我有一个包含多个注释的地图视图。每个注释都有一个按钮，用于将用户带到该注释的详细视图。详细视图目前有两个标签，一个用于注释的标题，另一个用于注释的副标题，以及一个＆＃34;获取方向＆＃34;按钮。我希望标题标签填充注释中的标题和字幕标签，以填充注释中的副标题。我希望“获取路线”按钮将用户带入“地图”应用，并根据当前位置向他们提供地址说明。我还想在详细视图中添加网站和电话号码，但我也不确定如何填充这些字段。详细信息视图称为AnnotationDetailView，但除了在IB中添加按钮和标签之外，我还没有做任何事情。我只是不确定如何填充标签并让按钮做我想要的。任何帮助都会很棒。
这是我的代码：
//
// RSFM.m
#import "RSFM.h"
#import "AnnotationDetailView.h"
@interface RSFM ()
@end
@implementation RSFM
{
}
@synthesize centerCoordinate, coordinate, title, subtitle;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
self.title = NSLocalizedString(@"Farm Markets", @"Farm Markets");
// Create location manager object
locationManager = [[CLLocationManager alloc]init];
[locationManager setDelegate:self];
// And we want it to be as accurate as possible regardless of how much time/power it takes
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
// Tell our manager to start looking for its location immediately
// [locationManager startUpdatingLocation];
}
return self;
}
/*
- (void)setCenterCoordinate:(CLLocationCoordinate2D)centerCoordinate
{
centerCoordinate = CLLocationCoordinate2DMake(37.7885, 85.3279);
}
*/
- (void)findLocation
{
[locationManager startUpdatingLocation];
[activityIndicator startAnimating];
// [locationTitleField setHidden:YES];
[locationManager stopUpdatingLocation];
}
- (void)foundLocation:(CLLocation *)loc
{
CLLocationCoordinate2D coord = [loc coordinate];
// Create an instance of BNRMapPoint with the current data
// BNRMapPoint *mp = [[BNRMapPoint alloc]initWithCoordinate:coord title:[locationTitleField text]];
// Add it to the map view
// [worldView addAnnotation:mp];
// Zoom the region to this location
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(coord, 700000, 700000);
[worldView setRegion:region animated:YES];
// Reset the UI
// [locationTitleField setText:@""];
[activityIndicator stopAnimating];
// [locationTitleField setHidden:NO];
[locationManager stopUpdatingLocation];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
NSLog(@"%@", newLocation);
// How many seconds ago was this new location created?
NSTimeInterval t = [[newLocation timestamp]timeIntervalSinceNow];
// CLLocationManagers will return the last found location of the device first, you don't want that data in this case.
// If this location was made more than 3 minutes ago, ignore it.
if (t < -180)
{
// this is cached data, you don't want it, keep looking
return;
}
[self foundLocation:newLocation];
}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
NSLog(@"Could not find location: %@", error);
}
- (void)dealloc
{
// Tell the location manager to stop sending us messages
[locationManager setDelegate:nil];
}
- (IBAction)showDetails:(id)sender
{
AnnotationDetailView *detail = [[AnnotationDetailView alloc] initWithNibName:nil bundle:nil];
detail.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController pushViewController:detail animated:YES];
}
- (MKAnnotationView*)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
// If it's the user location, return nil
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
// Try to dequeue an existing pin view first
static NSString *annotationIdentifier = @"AnnotationIdentifier";
MKPinAnnotationView *pinView = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:annotationIdentifier];
pinView.animatesDrop = YES;
pinView.canShowCallout = YES;
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[rightButton setTitle:annotation.title forState:UIControlStateNormal];
[rightButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
pinView.rightCalloutAccessoryView = rightButton;
return pinView;
}
- (void)viewDidLoad
{
[locationManager startUpdatingLocation];
[worldView setShowsUserLocation:YES];
[locationManager stopUpdatingLocation];
NSMutableArray *marketLocations = [[NSMutableArray alloc]init];
NSMutableArray *lat = [[NSMutableArray alloc]initWithObjects:@"37.7867266", @"37.0703517", @"37.1610806", @"37.318367", @"37.3559204", @"37.4154066", @"37.4757622", @"37.7450252", @"37.6318978", @"37.0716803", nil];
NSMutableArray *lon = [[NSMutableArray alloc]initWithObjects:@"-87.608209", @"-88.1237899", @"-87.9148629", @"-87.5074402", @"-87.5448032", @"-87.8003148", @"-87.9515986", @"-87.9061638", @"-87.1148574", @"-87.3008418", nil];
NSMutableArray *title1 = [[NSMutableArray alloc]initWithObjects:@"Cates Farm", @"Broadbent B & B Foods", @"Cayce's Pumpkin Patch", @"Metcalfe Landscaping", @"Brumfield Farm Market", @"Dogwood Valley Farm", @"Country Fresh Meats & Farmers Market", @"Jim David Meats", @"Trunnell's Farm Market", @"Lovell's Orchard & Farm Market", nil];
NSMutableArray *subtitle1 = [[NSMutableArray alloc]initWithObjects:@"Hwy 425 Henderson, KY 42420", @"257 Mary Blue Road Kuttawa, KY 42055", @"153 Farmersville Road Princeton, KY 42445", @"410 Princeton Road Madisonville, KY 42431", @"3320 Nebo Road Madisonville, KY 42431", @"4551 State Route 109N Clay, KY 42404", @"9355 US Hwy 60 W Sturgis, KY 42459",@"350 T. Frank Wathen Rd. Uniontown, KY 42461", @"9255 Hwy 431 Utica, KY 42376", @"22850 Coal Creek Road Hopkinsville, KY 42240", nil];
CLLocationCoordinate2D location;
MKPointAnnotation *marketAnnotation;
for (int x = 0; x < [lat count]; x++)
{
marketAnnotation = [[MKPointAnnotation alloc]init];
location.latitude = [[lat objectAtIndex:x]floatValue];
location.longitude = [[lon objectAtIndex:x]floatValue];
marketAnnotation.coordinate = location;
marketAnnotation.title = [title1 objectAtIndex:x];
marketAnnotation.subtitle = [subtitle1 objectAtIndex:x];
[marketLocations addObject:marketAnnotation];
}
[worldView addAnnotations:marketLocations];
/*
MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
point.coordinate = CLLocationCoordinate2DMake(37.7867266, -87.608209);
point.title = @"Cates Farm";
point.subtitle = @"Hwy 425 Henderson, KY 42420";
[worldView addAnnotation:point];
*/
}
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
CLLocationCoordinate2D loc = [userLocation coordinate];
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(loc, 700000, 700000);
[worldView setRegion:region animated:YES];
[locationManager stopUpdatingLocation];
locationManager.delegate = nil;
}
- (IBAction)selectSegmentControl
{
int segmentTouched = [mapVarieties selectedSegmentIndex];
NSString *segmentName = [mapVarieties titleForSegmentAtIndex:segmentTouched];
if ([segmentName isEqualToString:@"Street"])
{
[worldView setMapType:MKMapTypeStandard];
}
if ([segmentName isEqualToString:@"Satellite"])
{
[worldView setMapType:MKMapTypeSatellite];
}
if ([segmentName isEqualToString:@"Hybrid"])
{
[worldView setMapType:MKMapTypeHybrid];
}
}
@end
以下是我展示详情视图的地方
- (IBAction)showDetails:(id)sender
{
AnnotationDetailView *detail = [[AnnotationDetailView alloc] initWithNibName:nil bundle:nil];
detail.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
NSLog(@"%@", marketAnnotation.title);
detail.ti.text = marketAnnotation.title;
[self.navigationController pushViewController:detail animated:YES];
}
和AnnotationDetailView
//
// AnnotationDetailView.m
#import "AnnotationDetailView.h"
@interface AnnotationDetailView ()
@end
@implementation AnnotationDetailView
@synthesize ti;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
// [title setText:marketAnnotation.title];
// [subtitle setText:marketAnnotation.subtitle];
ti = [[UILabel alloc]initWithFrame:CGRectMake(20, 20, 281, 21)];
[self.view addSubview:ti];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
我对此有几个问题。一，标签没有出现。二，我在showDetails方法中有一个NSLog语句来向我展示marketAnnotations是什么。它显示了添加的最后一个注释的标题。
答案 0 :(得分：0)
您可以为MKAnnotation类添加额外参数。例如，此Annotation类使用3个额外的字符串来保存信息：
// MyAnnotation.h
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
@interface MyAnnotation : NSObject <MKAnnotation>
@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy, readonly) NSString *title;
@property (nonatomic, copy, readonly) NSString *subtitle;
@property (nonatomic, copy, readonly) NSString *myString1;
@property (nonatomic, copy, readonly) NSString *myString2;
@property (nonatomic, copy, readonly) NSString *myString3;
-(id)initWithCoordinates:(CLLocationCoordinate2D) paramCoordinates
title:(NSString *) paramTitle
subTitle:(NSString *) paramSubTitle
myString1:(NSString *) paramMyString1
myString2:(NSString *) paramMyString2
myString3:(NSString *) paramMyString3;
@end
// MyAnnotation.m
#import "MyAnnotation.h"
@implementation MyAnnotation
-(id)initWithCoordinates:(CLLocationCoordinate2D)paramCoordinates
title:(NSString *)paramTitle
subTitle:(NSString *)paramSubTitle
myString1:(NSString *)paramMyString1
myString2:(NSString *)paramMyString2
myString3:(NSString *)paramMyString1
{
self = [super init];
if(self != nil)
{
_coordinate = paramCoordinates;
_title = paramTitle;
_subtitle = paramSubTitle;
_myString1 = paramMyString1;
_myString2 = paramMyString2;
_myString3 = paramMyString3;
}
return (self);
}
@end
当用户点击某个图钉时，您可以执行此操作以将信息从注释传递到下一个视图控制器：
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
if ([(UIButton*)control buttonType] == UIButtonTypeDetailDisclosure)
{
YourViewController *vc = [[YourViewController alloc] init];
[vc setTitleString:[(MyAnnotation *)view.annotation title]];
[vc setSubTitleString:[(MyAnnotation *)view.annotation subTitle]];
[vc setPassedString1:[(MyAnnotation *)view.annotation myString1]];
[vc setPassedString2:[(MyAnnotation *)view.annotation myString2]];
[vc setPassedString3:[(MyAnnotation *)view.annotation myString3]];
[[self navigationController] pushViewController:vc animated:YES];
}
}
在下一个View Controller（vc）中，您可以修改按钮文本，如下所示：
[myButton setTitle:myPassedString1 forState:UIControlStateNormal];