アプリケーションでマップを実装するためにアップル マップを使用しました。そのために次のコードを使用しました。
私の問題は、初めてロードするときにのみピンが表示されることです。
私はこのようなコードを書きました
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = @"Locate Engineer";
[worldView setMapType:MKMapTypeStandard];
[worldView setShowsUserLocation:YES];
worldView.delegate = self;
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
-(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if(self)
{
i=0;
locationManager = [[CLLocationManager alloc]init];
[locationManager setDelegate:self];
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[locationManager startUpdatingLocation];
}
return self;
}
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[locationManager startUpdatingLocation];
}
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(@"%@",newLocation);
}
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
pinView = nil;
if(annotation != mapView.userLocation)
{
NSString * defaultPinID = @"aa";
//removed autorelease from the code below by coder
pinView = (MKPinAnnotationView *) [worldView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
if(pinView == nil)
{
pinView .tag =i;
pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] ;
//pinView.image = [UIImage imageNamed:@"serviceengineer.png"];
NSLog(@"pnID is %d",i);
NSLog(@"value of i is %d",i);
if ([[pinView.annotation title] isEqualToString:@"Levitton"]) {
pinView.pinColor = MKPinAnnotationColorRed;
pinView.canShowCallout = YES;
pinView.draggable = NO;
} else {
pinView.pinColor = MKPinAnnotationColorGreen;
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[rightButton addTarget:self action:@selector(mapAction:) forControlEvents:UIControlEventTouchUpInside];
rightButton.tag =i;
pinView.rightCalloutAccessoryView = rightButton;
// pinView.animatesDrop = YES;
pinView.canShowCallout = YES;
pinView.draggable = NO;
}
}
else {
[worldView.userLocation setTitle:@"Title here"]; }
i++;
}
return pinView;
}
-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
ServiceEngineersList *engList = [ServiceEngineers findAll];
MKCoordinateSpan spans;
spans.latitudeDelta = 0.5;
spans.longitudeDelta = 0.5;
ServiceEngineers *obj1= [engList objectAtIndex:0];
// location1.latitude = 40.728224000000;
//location1.longitude =-73.794852000000;
location1.latitude = [obj1.LATITUDE doubleValue];
location1.longitude =[obj1.LONGITUDE doubleValue];
ad1 = [[annotationTest alloc] init];
ad1.pinColor = MKPinAnnotationColorGreen;
MKCoordinateRegion regions =
MKCoordinateRegionMakeWithDistance(location1, 250,250);
regions.span = spans;
[worldView setRegion:regions animated:YES];
[worldView setZoomEnabled:YES];
[worldView addAnnotation:ad1];
ServiceEngineers *obj2= [engList objectAtIndex:1];
ad2 = [[annotationTest2 alloc] init];
ad2.pinColor = MKPinAnnotationColorGreen;
//location2.latitude = 40.710841000000;
//location2.longitude=-73.897769000000;
location2.latitude = [obj2.LATITUDE doubleValue];
location2.longitude =[obj2.LONGITUDE doubleValue];
MKCoordinateRegion region1 =
MKCoordinateRegionMakeWithDistance(location2, 250, 250);
region1.span = spans;
[worldView setRegion:region1 animated:YES];
[worldView setZoomEnabled:YES];
[worldView addAnnotation:ad2];
ServiceEngineers *obj3= [engList objectAtIndex:2];
ad3 = [[annotationTest3 alloc] init];
ad3.pinColor = MKPinAnnotationColorGreen;
//location3.latitude = 40.726768000000;
//location3.longitude=-73.634295000000;
location3.latitude = [obj3.LATITUDE doubleValue];
location3.longitude =[obj3.LONGITUDE doubleValue];
MKCoordinateRegion region2 =
MKCoordinateRegionMakeWithDistance(location3, 250, 250);
region2.span = spans;
[worldView setRegion:region2 animated:YES];
[worldView setZoomEnabled:YES];
[worldView addAnnotation:ad3];
ServiceEngineers *obj4= [engList objectAtIndex:3];
ad4 = [[annotationTest4 alloc] init];
ad4.pinColor = MKPinAnnotationColorGreen;
//location4.latitude = 40.702677000000;
//location4.longitude=-73.788969000000;
location4.latitude = [obj4.LATITUDE doubleValue];
location4.longitude =[obj4.LONGITUDE doubleValue];
MKCoordinateRegion region3 =
MKCoordinateRegionMakeWithDistance(location4, 250, 250);
region3.span = spans;
[worldView setRegion:region3 animated:YES];
[worldView setZoomEnabled:YES];
[worldView addAnnotation:ad4];
ad5 = [[annotationTest5 alloc] init];
ad5.pinColor = MKPinAnnotationColorRed;
location5.latitude = 40.7258;
location5.longitude= -73.5147;
MKCoordinateRegion region4 =
MKCoordinateRegionMakeWithDistance(location5, 250, 250);
region4.span = spans;
[worldView setRegion:region4 animated:YES];
[worldView setZoomEnabled:YES];
[worldView addAnnotation:ad5];
}
-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(@"Couldnot find location: %@",error);
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if(interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)
return YES;
return NO;
}
問題を見つけるのを手伝ってください.私はブレークポイントを置きます.2回目は最大までしか来ていません
worldView.delegate = self;