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  • Custom annotationView images revert to pins when clicked

    - by Danny Tuppeny
    I'm displaying custom images on a map (instead of the default pins) using the code below. However, when I tap on an item (and the callout appears), the image reverts to the default red pin. How can I keep my custom image, even when the callout is displayed? - (MKAnnotationView *) mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation { MKPinAnnotationView *pinAnnotation = nil; if (annotation != mapView.userLocation) { static NSString *pinID = @"mapPin"; pinAnnotation = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:pinID]; if (pinAnnotation == nil) pinAnnotation = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pinID] autorelease]; // Set the image pinAnnotation.image = [UIImage imageNamed:@"TestIcon.png"]; // Set ability to show callout pinAnnotation.canShowCallout = YES; // Set up the disclosure button on the right side UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; pinAnnotation.rightCalloutAccessoryView = infoButton; [pinID release]; } return pinAnnotation; [pinAnnotation release]; }

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  • What is the "stringWithContentsOfURL" replacement for objective C?

    - by Graeme
    I found a tutorial on the net that uses the stringWithContentsOfURL command that is now deprecated as of iPhone OS 3.0. However I can't find out what I'm meant to use instead, and how to implement it. Below is the code surrounding the stringWithContentsOfURL line in case you need it for reference. NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv", [addressField.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]]; NSArray *listItems = [locationString componentsSeparatedByString:@","]; Thanks.

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  • Timeout a NSThread after a certain amount of time

    - by Zen_silence
    Hello, I have a NSThread that i would like to timeout after a certain amount of time. [NSThread detachNewThreadSelector:@selector(someFuntion) toTarget:self withObject:nil]; - (void) someFunction { //Some calculation that might take a long time. //if it takes more then 10 seconds i want it to end and display a error message } Any help you can provide on this would be greatly appreciated. Thanks, Zen_silence

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  • UIImage color changing?

    - by senthilmuthu
    hi, how can i change the UIImage's Color through Programming,any help pls?if i send UIImage, its color must be changed ..any help please? if i change rgb color like the following through bitmaphandling it did not work.i have given blackcolor's RGB value like 0,0,0.....

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  • Objective-c Novice - Needs help with string with variable

    - by user544006
    Im trying to get my label to print out "your score is ." All i can find online is how to print using printf: int score=2; printf("You scored %i", score); But this does not work when using the setText method. I have also tried labelAnswer.setText:("You scored %i", score); [labelAnswer setText:("You scored %i", score)]; But these do not work. I get an error: "request for member in something not a structure or union" Can anyone help?

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  • cannot convert 'b2PolygonShape' to 'objc_object*' in argument passing

    - by GONeale
    Hey there, I am not sure if many of you are familiar with the box2d physics engine, but I am using it within cocos2d and objective c. This more or less could be a general objective-c question though, I am performing this: NSMutableArray *allShapes = [[NSMutableArray array] retain]; b2PolygonShape shape; .. .. [allShapes addObject:shape]; and receiving this error on the addObject definition on build: cannot convert 'b2PolygonShape' to 'objc_object*' in argument passing So more or less I guess I want to know how to add a b2PolygonShape to a mutable array. b2PolygonShape appears to just be a class, not a struct or anything like that. The closest thing I could find on google to which I think could do this is described as 'encapsulating the b2PolygonShape as an NSObject and then add that to the array', but not sure the best way to do this, however I would have thought this object should add using addObject, as some of my other instantiated class objects add to arrays fine. Is this all because b2PolygonShape does not inherit NSObject at it's root? Thanks

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  • Asynchronous callback for network in Objective-C Iphone

    - by vodkhang
    I am working with network request - response in Objective-C. There is something with asynchronous model that I don't understand. In summary, I have a view that will show my statuses from 2 social networks: Twitter and Facebook. When I clicked refresh, it will call a model manager. That model manager will call 2 service helpers to request for latest items. When 2 service helpers receive data, it will pass back to model manager and this model will add all data into a sorted array. What I don't understand here is that : when response from social networks come back, how many threads will handle the response. From my understanding about multithreading and networking (in Java), there must have 2 threads handle 2 responses and those 2 threads will execute the code to add the responses to the array. So, it can have race condition and the program can go wrong right? Is it the correct working model of iphone objective-C? Or they do it in a different way that it will never have race condition and we don't have to care about locking, synchronize? Here is my example code: ModelManager.m - (void)updateMyItems:(NSArray *)items { self.helpers = [self authenticatedHelpersForAction:NCHelperActionGetMyItems]; for (id<NCHelper> helper in self.helpers) { [helper updateMyItems:items]; // NETWORK request here } } - (void)helper:(id <NCHelper>)helper didReturnItems:(NSArray *)items { [self helperDidFinishGettingMyItems:items callback:@selector(model:didGetMyItems:)]; break; } } // some private attributes int *_currentSocialNetworkItemsCount = 0; // to count the number of items of a social network - (void)helperDidFinishGettingMyItems:(NSArray *)items { for (Item *item in items) { _currentSocialNetworkItemsCount ++; } NSLog(@"count: %d", _currentSocialNetworkItemsCount); _currentSocialNetworkItemsCount = 0; } I want to ask if there is a case that the method helperDidFinishGettingMyItems is called concurrently. That means, for example, faceboook returns 10 items, twitter returns 10 items, will the output of count will ever be larger than 10? And if there is only one single thread, how can the thread finishes parsing 1 response and jump to the other response because, IMO, thread is only executed sequently, block of code by block of code

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  • Turn a page (a UIWebView) with an animation

    - by Stefan
    Hi, I have a webview, which shows the pages of a ebook. I want to switch from one page to the next page with a page curl animation. By now, I'm know how to switch the page and how to apply a page curl animation on the webview. But how do I apply the curl animation in a way that it looks like flipping from one page to another?

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  • How to tell a rightCalloutAccessoryView has been touched for MapKit

    - by iamdadude
    I have a MKAnnotationView being allocated with a DetailDisclosure button being displayed on the right side of the annotation. How would I go about knowing when a user clicked on the annotation button? This is what my code looks like right now - UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; pinView.rightCalloutAccessoryView = rightButton; pinView.animatesDrop = YES; Is there a built in method to detect when a accessory view has been touched? I'm guessing it would be like the UITableView methods, but I can't find anything. Thanks for any help.

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  • Finding out estimated duration of a stream using Core Audio

    - by Reflog
    I am streaming a MP3 over network using custom feeding code, not AVAudioPlayer (which only works with URLs) using APIs like AudioFileStreamOpen and etc. Is there any way to estimate a length of the stream? I know that I can get a 'elapsed' property using: if(AudioQueueGetCurrentTime(queue.audioQueue, NULL, &t, &b) < 0) return 0; return t.mSampleTime / dataFormat.mSampleRate; But what about total duration to create a progress bar? Is that possible?

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  • How to display user location in mapkit?

    - by 4thSpace
    I'd like to display the blue pulsing dot for a user's location. I'm doing this: - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ //some other stuff here [self.mapView setShowsUserLocation:YES]; } But I eventually get -[MKUserLocation establishment]: unrecognized selector sent to instance 0x125e90 Should I be doing this some other way?

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  • Split NSData objects into other NSData objects with a given size

    - by Cedric Vandendriessche
    I'm having an NSData object of approximately 1000kb big. Now I want to transfer this via bluetooth. This would be better if I have let's say 10 objects of 100kb. It comes to mind that I should use the -subdataWithRange: method of NSData. I haven't really worked with NSRange. Well I know how it works, but then to read from a given location with the length: 'to end of file'... I've no idea how to do that. Some code on how to split this into multiple 100kb NSData objects would really help me out here. (it probably involves the length method to see how many objects should be made..?) Thank you in advance.

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  • Change (not init) a UIBarButtonItem identifier programatically?

    - by Nebs
    In IB I can set the identifier of a UIBarButtonItem to 'play' which adds an image of a play button (right-pointing triangle). Is there a way to change this image programatically? I want to change it to 'pause' when the play button is pressed. I know you can initialize a UIBarButtonItem with an identifier but I've yet to find a way to change it after it's been initialized. Is this even possible? The only thing I can think of is to remove the old button and initialize a new one in its place, but this hardly seems efficient. Any thoughts?

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  • Xcode - some variables don't show

    - by Mike
    This picture shows a debugging session. "lista" is a NSMutableArray containing, in this case, two elements: 0 and 1. Each element's content is seen on the debugging window as {(unichar *)Xcode_CFStringSummary($VAR, $ID)}:s but if I double click on any element, its value shows on a pop up window. Why is the values don't showing directly? How to force Xcode to show the values instead of this stupid and useless "{(unichar *)Xcode_CFStringSummary($VAR, $ID)}:s" ? thanks for any help.

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  • iPhone Title and Subtitle in Navigation Bar

    - by Reuven
    Hi there, In my application, I'd like to have the navigation bar display a title and subtitle. To that extent, I added the following code to my view controller: // Replace titleView CGRect headerTitleSubtitleFrame = CGRectMake(0, 0, 200, 44); UIView* _headerTitleSubtitleView = [[[UILabel alloc] initWithFrame:headerTitleSubtitleFrame] autorelease]; _headerTitleSubtitleView.backgroundColor = [UIColor clearColor]; _headerTitleSubtitleView.autoresizesSubviews = YES; CGRect titleFrame = CGRectMake(0, 2, 200, 24); UILabel *titleView = [[[UILabel alloc] initWithFrame:titleFrame] autorelease]; titleView.backgroundColor = [UIColor clearColor]; titleView.font = [UIFont boldSystemFontOfSize:20]; titleView.textAlignment = UITextAlignmentCenter; titleView.textColor = [UIColor whiteColor]; titleView.shadowColor = [UIColor darkGrayColor]; titleView.shadowOffset = CGSizeMake(0, -1); titleView.text = @""; titleView.adjustsFontSizeToFitWidth = YES; [_headerTitleSubtitleView addSubview:titleView]; CGRect subtitleFrame = CGRectMake(0, 24, 200, 44-24); UILabel *subtitleView = [[[UILabel alloc] initWithFrame:subtitleFrame] autorelease]; subtitleView.backgroundColor = [UIColor clearColor]; subtitleView.font = [UIFont boldSystemFontOfSize:13]; subtitleView.textAlignment = UITextAlignmentCenter; subtitleView.textColor = [UIColor whiteColor]; subtitleView.shadowColor = [UIColor darkGrayColor]; subtitleView.shadowOffset = CGSizeMake(0, -1); subtitleView.text = @""; subtitleView.adjustsFontSizeToFitWidth = YES; [_headerTitleSubtitleView addSubview:subtitleView]; _headerTitleSubtitleView.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin); self.navigationItem.titleView = _headerTitleSubtitleView; And also implemented a method: -(void) setHeaderTitle:(NSString*)headerTitle andSubtitle:(NSString*)headerSubtitle { assert(self.navigationItem.titleView != nil); UIView* headerTitleSubtitleView = self.navigationItem.titleView; UILabel* titleView = [headerTitleSubtitleView.subviews objectAtIndex:0]; UILabel* subtitleView = [headerTitleSubtitleView.subviews objectAtIndex:1]; assert((titleView != nil) && (subtitleView != nil) && ([titleView isKindOfClass:[UILabel class]]) && ([subtitleView isKindOfClass:[UILabel class]])); titleView.text = headerTitle; subtitleView.text = headerSubtitle; } Things work beautifully, thanks. Except that when rotating the iPhone to Landscape, the title+subtitle don't downsize in an automatic manner like the default title of the navigation item. Any pointers? Thanks!

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  • moviePlayBackDidFinish: is not called in application.

    - by srikanth rongali
    In my application I have used these notifications when playing a video. But, The problem is the control of the program is not entering in to the first two methods(moviePreLoadDidFinish and moviePlayBackDidFinish). It is entering into last method. So, after the video is played and I pressed Done button in the video, I cannot touch any object in screen. I mean I used play button for video to play in a view. After the video played the play button is deactivated. - (void) moviePreloadDidFinish:(NSNotification*)notification { } // Notification called when the movie finished playing. - (void) moviePlayBackDidFinish:(NSNotification*)notification { } // Notification called when the movie scaling mode has changed. - (void) movieScalingModeDidChange:(NSNotification*)notification { } I could not get where I was wrong ? Thank You.

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  • Converting NSDecimalNumber to NSString

    - by 4thSpace
    I'm retrieving a key from an object that looks like this: po obj { TypeID = 3; TypeName = Asset; } The key value is being retrieved like this: NSString *typeId = (NSString*)[obj objectForKey:@"TypeID"]; Rather than typeId being an NSString, it is an NSDecimalNumber. Why is that? How do I convert it to an NSString?

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  • Memory management in objective-c

    - by prathumca
    I have this code in one of my classes: - (void) processArray { NSMutableArray* array = [self getArray]; . . . [array release]; array = nil; } - (NSMutableArray*) getArray { //NO 1: NSMutableArray* array = [[NSMutableArray alloc]init]; //NO 2: NSMutableArray* array = [NSMutableArray array]; . . . return array; } NO 1: I create an array and return it. In the processArray method I release it. NO 2: I get an array by simply calling array. As I'm not owner of this, I don't need to release it in the processArray method. Which is the best alternative, NO 1 or NO 2? Or is there a better solution for this?

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  • Calling javascript from objective-c code

    - by Infinity
    Hello! I found a lots of ways to call objective-c code from javascript, but I want to call the javascript code from objective-c. Last time I submitted a HTML FORM from objective-c, and now I wan't to call a javascript method. What do you think, is there any way to call it and get the response? I am interested in any solution, but I started to think and I think I need to send a html call or something like this, but I am not sure about this because the javascript is client side code, so maybe I need to process it from my objective-c code. What do you think about this?

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  • Is it possible to change the border color of a UISearchDisplayController's search bar?

    - by prendio2
    I have a UISearchBar added as my table header with the following code. searchBar = [[UISearchBar alloc] initWithFrame:self.tableView.bounds]; searchBar.tintColor = [UIColor colorWithWhite:185.0/255 alpha:1.0]; [searchBar sizeToFit]; self.tableView.tableHeaderView = searchBar; Then I set my UISearchDisplayController up as follows. searchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self]; [searchDisplayController setDelegate:self]; [searchDisplayController setSearchResultsDataSource:self]; Everything functions as I would like except that the UISearchDisplayController has added a blue(ish) border above the search bar — this bar does not recognise the tintColor I have set on the search bar. Is it possible to change the color of this bar? It is obviously not absolutely crucial but that line is going to bug me forever if it stays blue like that!

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  • touchEvent in UIScrollview?

    - by senthilmuthu
    i am using ScrollviewDelegate Protocol in viewcontroller.but i am using Custom UIView(UIImageview)in that custom view touch began, touch ended is working ,but touchMoved is not called.how can i achieve this one?

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  • How to set the tableview's top using contentinset property while being at the bottom of the table

    - by neha
    Hi all, I'm having a tableview with 20 rows and 250 as their rowheight. While I'm at the bottom of the tableview, I want to shift the tableview upwards by 65px. I tried doing self.tableView.contentInset = UIEdgeInsetsMake(-65.0f, 0.0f, 0.0f, 0.0f); Also self.tableView.contentInset = UIEdgeInsetsMake((4633.0f - 65.0f), 0.0f, 0.0f, 0.0f); where 4633.0f is my contentoffset.y, but with no success. When the last cell is pulled upwards, I'm showing a view below the last cell with an activity indicator on it to depict that more data is getting loaded. I need to keep that view visible for 2 seconds so I want to push the tableview cells up and after that I want to bring the tableview to its original position and reset the view below that. I'm doing this [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.2]; // self.tableView.contentInset = UIEdgeInsetsMake((4633.0f - 65.0f), 0.0f, 0.0f, 0.0f); self.tableView.contentInset = UIEdgeInsetsMake(- 65.0f, 0.0f, 0.0f, 0.0f); [UIView commitAnimations]; and then calling a function to reset it back as self.tableView.contentInset = UIEdgeInsetsMake(0.0f, 0.0f, 0.0f, 0.0f); Can anybody please suggest how to do it? Thanx in advance.

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