1.話不多說，效果

Untitled2.gif

2.注意點

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！");
}