1.話不多說，效果
Untitled2.gif
2.注意點
跟大家多嘮叨一下，設置錨點的意義就是可以進行詳情展示，大家可以設置錨點的樣式。效果中的樣式是一張圖片，沒有圖片顯示的就是我們俗稱的大頭針。
錨點.gif
3.代碼展示
//地理編碼
@property(nonatomic,strong)CLGeocoder *geocoder;
self.geocoder = [[CLGeocoder alloc]init];
//viewDidLoad
//設置地圖的顯示風格
self.mapView.mapType = MKMapTypeStandard;
//設置地圖可縮放
self.mapView.zoomEnabled = YES;
//設置地圖可滾動
self.mapView.scrollEnabled = YES;
//設置地圖可旋轉
self.mapView.rotateEnabled = YES;
//設置顯示用戶當前位置
self.mapView.showsUserLocation = YES;
//為mapView設置代理
self.mapView.delegate = self;
[self locateTolatitude:23.126272 longitude:113.395568];
//創建一個手勢處理器，用于檢測，處理長按手勢
//長按手勢識別器
UILongPressGestureRecognizer *longPressGes = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];
//為該控件添加手勢
[self.view addGestureRecognizer:longPressGes];
#pragma mark - 手勢回調
-(void)longPress:(UILongPressGestureRecognizer *)gestu
{
//獲取長按點的坐標
CGPoint pos = [gestu locationInView:self.mapView];
//把獲取到的坐標轉換成經度緯度 值
CLLocationCoordinate2D coor2D = [self.mapView convertPoint:pos toCoordinateFromView:self.mapView];
//再把經緯度值添加到CLLocation(定位)對象
CLLocation *location = [[CLLocation alloc]initWithLatitude:coor2D.latitude longitude:coor2D.longitude];
//根據經緯度解析地址（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"];
//將詳細地址拼接成一個字符串
NSMutableString *address = [[NSMutableString alloc]init];
for (int i = 0 ; i < addrArray.count ; i++) {
[address appendString:addrArray[i]];
}
//創建MKPointAnnotation對象---代表一個錨點
MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
//設置標題
annotation.title = placmark.name;
//設置子標題
annotation.subtitle = address;
//把坐標放入錨點里面
annotation.coordinate = coor2D;
//添加錨點
[self.mapView addAnnotation:annotation];
}
}];
}
- (IBAction)gogogo:(id)sender {
//關閉兩個文本框的虛擬鍵盤
[self.weidu resignFirstResponder];
[self.jingdu resignFirstResponder];
NSString* latitudeStr = self.weidu.text;
NSString* longtitudeStr = self.jingdu.text;
//如果用戶輸入的經緯度不為空
if (latitudeStr != nil && latitudeStr.length > 0
&& longtitudeStr != nil && longtitudeStr.length > 0)
{
// 調用自己實現的方法設置地圖的顯示位置和顯示區域
[self locateTolatitude:latitudeStr.floatValue
longitude:longtitudeStr.floatValue];
}
}
-(void)locateTolatitude:(CGFloat)latitude longitude:(CGFloat)longitude
{
CLLocationCoordinate2D coor2D = {latitude,longitude};
//設置地圖的顯示范圍
MKCoordinateSpan span;
//地圖顯示范圍越小，越清楚
span.latitudeDelta = 0.01;
span.longitudeDelta = 0.01;
// 創建MKCoordinateRegion對象，該對象代表了地圖的顯示中心和顯示范圍。
MKCoordinateRegion region = {coor2D,span};
// 設置當前地圖的顯示中心和顯示范圍
[self.mapView setRegion:region animated:YES];
//將用戶輸入的經緯度封裝成CLLocation對象
CLLocation *location = [[CLLocation alloc]initWithLatitude:latitude longitude:longitude];
[self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//如果解析結果的集合元素大于1，表明解析得到了經度，維度信息
if (placemarks.count > 0) {
CLPlacemark *placmark = placemarks[0];
NSLog(@"===%@",placmark.addressDictionary);
//獲取詳細地址信息
NSArray *addArr = [placmark.addressDictionary objectForKey:@"FormattedAddressLines"];
//將詳細地址拼接成一個字符串
NSMutableString *addr = [[NSMutableString alloc]init];
for (int i = 0; i < addArr.count; i ++) {
[addr appendString:addArr[i]];
}
//創建MKPointAnnotation對象---代表一個錨點
MKPointAnnotation *annotation = [[MKPointAnnotation alloc]init];
//設置標題
annotation.title = placmark.name;
//設置子標題
annotation.subtitle = addr;
//把坐標放入錨點里面
annotation.coordinate = coor2D;
//添加錨點
[self.mapView addAnnotation:annotation];
}
}];
}
#pragma mark -MKMapViewDelegate(地圖代理)
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
static NSString *annoId = @"fkAnno";
//獲取可重用的錨點控件
MKAnnotationView *annoView = [mapView dequeueReusableAnnotationViewWithIdentifier:annoId];
if (!annoView) {
annoView = [[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annoId];
}
/*
如果不想改變錨點控件的圖片，只想改變顏色，則可創建MKPinAnnotationView實例
再修改MKPinAnnotationView對象的pinColor屬性即可。
*/
annoView.image = [UIImage imageNamed:@"錨點.gif"];
// 設置該錨點控件是否可顯示氣泡信息
annoView.canShowCallout = YES;
// 定義一個按鈕，用于為錨點控件設置附加控件
//UIButtonTypeDetailDisclosure 詳細說明藍色小箭頭按鈕
UIButton *b = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[b addTarget:self action:@selector(butomTape:) forControlEvents:UIControlEventTouchUpInside];
// 可通過錨點控件的rightCalloutAccessoryView、leftCalloutAccessoryView設置附加控件
annoView.rightCalloutAccessoryView = b;
return annoView;
}
-(void)butomTape:(UIButton *)sender
{
NSLog(@"您點擊了錨點信息！");
}
