Question

我得到2 ViewControllers：在第一篇文章中，我得到了TableView国家名称。当我点击其中一个国家/地区的单元格时，它会移动到第二个ViewControl performSegueWithIdentifier＆amp;将单元格的名称（例如：“France”）保存在ViewController之外的变量中。在ViewController的几秒钟里，我得到了一个MapKit View。我不知道如何让地图去“法国”。

有什么建议吗？

Answer 1

    - (void)performSearchWithLocationName:(NSString*)CountryName{
        //#define METERS_PER_MILE 1.344
        MKLocalSearchRequest *request =
        [[MKLocalSearchRequest alloc] init];
        request.naturalLanguageQuery = CountryName;
        request.region = _mapView.region;

        MKLocalSearch *search =
        [[MKLocalSearch alloc]initWithRequest:request];

        [search startWithCompletionHandler:^(MKLocalSearchResponse
                                             *response, NSError *error) {
            if (response.mapItems.count == 0){
                NSLog(@"No Matches");


            }
            else{

                for (MKMapItem *item in response.mapItems)
                {

                    MKPointAnnotation *annotation =
                    [[MKPointAnnotation alloc]init];
                    annotation.coordinate = item.placemark.coordinate;
                    annotation.title = item.name;
                   NSLog(@"%@", annotation.title);
                    [_mapView addAnnotation:annotation];
                    MKCoordinateRegion region;
                    region = MKCoordinateRegionMakeWithDistance(annotation.coordinate,0.3*METERS_PER_MILE, 0.3*METERS_PER_MILE);

                  [self.mapView setRegion:[self.mapView regionThatFits:region] animated:YES];

                }

         }

        }];
    }
//You can implement map delegate
-(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view{

 NSLog(@"selected annotation and it's coordinates =>%f & %f",[view.annotation coordinate].latitude,[view.annotation coordinate].longitude);


}

Answer 2

Setp 1：获得自由度＆amp;使用位置名称的经度

Setp 2：使用该纬度和经度创建CLLocationCoordinate2D

Setp 3：创建MKCoordinateRegion

Setp 2：更改Mapview区域

使地图直接指向我想要的名称

2 个答案: