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  • Does this have to be released?

    - by NextRev
    I've done a lot of research on when it's correct to release things, but it's all confusing to me. I think sometimes the Leaks program is off. Anyway... background is a UIImageView background.image = [UIImage imageNamed:@"greenbackground.png"]; Do I have to release background? I never alloced it and it's not set as a property, so I'm thinking no.

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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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  • CGContextDrawImage returning bad access

    - by Marcelo
    Hello guys, I've been trying to blend two UIImage for about 2 days now and I've been getting some BAD_ACCESS errors. First of all, I have two images that have the same orientation, basically I'm using the CoreGraphics to do the blending. One curious detail, everytime I modify the code, the first time I compile and run it on device, I get to do everything I want without any sort of trouble. Once I restart the application, I get error and the program shuts down. Can anyone give me a light? I tried accessing the baseImage sizes dynamically, but it gives me bad access too. Here's a snippet of how I'm doing the blending. UIGraphicsBeginImageContext(CGSizeMake(320, 480)); CGContextRef context = UIGraphicsGetCurrentContext(); CGContextTranslateCTM(context, 0, 480); CGContextScaleCTM(context, 1.0, -1.0); CGContextDrawImage(context, rect, [baseImage CGImage]); CGContextSetBlendMode(context, kCGBlendModeOverlay); CGContextDrawImage(context, rect, [tmpImage CGImage]); [transformationView setImage:UIGraphicsGetImageFromCurrentImageContext()]; UIGraphicsEndImageContext();

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  • UITableView cell animate background

    - by psychotik
    I have a UITableView with a bunch of rows. When some action occurs, I want to animate the background of a cell. I just want to make it grey and then fade it back to the default in .5 seconds. Is my only option to set the background and call [tableView beginUpdates] followed by [tableView endUpdates] and then set a timer to clear the background again, or is there some more fundamental animation technique I can use here?

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  • Scale an image every time it collide with another

    - by jean mayot
    here is my code : -(void)collision{ if(CGRectIntersectsRect(imageView.frame,centre.frame)){ imageView.alpha=0; [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1.0f]; centre.transform=CGAffineTransformMakeScale(1.3, 1.3); [UIView commitAnimations]; } } When imageView collide with centre centre become bigger. my problem is that when "imageView" collide with "centre" a second time the animation doesn't work. I want to make centre bigger and bigger and bigger every time imageView collide with center, but it become bigger just one time . Sorry for my english I'm french :/ How can I solve this please ?

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  • set different volumes inside app

    - by blacksheep
    i'd lioke to set the volume inside the touchesBegan action on half the volume of the IBAction. (void) awakeFromNib { [super awakeFromNib]; engine = [[Finch alloc] init]; E = [[RevolverSound alloc] initWithFile:PATH(@"E.wav")rounds:9]; } -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch = [[event allTouches] anyObject]; CGPoint location = [touch locationInView:self.view]; if(CGRectContainsPoint(Edrop.frame,location)){ [E play]; } } (IBAction)bass:(id)sender { if(CGRectIntersectsRect(finga.frame,e.frame)){ if(finga.center.y <= e.center.y) [E play]; } } thanx, blacksheep

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  • for question about autorotation

    - by user177893
    my superview is UItabelview and my subviews are UITabelview and UIDatePicker. for my subviews didn't able to call (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration why? bcoz this method calls when view rotates and at that time i want to set autoresizingmask method for that view so that when my subview rotates from Portrait to landscape mode it's view resizes automatically?

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  • Play sound when UIScrollView is scrolling

    - by Chonch
    Hey, I have a scroll view that can be scrolled to the sides (only left and right, not up and down). I want to play a short sound (less than a second) whenever the scroll view is moved X pixels to either side. How can this be done? Code samples will be greatly appreciated... Thanks,

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  • How to extract delegates from ViewController class?

    - by adranle
    Hi I have the problem that my view controller class has too many delegates and starts to get big. I want to write the delegates in separate classes to keep the view controller class small. For delegates that are programmatically created (like UIAlertViewDelegate) I could do it easily. The problem is in the delegates assigned in Interface Builder. How can I tell the IB to assign, for example, another class as the UITableViewDelegate or UITableViewDataSource? Or how to choose another IBAction method for a Touch UP inside Event on a button? One solution would be to delete the connections from IB and write them programmatically at ViewDidLoad, but since I have a lot of ViewControllers, this would take a long time. any other ideas?

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  • Providing lat/long AND title in iOS Maps URL seems to cause zoom level to be ignored

    - by Ian Howson
    I'm writing an iOS app that shows a location in Maps upon a user action. I'd like to drop a pin with a description and zoom in to show map detail. If I invoke Maps with the url http://maps.google.com/maps?q=-33.895851,151.18483+(Some+Description)&z=19 I get a pin with 'Some Description', but the zoom level is ignored. This does work on the Google Maps website. If I use http://maps.google.com/maps?q=-33.895851,151.18483&z=19 the zoom works, but I get no pin. I've tried a few combinations of ?q=, ?ll= and ?sll=, but so far, nothing will change zoom and show a description. Any clues? Just so we're really clear, here are some screenshots. I want this to work on a real device (i.e. with iOS Maps). The simulator uses Google Maps through Safari. Here's what I see with URL 1 ([[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"http://maps.google.com/maps?q=-33.895851,151.18483+(Some+Description)&z=19"]];) This is URL 2 ([[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"http://maps.google.com/maps?q=-33.895851,151.18483&z=19"]];): This is relikd's suggestion ([[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"http://maps.google.com/maps?z=19&q=-33.895851,151.18483+(Some+Description)"]];): I want the image I see in screenshot 2, but with a pin and a description.

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  • How can I move the clear button in a UITextField?

    - by Jake
    For some reason, when I add a UITextfield as a subview of the contentview of a tablecell, the clearbutton does not align with the text typed in the field, and appears a bit underneath it. Is there any way I can move the text of the clearbutton to stop this from happening? Thanks for any help,

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  • Removing UITextField from superview does not make it disappear on screen

    - by moshy
    I have the following code // Breakpoint here [label removeFromSuperview]; [label release]; label = nil; stepping through it with the debugger outputs (gdb) po [self subviews] <NSCFArray 0x476af70>( <UIImageView: 0x47581a0; frame = (0 0; 232 81); opaque = NO; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b3d0>>, <UILabel: 0x4758870; frame = (15 11; 202 56); text = 'Test'; clipsToBounds = YES; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b590>> ) (gdb) po label <UILabel: 0x4758870; frame = (15 11; 202 56); text = 'Test'; clipsToBounds = YES; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b590>> (gdb) n (gdb) n (gdb) n (gdb) po [self subviews] <NSCFArray 0x478c4e0>( <UIImageView: 0x47581a0; frame = (0 0; 232 81); opaque = NO; autoresize = W+H; userInteractionEnabled = NO; layer = <CALayer: 0x476b3d0>> ) Yet it is still visible, it does not disappear. Not even if I do [self setNeedsDisplay] immediately after. Has anyone else come across this? Is it a bug in the SDK or am I missing something?

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  • Public class: The best way to store and access NSMutableDictionary?

    - by meridimus
    I have a class to help me store persistent data across sessions. The problem is I want to store a running sample of the property list or "plist" file in an NSMutableArray throughout the instance of the Persistance class so I can read and edit the values and write them back when I need to. The problem is, as the methods are publicly defined I cannot seem to access the declared NSMutableDictionary without errors. The particular error I get on compilation is: warning: 'Persistence' may not respond to '+saveData' So it kind of renders my entire process unusable until I work out this problem. Here is my full persistence class (please note, it's unfinished so it's just to show this problem): Persistence.h #import <UIKit/UIKit.h> #define kSaveFilename @"saveData.plist" @interface Persistence : NSObject { NSMutableDictionary *saveData; } @property (nonatomic, retain) NSMutableDictionary *saveData; + (NSString *)dataFilePath; + (NSDictionary *)getSaveWithCampaign:(NSUInteger)campaign andLevel:(NSUInteger)level; + (void)writeSaveWithCampaign:(NSUInteger)campaign andLevel:(NSUInteger)level withData:(NSDictionary *)saveData; + (NSString *)makeCampaign:(NSUInteger)campaign andLevelKey:(NSUInteger)level; @end Persistence.m #import "Persistence.h" @implementation Persistence @synthesize saveData; + (NSString *)dataFilePath { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; return [documentsDirectory stringByAppendingPathComponent:kSaveFilename]; } + (NSDictionary *)getSaveWithCampaign:(NSUInteger)campaign andLevel:(NSUInteger)level { NSString *filePath = [self dataFilePath]; if([[NSFileManager defaultManager] fileExistsAtPath:filePath]) { NSLog(@"File found"); [[self saveData] setDictionary:[[NSDictionary alloc] initWithContentsOfFile:filePath]]; // This is where the warning "warning: 'Persistence' may not respond to '+saveData'" occurs NSString *campaignAndLevelKey = [self makeCampaign:campaign andLevelKey:level]; NSDictionary *campaignAndLevelData = [[self saveData] objectForKey:campaignAndLevelKey]; return campaignAndLevelData; } else { return nil; } } + (void)writeSaveWithCampaign:(NSUInteger)campaign andLevel:(NSUInteger)level withData:(NSDictionary *)saveData { NSString *campaignAndLevelKey = [self makeCampaign:campaign andLevelKey:level]; NSDictionary *saveDataWithKey = [[NSDictionary alloc] initWithObjectsAndKeys:saveData, campaignAndLevelKey, nil]; //[campaignAndLevelKey release]; [saveDataWithKey writeToFile:[self dataFilePath] atomically:YES]; } + (NSString *)makeCampaign:(NSUInteger)campaign andLevelKey:(NSUInteger)level { return [[NSString stringWithFormat:@"%d - ", campaign+1] stringByAppendingString:[NSString stringWithFormat:@"%d", level+1]]; } @end I call this class like any other, by including the header file in my desired location: @import "Persistence.h" Then I call the function itself like so: NSDictionary *tempSaveData = [[NSDictionary alloc] [Persistence getSaveWithCampaign:currentCampaign andLevel:currentLevel]];

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  • Load array from plist in Documents Directory

    - by Florent
    Hi all ! I use to load plist which are in my main Bundle (Ressource folder) into an array using : NSString *path = [[[NSBundle mainBundle] resourcePath]stringByAppendingPathComponent:nomPlist ]; NSMutableArray *tmpQuestion = [[NSArray alloc] initWithContentsOfFile:path]; arrayQuestion = [ [NSArray alloc] initWithArray:tmpQuestion]; [tmpQuestion release]; since i decide to change the content of my plist and that main bundle is read only how can i make this array loading plist from the Documents directory of my app ? ? thanks to all

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  • UIImageView is resizing

    - by dawatson833
    I have an issue with uiimageviews resizing at run time. On one view I have more than a dozen uiimageviews contained within a uiscrollview. The images are assigned at design time. The uiimageview's are all the same size. The mode is set to Aspect Fill for all uiimageviews. At run time the images appear correctly in the view. On a second view I have only 9 uiimageviews. These uiimageviews will display up to nine of the images selected from the first view. There are three images across and three images down. The uiimageview at design time is the same size as on the first view. The uiimageview image is assigned an image that is loaded into an array. All the uiimageviews are sized the same and they also have the mode set to Aspect Fill. The images are assigned at run time using image1.image = xxx. Where xxx is an image stored in an array. However, on this second view, the images are not all the same size. The height of the image changes dynamically. The same image displayed in a different uiimageview on the view will be different sizes. It is the height of the uiimageview that changes. In some cases the image will fill the uiimageview differently. It is like the mode changes dynamically. I've tried using different modes and nothing changes. Any ideas on what is happening?

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  • Core Data and Relationships

    - by alku83
    I have two objects, a Trip and a Place. A Trip represents a journey from one Place to another Place, ie. a Trip needs a fromPlace and a toPlace. So, this is a 1-to-2 relationship, but I need to know which is the "from" and which is the "to". I am not sure how to model this in Core Data. I have created two entities (Trip, Place), and now I want to setup the relationship(s) so I have a fromPlace and a toPlace. Do I need to add an extra field on the Place entity called isFrom, or similar? If this was in a database, I would just have a id column on the Place table, and then two columns in the Trip table - fromPlaceId and toPlaceId. How do I achieve something similar in Core Data?

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  • In-app subscription apps

    - by Ron Srebro
    Does anyone know of an app that implemented an in-app subscription? I thought about how the subscription model can be implemented and always ends up with more problems to every possible solution I can think of, so I'm wondering if anyone knows of an app that actually does that. Thanks

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  • Simple ViewController / View, remove white bar?

    - by fuzzygoat
    I am just looking at setting up a simple viewController programatically, I have a ViewController.xib file that I have set the background color to RED in interface builder. I have also added the following to my AppDelegate.m @implementation syntax_MapViewAppDelegate @synthesize window; -(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { viewController = [[MapViewController alloc] init]; [window addSubview:[viewController view]]; [window makeKeyAndVisible]; return YES; } -(void)dealloc { [viewController release]; [window release]; [super dealloc]; } @end When I run the code it does what I expect apart from the white bar at the bottom of the screen, can anyone give me any pointers in how to remove this? I have a feeling I might need to position the view within the window, but I am not sure how? cheers Gary

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