如何在IOS的地图中添加Pin和Annotation

Question

如何添加Pin和注释在地图在ios?

Answer 1

#import <MapKit/MapKit.h>   
@property (strong, nonatomic) IBOutlet MKMapView *mapvie;   //insert the one map view

in .m file

NSMutableArray *allocations=[[NSMutableArray alloc]init];
NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.cbapcertprep.com/service/index.php?/Download_vehicletrack/DownloadTrackData/35170"]];
[request setHTTPMethod:@"GET"];
[request setValue:@"application/json;charset=UTF-8" forHTTPHeaderField:@"content-type"];
NSError *err;
NSURLResponse *response;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];
NSArray *largeArray= [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err];
NSArray *smallArray = [largeArray subarrayWithRange:NSMakeRange(0, 20)]; //this is range for what the result u need

for (int i=0; i<[smallArray count]; i++) {
     CLLocationCoordinate2D annotationCoord;
    MKPointAnnotation *annotationPoint = [[MKPointAnnotation alloc] init];
    annotationCoord.latitude = [[[smallArray objectAtIndex:i]objectForKey:@"latitude"]doubleValue ];
    annotationCoord.longitude = [[[smallArray objectAtIndex:i]objectForKey:@"longitude"] doubleValue];
    annotationPoint.coordinate = annotationCoord;
    annotationPoint.title = [[smallArray objectAtIndex:i]objectForKey:@"address"];
    [allocations addObject:annotationPoint];

    MKCoordinateRegion myRegion;
    MKCoordinateSpan span;
    span.latitudeDelta=THE_SPAN;
    span.longitudeDelta=THE_SPAN;
    myRegion.center=annotationCoord;
    myRegion.span=span;
    [self.mapvie setRegion:myRegion animated:YES];
}

[self.mapvie addAnnotations:allocations];