocation(latitude: latitudeD, longitude: longitudeD)
65        
66         // 3.反地理编码
67         geocoder.reverseGeocodeLocation(location) { (placemarks : [CLPlacemark]?, error : NSError?) in
68             // 1.错误校验
69             if error != nil {
70                 print(error)
71                 return
72             }
73            
74             // 2.对结果进行校验
75             guard let placemarks = placemarks else {
76                 return
77             }
78             // 3.遍历结果
79             for place in placemarks {
80                 guard let addressDict = place.addressDictionary else {
81                     continue
82                 }
83                
84                 guard let addressArray = addressDict["FormattedAddressLines"] as? [String] else {
85                     continue
86                 }
87                
88                 guard let address = addressArray.last else {
89                     continue
90                 }
91                
92                 self.addressTextView.text = address
93             }
94         }
95     }
96 }