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
