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  • Interface Builder only allows one button to be "touchable"

    - by STLMikey
    I'm making a clone of the classic game simon, the memory matching game. My (iPad) app will load fine, i tap start, the game screen loads, and only one of my four buttons will respond to touch commands. To troubleshoot, I tried creating a second unrelated nib and just populating it with four buttons not linked to anything. However, only one of those four buttons would respond to touch! There are no IBActions being called, nothing. Both the view itself, and all four buttons are touch enabled in the inspector...I'm stumped. I'm moreso asking if anyone has encountered anything simillar, as I'd rather not burden potential help with app-specific questions if it's avoidable. Thank you!

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  • Can't return a String value and append it...why?

    - by squeezemylime
    I am writing an app and am having problems returning a simple string value, and I'm not sure why. The function I am using (within a file called APIManager.m) is: - (NSString*) returnVenueUrl { NSString *venueUrl = [devEnvironment stringByAppendingString:@"venue/id/"]; return venueUrl; } I can return this properly by doing this in another .m file: APIManager *apiManager = [APIManager apiManager]; NSLog(@"view venue URL is here: %@", [apiManager returnVenueUrl]); But when I go to append a variable cast as a String onto it, I get nothing.. venueURL = [apiManager returnVenueUrl]; venueURL = [venueURL stringByAppendingString:venueId]; NSLog(@"the Full Venue URL is: %", venueURL); If anyone has any advice on how to fix this, it would be much appreciated!

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  • Avaudioplayer problem

    - by Arun Sharma
    Hi All, Actually i am using avaudioplayer. my player is working very fine (forward,revind,play,pause,volume,progress bar). Only problem is that i am not able to stop the song. so all songs are overlapped please any body tell me where i put [self.player stop] to stop my player when i play new song.

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  • How to position a UIToolbar at the top of the screen?

    - by Mr_Nizzle
    I've figured out how to hide the navigation bar and then show the toolbar it has built-in but the toolbar appears at the bottom os the screen how can i position the toolbar on the top of the scren? here's some of my code UIBarButtonItem *yesterday = [[UIBarButtonItem alloc]initWithTitle:@"Yesterday" style:UIBarButtonItemStyleBordered target:self action:@selector(yesterday:)]; UIBarButtonItem *today = [[UIBarButtonItem alloc]initWithTitle:@"Today" style:UIBarButtonItemStyleDone target:self action:@selector(today:)]; UIBarButtonItem *tomorrow = [[UIBarButtonItem alloc]initWithTitle:@"Tomorrow" style:UIBarButtonItemStyleBordered target:self action:@selector(tomorrow:)]; UIBarButtonItem *month = [[UIBarButtonItem alloc]initWithTitle:@"Month" style:UIBarButtonItemStyleBordered target:self action:@selector(month:)]; NSArray *items = [NSArray arrayWithObjects:yesterday,today,tomorrow,month, nil]; [yesterday release]; [today release]; [tomorrow release]; [month release]; [self setToolbarItems:items]; [[self navigationController] setNavigationBarHidden:YES animated:NO]; [[self navigationController] setToolbarHidden:NO animated:YES]; Thanks.

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  • Why can't I save changes to application settings with NSUserDefaults?

    - by Brennan
    I am using the following code to save values from a settings view that takes values from a UITextField and stores them with NSUserDefaults. The code below even calls synchronize yet it is not saving the changes. What am I doing wrong here? - (IBAction)save { NSLog(@"save"); NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; if (self.usernameTextField.text != nil) { NSLog(@"username: %@", self.usernameTextField.text); [defaults setObject:kTwitterUsernameKey forKey:self.usernameTextField.text]; } if (self.passwordTextField.text != nil) { NSLog(@"password: %@", self.passwordTextField.text); [defaults setObject:kTwitterPasswordKey forKey:self.passwordTextField.text]; } [defaults synchronize]; [self dismissModalViewControllerAnimated:TRUE]; }

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  • strange memory error when deleting object from Core Data

    - by llloydxmas
    I have an application that downloads an xml file, parses the file, and creates core data objects while doing so. In the parse code I have a function called 'emptydatacontext' that removes all items from Core Data before creating replacements from the xml file. This method looks like this: -(void) emptyDataContext { NSMutableArray* mutableFetchResults = [CoreDataHelper getObjectsFromContext:@"Condition" :@"road" :NO :managedObjectContext]; NSFetchRequest * allCon = [[NSFetchRequest alloc] init]; [allCon setEntity:[NSEntityDescription entityForName:@"Condition" inManagedObjectContext:managedObjectContext]]; NSError * error = nil; NSArray * conditions = [managedObjectContext executeFetchRequest:allCon error:&error]; [allCon release]; for (NSManagedObject * condition in conditions) { [managedObjectContext deleteObject:condition]; } } The first time this runs it deletes all objects and functions as it should - creating new objects from the xml file. I created a 'update' button that starts the exact same process of retrieving the file the preceeding as it did the first time. All is well until its time to delete the core data objects again. This 'deleteObject' call creates a "EXC_BAD_ACCESS" error each time. This only happens on the second time through. See this image for the debugger window as it appears when walking through the deletion FOR loop on the second iteration. Conditions is the fetched array of 7 objects with the objects below. Condition should be an individual condition. link text As you can see 'condition' does not match any of the objects in the 'conditions' array. I'm sure this is why I'm getting the memory access errors. Just not sure why this fetch (or the FOR) is returning a wrong reference. All the code that successfully performes this function on the first iteration is used in the second but with very different results. Thanks in advance for the help!

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  • Is there an easy way to merge Localizable.strings files?

    - by mystify
    Problem: Using genstrings to create Localizable.strings files from a project. A few weeks later, some things changed and I run genstrings again. 75% of the new file is already in the old file. How could I merge the new file with the old file, so that the old file contains all of those 25% new key-value-pairs?

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  • Displaying very large images on the iPad

    - by Brodie4598
    I need to display some very large images on the iPad. The files are jpgs and are about 6700x2700 (maps). Is there any way around loading the entire image into memory? Currently I load it int a scroll view for zooming/panning. The images are stored locally on the device.

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  • Help - Getting wrong orientation

    - by barbgal
    Hi all, I am having one issue in my application which drives me mad... In my application, i rotate the simulator to the landscape mode but in my below function i get portrait orientation... what is the problem here. Pls help me out -(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { if ( interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown ) { NSLog(@" portrait orientation"); } else { NSLog(@"Landscape"); } }

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  • Mobile Safari Youtube opened via javascript

    - by Squeegy
    We have a youtube player embedded in a plage in Mobile Safari and it works great. But we need to be able to launch the youtube player by a means other than user tapping the video itself, for various reasons. So I am trying to figure out what event to trigger in javascript to make it happen with no luck. None of the following appear to work. var vid = document.getElementById('vid'); vid.click(); vid.onclick(); vid.ontouchend(); vid.ontouchstart(); vid.focus(); I tried to find an event handler added to the embedded object with this snippet, but didn't find anything. for (var key in vid) { if (typeof vid[key] == 'function') console.log(key +': '+ vid[key]); } Is this just so wrapped up in a custom plugin there is no way?

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  • MPMoviePlayerController playback problem

    - by Fahri
    Hello all, I'm having trouble with playing audio stream using MPMoviePlayerController in the background. On the foreground it's playing the audio just fine, but when the application goes to the background, sound disappears and the time keeps going. I have initialized the AVAudioSession with AVAudioSessionCategoryPlayback and have put the required background modes to audio in info.plist file. Also I have set player.useApplicationAudioSession = YES;. What could be the possible problem here? Thanks in advance :)

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  • Save UIView's representation to file.

    - by fish potato
    What is the easiest way to save UIView's representation to file? My solution is, UIGraphicsBeginImageContext(someView.frame.size); [someView drawRect:someView.frame]; UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); NSString* pathToCreate = @"sample.png"; NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(image)]; [imageData writeToFile:pathToCreate atomically:YES]; but it seems tricky, and I think there must be more efficient way to do this.

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  • UITableView Animation when entering Editmode

    - by f0rz
    Hi! Maybe I´m just stupid but I cant understand why this isnt working. I want to achieve a little animation when I'm entering editing mode within a UITableView. [super setEditing:NO animated:YES]; [myTable setEditing:NO animated:YES]; [myTable reloadData]; [self.navigationItem.leftBarButtonItem setTitle:@"Edit"]; [self.navigationItem.leftBarButtonItem setStyle:UIBarButtonItemStylePlain]; Shouldnt this animated:YES suppose to animated this entering of the editmode? Regards. - f0rz

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  • How To Get Values From UISegmentcontroller.

    - by iappdevs
    Hi, I Created Segment Control through Interface Builder. Created a IBAction and Linked to Value Changed Option of segment Controller. (IBAction)GenderBttonAction:(id)sender { printf("\n Segemt Controll"); } When i click on segment controller this method is calling , but how would i get the seleced index value of segment controller. Please help me dears.

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  • My xcode mapview wont work when combined with webview

    - by user1715702
    I have a small problem with my mapview. When combining the mapview code with the code for webview, the app does not zoom in on my position correctly (just gives me a world overview where i´m supposed to be somewhere in California - wish I was). And it doesn´t show the pin that I have placed on a specific location. These things works perfectly fine, as long as the code does not contain anything concerning webview. Below you´ll find the code. If someone can help me to solve this, I would be som thankful! ViewController.h #import <UIKit/UIKit.h> #import <MapKit/MapKit.h> #define METERS_PER_MILE 1609.344 @interface ViewController : UIViewController <MKMapViewDelegate>{ BOOL _doneInitialZoom; IBOutlet UIWebView *webView; } @property (weak, nonatomic) IBOutlet MKMapView *_mapView; @property (nonatomic, retain) UIWebView *webView; @end ViewController.m #import "ViewController.h" #import "NewClass.h" @interface ViewController () @end @implementation ViewController @synthesize _mapView; @synthesize webView; - (void)viewDidLoad { [super viewDidLoad]; [_mapView setMapType:MKMapTypeStandard]; [_mapView setZoomEnabled:YES]; [_mapView setScrollEnabled:YES]; MKCoordinateRegion region = { {0.0,0.0} , {0.0,0.0} }; region.center.latitude = 61.097557; region.center.longitude = 12.126545; region.span.latitudeDelta = 0.01f; region.span.longitudeDelta = 0.01f; [_mapView setRegion:region animated:YES]; newClass *ann = [[newClass alloc] init]; ann.title = @"Hjem"; ann.subtitle = @"Her bor jeg"; ann.coordinate = region.center; [_mapView addAnnotation:ann]; NSString *urlAddress = @"http://google.no"; //Create a URL object. NSURL *url = [NSURL URLWithString:urlAddress]; //URL Requst Object NSURLRequest *requestObj = [NSURLRequest requestWithURL:url]; //Load the request in the UIWebView. [webView loadRequest:requestObj]; } - (void)viewDidUnload { [self setWebView:nil]; [self set_mapView:nil]; [super viewDidUnload]; // Release any retained subviews of the main view. } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } - (void)viewWillAppear:(BOOL)animated { // 1 CLLocationCoordinate2D zoomLocation; zoomLocation.latitude = 61.097557; zoomLocation.longitude = 12.126545; // 2 MKCoordinateRegion viewRegion = MKCoordinateRegionMakeWithDistance(zoomLocation, 0.5*METERS_PER_MILE, 0.5*METERS_PER_MILE); // 3 MKCoordinateRegion adjustedRegion = [_mapView regionThatFits:viewRegion]; // 4 [_mapView setRegion:adjustedRegion animated:YES]; } @end NewClass.h #import <UIKit/UIKit.h> #import <MapKit/MKAnnotation.h> @interface newClass : NSObject{ CLLocationCoordinate2D coordinate; NSString *title; NSString *subtitle; } @property (nonatomic, assign) CLLocationCoordinate2D coordinate; @property (nonatomic, copy) NSString *title; @property (nonatomic, copy) NSString *subtitle; @end NewClass.m #import "NewClass.h" @implementation newClass @synthesize coordinate, title, subtitle; @end

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  • rotating circle with swipe question

    - by Joe
    Okay so I'm making something that basically works as a knob, but only half on the screen -- so I just need horizontal swipes to cause it to rotate. I have it nearly all sorted with one exception: if you change direction of your swipe in mid-swipe, the rotation doesn't change direction. I even can see the problem, but not sure what to do about a solution. So in my touchesMoved, I get the swipe into radians in the predictable way: CGFloat radians = atan2f(location.y - centerY, location.x - centerX); I then store radians, add/subtract it to previous rotation and then give the result to the CATransform3D. So the prob is that even though the swipe changes direction, there is a "balance" which doesn't allow an immediate change of direction. Does this make any sense?

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  • How can i see if dealloc is being called on a uikit object, or any object not created by myself

    - by Gyozo Kudor
    I think i have an UIImage that has a higher retain count than it should have and i am probably leaking memory. I use this image as a thumbnail, to set a custom background to a uibutton. So the uibutton is holding a reference to it and so do i. But instead of 2, the retainCount is 3. Do i have to create a custom UIImage derived class and override dealloc if I want to place a log message there and then change the class used from UIImage to my class, or is there an easier way. Thanks in advance.

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  • How to sum up a fetched result's number property based on the object's category?

    - by mr_kurrupt
    I have a NSFetchRequest that is returning all my saved objects (call them Items) and storing them in an NSMutableArray. Each of these Items have a category, an amount, and some other properties. My goal is to check the category of each Item and store the sum of the amounts for objects of the same category. So if I had these Items: Red; 10.00 Blue; 20.00 Green; 5.00 Red; 5.00 Green; 15.00 then I would have an array or other type of container than has: Red; 15.00 Blue; 20.00 Green; 20.00 What would be the best way to organize the data in such a manner? I was going to create a object class (call it Totals) that just has the category and amount. As I traverse through the fetch results in a for-loop, add Items with the same category in a Totals object an store them in a NSMutableArray. The problem I ran into with that is that I'm not sure how to check if an array contains a Totals object with a specific property. Specifically, a category that already exists. So if 'Red' exists, add the amount to it, otherwise create a new Totals object with category 'Red' and a the first Item's amount. Thanks.

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  • Animated status bar style transition, a la iPod app

    - by Ben Williamson
    In the iPod app, the navigation views have the default status bar style, and the Now Playing view is in the black style. The transition between them is animated with a crossfade. I want to do that. My first attempt: [UIView beginAnimations:@"whatever" context:nil]; [UIView setAnimationDuration:0.5]; self.navigationController.navigationBar.barStyle = UIBarStyleBlack; [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleBlack [UIView commitAnimations]; No joy, it pops to black. Takers?

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