In my app I am using Apple's KMLViewer to show annotations that I get from a KML file.In the file KMLParser.m, there is an instance variable, placemarkDescription that converts the information under Description tags from kml file to annotation subtitle.Now, in my file every annotation has the information stored under Description in this way:
<table width="280px"><tr><td></td><td></td></tr></table><table width="280px"><tr><td><b>Fitness Bulls</b>---Palester sportive. Sporti dhe koha e lire.....<a href="http://www.site.com/BIZ_DIR/810180432/Article-Fitness-Bulls.aspx" style="color:Green;" >Shikoni detajet >></a></td></tr><tr><td><a href="http://www.site.com/HartaV2/AddReview.aspx?gisDataId=8123855e-b798-40bc-ad2e-00346a931211" style="color:Green;" >Shkruani pershtypjen tuaj >> </a> <p style="float:right;">Postuar nga:<i>Import</i></p></td></tr></table>
In KMLParser.m i have transformed the placemarkDescription from that to this:
<html><body>
<table width="280px"><tr><td></td><td></td></tr></table><table width="280px"><tr><td>
<b>Fitness Bulls</b>---Palester sportive. Sporti dhe koha e lire.....
<a href="http://www.site.com/BIZ_DIR/810180432/Article-Fitness-Bulls.aspx" style="color:Green;" >Shikoni detajet >></a></td></tr><tr><td>
<a href="http://www.site.com/HartaV2/AddReview.aspx?gisDataId=8123855e-b798-40bc-ad2e-00346a931211" style="color:Green;" >Shkruani pershtypjen tuaj >> </a> <p
style="float:right;">Postuar nga:<i>Import</i></p></td></tr></table>
</body></html>
I've done this because I want to pas this string to a webView and visualize this in it.
The problem is that when the kml loads, the methods get the description information, get called severe times.Exactly as times as placemarks stored in the kml.So passing the string directly has no effect.If i choose to set active the subtitle option (annotation.subtitle = placemarkDescription in KMLParser), maybe I gen get the subtitle info of the annotation the user tapped, but I don't want to show this information because it shows like this
<table width="280px"><tr><td></td><td></td></tr></table><table width="280px"><tr......
By the way, I don't have any idea of how to get the subtitle info of the selected annotation.
So far, I have managed only to store the description information in an array (done this in the KMLParser.m).But what should I do with that array?How to know to which array entry corresponds the annotation the user tapped (the annotation that has the callout bubble opened).
So I don't know what to do.
Maybe I have not been too clear: What I want to do is get the Description information of a placemark (annotation), when the user taps an annotation in the map, tapping the disclosureButton should redirect him to a webView that shows the description Information.
EDIT code Added:
DetailViewController.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController<UIWebViewDelegate> {
UIWebView *webView;
UITextField *addressBar;
UIActivityIndicatorView *activityIndicator;
NSString *placemarkDescription;
}
#property (nonatomic, retain) IBOutlet UIWebView *webView;
#property (nonatomic, retain) IBOutlet UITextField *addressBar;
#property (nonatomic, retain) IBOutlet UIActivityIndicatorView *activityIndicator;
#property (nonatomic, retain) NSString *placemarkDescription;
-(IBAction) gotoAddress:(id)sender;
-(IBAction) goBack:(id)sender;
-(IBAction) goForward:(id)sender;
#end
DetailViewController.m
#import "DetailViewController.h"
#implementation DetailViewController
#synthesize webView, addressBar, activityIndicator, placemarkDescription;
- (void)viewDidLoad {
[super viewDidLoad];
[webView loadHTMLString:placemarkDescription baseURL:nil];
}
-(IBAction)gotoAddress:(id) sender {
NSURL *url = [NSURL URLWithString:[addressBar text]];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webView loadRequest:requestObj];
[addressBar resignFirstResponder];
}
-(IBAction) goBack:(id)sender {
[webView goBack];
}
-(IBAction) goForward:(id)sender {
[webView goForward];
}
- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {
if (navigationType == UIWebViewNavigationTypeLinkClicked) {
NSURL *URL = [request URL];
if ([[URL scheme] isEqualToString:#"http"]) {
[addressBar setText:[URL absoluteString]];
[self gotoAddress:nil];
}
return NO;
}
return YES;
}
- (void)webViewDidStartLoad:(UIWebView *)webView {
[activityIndicator startAnimating];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[activityIndicator stopAnimating];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)dealloc {
[super dealloc];
}
#end
PlacemarkAnnotation2.h
#import <Foundation/Foundation.h>
#import <MapKit/Mapkit.h>
#interface PlacemarkAnnotation2 : NSObject <MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString * title;
NSString * subtitle;
NSString * placemarkDescription;
}
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, retain) NSString * title;
#property (nonatomic, retain) NSString * subtitle;
#property (nonatomic, retain) NSString * placemarkDescription;
#end
PlacemarkAnnotation2.m
#import "PlacemarkAnnotation2.h"
#implementation PlacemarkAnnotation2
#synthesize coordinate, title, subtitle, placemarkDescription;
- (id) initWithCoordinate:(CLLocationCoordinate2D)coord andTitle:(NSString *)maintitle andSubtitle:(NSString *)subTitle {
self.coordinate = coord;
self.title = maintitle;
self.subtitle = subTitle;
return self;
}
-(NSString *) placemarkDescription
{
return placemarkDescription;
}
- (void) setPlacemarkDescription: (NSString *) pd
{
placemarkDescription = pd;
}
- (void) dealloc {
[title dealloc];
[subtitle dealloc];
[placemarkDescription dealloc];
[super dealloc];
}
#end
Changes in KMLParser.M
//KMLPoint class
- (MKShape *)mapkitShape
{
PlacemarkAnnotation2 *annotation = [[PlacemarkAnnotation2 alloc] init];
annotation.coordinate = point;
return [annotation autorelease];
}
//KMLPlacemark class
- (void)_createShape
{
if (!mkShape) {
mkShape = [[geometry mapkitShape] retain];
mkShape.title = name;
// Skip setting the subtitle for now because they're frequently
// too verbose for viewing on in a callout in most kml files.
NSString *lessThan = #"<";
NSString *greaterThan = #">";
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:lessThan
withString:#"<"];
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:greaterThan
withString:#">"];
NSString *beforeBody = #"<html><body>";
NSString *afterBody = #"</body></html>";
NSString *finalContent = [[beforeBody stringByAppendingString:placemarkDescription]
stringByAppendingString:afterBody];
placemarkDescription = finalContent;
mkShape.placemarkDescription = placemarkDescription;
}
}
Error found in this lines of code (No cause of crash description):
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view
calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#">>> Entering %s <<<", __PRETTY_FUNCTION__);
DetailViewController *dvc = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:[NSBundle mainBundle]];
PlacemarkAnnotation2 *pa = (PlacemarkAnnotation2 *)view.annotation;
dvc.placemarkDescription = pa.placemarkDescription;
[self presentModalViewController:dvc animated:YES];
[dvc release];
NSLog(#"<<< Leaving %s >>>", __PRETTY_FUNCTION__);
}
It's not clear how much of the KMLViewer sample app code you're using but one way to do this is to create your own annotation class instead of using the MKPointAnnotation class like the sample app does.
The custom class (eg. "PlacemarkAnnotation"), should implement the MKAnnotation protocol or be a sub-class of MKShape (if you are using the KMLViewer code). In the custom class, add a placemarkDescription property.
Where the KMLViewer code currently creates an MKPointAnnotation object, create a PlacemarkAnnotation instead and set its placemarkDescription property instead of the subtitle property.
Then in the viewForAnnotation delegate method, set the rightCalloutAccessoryView to a detail disclosure button.
Next, add to the project a detail view controller with a UIWebView in it. Add a placemarkDescription property to the view controller. In the viewDidLoad method, call loadHTMLString on the web view and pass it placemarkDescription (I think you can pass nil for the baseURL).
In the map view's calloutAccessoryControlTapped delegate method, create the detail view controller, set its placemarkDescription property and present it:
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view
calloutAccessoryControlTapped:(UIControl *)control
{
DetailViewController *dvc = [[DetailViewController alloc] init...
PlacemarkAnnotation *pa = (PlacemarkAnnotation *)view.annotation;
dvc.placemarkDescription = pa.placemarkDescription;
[self presentModalViewController:dvc animated:YES];
[dvc release];
}
Edit:
First, it looks like it will be best to subclass MKShape for your custom class instead of implementing the MKAnnotation protocol. The rest of the KMLViewer code is based on this assumption. So change #interface PlacemarkAnnotation2 : NSObject <MKAnnotation> to #interface PlacemarkAnnotation2 : MKShape. (By the way, for the NSString properties, copy is more appropriate than retain and it'll get rid of warnings.)
It also looks like you may have changed the type of the mkShape ivar in KMLPlacemark (and other places) from MKShape to something else. Change these types back to MKShape.
Next, _createShape might not be the best place to set the placemarkDescription since that method is called for both overlays and annotations. Remove your changes from that method and put them in the point method (also in KMLPlacemark). Note there are a couple of potential memory-related issues with your changes. Here's my suggestion:
- (void)_createShape
{
if (!mkShape) {
mkShape = [[geometry mapkitShape] retain];
mkShape.title = name;
// Skip setting the subtitle for now because they're frequently
// too verbose for viewing on in a callout in most kml files.
}
}
- (id <MKAnnotation>)point
{
[self _createShape];
if ([mkShape isKindOfClass:[PlacemarkAnnotation2 class]])
{
if (placemarkDescription != nil)
//check for nil, otherwise will crash when
//passing to stringByAppendingString below
{
NSString *lessThan = #"<";
NSString *greaterThan = #">";
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:lessThan
withString:#"<"];
placemarkDescription = [placemarkDescription stringByReplacingOccurrencesOfString:greaterThan
withString:#">"];
NSString *beforeBody = #"<html><body>";
NSString *afterBody = #"</body></html>";
NSString *finalContent = [[beforeBody stringByAppendingString:placemarkDescription]
stringByAppendingString:afterBody];
placemarkDescription = [finalContent retain];
//added retain above since finalContent is autoreleased
//and we are setting the ivar manually. otherwise,
//can result in EXC_BAD_ACCESS later.
}
PlacemarkAnnotation2 *pa2 = (PlacemarkAnnotation2 *)mkShape;
pa2.placemarkDescription = placemarkDescription;
return (id <MKAnnotation>)mkShape;
}
return nil;
}
Related
I have a map annotation that I would like to push to a detail view controller when the calloutAccessoryControlTapped is touched. The problem I'm having is that all annotations all send the same data to the detail vc. I'm not sure if it's the indexPath that's incorrect. Each map annotation shows the correct info in the callout box, it's just that when the calloutAccessoryControlTapped is tapped it pushes the same info for the first listing in the array it seems.
It's the NSNumber *catListingMapId; in the annotation that I really need to access and pass to the detail vc (and there I download data based on that catListingMapId).
- (void)mapView:(MKMapView *)mv annotationView:(MKAnnotationView *)pin calloutAccessoryControlTapped:(UIControl *)control {
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
MyAnnotation *theAnnotation = (MyAnnotation *) pin.annotation;
NSLog(#"the Annotation %#",theAnnotation.catListingMapId);
detailViewController.listingId = theAnnotation.catListingMapId;
// detailViewController.listingId = [[self.listingNodesArray objectAtIndex:selectedIndexPath] objectForKey:#"id"];
NSNumber *catNumber = [NSNumber numberWithInt:[catID intValue]];
detailViewController.catId = catNumber;
NSLog(#"detailViewController.listingId %#",detailViewController.listingId );
[self.navigationController pushViewController:detailViewController animated:YES];
}
here's my myAnntoationMap file:
#interface MyAnnotation : NSObject<MKAnnotation> {
CLLocationCoordinate2D coordinate;
NSString* title;
NSString* subtitle;
NSNumber *latString;
NSNumber *lngString;
NSNumber *catMapId;
NSNumber *catListingMapId;
}
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, copy) NSString* title;
#property (nonatomic, copy) NSString* subtitle;
#property (nonatomic,copy) NSNumber *latString;
#property (nonatomic,copy) NSNumber *lngString;
#property (nonatomic,copy) NSNumber *catMapId;
#property (nonatomic,copy) NSNumber *catListingMapId;
#end
and the .m
#import "MyAnnotation.h"
#implementation MyAnnotation
#synthesize title;
#synthesize subtitle;
#synthesize coordinate;
#synthesize latString,lngString;
#synthesize catMapId;
#synthesize catListingMapId;
- (void)dealloc
{
[super dealloc];
self.title = nil;
self.subtitle = nil;
self.latString = nil;
self.lngString = nil;
self.catMapId = nil;
self.catListingMapId = nil;
}
#end
MKMapViewDelegate having following delegate method,which is called every time when ever user tapped on calloutAccessory button, so here we get annotation title and subtitle,By using these values you can pass data to next viewController
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
NSLog(#"%#",view.annotation.title);
NSLog(#"%#",view.annotation.subtitle);
}
What has the index of the selected row ([self.tableView indexPathForSelectedRow]) got to do with the annotation that someone has selected on the map? And where does catID come from?
If you want to show something on the detailViewController that is related to the annotation that someone has just pressed then you need to use info from the pin, currently you are using two data points that do not come from that pin, and are probably the same every time, so that's what you see on the detailViewController.
detailViewController.listingId = theAnnotation.catListingMapId
and in detailViewController find the other details by listingID
EDIT:
in
#interface MyAnnotation
write a method:
- (NSDictionary *) getTheAnnotationData{
NSDictionary* theDict = [NSDictionary dictionaryWithObjectsAndKeys:
[NSString stringWithFormat:#"%f",latString],#"latString",
[NSString stringWithFormat:#"%f",lngString],#"lngString",
[NSString stringWithFormat:#"%i",catMapId],#"catMapId",
[NSString stringWithFormat:#"%i",catListingMapId],#"catListingMapId",
title,#"title",
subtitle,#"subtitle",
nil];
return theDict;
}
This method will give you all data from your annotation in a dictionary.
write it into .h too:
- (NSDictionary *) getTheAnnotationData;
then:
make a property in DetailViewController:
#property (nonatomic, retain) NSDictionary* detailDictionary;
then:
in your calloutAccessoryControlTapped method:
- (void)mapView:(MKMapView *)mv annotationView:(MKAnnotationView *)pin calloutAccessoryControlTapped:(UIControl *)control {
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
MyAnnotation *theAnnotation = (MyAnnotation *) pin.annotation;
NSLog(#"the Annotation %#",theAnnotation.catListingMapId);
detailViewController.detailDictionary = [theAnnotation getTheAnnotationData];
NSLog(#"detailViewController.listingId %#",detailViewController.listingId );
[self.navigationController pushViewController:detailViewController animated:YES];
}
then in detailViewController:
# synthesize detailDictionary
and in viewDidload:
you could get all of your data what you want about your annotation
I hope it helps
I know this is a common question but none of the answers fix my problem. I have a UIWebView in my app. I have everything set up correctly; the delegate is set, the webView is a property of my view controller. It is set up to load an html string upon loading the viewController. When the html string loads, in the webViewDidFinishLoad method it checks if this is the first time it loaded, and if it is it is told to load a request with a url. The string i use for the url is a property of my viewController. That string is exactly what it is supposed to be. There is just something preventing the webView from actually loading the request. Any ideas would be very much appreciated. Thank you
#interface WebViewController : UIViewController <UIWebViewDelegate, UIActionSheetDelegate, UIPrintInteractionControllerDelegate, MFMailComposeViewControllerDelegate, NSURLConnectionDelegate>
#property (nonatomic, assign) BOOL firstLoad;
#property (nonatomic, retain) UIWebView *webView;
#property (nonatomic, retain) NSString *prefixURLString;
#property (nonatomic, retain) NSString *suffixURLString;
#property (nonatomic, retain) UIActionSheet *actionSheet;
- (id)initWithTitle:(NSString *)newTitle andSuffixURL:(NSString *)suffix;
- (void)reload;
- (void)addActionButton;
- (void)showActions:(UIBarButtonItem *)sender;
- (void)dismissActionSheet;
#end
#implementation WebViewController
#synthesize webView;
#synthesize prefixURLString;
#synthesize suffixURLString;
#synthesize firstLoad;
#synthesize actionSheet;
- (id)initWithTitle:(NSString *)newTitle withPrefixURL:(NSString *)prefix andSuffixURL:(NSString *)suffix
{
self = [super initWithNibName:nil bundle:nil];
if (self) {
// Custom initialization
[self setPrefixURLString:prefix];
[self setFirstLoad:YES];
[self setTitle:newTitle];
[self setSuffixURLString:suffix];
[self setActionSheet:nil];
}
return self;
}
- (id)initWithTitle:(NSString *)newTitle andSuffixURL:(NSString *)suffix
{
return [self initWithTitle:newTitle withPrefixURL:#"https://customer.stld.com/flatroll/ios/%#" andSuffixURL:suffix];
}
- (void)reload
{
if(self.prefixURLString && self.suffixURLString)
{
NSString *fullURLString = [NSString stringWithFormat:self.prefixURLString, [self.suffixURLString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:fullURLString]]];
}
}
- (void)dealloc
{
[suffixURLString release]; suffixURLString = nil;
[prefixURLString release]; prefixURLString = nil;
[actionSheet release]; actionSheet = nil;
[super dealloc];
}
- (void):(UIWebView *)aWebView didFailLoadWithError:(NSError *)error
{
//NSLog(#"WebViewController:DidFailLoadWithError: %#", [error localizedFailureReason]);
[self setTitle:#"Loading Error"];
[self.webView loadHTMLString:[NSString stringWithFormat:#"<html><head><meta name=\"viewport\" content=\"width=device-width, user-scalable=yes\" /></head><body>Loading error:<br />%#</body></html>", [error localizedFailureReason]] baseURL:nil];
}
- (void)webViewDidFinishLoad:(UIWebView *)aWebView
{
if(self.firstLoad)
{
[self setFirstLoad:NO];
[self reload];
[self addActionButton];
}
}
#pragma mark - View lifecycle
- (void)loadView
{
UIWebView *newWebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 0, 0)];
[newWebView setDelegate:self];
[newWebView setScalesPageToFit:YES];
[newWebView setUserInteractionEnabled:YES];
[self setWebView:newWebView];
[self setView:newWebView];
[newWebView release];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.webView loadHTMLString:#"<html><head><meta name=\"viewport\" content=\"width=device-width, user-scalable=yes\" /></head><body><br />Gathering data and generating report.<br />Depends on data and parameters you have requested, this could take time. Please wait...</body></html>" baseURL:nil];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
[self.webView setDelegate:nil];
[self setWebView:nil];
[self setView:nil];
}
I had the same problem, I'm not entirely sure why, but I guess it has to do something with viewControllers life cycle. Anyway try load URL in viewDidAppear method. It fixed it for me. Hope it will help
It turns out my problem had nothing to do with the UIWebView. I just had to change the credential persistence in the URLConnectionDelegate I had set up for my app. I had it set as NSURLCredentialPersistanceNone but I changed it to NSURLCredentialPersistenceSession. I hope this can help anyone else out there who had the exact problem as I did
Here is what I am doing: Allowing the user to upload a photo and two description fields of the photo to MySQL using their iphone app. I have already figured out how to configure the app so that the text from the two description fields are uploaded (using PostURL and an accompanying .php file on my web server).
Where I am running into problems is how to add a photo into the mix, and have the photo AND text fields transmit together into the database into their corresponding columns (image, name, message).
What should my header and implementation files look like? And as an added bonus, what should my .php file look like? Here is how they exist currently, and as an FYI, this only works to transmit text, not the photo.
Header file:
#import <UIKit/UIKit.h>
#define kPostURL #"http://www.example.com/upload.php"
#define kName #"name"
#define kMessage #"message"
#interface FirstViewController : UIViewController<UINavigationControllerDelegate, UIImagePickerControllerDelegate>{
IBOutlet UITextField *nameText;
IBOutlet UITextView *messageText;
NSURLConnection *postConnection;
UIImageView * theimageView;
UIButton * choosePhoto;
UIButton * takePhoto;
}
#property (nonatomic, retain) IBOutlet UITextField * nameText;
#property (nonatomic, retain) IBOutlet UITextView * messageText;
#property (nonatomic, retain) NSURLConnection * postConnection;
#property (nonatomic, retain) IBOutlet UIImageView * theimageView;
#property (nonatomic, retain) IBOutlet UIButton * choosePhoto;
#property (nonatomic, retain) IBOutlet UIButton * takePhoto;
-(IBAction) getPhoto:(id) sender;
-(void) postMessage:(NSString*) message withName:(NSString *) name;
-(IBAction)post:(id)sender;
#end
Implementation file:
#import "FirstViewController.h"
#implementation FirstViewController
#synthesize nameText, messageText, postConnection, theimageView, choosePhoto, takePhoto,postData;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
-(void) postMessage:(NSString*) message withName:(NSString *) name {
if (name != nil && message != nil){
NSMutableString *postString = [NSMutableString stringWithString:kPostURL];
[postString appendString:[NSString stringWithFormat:#"?%#=%#", kName, name]];
[postString appendString:[NSString stringWithFormat:#"&%#=%#", kMessage, message]];
[postString setString:[postString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:postString]];
[request setHTTPMethod:#"POST"];
postConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
}
}
-(IBAction)post:(id)sender{
[self postMessage:messageText.text withName:nameText.text];
[messageText resignFirstResponder];
messageText.text = nil;
nameText.text = nil;
[[NSNotificationCenter defaultCenter] postNotificationName:#"Test1" object:self];
}
-(IBAction) getPhoto:(id) sender {
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
if((UIButton *) sender == choosePhoto) {
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
} else {
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
[self presentModalViewController:picker animated:YES];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissModalViewControllerAnimated:YES];
theimageView.image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#end
(^.^)"Hi sorry for my English is not good if someone like correct my redaction I would appreciate this"
Hi you can use (get, post, web services like soap, rest services like json) request.
From my experience if you like to send an image you have to use base64binary this is a string representation of array of bytes because I've never been able to send one array of bytes, but if is string you can send this normal without base64binary.
In my MapView, i read data from SQLite and display pins on it (up to 5000 record).
the database has the structure of ID| Longitude| Latitude | Title | subtitle
i used this code to make the pin clickable:
pin.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
i need to add a new column (Clickable) in the database, and make the pin clickable just if the "Clickable" value is ON.
any detailed suggestion about the best idea to do that?
From my experience if you don't set any property of the annotation (title,subTitle,image,accessory-button) and tap on the pin, the callout is not displayed.
Instead, if you want show the callout but not call an action when the accessory button is tapped, you could use a thing like this:
(After downloading the data from the db, you could store each item as a NSDictionary and then all items in a NSArray)
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control{
NSString *clickable=[[yourArray objectAtIndex:yourIndex] objectForKey:#"clickable"];
if(![clickable isEqualToString:#"YES"]){
return;
}
}
Of course I used a string as example, you may also use NSNumbers or BOOLs.
Hope i understood your question.
To control whether the callout has the accessory button based on the "clickable" flag in the table, I suggest you add a clickable property to your annotation class and set it when adding the annotation. Then you can check this property when creating the annotation view in the viewForAnnotation method.
To add the annotations to the map view (ie. when you call addAnnotation), if you are currently using a pre-defined class like MKPointAnnotation, you'll need to instead define your own custom class that implements the MKAnnotation protocol. If you already have a custom class, add a clickable property to it.
Here's an example of a custom annotation class:
//CustomAnnotation.h...
#interface CustomAnnotation : NSObject<MKAnnotation>
#property (nonatomic, assign) CLLocationCoordinate2D coordinate;
#property (nonatomic, copy) NSString *title;
#property (nonatomic, copy) NSString *subtitle;
#property (nonatomic, assign) int annotationId;
#property (nonatomic, assign) BOOL clickable;
#end
//CustomAnnotation.m...
#implementation CustomAnnotation
#synthesize coordinate;
#synthesize title;
#synthesize subtitle;
#synthesize annotationId;
#synthesize clickable;
- (void)dealloc {
[title release];
[subtitle release];
[super dealloc];
}
#end
Here's an example of how you would create and add the annotations (the actual values for the annotation properties will come from your sql rows):
CustomAnnotation *ca1 = [[CustomAnnotation alloc] init];
ca1.annotationId = 1;
ca1.coordinate = CLLocationCoordinate2DMake(lat1,long1);
ca1.title = #"clickable";
ca1.subtitle = #"clickable subtitle";
ca1.clickable = YES;
[myMapView addAnnotation:ca1];
[ca1 release];
CustomAnnotation *ca2 = [[CustomAnnotation alloc] init];
ca2.annotationId = 2;
ca2.coordinate = CLLocationCoordinate2DMake(lat2,long2);
ca2.title = #"not clickable";
ca2.subtitle = #"not clickable subtitle";
ca2.clickable = NO;
[myMapView addAnnotation:ca2];
[ca2 release];
Then the viewForAnnotation will look like this:
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
static NSString *reuseId = #"CustomAnnotation";
MKPinAnnotationView* customPinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:reuseId];
if (customPinView == nil) {
customPinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseId] autorelease];
customPinView.pinColor = MKPinAnnotationColorPurple;
customPinView.animatesDrop = YES;
customPinView.canShowCallout = YES;
}
else {
customPinView.annotation = annotation;
}
CustomAnnotation *ca = (CustomAnnotation *)annotation;
if (ca.clickable)
customPinView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
else
customPinView.rightCalloutAccessoryView = nil;
return customPinView;
}
Finally, you can handle the button press in the calloutAccessoryControlTapped delegate method and access your custom annotation's properties:
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
CustomAnnotation *ca = (CustomAnnotation *)view.annotation;
NSLog(#"annotation tapped, id=%d, title=%#", ca.annotationId, ca.title);
}
Bear with me on this one.
I have an iphone application. It is a questionnaire application. There are several types of question, some have a slider, some have text input etc. I have developed a view controller for each type of question.
Two example types of question controllers are: TextInputQuestionViewController and SliderQuestionViewController.
I have a rootViewcontroller named QuestionnaireViewController. This is defined as follows:
#import <UIKit/UIKit.h>
#import "JSONKit.h";
#import "dbConnector.h"
#import "SliderQuestionViewController.h";
#import "TextInputQuestionViewController.h";
#import "MainMenuProtocol.h";
#interface QuestionnaireViewController : UIViewController {
NSDictionary* questions;
NSMutableArray* questionArray;
NSMutableArray* answerArray;
dbConnector* db;
SliderQuestionViewController* currQ; //need to create a generic var
TextInputQuestionViewController* currQ;
NSInteger currQNum;
NSString* qaTitle;
NSString* secId;
id<MainMenuProtocol>delegate;
}
#property(nonatomic, retain) NSDictionary* questions;
#property(nonatomic, retain) NSMutableArray* questionArray;
#property(nonatomic, retain) NSMutableArray* answerArray;
#property(nonatomic, retain) dbConnector* db;
#property(nonatomic, retain) SliderQuestionViewController* currQ;
#property(nonatomic, retain) TextInputQuestionViewController* currTI;
#property(nonatomic) NSInteger currQNum;
#property(nonatomic, retain) NSString* qaTitle;
#property(nonatomic, retain) NSString* secId;
#property(nonatomic, retain) id <MainMenuProtocol> delegate;
-(void) setQuestions;
-(void) startQuestion:(NSInteger)index isLast:(BOOL)last;
-(void) loadQuestions;
-(void) initialise;
-(void) finishQuestionnaire:(id)sender;
-(void) switchViews:(id)sender;
#end
#import "QuestionnaireViewController.h"
#import "dbConnector.h"
#import "ASIHTTPRequest.h"
#import "JSONKit.h";
#import "Answer.h";
#implementation QuestionnaireViewController
#synthesize questions, questionArray, db, currQ, currQNum, answerArray, qaTitle, secId, delegate;
-(void)viewDidLoad{
[self initialise];
answerArray = [[NSMutableArray alloc]init];
[super viewDidLoad];
self.title = qaTitle; //set to whatever section is
}
-(void) initialise {
currQNum = 0;
[self loadQuestions];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:#"Start" style:UIBarButtonItemStylePlain target:self action:#selector(switchViews:)];
self.navigationItem.rightBarButtonItem = anotherButton;
}
-(void) loadQuestions {
db = [[dbConnector alloc]init];
//code to initialise view
[db getQuestions:secId from:#"http://dev.speechlink.co.uk/David/get_questions.php" respondToDelegate:self];
}
//called when questions finished loading
//stores dictionary of questions
- (void)requestFinished:(ASIHTTPRequest *)request
{
NSData *responseData = [request responseData];
NSString *json = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSDictionary *qs = [json objectFromJSONString];
self.questions = qs;
[json release];
[qs release];
[self setQuestions];
}
//assigns JSON to question objects
-(void) setQuestions {
questionArray = [[NSMutableArray alloc] init];
for (NSDictionary *q in self.questions) {
/* Create Question object and populate it */
id question;
if([[q objectForKey:#"type"] isEqualToString:#"Slider"]){
question = [[SliderQuestionViewController alloc]init];
//set min max values
}else if([[q objectForKey:#"type"] isEqualToString:#"Option"]){
}else if([[q objectForKey:#"type"] isEqualToString:#"TextInput"]){
question = [[TextInputQuestionViewController alloc]init];
}else if([[q objectForKey:#"type"] isEqualToString:#"ImagePicker"]){
}else{
//comments
}
//if else to create appropriate view controller - NEED to identify question type
[question setQuestionId:[q objectForKey:#"questionId"] withTitle:[q objectForKey:#"question"] number:[q objectForKey:#"questionNumber"] section:[q objectForKey:#"sectionId"] questionType: [q objectForKey:#"type"]];
/* Add it to question (mutable) array */
[questionArray addObject:question];
[question release];
}
}
-(void) startQuestion:(NSInteger)index isLast:(BOOL)last{
//currQ = [[QuestionViewController alloc]init];
currQ = [questionArray objectAtIndex:index];
//push currQ onto navigationcontroller stack
[self.navigationController pushViewController:currQ animated:YES];
[currQ addButton:self isLast: last];
}
//pushes new view onto navigation controller stack
-(void) switchViews:(id)sender{
Answer* ans = currQ.question.answer;
ans.questionId = currQ.question.qId;
ans.entryId = #"1";//temporary;
if(currQNum < [questionArray count] - 1){
if(currQNum > 0){
//if else for different input types
NSString* qt = currQ.question.qType;
if([qt isEqualToString:#"Slider"]){
ans.answer = currQ.sliderLabel.text;
}else if([qt isEqualToString:#"Option"]){
}else if([qt isEqualToString:#"TextInput"]){
//NSLog(#"%#", currQ.inputAnswer);
ans.answer = currQ.inputAnswer.text;
}else if([qt isEqualToString:#"ImagePicker"]){
}else{
}
[answerArray addObject: ans];
[ans release];
}
[self startQuestion:currQNum isLast:FALSE];
currQNum++;
}else{
ans.answer = currQ.sliderLabel.text;
[answerArray addObject: ans];
//store data temporarily - section finished
[self startQuestion:currQNum isLast:TRUE];
currQNum++;
}
[ans release];
}
-(void) finishQuestionnaire:(id)sender{
//go back to main manual
//if else statement for answers
NSString* answ = currQ.sliderLabel.text;
[answerArray addObject: answ];
[delegate finishedSection:answerArray section:secId];
[answ release];
[self.navigationController popToRootViewControllerAnimated:YES];
}
- (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.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
self.questions = nil;
self.currQ = nil;
[super viewDidUnload];
}
//hide back button in navigation bar
- (void) viewWillAppear:(BOOL)animated{
self.navigationItem.hidesBackButton = YES;
}
- (void)dealloc {
[currQ release];
[db release];
[questionArray release];
[questions release];
[super dealloc];
}
#end
the problematic lines with the above are in the switchViews function. I need to make the answer equal to the specific input component in that question view (slider value, text input value). So I need to make currQ a type that can be instantiated using any view controller.
I therefore need a generic variable to hold the current question. currQ holds the current question, but at the moment is of type SliderQuestionViewController. I tried to change this to id, but it throws a load of "Request For member...not a structure of union" and also a load of misassigned pointer issues.
Let me know if you need more code.
This reads like you want a pointer for a UIViewController, so just use that as the type. Then you can cast it down to whatever subclass you like later. For example:
-(void)myAction:(UIViewController *)vc {
SpecialViewController *svc = (SpecialViewController *)vc;
...
}
In your case, declare
UIViewController* currQ;
and then cast it as needed in the implementation to access the different properties and methods of your two subclasses.
If you're looking for a 'generic' variable, you should be able to use id. Make sure you don't define the type as id*, the asterisk should not be present.
A better idea, though, is to create a superclass for your question viewcontrollers. Create a superclass called QuestionViewController that inherits from UIViewController and have the Slider and TextInput (and any others) inherit from QuestionViewController. Then you can define your variable as: QuestionViewController* currQ; You can put any common functionality in that superclass as well and eliminate duplication.