コールアウトのボタンを別のViewControllerに移動して追加情報を表示してから、マップビューに戻ることができるようにしたいと思います。マップはタブ付きのViewControllerの内部にあります。現時点では、コールアウトのボタンをクリックすると、アプリがクラッシュし、スレッドエラーが発生します。現時点で何をすべきかわからない。
これはヘッダーファイルです：
#import UIKit/UIKit.h>
#import MapKit/MapKit.h>
#define METERS_PER_MILE 1609.344
@interface MSKSecondViewController :UIViewController<MKMapViewDelegate>
{
IBOutlet MKMapView *stillwellMapView;
}
@property (nonatomic, assign) CLLocationCoordinate2D mainEntranceToStillwellCoordinate;
@end
これは実装ファイルです：
@interface MSKSecondViewController ()
@end
@implementation MSKSecondViewController
@synthesize mainEntranceToStillwellCoordinate;
- (void)viewDidLoad
{
[super viewDidLoad];
stillwellMapView.delegate=self;
// Do any additional setup after loading the view, typically from a nib.
[self mainEntrancetoStillwellCoordinate];
[self bambooForestCoordinate];
}
- (void)mainEntrancetoStillwellCoordinate
{
MKPointAnnotation * main = [[MKPointAnnotation alloc]init];
CLLocationCoordinate2D mainLocation;
mainLocation.latitude = 40.831685;
mainLocation.longitude = -73.477453;
[main setCoordinate:mainLocation];
[main setTitle:@"Entrance"];
[main setSubtitle:@"Main"];
[stillwellMapView addAnnotation:main];
}
- (void)bambooForestCoordinate
{
MKPointAnnotation * bambooForest = [[MKPointAnnotation alloc]init];
CLLocationCoordinate2D bambooForestLocation;
bambooForestLocation.latitude = 40.829118;
bambooForestLocation.longitude = -73.466443;
[bambooForest setCoordinate:bambooForestLocation];
[bambooForest setTitle:@"Bamboo Forest"];
[bambooForest setSubtitle:@"Exit to Woodbury"];
[stillwellMapView addAnnotation:bambooForest];
}
- (void)viewDidUnload
{
stillwellMapView = nil;
[super viewDidUnload];
// Release any retained subviews of the main view.
}
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:
(id<MKAnnotation>)annotation
{
MKPinAnnotationView * annView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:nil];
UIButton *entranceButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[entranceButton addTarget:self action:@selector(entranceButtonPressed:)
forControlEvents:UIControlEventTouchUpInside];
annView.rightCalloutAccessoryView = entranceButton;
entranceButton = [UIButton buttonWithType:UIButtonTypeCustom];
entranceButton.frame = CGRectMake(0, 0, 23, 23);
entranceButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
entranceButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;
[UIButton buttonWithType:UIButtonTypeDetailDisclosure];
annView.animatesDrop=TRUE;
annView.canShowCallout = YES;
annView.calloutOffset = CGPointMake(-5, 5);
return annView;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (void)viewWillAppear:(BOOL)animated
{
//the coordinates in which the map shows once loaded
CLLocationCoordinate2D zoomLocation;
zoomLocation.latitude = 40.831922;
zoomLocation.longitude= -73.476353;
//the amount of area shown by the map when it loads
MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(zoomLocation,
0.15*METERS_PER_MILE, 0.15*METERS_PER_MILE);
MKCoordinateRegion adjustedRegion = [stillwellMapView regionThatFits:viewRegion];
[stillwellMapView setRegion:adjustedRegion animated:YES];
}
@end