使用MapKit框架(持续更新)
使用MapKit框架
地图显示
最简单显示地图的代码:
// // RootViewController.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "RootViewController.h" #import <MapKit/MapKit.h> @interface RootViewController () @end @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; // 初始化地图控件 MKMapView *mapView = [[MKMapView alloc] initWithFrame:self.view.bounds]; // 地图的类型 mapView.mapType = MKMapTypeStandard; // 视图的宽度和高度将和父视图的宽度一起成比例变化 mapView.autoresizingMask = \ UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; // 显示地图 [self.view addSubview:mapView]; } @end
注意:使用地图之前是需要引入MapKit框架的哦.
autoresizingMask是干什么用的呢(实际上,我看过后还是不懂)?
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UIViewAutoresizingNone |
这个常量如果被设置，视图将不进行自动尺寸调整。 |
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UIViewAutoresizingFlexibleHeight |
这个常量如果被设置，视图的高度将和父视图的高度一起成比例变化。否则，视图的高度将保持不变。 |
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UIViewAutoresizingFlexibleWidth |
这个常量如果被设置，视图的宽度将和父视图的宽度一起成比例变化。否则，视图的宽度将保持不变。 |
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UIViewAutoresizingFlexibleLeftMargin |
这个常量如果被设置，视图的左边界将随着父视图宽度的变化而按比例进行调整。否则，视图和其父视图的左边界的相对位置将保持不变。 |
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UIViewAutoresizingFlexibleRightMargin |
这个常量如果被设置，视图的右边界将随着父视图宽度的变化而按比例进行调整。否则，视图和其父视图的右边界的相对位置将保持不变。 |
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UIViewAutoresizingFlexibleBottomMargin |
这个常量如果被设置，视图的底边界将随着父视图高度的变化而按比例进行调整。否则，视图和其父视图的底边界的相对位置将保持不变。 |
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UIViewAutoresizingFlexibleTopMargin |
这个常量如果被设置，视图的上边界将随着父视图高度的变化而按比例进行调整。否则，视图和其父视图的上边界的相对位置将保持不变。 |
// // RootViewController.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "RootViewController.h" #import <MapKit/MapKit.h> @interface RootViewController () @end @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; // 初始化地图控件 MKMapView *mapView = [[MKMapView alloc] initWithFrame:self.view.bounds]; // 地图的类型 mapView.mapType = MKMapTypeStandard; // 视图的宽度和高度将和父视图的宽度一起成比例变化 mapView.autoresizingMask = \ UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; // 显示用户所在位置(此处系统会询问你是否使用当前位置) mapView.showsUserLocation = YES; // 经纬度坐标(河南南阳) CLLocationCoordinate2D coor2d = {33.00, 112.52}; // 地图缩放级别 MKCoordinateSpan span = {5, 5}; // 被显示的区域 MKCoordinateRegion region = {coor2d, span}; // 设置显示的区域 [mapView setRegion:region]; // 显示地图 [self.view addSubview:mapView]; } @end
位置定位
// // RootViewController.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "RootViewController.h" #import <MapKit/MapKit.h> @interface RootViewController ()<CLLocationManagerDelegate> @property (nonatomic, strong) CLLocationManager *locationManager; @end @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; // 判断定位功能是否可以使用 if([CLLocationManager locationServicesEnabled]) { // 初始化定位管理器 _locationManager = [[CLLocationManager alloc] init]; _locationManager.delegate = self; // 开始定位 [_locationManager startUpdatingLocation]; } else { NSLog(@"定位功能不可用"); } } - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { CLLocation *newLocation = [locations lastObject]; NSLog(@"%@", newLocation); // 定位结束 [manager stopUpdatingLocation]; } - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error { NSLog(@"%@", error); // 定位结束 [manager stopUpdatingLocation]; } @end
为什么需要判断定位功能可不可用呢?下图可以看出为什么了.
打印信息:
2014-05-15 09:25:11.883 CoreLocation[17610:60b] <+37.78583400,-122.40641700> +/- 5.00m (speed -1.00 mps / course -1.00) @ 5/15/14, 9:25:11 AM China Standard Time
本人将这个代理定位的方式改写成了可以使用block的方式:
YXLocation.h
// // YXLocation.h // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import <Foundation/Foundation.h> #import <MapKit/MapKit.h> @protocol YXLocationProtocol <NSObject> @optional - (void)currentLocation:(CLLocation *)location sucess:(BOOL)sucess; @end typedef void (^locationBlock_t)(CLLocation *currentLocation, BOOL sucess); @interface YXLocation : NSObject @property (nonatomic, copy, readwrite) locationBlock_t locationBlock; @property (nonatomic, assign, readwrite) id<YXLocationProtocol> protocol; @property (nonatomic, strong, readonly) CLLocation *location; - (void)start; @end
YXLocation.m
// // YXLocation.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "YXLocation.h" @interface YXLocation ()<CLLocationManagerDelegate> @property (nonatomic, strong) CLLocationManager *locationManager; @end @implementation YXLocation - (instancetype)init { self = [super init]; if (self) { _locationManager = [[CLLocationManager alloc] init]; _locationManager.delegate = self; } return self; } - (void)start { if([CLLocationManager locationServicesEnabled]) { [_locationManager startUpdatingLocation]; } else { NSLog(@"定位功能没有开启"); if (_locationBlock) { _locationBlock(nil, NO); } if (_protocol) { [_protocol currentLocation:nil sucess:NO]; } } } - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { CLLocation *newLocation = [locations lastObject]; _location = newLocation; if (_locationBlock) { _locationBlock(newLocation, YES); } if (_protocol) { [_protocol currentLocation:newLocation sucess:YES]; } [_locationManager stopUpdatingLocation]; } - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error { NSLog(@"定位功能出错"); if (_locationBlock) { _locationBlock(nil, NO); } if (_protocol) { [_protocol currentLocation:nil sucess:NO]; } } @end
将经纬度转换为有意义的地址
// // RootViewController.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "RootViewController.h" #import <MapKit/MapKit.h> @interface RootViewController ()<CLLocationManagerDelegate> @property (nonatomic, strong) CLLocationManager *locationManager; @property (nonatomic, strong) CLGeocoder *geocoder; @end @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; // 判断定位功能是否可以使用 if([CLLocationManager locationServicesEnabled]) { // 初始化定位管理器 _locationManager = [[CLLocationManager alloc] init]; _locationManager.delegate = self; // 开始定位 [_locationManager startUpdatingLocation]; } else { NSLog(@"定位功能不可用"); } } - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { CLLocation *newLocation = [locations lastObject]; // 初始化经纬度解析器 _geocoder = [[CLGeocoder alloc] init]; // 解析经纬度值 [_geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *placemarks, NSError *error) { CLPlacemark *placemark = [placemarks objectAtIndex:0]; // 将字典信息拼接起来 NSString *locatedAt = \ [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "]; // 打印信息 NSLog(@"我在 %@",locatedAt); NSLog(@"国家代码 %@",placemark.ISOcountryCode); NSLog(@"国家 %@",placemark.country); NSLog(@"邮政编码 %@",placemark.postalCode); NSLog(@"administrativeArea %@",placemark.administrativeArea); NSLog(@"locality %@",placemark.locality); NSLog(@"subLocality %@",placemark.subLocality); NSLog(@"subThoroughfare %@",placemark.subThoroughfare); }]; // 定位结束 [manager stopUpdatingLocation]; } - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error { NSLog(@"%@", error); // 定位结束 [manager stopUpdatingLocation]; } @end
打印信息如下:
2014-05-15 09:40:13.982 CoreLocation[2482:60b] 我在 中国北京市东城区东四街道东四朝阳门北小街2-1号
2014-05-15 09:40:13.986 CoreLocation[2482:60b] 国家代码 CN
2014-05-15 09:40:13.987 CoreLocation[2482:60b] 国家 中国
2014-05-15 09:40:13.988 CoreLocation[2482:60b] 邮政编码 (null)
2014-05-15 09:40:13.989 CoreLocation[2482:60b] administrativeArea 北京市
2014-05-15 09:40:13.991 CoreLocation[2482:60b] locality (null)
2014-05-15 09:40:13.992 CoreLocation[2482:60b] subLocality 东城区
2014-05-15 09:40:13.993 CoreLocation[2482:60b] subThoroughfare 2-1号
将有意义的地址转换为经纬度
// // RootViewController.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "RootViewController.h" #import <MapKit/MapKit.h> @interface RootViewController ()<CLLocationManagerDelegate> @property (nonatomic, strong) CLGeocoder *geocoder; @end @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; _geocoder = [[CLGeocoder alloc] init]; [_geocoder geocodeAddressString:@"中国北京市东城区东四街道东四朝阳门北小街2-1号" completionHandler:^(NSArray *placemarks, NSError *error) { if([placemarks count] > 0 && error == nil) { NSLog(@"发现了 %lu placemark(s).",(unsigned long)[placemarks count]); CLPlacemark *firstPlacemark = [placemarks objectAtIndex:0]; NSLog(@"经度 = %f",firstPlacemark.location.coordinate.longitude); NSLog(@"纬度 = %f",firstPlacemark.location.coordinate.latitude); } else if ([placemarks count] == 0 && error == nil) { NSLog(@"没有找到 placemarks."); } else if (error != nil) { NSLog(@"错误 = %@",error); } }]; } @end
打印信息:
2014-05-15 09:51:15.270 CoreLocation[2525:60b] 发现了 2 placemark(s).
2014-05-15 09:51:15.274 CoreLocation[2525:60b] 经度 = 116.425960
2014-05-15 09:51:15.275 CoreLocation[2525:60b] 纬度 = 39.931609
直接显示用户当前位置
// // RootViewController.m // CoreLocation // // Copyright (c) 2014年 Y.X. All rights reserved. // #import "RootViewController.h" #import <MapKit/MapKit.h> @interface RootViewController ()<CLLocationManagerDelegate> @property (nonatomic, strong) CLLocationManager *locationManager; @end @implementation RootViewController - (void)viewDidLoad { [super viewDidLoad]; // 判断定位功能是否可以使用 if([CLLocationManager locationServicesEnabled]) { // 初始化定位管理器 _locationManager = [[CLLocationManager alloc] init]; _locationManager.delegate = self; // 开始定位 [_locationManager startUpdatingLocation]; } else { NSLog(@"定位功能不可用"); } } - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations { // 获取坐标信息 CLLocation *newLocation = [locations lastObject]; // 定位结束 [manager stopUpdatingLocation]; // 初始化地图控件 MKMapView *mapView = [[MKMapView alloc] initWithFrame:self.view.bounds]; // 地图的类型 mapView.mapType = MKMapTypeStandard; // 视图的宽度和高度将和父视图的宽度一起成比例变化 mapView.autoresizingMask = \ UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; // 显示用户所在位置(此处系统会询问你是否使用当前位置) mapView.showsUserLocation = YES; // 地图缩放级别 MKCoordinateSpan span = {0.02, 0.02}; // 被显示的区域 MKCoordinateRegion region = {newLocation.coordinate, span}; // 设置显示的区域 [mapView setRegion:region]; // 显示地图 [self.view addSubview:mapView]; } - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error { NSLog(@"%@", error); // 定位结束 [manager stopUpdatingLocation]; } @end
