1.话不多说，效果
Untitled2.gif
2.注意点
跟大家多唠叨一下，设置锚点的意义就是可以进行详情展示，大家可以设置锚点的样式。效果中的样式是一张图片，没有图片显示的就是我们俗称的大头针。
锚点.gif
3.代码展示
//地理编码
@property(nonatomic,strong)CLGeocoder *geocoder;
self.geocoder = [[CLGeocoder alloc]init];
//viewDidLoad
//设置地图的显示风格
self.mapView.mapType = MKMapTypeStandard;
//设置地图可缩放
self.mapView.zoomEnabled = YES;
//设置地图可滚动
self.mapView.scrollEnabled = YES;
//设置地图可旋转
self.mapView.rotateEnabled = YES;
//设置显示用户当前位置
self.mapView.showsUserLocation = YES;
//为mapView设置代理
self.mapView.delegate = self;
[self locateTolatitude:23.126272 longitude:113.395568];
//创建一个手势处理器，用于检测，处理长按手势
//长按手势识别器
UILongPressGestureRecognizer *longPressGes = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];
//为该控件添加手势
[self.view addGestureRecognizer:longPressGes];
#pragma mark - 手势回调
-(void)longPress:(UILongPressGestureRecognizer *)gestu
{
//获取长按点的坐标
CGPoint pos = [gestu locationInView:self.mapView];
//把获取到的坐标转换成经度纬度 值
CLLocationCoordinate2D coor2D = [self.mapView convertPoint:pos toCoordinateFromView:self.mapView];
//再把经纬度值添加到CLLocation(定位)对象
CLLocation *location = [[CLLocation alloc]initWithLatitude:coor2D.latitude longitude:coor2D.longitude];
//根据经纬度解析地址（反向解析）
[self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
if (placemarks.count > 0) {
CLPlacemark *placmark = placemarks[0];
NSArray *addrArray = [placmark.addressDictionary objectForKey:@"FormattedAddressLines"];
//将详细地址拼接成一个字符串
NSMutableString *address = [[NSMutableString alloc]init];
for (int i = 0 ; i < addrArray.count ; i++) {
[address appendString:addrArray[i]];
}
//创建MKPointAnnotation对象---代表一个锚点
MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
//设置标题
annotation.title = placmark.name;
//设置子标题
annotation.subtitle = address;
//把坐标放入锚点里面
annotation.coordinate = coor2D;
//添加锚点
[self.mapView addAnnotation:annotation];
}
}];
}
- (IBAction)gogogo:(id)sender {
//关闭两个文本框的虚拟键盘
[self.weidu resignFirstResponder];
[self.jingdu resignFirstResponder];
NSString* latitudeStr = self.weidu.text;
NSString* longtitudeStr = self.jingdu.text;
//如果用户输入的经纬度不为空
if (latitudeStr != nil && latitudeStr.length > 0
&& longtitudeStr != nil && longtitudeStr.length > 0)
{
// 调用自己实现的方法设置地图的显示位置和显示区域
[self locateTolatitude:latitudeStr.floatValue
longitude:longtitudeStr.floatValue];
}
}
-(void)locateTolatitude:(CGFloat)latitude longitude:(CGFloat)longitude
{
CLLocationCoordinate2D coor2D = {latitude,longitude};
//设置地图的显示范围
MKCoordinateSpan span;
//地图显示范围越小，越清楚
span.latitudeDelta = 0.01;
span.longitudeDelta = 0.01;
// 创建MKCoordinateRegion对象，该对象代表了地图的显示中心和显示范围。
MKCoordinateRegion region = {coor2D,span};
// 设置当前地图的显示中心和显示范围
[self.mapView setRegion:region animated:YES];
//将用户输入的经纬度封装成CLLocation对象
CLLocation *location = [[CLLocation alloc]initWithLatitude:latitude longitude:longitude];
[self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//如果解析结果的集合元素大于1，表明解析得到了经度，维度信息
if (placemarks.count > 0) {
CLPlacemark *placmark = placemarks[0];
NSLog(@"===%@",placmark.addressDictionary);
//获取详细地址信息
NSArray *addArr = [placmark.addressDictionary objectForKey:@"FormattedAddressLines"];
//将详细地址拼接成一个字符串
NSMutableString *addr = [[NSMutableString alloc]init];
for (int i = 0; i < addArr.count; i ++) {
[addr appendString:addArr[i]];
}
//创建MKPointAnnotation对象---代表一个锚点
MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
//设置标题
annotation.title = placmark.name;
//设置子标题
annotation.subtitle = addr;
//把坐标放入锚点里面
annotation.coordinate = coor2D;
//添加锚点
[self.mapView addAnnotation:annotation];
}
}];
}
#pragma mark -MKMapViewDelegate(地图代理)
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
static NSString *annoId = @"fkAnno";
//获取可重用的锚点控件
MKAnnotationView *annoView = [mapView dequeueReusableAnnotationViewWithIdentifier:annoId];
if (!annoView) {
annoView = [[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annoId];
}
/*
如果不想改变锚点控件的图片，只想改变颜色，则可创建MKPinAnnotationView实例
再修改MKPinAnnotationView对象的pinColor属性即可。
*/
annoView.image = [UIImage imageNamed:@"锚点.gif"];
// 设置该锚点控件是否可显示气泡信息
annoView.canShowCallout = YES;
// 定义一个按钮，用于为锚点控件设置附加控件
//UIButtonTypeDetailDisclosure 详细说明蓝色小箭头按钮
UIButton *b = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[b addTarget:self action:@selector(butomTape:) forControlEvents:UIControlEventTouchUpInside];
// 可通过锚点控件的rightCalloutAccessoryView、leftCalloutAccessoryView设置附加控件
annoView.rightCalloutAccessoryView = b;
return annoView;
}
-(void)butomTape:(UIButton *)sender
{
NSLog(@"您点击了锚点信息！");
}
