导入#import 头文件
@interface ViewController ()
{
UITextField *latitudeTF;
UITextField *longtitudeTF;
}
@property(nonatomic,strong)MKMapView *mapview;
@property(nonatomic,strong)CLGeocoder *geocoder;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// 初始化 self.geocoder = [[CLGeocoder alloc]init];
// 初始化地图 self.mapview = [[MKMapView alloc]initWithFrame:self.view.frame];
// 设置属性
// 设置标准地图 self.mapview.mapType = MKMapTypeStandard;
// 设置地图可滚动 self.mapview.scrollEnabled = YES;
// 展示用户当前显示位置 self.mapview.showsUserLocation = YES;
// 设置代理 self.mapview.delegate = self;
// 设置允许缩放 self.mapview.zoomEnabled = YES;
// 添加到视图上 [self.view addSubview:_mapview];
// 设置地图显示的经纬度为39.5427 经度为116.2317
[self locateToLatitude:39.5427 longtitude:116.2317];
// 设置长按手势 UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)]; [self.mapview addGestureRecognizer:longPress];
// 创建纬度Label
UILabel *latitudeLabel = [[UILabel alloc]initWithFrame:CGRectMake(5, 20, 40, 30)]; latitudeLabel.text = @"纬度";
// 添加到视图上 [self.mapview addSubview:latitudeLabel];
// 创建纬度文本框
latitudeTF = [[UITextField alloc]initWithFrame:CGRectMake(45, 20, 100, 30)]; latitudeTF.text = @"23.12672";
latitudeTF.borderStyle = UITextBorderStyleRoundedRect;
// 数字键盘 latitudeTF.keyboardType = UIKeyboardTypeNumberPad;
// 添加到视图上 [self.mapview addSubview:latitudeTF];
// 创建经度Label
UILabel *longtitudeLabel = [[UILabel alloc]initWithFrame:CGRectMake(145, 20, 40, 30)]; longtitudeLabel.text = @"经度";
// 添加到视图上
[self.mapview addSubview:longtitudeLabel];
// 创建经度文本框
longtitudeTF = [[UITextField alloc]initWithFrame:CGRectMake(185, 20, 100, 30)]; longtitudeTF.text = @"113.395";
longtitudeTF.borderStyle = UITextBorderStyleRoundedRect;
// 数字键盘
longtitudeTF.keyboardType = UIKeyboardTypeNumberPad;
// 添加到视图上
[self.mapview addSubview:longtitudeTF];
// 创建按钮
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame =CGRectMake(285, 20, 40, 30);
[btn setTitle:@"GO" forState:UIControlStateNormal];
// 添加点击事件 [btn addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];
[self.mapview addSubview:btn];
}
// 前往另一个地图界面
-(void)click{
[latitudeTF resignFirstResponder];
[longtitudeTF resignFirstResponder];
//经度 NSString *latitudeStr = latitudeTF.text;
//纬度 NSString *longtitudeStr = longtitudeTF.text;
//如果用户输入的经度、纬度为空
if (latitudeStr != nil && latitudeStr.length > 0 && longtitudeStr!= nil && longtitudeStr.length > 0) {
//设置经度、纬度
[self locateToLatitude:latitudeStr.floatValue longtitude:longtitudeStr.floatValue];
}}
-(void)locateToLatitude:(CGFloat)latitude longtitude:(CGFloat)longitude{
//设置地图中的的经度、纬度
CLLocationCoordinate2D center = {latitude,longitude};
//设置地图显示的范围 MKCoordinateSpan span;
//地图显示范围越小，细节越清楚；
span.latitudeDelta = 0.01; span.longitudeDelta = 0.01;
//创建MKCoordinateRegion对象，该对象代表地图的显示中心和显示范围 MKCoordinateRegion region = {center,span};
//设置当前地图的显示中心和显示范围
[self.mapview setRegion:region animated:YES];
// 设置一个固定的锚点
MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
// 设置显示的标题
annotation.title = @"一个新的地点";
annotation.subtitle = @"我喜欢的地方";
// 添加位置
CLLocationCoordinate2D coordinate = {latitude,longitude};
annotation.coordinate = coordinate;
// 添加锚点到视图上
[self.mapview addAnnotation:annotation];
}
// 设置长按手势的触发方法
-(void)longPress:(UILongPressGestureRecognizer *)press{
// 定义坐标值
CGPoint cp = [press locationInView:self.mapview];
// 根据坐标获取经纬度
CLLocationCoordinate2D coordinate = [self.mapview convertPoint:cp toCoordinateFromView:self.mapview];
// 将经纬度包装成CLLocation对象
CLLocation *location = [[CLLocation alloc]initWithLatitude:coordinate.latitude longitude:coordinate.longitude];
// 根据经纬度反向解析地址
[self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray* _Nullable placemarks, NSError * _Nullable error) {
if (placemarks.count > 0)
{ CLPlacemark *placemark = placemarks[0];
// 获取地址信息对应的地址详情
NSArray *addrArr = [placemark.addressDictionary objectForKey:@"FormattedAddressLines"];
NSMutableString *addreStr = [[NSMutableString alloc]init];
for (int i = 0; I
{
[addreStr appendString:addrArr[i]];
}
// 创建一个锚点
MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
annotation.title = placemark.name;
annotation.subtitle = addreStr;
annotation.coordinate = coordinate;
// 添加锚点
[self.mapview addAnnotation:annotation];
}
]};
}
// 添加锚点的协议方法
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id)annotation
{
static NSString *annoID = @"FKAnno";
// 设置可重用的锚点控件
MKAnnotationView *annoView = [mapView dequeueReusableAnnotationViewWithIdentifier:annoID];
if (!annoView) {
annoView = [[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annoID];
}
// 为锚点添加图片
annoView.image = [UIImage imageNamed:@"pos.gif"];
// 设置该控件是否显示气泡
annoView.canShowCallout = YES;
UIButton *btn = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[btn addTarget:self action:@selector(goclick) forControlEvents:UIControlEventTouchUpInside];
annoView.rightCalloutAccessoryView = btn;
// 返回annoView
return annoView;
}
-(void)goclick
{
NSLog(@"您点击了锚点信息");
}
