我正在尝试使用不同的标注详细信息设置每个注释。
目前，当我点击任何注释位置时，它会显示所有标注信息。
#import "AnnotationViewController.h"
#import "Annotation.h"
@implementation AnnotationViewController
@synthesize mapView;
-(void)viewDidLoad {
[super viewDidLoad];
[mapView setMapType:MKMapTypeStandard];
[mapView setZoomEnabled:YES];
[mapView setScrollEnabled:YES];
[mapView setDelegate:self];
MKCoordinateRegion TT = { {0.0, 0.0} , {0.0, 0.0} };
TT.center.latitude = 43.65343;
TT.center.longitude = -79.396311;
TT.span.longitudeDelta = 0.02f;
TT.span.latitudeDelta = 0.02f;
[mapView setRegion:TT animated:YES];
Annotation *ann1 = [[Annotation alloc] init];
ann1.title = @"Annotation 01";
ann1.subtitle = @"Message 01";
ann1.coordinate = TT.center;
[mapView addAnnotation:ann1];
MKCoordinateRegion TTY = { {0.0, 0.0} , {0.0, 0.0} };
TTY.center.latitude = 43.76919;
TTY.center.longitude = -79.41245;
TTY.span.longitudeDelta = 0.02f;
TTY.span.latitudeDelta = 0.02f;
[mapView setRegion:TTY animated:YES];
Annotation *ann2 = [[Annotation alloc] init];
ann2.title = @"Annotation 02";
ann2.subtitle = @"Message 02";
ann2.coordinate = TTY.center;
[mapView addAnnotation:ann2];
}
-(MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:id<MKAnnotation>)annotation
{
MKPinAnnotationView *view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pin"];
view.pinColor = MKPinAnnotationColorPurple;
view.enabled = YES;
view.animatesDrop = YES;
view.canShowCallout = YES;
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"GPSicon.png"]];
view.leftCalloutAccessoryView = imageView;
view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
return view;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSString *msg = [@"Location 01" stringByAppendingFormat:@"Opening 01"];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Plaza 01" message:msg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
NSString *msg02 = [@"Location 02" stringByAppendingFormat:@"Opening 02"];
UIAlertView *alert02 = [[UIAlertView alloc] initWithTitle:@"Plaza 02" message:msg02 delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert02 show];
}
-(void)button:(id)sender {
NSLog(@"Button action");
}
- (void)dealloc
{
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
}
*/
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
end
所以这就是发生的事情：当我点击“注释01”时，会出现气泡。但当我点击标注“详细图标”时，它会弹出位置01和＆amp;位置2个标题。
感谢Anna的帮助。但是当我检查一个注释时，我仍然会得到2个标注。这是现在的代码..
#import "AnnotationViewController.h"
#import "Annotation.h"
@implementation AnnotationViewController
@synthesize mapView;
-(void)viewDidLoad {
[super viewDidLoad];
[mapView setMapType:MKMapTypeStandard];
[mapView setZoomEnabled:YES];
[mapView setScrollEnabled:YES];
[mapView setDelegate:self];
MKCoordinateRegion TT = { {0.0, 0.0} , {0.0, 0.0} };
TT.center.latitude = 43.65343;
TT.center.longitude = -79.396311;
TT.span.longitudeDelta = 0.02f;
TT.span.latitudeDelta = 0.02f;
[mapView setRegion:TT animated:YES];
Annotation *ann1 = [[Annotation alloc] init];
ann1.title = @"Annotation 01";
ann1.subtitle = @"Message 01";
ann1.coordinate = TT.center;
[mapView addAnnotation:ann1];
MKCoordinateRegion TTY = { {0.0, 0.0} , {0.0, 0.0} };
TTY.center.latitude = 43.76919;
TTY.center.longitude = -79.41245;
TTY.span.longitudeDelta = 0.02f;
TTY.span.latitudeDelta = 0.02f;
[mapView setRegion:TTY animated:YES];
Annotation *ann2 = [[Annotation alloc] init];
ann2.title = @"Annotation 02";
ann2.subtitle = @"Message 02";
ann2.coordinate = TTY.center;
[mapView addAnnotation:ann2];
}
-(MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:id<MKAnnotation>)annotation
{
MKPinAnnotationView *view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pin"];
view.pinColor = MKPinAnnotationColorPurple;
view.enabled = YES;
view.animatesDrop = YES;
view.canShowCallout = YES;
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"GPSicon.png"]];
view.leftCalloutAccessoryView = imageView;
view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
return view;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
//first make sure the annotation is our custom class...
if ([view.annotation isKindOfClass:[Annotation class]])
{
//cast the object to our custom class...
Annotation *ann1 = (Annotation *)view.annotation;
//show one alert view with title set to annotation's title
//and message set to annotation's subtitle...
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:ann1.title
message:ann1.subtitle
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
//first make sure the annotation is our custom class...
if ([view.annotation isKindOfClass:[Annotation class]])
{
//cast the object to our custom class...
Annotation *ann2 = (Annotation *)view.annotation;
//show one alert view with title set to annotation's title
//and message set to annotation's subtitle...
UIAlertView *alert2 = [[UIAlertView alloc]
initWithTitle:ann2.title
message:ann2.subtitle
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
}
-(void)button:(id)sender {
NSLog(@"Button action");
}
- (void)dealloc
{
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad
{
[super viewDidLoad];
}
*/
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
end
我的Annotation.m文件代码
#import "Annotation.h"
@implementation Annotation
@synthesize coordinate, title, subtitle;
-(void)dealloc {
}
@end
我的Annotation.h文件代码
#import <Foundation/Foundation.h>
#import <MapKit/MKAnnotation.h>
@interface Annotation : NSObject <MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString *title;
NSString *subtitle;
}
@property(nonatomic, assign) CLLocationCoordinate2D coordinate;
@property(nonatomic, copy) NSString *title;
@property(nonatomic, copy) NSString *subtitle;
@end
我是否必须为每个注释制作大量h / m文件以使标注不同？我只是踩到这一点。任何猜测都会很棒，谢谢！
答案 0 :(得分：0)
在calloutAccessoryControlTapped中，代码显示两个警报视图，其中包含标题和消息的硬编码文本。这就是你明显得到的。
在calloutAccessoryControlTapped方法中，点按了其标注按钮的注释对象可通过view.annotation获取。
view参数是MKAnnotationView，其annotation属性指向其相关注释。
因此，请将代码更改为仅显示一个警报视图，并根据注释对象的属性显示标题和消息。
检查注释的类是一个好主意，以确保它是您期望的注释类型。
例如：
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
//first make sure the annotation is our custom class...
if ([view.annotation isKindOfClass:[Annotation class]])
{
//cast the object to our custom class...
Annotation *ann = (Annotation *)view.annotation;
//show one alert view with title set to annotation's title
//and message set to annotation's subtitle...
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:ann.title
message:ann.subtitle
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
}