I am having problem in knowing which annotation is tapped on MKMapView.
let me explain my problem, there is a simple view controller on which map view is loaded.
my annotation class "MapViewAnnotation.h" is as follows
#interface MapViewAnnotation : NSObject <MKAnnotation>
{
NSString *title;
CLLocationCoordinate2D coordinate;
NSString *sID;
NSString *zipCode;
}
#property (nonatomic, copy) NSString *title;
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, retain) NSString *sID;
#property (nonatomic, retain) NSString *zipCode;
- (id)initWithTitle:(NSString *)titleOfPin andStoreId:(NSString *)storeIdForDetails andCoordinate:(CLLocationCoordinate2D)coordinateOfPin andZipCode:(NSString *)zip;
here is my "MapViewAnnotation.m" file.
#import "MapViewAnnotation.h"
#import <MapKit/MapKit.h>
#implementation MapViewAnnotation
#synthesize title, coordinate,storeId,zipCode;
- (id)initWithTitle:(NSString *)titleOfPin andStoreId:(NSString *)storeIdForDetails andCoordinate:(CLLocationCoordinate2D)coordinateOfPin andZipCode:(NSString *)zip
{
[super init];
title = titleOfPin;
coordinate = coordinateOfPin;
sID = storeIdForDetails;
zipCode = zip;
return self;
}
-(void)dealloc
{
[title release];
[super dealloc];
}
#end
and this is my viewcontroller.m file
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
//I want to access the sID property of that annotation here. PLEASE HELP ME HOW CAN I DO THAT
if (!storeDetailControllerObject) {
storeDetailControllerObject = [[StoreDetailController alloc]init];
}
// storeDetailControllerObject.storeId = [view.annotation storeId];
[self.navigationController pushViewController:storeDetailControllerObject animated:YES];
From the MKMapViewDelegate protocol reference:
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view;
If you handle the event in this method you may know which annotation was selected.
You have to set the MKMapView's delegate and to declare that you class implements the MKMapViewDelegate.
This should work:
MapViewAnnotation *mapViewAnnotation = (MapViewAnnotation*)view.annotation;
if( [mapViewAnnotation isKindOfClass:[MapViewAnnotation class]] ){
storeDetailControllerObject.storeId = mapViewAnnotation.storeId;
}
Related
I have eventually succeeded with getting the index for the annotation clicked on at callOutAccecoryControlTapped-method. :)
I have made a custom annotation class called Annotation (Annnotation *ann) which I fill with values from my db at parse.com.
But now I don't know how to pass the values on to my next view LAOpeningHoursViewController?
I can see all the values when I am debugging and *ann (se code) has for example: ann.cname="Olles cafe" etc. So that is good.
I pass the whole ann-object on to my next view. But I don't know how to get for example ann.cname on to my 'self.myLabel.text'. I show you the code:
If you have the kindness to answer me, please explain very well because I am a beginner.
Best is if you could have the trouble writing a code-snippet here… ;)
This is some code of the first view:
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:#"pinView"];
if (!pinView) {
pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:#"pinView"];
pinView.pinColor = MKPinAnnotationColorRed;
pinView.animatesDrop = YES;
pinView.canShowCallout = YES;
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
pinView.rightCalloutAccessoryView = rightButton;
} else {
pinView.annotation = annotation;
}
return pinView;
}
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control {
Annotation *ann = [[mapView selectedAnnotations] objectAtIndex:0];
NSLog(#"ann.subtitle = %#", ann.subtitle);
NSLog(#"ann.cid = %#", ann.cid);
NSLog(#"ann.cstr = %#", ann.cstr);
NSLog(#"ann.cname = %#", ann.cname);
//this works fine, I get all the values
[self performSegueWithIdentifier: #"openingHours" sender:ann];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"openingHours"]) {
LAOpeningHoursViewController *secondView = (LAOpeningHoursViewController*)segue.destinationViewController;
//PFObject *tempObject = [[myMapView selectedAnnotations] objectAtIndex:0];
Annotation *ann = (id)sender;
//Here is the problem: What to pass? I want to pass for example ann.cname that is declared in my custom annotation
//Both 'ann' and 'tempObject' has the right values for cname but I dont know how to pass it to the next view
secondView.myLabel.text = self.stringToPass;
//secondView.myLabel.text = ann.cname;
}
}
And here is the code from the second view called LAOpeningHoursViewController, that should receive the data:
- (void)viewDidLoad
{
[super viewDidLoad];
self.myLabel.text = ann.cname;
//recieving an error-code… of course
}
declared in LAOpeningHoursViewController.h as this
#property (strong, nonatomic) IBOutlet UILabel *myLabel;
#property (strong, nonatomic) NSString *textContent;
and finally, here is my Annotation.h-file where cname is the one that should go to 'myLabel'
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>
#interface Annotation : NSObject <MKAnnotation>
#property(nonatomic, assign) CLLocationCoordinate2D coordinate;
#property(nonatomic, copy)NSString *title;
#property(nonatomic, copy)NSString *subtitle;
#property(nonatomic, copy)UIButton *rightButton;
#property(nonatomic, retain)NSString *cid;
#property(nonatomic, retain)NSString *cname;
#property(nonatomic, retain)NSString *ctel;
#property(nonatomic, retain)NSString *cstr;
#property(nonatomic, retain)NSString *cmon;
#property(nonatomic, retain)NSString *ctue;
#property(nonatomic, retain)NSString *cwed;
#property(nonatomic, retain)NSString *passedId;
#property(nonatomic, retain)NSString *objectId;
#end
The sender parameter in [self performSegueWithIdentifier: #"openingHours" sender:ann]; should be set to self. This is intended to give the presented view controller reference to the presenting controller.
Add the property #property (nonatomic, strong) Annotation *selectedAnnotation to the presenting view controller. So that it can be set thus:
//this works fine, I get all the values
[self setSelectedAnnotation:ann];
[self performSegueWithIdentifier: #"openingHours" sender:ann];
Now you have the selected annotation as a property it can be used to initialize the LAOpeningHoursViewController:
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"openingHours"]) {
LAOpeningHoursViewController *secondView = (LAOpeningHoursViewController*)segue.destinationViewController;
//PFObject *tempObject = [[myMapView selectedAnnotations] objectAtIndex:0];
Annotation *ann = (id)sender;
// Setup second view here:
secondView.myLabel.text = self.selectedAnnotation.cname;
// assign further properties here...
}
}
I hope this helps, good luck!
I nearly followed this post. The viewcontroller will push via storyboard. Here the relevant code:
ViewController.m:
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#"%#", view.annotation.title);
MapPoint *annView = view.annotation;
DetailViewController *dvc = [self.storyboard instantiateViewControllerWithIdentifier:#"DetailViewController"];
dvc.title = #"my own Details";
dvc.titleTMP = annView.title;
dvc.subtitleTMP = annView.subtitle;
[self.navigationController pushViewController:dvc animated:YES];
}
MapPoint.h:
#interface MapPoint : NSObject <MKAnnotation>
{
NSString *_title;
NSString *_subtitle;
CLLocationCoordinate2D _coordinate;
UIImage *_storeImage;
}
#property (copy) NSString *title;
#property (copy) NSString *subtitle;
#property (nonatomic, readonly) UIImage *storeImage;
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
- (id)initWithTitle:(NSString*)title subtitle:(NSString*)subtitle coordinate:(CLLocationCoordinate2D)coordinate storeImage:(UIImage*)storeImage;
and DetailViewController:
#interface DetailViewController : UIViewController
#property (strong, nonatomic) IBOutlet UIImageView *branchImage;
#property (strong, nonatomic) IBOutlet UILabel *titleLabel;
#property (strong, nonatomic) IBOutlet UITextView *textView;
I think my mistake is in the calloutAccessoryControlTapped method but I dont know what is the real reason for this issue.
If you use a storyboard, can use prepareForSegue method and set within a class similarly as you have made.
I post a portion of code
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if([segue.identifier isEqualToString:#"Brs"]){
NSLog(#"segue %# ",[segue identifier]);
[segue.destinationViewController setPath:[ris_xml objectAtIndex:index_post-1] ];
}
}
In this example I set attribute "Path" of next UIViewController only if his identifier is "Brs".
For use this method is need set UIviewController identifier into storyboard right panel.
Using this isn't need to instantiate new UIViewController if you have it in storyboard.
I solved it by thinking about loading sequence.
All what to do is create temporary #properties
#interface DetailViewController : UIViewController
#property (strong, nonatomic) IBOutlet UIImageView *branchImage;
#property (strong, nonatomic) IBOutlet UILabel *titleLabel;
#property (strong, nonatomic) IBOutlet UITextView *textView;
#property (nonatomic) NSString *titleTMP; //added
#property (nonatomic) NSString *subtitleTMP; //added
and do
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#"%#", view.annotation.title);
MapPoint *annView = view.annotation;
DetailViewController *dvc = [self.storyboard instantiateViewControllerWithIdentifier:#"DetailViewController"];
dvc.title = #"my own Details";
dvc.titleTMP = annView.title;
dvc.subtitleTMP = annView.subtitle;
[self.navigationController pushViewController:dvc animated:YES];
}
The DetailViewController:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
titleLabel.text = titleTMP;
textView.text = subtitleTMP;
}
When I try to drag the pin, it does not move. When I touch it, it darkens. However, it never lifts up, and it never moves around.
Here is the header file for my annotation class:
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <Parse/Parse.h>
#interface GeoPointAnnotation : NSObject <MKAnnotation>
- (id)initWithObject:(PFObject *)aObject;
#property (nonatomic, readwrite, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, readonly, copy) NSString *title;
#property (nonatomic, readonly, copy) NSString *subtitle;
- (void)setCoordinate:(CLLocationCoordinate2D)newCoordinate;
#end
Here's where I create the annotation in my view controller:
- (void)updateMap
{
[self.mapView removeAnnotations:self.mapView.annotations];
PFGeoPoint *geoPoint = [self.post location];
// center the map around the geopoint
[self.mapView setRegion:MKCoordinateRegionMake(
CLLocationCoordinate2DMake(geoPoint.latitude, geoPoint.longitude),
MKCoordinateSpanMake(0.01, 0.01)
)];
GeoPointAnnotation *annotation = [[GeoPointAnnotation alloc] initWithObject:self.post.object];
[self.mapView addAnnotation:annotation];
}
// from Geolocations by Parse
#pragma mark - MKMapViewDelegate
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
static NSString *GeoPointAnnotationIdentifier = #"RedPin";
MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:GeoPointAnnotationIdentifier];
if (!annotationView) {
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:GeoPointAnnotationIdentifier];
annotationView.pinColor = MKPinAnnotationColorRed;
annotationView.canShowCallout = YES;
annotationView.draggable = YES;
annotationView.animatesDrop = YES;
}
return annotationView;
}
Any ideas?
Found the problem: I forgot to hook up the Map View's delegate in my Storyboard xib. h/t Nitin Gohel - thanks!
In my app I have two views: a mapView, and a detail view. The mapView has annotations, and the annotation views have right callout buttons that push the detail view onto the stack when the callout button is pressed. In the detail view, the user can take a picture that appears on the UIImage that is on the detail view controller. What I want is for a different image to be on the detail view controller for each annotation. I have read that I can use a singleton, and I have made a singleton class, but I do not know how to use it. Can someone help me out?
Here is some code:
My MKAnnotation class:
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#interface MapPoint : NSObject <MKAnnotation>
{
NSString *_address;
CLLocationCoordinate2D _coordinate;
NSNumber *_identifier;
UIImage *_image;
}
- (id)initWithAddress:(NSString*)address
coordinate:(CLLocationCoordinate2D)coordinate
title:(NSString *)t
identifier:(NSNumber *)ident;
//This is a required property from MKAnnotation
#property (nonatomic, readonly) CLLocationCoordinate2D coordinate;
//This is an optional property from MKAnnotataion
#property (nonatomic, copy) NSString *title;
#property (nonatomic, readonly, copy) NSString *subtitle;
#property (nonatomic) BOOL animatesDrop;
#property (nonatomic) BOOL canShowCallout;
#property (copy) NSString *address;
#property (copy) NSNumber *identifier;
#property (copy,nonatomic) UIImage *image;
#end
#implementation MapPoint
#synthesize title, subtitle, animatesDrop, canShowCallout;
#synthesize address = _address, coordinate = _coordinate, identifier = _identifier, image = _image;
-(id)initWithAddress:(NSString *)address
coordinate:(CLLocationCoordinate2D)coordinate
title:(NSString *)t
identifier:(NSNumber *)ident
{
self = [super init];
if (self) {
_address = [address copy];
_coordinate = coordinate;
_identifier = ident;
[self setTitle:t];
NSDate *theDate = [NSDate date];
subtitle = [NSDateFormatter localizedStringFromDate:theDate
dateStyle:NSDateFormatterMediumStyle
timeStyle:NSDateFormatterMediumStyle];
}
return self;
}
#end
Here is the detail view controller:
#import <UIKit/UIKit.h>
#class P2OViewController;
#interface PinViewController : UIViewController <UINavigationControllerDelegate, UIImagePickerControllerDelegate,UITextFieldDelegate>
{
__weak IBOutlet UILabel *label;
__weak IBOutlet UIButton *removeButton;
NSString *addressForLabel;
__weak P2OViewController *_vc;
__weak NSNumber *_identifier;
}
#property (weak, nonatomic) IBOutlet UIImageView *imageView;
#property (weak, nonatomic) IBOutlet UILabel *label;
#property (weak, nonatomic) IBOutlet UIButton *removeButton;
#property (weak, nonatomic) P2OViewController *vc;
#property (weak, nonatomic) NSNumber *identifier;
-(void)takePicture:(id)sender;
-(void)buttonPressed:(id)sender;
#end
#import "PinViewController.h"
#import "MapPoint.h"
#import "P2OViewController.h"
#implementation PinViewController
#synthesize imageView, label, removeButton;
#synthesize vc = _vc, identifier = _identifier;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
UIBarButtonItem *pic = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCamera
target:self
action:#selector(takePicture:)];
[[self navigationItem]setRightBarButtonItem:pic];
}
return self;
}
-(void)takePicture:(id)sender
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc]init];
//If our device has a camera, we ant to take a picture, otherwise, we just pick from photo library
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
[imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
} else {
[imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
}
[imagePicker setDelegate:self];
//Place the image picker on the screen
[self presentViewController:imagePicker
animated:YES
completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
//Get picked image from info dictionary
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
//Put the image onto the screen in out image view
[imageView setImage:image];
//Take image picker off the screen - you must call this dismiss method
[self dismissViewControllerAnimated:YES
completion:nil];
}
#end
You surely have a class implementing the MKAnnotation protocol.
In this class simply add a UIImage property and assign to every annotation its custom image.
Then when presenting the detailed view you just pass around the annotation and access its image property you defined.
EDIT
In your PinViewController simply declare a property like this
#property(nonatomic, strong) MapPoint * annotation;
Before you present your PinViewController assign the corresponding annotation to it, doing something like
detailedController.annotation = theAnnotation;
Do whatever you need to do to get the image, then store it in the annotation in this way
self.annotation.image = theImage;
Now the annotation is storing the image, so as long as you keep it in memory it will be there available for you.
The next time you push the detailed view you can perform a check to see whether that annotation has already an image or not
if(nil != self.annotation.image) {
// do something
} else {
// do something else
}
I want to change the callout shown on the MKMapView. When I call
[self.mapView selectAnnotation:annotation animated:YES];
it pans the map to the annotation, but does not show its callout. How do I get it to show the callout?
Set the title, and optionally the subtitle property on the annotation object. MapKit will automatically show a callout.
#interface MyAnnotation : NSObject <MKAnnotation> {
NSString *title;
NSString *subtitle;
}
#property (nonatomic, copy) NSString *title;
#property (nonatomic, copy) NSString *subtitle;
#end
And the implementation,
#import "MyAnnotation.h"
#implementation MyAnnotation
#synthesize title, subtitle;
#end
Usage,
MyAnnotation *foo = [[MyAnnotation alloc] init];
foo.title = #"I am Foo";
foo.subtitle = "I am jus' a subtitle";
You should implement the MKAnnotation Delegate method
-(MKAnnotationView *)mapView:(MKMapView *)_mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
static NSString *AnnotationViewIdentifier = #"AnnotationViewIdentifier";
MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[_mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationViewIdentifier];
if (annotationView == nil)
{
annotationView = [[[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:AnnotationViewIdentifier]autorelease];
}
annotationView.canShowCallout = YES;
return annotationView;
}