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

RootViewController

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)?

UIViewAutoresizingNone	这个常量如果被设置，视图将不进行自动尺寸调整。
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。
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。
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。
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。
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。
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 = {, };

    // 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

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;

@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

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;

@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

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;

@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

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;

@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:];

                        // 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

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;

@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] >  && error == nil)
         {

             NSLog(@"发现了 %lu placemark(s).",(unsigned long)[placemarks count]);

             CLPlacemark *firstPlacemark = [placemarks objectAtIndex:];

             NSLog(@"经度 = %f",firstPlacemark.location.coordinate.longitude);
             NSLog(@"纬度 = %f",firstPlacemark.location.coordinate.latitude);

         }
         else if ([placemarks count] ==  && error == nil)
         {
             NSLog(@"没有找到 placemarks.");

         }
         else if (error != nil)
         {
             NSLog(@"错误 = %@",error);
         }
     }];
}

@end

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;

@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

RootViewController.m