如何在地图视图中将标注添加到单个注释中 [英] How to add callout into individual annotation in map view
本文介绍了如何在地图视图中将标注添加到单个注释中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
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.
I'm trying to set each annotation with different callout detail info.
当前，当我单击任何注释位置时，它会显示所有标注信息.
Currently when I click on any annotation location, it shows all the callout info.
#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
这就是发生的情况:当我单击注释01"时，将出现气泡.但是，当我点击标注详细信息图标"时，它将同时弹出位置01和位置2个标题.
So this is what's happening: When I click on "Annotation 01" the bubble will appear. But when I click on the callout "detail icon", it will popup both Location 01 & Location 2 titles.
感谢安娜的帮助.但是，当我检查一个注解时，我仍然会收到2个标注.这是现在的代码.
Thanks Anna for you help. But I still get 2 callouts when i check one annotation. This is the code now..
#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
My Annotation.m file code
#import "Annotation.h"
@implementation Annotation
@synthesize coordinate, title, subtitle;
-(void)dealloc {
}
@end
我的Annotation.h文件代码
My Annotation.h file code
#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添加大量的h/m文件以使标注不同?我只是脚在这一点上.任何猜测都很好，谢谢！
Do i have to make alot of h/m files for each Annotation to make the callout different? im just stomp at this point. any guesses would be great, thanks!
推荐答案
在calloutAccessoryControlTapped中，代码显示两个带有硬编码文本的警报视图，标题和消息一个接一个.因此，这就是显而易见的结果.
In calloutAccessoryControlTapped, the code is showing two alert views with hard-coded text for the title and message one after the other. So that's what you get obviously.
在calloutAccessoryControlTapped方法中，可以通过view.annotation使用被轻敲了标注按钮的注释对象.
In the calloutAccessoryControlTapped method, the annotation object whose callout button was tapped is available via view.annotation.
view参数是MKAnnotationView，它具有指向其相关注释的annotation属性.
The view parameter is the MKAnnotationView which has an annotation property that points to its related annotation.
因此将代码更改为仅显示一个警报视图，并基于注释对象的属性显示标题和消息.
So change the code to show only one alert view and with the title and message based on the properties of the annotation object.
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.
It's also a good idea to check the class of the annotation to make sure it's the type of annotation you're expecting.
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];
}
}
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