MKMapView地理位置查询

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import MapKit/MapKit.h

@interface ViewController () UISearchBarDelegate

@property (nonatomic,strong) MKMapView *mapView;

@property (nonatomic,strong) UISearchBar *searchBar;

@end

@implementation ViewController

(void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 400, 44)];
self.searchBar.delegate = self;
self.navigationItem.titleView = self.searchBar;
self.mapView = [[MKMapView alloc] initWithFrame:self.view.bounds];
[self.mapView setRegion:MKCoordinateRegionMake(CLLocationCoordinate2DMake(22.579911, 113.960739), MKCoordinateSpanMake(0.05, 0.05)) animated:YES];
[self.view addSubview:self.mapView];
}

-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
MKLocalSearchRequest *req = [[MKLocalSearchRequest alloc] init];

//设置查询的内容req.naturalLanguageQuery = searchBar.text;//设置查询的区域req.region = MKCoordinateRegionMake(CLLocationCoordinate2DMake(22.579911, 113.960739), MKCoordinateSpanMake(0.05, 0.05));MKLocalSearch *localSeach = [[MKLocalSearch alloc] initWithRequest:req];//开始查询[localSeach startWithCompletionHandler:^(MKLocalSearchResponse * _Nullable response, NSError * _Nullable error) {    //清除之前的大头针    [self.mapView removeAnnotations:self.mapView.annotations];    for (MKMapItem *item in response.mapItems) {        NSLog(@"%@ ---> %@",item.name,item.phoneNumber);        MKPointAnnotation *ann = [[MKPointAnnotation alloc] init];        ann.title = item.name;        ann.subtitle = item.phoneNumber;        ann.coordinate = item.placemark.location.coordinate;        [self.mapView addAnnotation:ann];    };}];

}

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