如何在地图视图中将标注添加到单个注释中

Posted 2023-03-05

【中文标题】如何在地图视图中将标注添加到单个注释中

【英文标题】：How to add callout into individual annotation in map view

【发布时间】：2014-02-04 02:35:37

【问题描述】：

我正在尝试为每个注释设置不同的标注详细信息。

目前，当我单击任何注释位置时，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“Annotation 01”时，会出现气泡。但是当我点击标注“详细图标”时，它会弹出位置 01 和位置 2 标题。

---

感谢安娜的帮助。但是当我检查一个注释时，我仍然得到 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 文件才能使标注不同？我只是在这一点上跺脚。任何猜测都会很棒，谢谢！

【问题讨论】：

请不要显示两个警报视图。就像我的例子一样显示一个。

对不起，我没有说清楚。我试图让它显示不同的标注信息然后气泡信息。每个注释。

【参考方案1】：

在calloutAccessoryControlTapped 中，代码显示两个警报视图，其中一个接一个地显示标题和消息的硬编码文本。显然，这就是你得到的。

在calloutAccessoryControlTapped 方法中，可以通过view.annotation 获得点击了标注按钮的注释对象。

view 参数是MKAnnotationView，它有一个annotation 属性指向其相关的注解。

因此更改代码以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。

检查注释的类以确保它是您期望的注释类型也是一个好主意。

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];
    

【讨论】：

对不起，我没有说清楚。我试图让它显示不同的标注信息然后气泡信息。每个注释

将要显示的信息添加到 Annotation 类。在创建每个注释时设置该信息。然后在 calloutAccessoryControlTapped 中访问该信息，就像示例访问标题和副标题一样。

你能给我看一个示例脚本吗？我对 xcode 本身有点陌生。非常感谢你帮助我。

看到这个问题：***.com/questions/5939223/store-data-in-mkannotation

它仍然在一个注释中显示所有标注。安娜 如果我可以付钱/雇用你来帮助我，有可能吗？我的时间有点短，我需要完成这个项目。请告诉我。你可以联系我“[e-mail]”