使用MapKit框架

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。

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。

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。

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。

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。

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

 

 

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;

@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];

RootViewController.m

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;

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;

Code

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;

@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];

Code

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;

@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];

RootViewController.m

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;

@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);

RootViewController.m

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;

@implementation RootViewController

- (void)viewDidLoad

 [super viewDidLoad];


 _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];

RootViewController.m

 

 

 

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