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  • UILabel not changing when method called

    - by LyonJTill
    - (IBAction)restoreUserDefaults { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; if([defaults objectForKey:@"Exam Name"] == nil) { examName = [[NSString alloc] initWithString:@"Name"]; } else { examName = [[NSString alloc] initWithString:[defaults objectForKey:@"Exam Name"]]; } [examNameLabel setText:[NSString stringWithFormat:@"%@",examName]]; } Hey all, Basically above is the method that is being called when one ViewController is being close and another is being opened the problem is, is that the UILabel in the new ViewController isn't changing to the value i need it to? Any ideas? Regards Lyon J Till

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  • Retain count = 0 in other function? memory-management problem?

    - by rdesign
    Hey guys, I declared a NSMutableArray in the header-file with: NSMutableArray *myMuArr; and @property (nonatomic, retain) NSMutableArray *myMuArr; In the .m file I've got a delegate from an other class: -(void)didGrabData:(NSArray*)theArray { self.myMuArr = [[[NSMutableArray alloc] initWithArray:myMuArr]retain]; } If I want to access the self.myMuArr in cellForRowAtIndexPath it's empty (I checked the retain count of the array and it's 0) What am I doing wrong? Of course it's released in the dealloc, no where else. I would be very thankfull for any help :0)

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  • Switching between TabBarController Views when event fired

    - by aahrens
    I have a UITabBarController with two different views to switch between. What I would like to do is when a button is clicked in View1 to switch directly to View2. Then in View2 if they click a button it switches them to View1. It transfers between View1 and View2 when the click on the tabBarController fine but I'm trying to perform the switching for them when an event occurs Is there a way to do this by calling a method on my UITabBarController? @interface CalcAppDelegate : NSObject <UIApplicationDelegate> { UITabBarController *tabBarController; }

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  • how to set Custom attribute of NSManagedObject which is calculated from other attributes ?

    - by Kundan
    I am using core data framework to manage objects.i have an entity which has several attributes of decimal types. Among them is attribute which is mathematically calculated from other attributes. Ex :- @interface Marks : NSManagedObject { } @property (nonatomic, retain) NSDecimalNumber * answerGradeA; @property (nonatomic, retain) NSDecimalNumber * answerGradeB; @property (nonatomic, retain) NSDecimalNumber * answerGradeC; @property (nonatomic, retain) NSDecimalNumber * total; Here i want attribute total = 3xanswerGradeA + 2xanswerGradeB + 1xanswerGradeC if it is possible to do like this, then how ? please reply. Thanks in advance.

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  • Using NSPredicate to filter on both Core attribute and entity

    - by Ben Thompson
    I have two entities in core data (call them entityOne and entityTwo). I have a entityOne<---entityTwo relationship between them. I am now trying to code an NSPredicate to fetch entityTwo objects on the following basis: Fetch entityTwo objects that have a relationship with a specified entityOne object. Filter out those entityTwo objects which have no value for one of their attributes. I am best doing both of these in an NSPredicate or is there a better way? I am trying the following: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"(attribute <> "") AND (relationship == entityOne"]; [request setPredicate:predicate]; Any pointers on coding great fully received.

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  • Is it true that one should not use NSLog() on production code?

    - by jpm
    I was told this a few times in this very site, but I wanted to make sure this is really the case. I was expecting to be able to sprinkle NSLog function calls throughout my code, and that Xcode/gcc would automatically strip those calls out when building my Release/Distribution builds. Should I avoid using this? If so, what alternatives are most common between experienced Objective-C programmers?

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  • Set Renderbuffer Width and Height (Open GL ES)

    - by Josh Elsasser
    I'm currently experiencing an issue with an Open GL ES renderbuffer where the backing and width are are both set to 15. Is there any way to set them to the width of 320 and 480? My project is built up on Apple's EAGLView class and ES1Renderer, but I've moved it from the app delegate to a controller. I also moved the CADisplayLink outside of it (I update my game logic with the timestamp from this) Any help would be greatly appreciated. I add the glview to the window as follows: CGRect applicationFrame = [[UIScreen mainScreen] applicationFrame]; [window addSubview:gameController.glview]; [window makeKeyAndVisible]; I synthesize the controller and the glview within it. The EAGLView and Renderer are otherwise unmodified. Renderer Initialization: // Get the layer CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer; eaglLayer.opaque = TRUE; eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; renderer = [[ES1Renderer alloc] init]; Render "resize from layer" Method - (BOOL)resizeFromLayer:(CAEAGLLayer *)layer { // Allocate color buffer backing based on the current layer size glBindRenderbufferOES(GL_RENDERBUFFER_OES, colorRenderbuffer); [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:layer]; glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth); glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight); NSLog(@"Backing Width:%i and Height: %i", backingWidth, backingHeight); if (glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) { NSLog(@"Failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES)); return NO; } return YES; }

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  • Can I stop UIImageView Animation at last frame?

    - by Ivan
    Hello, I have an animation using a UIImageView myAnimatedView.animationImages = myImages; myAnimatedView.animationDuration = 1; myAnimatedView.animationRepeatCount = 1; [myAnimatedView startAnimating]; How can I tell to animation to stop at the last frame or to be visible last frame of the series of images? Thank you in advance

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  • Push notification not received in ios5 device

    - by Surender Rathore
    I am sending push notification on device which has iOS 5.0.1, but notification is not received on iOS5 device. If i try to send notification on iOS4.3.3 device, it received on this device. My server is developed in c# and apple push notification certificate is used in .p12 format. My code to register the notification is - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. // Set the navigation controller as the window's root view controller and display. deviceToken = nil; self.window.rootViewController = self.navigationController; [self.window makeKeyAndVisible]; [[UIApplication sharedApplication] enabledRemoteNotificationTypes]; [[UIApplication sharedApplication] registerForRemoteNotificationTypes: UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert]; return YES; } - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)devToken { UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"Succeeded in registering for APNS" message:@"Sucess" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alertView show]; [alertView release]; deviceToken = [devToken retain]; NSMutableString *dev = [[NSMutableString alloc] init]; NSRange r; r.length = 1; unsigned char c; for (int i = 0; i < [deviceToken length]; i++) { r.location = i; [deviceToken getBytes:&c range:r]; if (c < 10) { [dev appendFormat:@"0%x", c]; } else { [dev appendFormat:@"%x", c]; } } NSUserDefaults *def = [NSUserDefaults standardUserDefaults]; [def setObject:dev forKey:@"DeviceToken"]; [def synchronize]; NSLog(@"Registered for APNS %@\n%@", deviceToken, dev); [dev release]; } - (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error { NSLog(@"Failed to register %@", [error localizedDescription]); UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"FAILED" message:@"Fail" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alertView show]; [alertView release]; deviceToken = nil; } - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { NSLog(@"Recieved Remote Notification %@", userInfo); NSDictionary *aps = [userInfo objectForKey:@"aps"]; NSDictionary *alert = [aps objectForKey:@"alert"]; //NSString *actionLocKey = [alert objectForKey:@"action-loc-key"]; NSString *body = [alert objectForKey:@"body"]; // NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:[self.navigationController viewControllers]]; // // if ([viewControllers count] > 2) { // NSRange r; // r.length = [viewControllers count] - 2; // r.location = 2; // [viewControllers removeObjectsInRange:r]; // // MapViewController *map = (MapViewController*)[viewControllers objectAtIndex:1]; // [map askDriver]; // } // // [self.navigationController setViewControllers:viewControllers]; // [viewControllers release]; //NewBooking,"BookingId",Passenger_latitude,Passenger_longitude,Destination_latitude,Destination_longitude,Distance,Time,comments NSArray *arr = [body componentsSeparatedByString:@","]; if ([arr count]>0) { MapViewController *map = (MapViewController*)[[self.navigationController viewControllers] objectAtIndex:1]; [map askDriver:arr]; [self.navigationController popToViewController:[[self.navigationController viewControllers] objectAtIndex:1] animated:YES]; } //NSString *sound = [userInfo objectForKey:@"sound"]; //UIAlertView *alertV = [[UIAlertView alloc] initWithTitle:actionLocKey // message:body delegate:nil // cancelButtonTitle:@"Reject" // otherButtonTitles:@"Accept", nil]; // // [alertV show]; // [alertV release]; } Can anyone help me out with this issue. Why notification received on iOS4.3 device but not on iOS5? Thank you very much!!! in advance

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  • Having a problem with reading a file using NSString initWithContents OfFile

    - by srikanth rongali
    In this program when I debug, it is showing the nil for fileNameString. I could not understand what is the problem. Please help me ? @implementation fromFileRead1 NSString *fileNameString; -(id)init { if( (self = [super init]) ) { fileNameString = [[NSString alloc] initWithContentsOfFile: @"enemyDetails.rtf" encoding:NSUTF8StringEncoding error:nil]; NSArray *lines = [fileNameString componentsSeparatedByString:@"\n"]; for (id *line in lines) { NSLog(@"Line1%@", line ); } } return self; } @end Thank You.

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  • Tableview with sections managed by fetched results controller

    - by Matthes
    Hi, I'm quite new to CoreData and need help with one issue. I have tableview which simply lists cities stored in SQLite db. City is defined by "cityId" and "name" attributes. Data are fetched using NSFetchedResultsController and everything works fine except that I can't figure out how to make FetchedResultsController to group cities by first letter of city names. When I supply "name" for sectionNameKeyPath argument of initWithFetchRequest:managedObjectContext:sectionNameKeyPath:cacheName: method, it creates section for each city, which is obviously something I don't want. I can't figure out how to create an expression which would make it work in way I need. thanks for any tips and/or advices on this Matthes

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  • How to animate stuff when using -drawRect: ?

    - by mystify
    I didn't use subviews but painted my things with -drawRect: inside an UIView subclass. Now I want to do some animations in there. I guess that I can't count on core animation now since I have no subviews. So how would I animate then? Would I set up a timer which fires like 30 times per second? How would I know the animation step? Would I make an ivar which counts the frame of the animation so that I can do my stuff in -drawRect as it gets called?

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  • Detect and handle, or override, clicks on a navigation bar

    - by Henrik Erlandsson
    I have an app where I've pushed two items onto the navigation bar. The top item, which ends up as a 'back' button, should have the function to jump all the way back to the start page, which is a list of web news. The other one simply displays a logo. The boss wants a navigation bar look and feel but with a simple function, so the user can click around the news site, but always be able to jump to the news list page with just the one click. Is the only option to create a fixed navbar with two items in IB, so that I can connect an outlet to the clickable item - or is there some way to intercept clicks to the navbar to make a requestURL? touchesBegan or touchUpInside would be fine, but I've found no way of implementing that so far. It's okay if the whole navbar is clickable, I just need some hint how to make it happen. Add a transparent UIlabel on top and detect clicks for that, maybe? A bonus would be to hide the item in the 'back' position without popping it from the stack.

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  • Releasing Autoreleasepool crashes on iOS 4.0 (and only on 4.0)

    - by samsam
    Hi there. I'm wondering what could cause this. I have several methods in my code that i call using performSelectorInBackground. Within each of these methods i have an Autoreleasepool that is being alloced/initialized at the beginning and released at the end of the method. this perfectly works on iOS 3.1.3 / 3.2 / 4.2 / 4.2.1 but it fataly crashes on iOS 4.0 with a EXC_BAD_ACCESS Exception that happens after calling [myPool release]. After I noticed this strange behaviour I was thinking about rewriting portions of my code and to make my app "less parallel" in case that the client os is 4.0. After I did that, the next point where the app crashed was within the ReachabilityCallback-Method from Apples Reachability "Framework". well, now I'm not quite sure what to do. The things i do within my threaded methods is pretty simple xml parsing (no cocoa calls or stuff that would affect the UI). After each method finishes it posts a notification which the coordinating-thread listens to and once all the parallelized methods have finished, the coordinating thread calls viewcontrollers etc... I have absolutely no clue what could cause this weird behaviour. Especially because Apples Code fails as well. any help is greatly appreciated! thanks, sam

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  • Customizing File Linkage for a Build Configuration (Not Buil Target)

    - by ZaBlanc
    I have a project that has several build configurations (FREE version, male-only, female-only, etc.). I am avoiding using multiple build targets because (A) the products are mostly all the same and (B) I don't want to have to do checkbox-management to keep every file I have included with all the targets. However, I have just a few files it would be nice NOT to include in certain builds. For example, I have male and female voice files, but I only want the male files in the male build and female voices in the female build. Question...is there a way to manage the build configuration to prevent these files from being included/linked in? What are my options?

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  • Updating the getDistanceFrom between two annotations in MapKit

    - by Krismutt
    Hey everybody! I wanna have a UILabel that shows the distance between two annotations... but how do I get it to update the distance each time the current location is updated (location)?? CLLocationCoordinate2 savedPlace = savedPosition; CLLocationCoordinate2D currentPlace = location; CLLocation *locCurrent = [[CLLocation alloc] initWithLatitude:currentPlace.latitude longitude:currentPlace.longitude]; CLLocation *locSaved = [[CLLocation alloc] initWithLatitude:savedPlace.latitude longitude:savedPlace.longitude]; CLLocationDistance distance = [locSaved distanceFromLocation:locCurrent]; [showDistance setText:[NSString stringWithFormat:@"%g", distance]]; Thanks in advance!

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  • UIPickerView didSelectRow delay

    - by Rob Bonner
    Hello all, I have a UIPickerView implemented in one of my pages that depends on the didSelectRow delegate method. An odd behavior I have noticed is when the user moves a wheel and leaves it between selections, then the wheel will move very slowly to the closest selection. The didSelectRow event will not fire until this is complete, sometimes 3 seconds later. Is there a way to speed this up, or detect when the wheel is being moved, so I can freeze my interface during this time?

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  • Problem to get a Substring from a String?

    - by raaz
    Hi all, i have a little question ,i have a NSString object (\n "1 Infinite Loop",\n "Cupertino, CA 95014",\n USA\n) and i want the Cupertino from this string Till now i have used stringByReplacingOccurrencesOfString: and able to get "1InfiniteLoop""CupertinoCA95014"USA But still not able get Cupertino. Do any other method able to solve this problem?

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  • UIViewController is popped from view stack and NSURLConnection crashes the application

    - by rickharrison
    I am pushing a UIViewController onto a UINavigationController. This view controller immediately starts a download of an xml feed and then parses it. However, if you hit the back button before it is done downloading, and crashes with EXC_BAD_ACCESS. The line that is crashing it is in parserDidEndDocument and is this line: if (self.delegate && [self.delegate conformsToProtocol:@protocol(ModelDelegate)]) [self.delegate modelDidFinishParsing:self]; I assume it is crashing because it is trying to access self.delegate which is not assigned anymore. How do I get around this? Also, I would release the model object in the modelDidFinishParsing method. How would I release this model if it never reaches this method.

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  • cocos2d 2.x scene retainCount

    - by Shefy Gur-ary
    I'm pushing a scene to the game I'm working on, after pressing a button in the main menu. This scene is a gameplayScene which should have two layers ad childs: boardLayer and hudLayer. for now I'm testing with the boardLayer, I'm using block to call the gameplayScene to close both itself and the boardLayer, but by the time I get there the retain count of both layer is 3 (seems to be increasing after setting the block to 2, and I'm not sure when it is going up to 3) What cause this, and how should it be handled?

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  • Callback from static library

    - by MortenHN
    I think this should be simple, but im having a real hard time finding information about this topic. I have made a static library and have no problem getting the basics to work. But im having a hard time figuring out how to make a call back from the static library to the main APP. I would like my static library to only use one header as front, this header should contain functions like: requestImage:(NSString *)path; requestLikstOfSomething:(NSSting *)guid; and so on.. These functions should do the necessary work and start a async NSURLConnection, and call back to the main application when the call have finished. How do you guys do this, what are the best ways to callback from a static library when a async method is finished? should i do this with delegates (is this possible), notifications, key/value observers. I really want to know how you guys have solved this, and what you regard as the best practices. Im going to have 20-25 different calls so i want the static library header file to be as simple as possible preferable only with a list of the 20-25 functions. UPDATE: My question is not how to use delegate pattern, but witch way is the best to do callbacks from static librarys. I would like to use delegates but i dont want to have 20-25 protocol declarations in the public header file. I would prefer to have only one function for each request. Thanks in advance. Best regards Morten

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  • i have project code in cocos and cocos2d and have problem in orientation

    - by Sukhi
    i have project code in cocos and cocos2d and have problem in orientation . my game is in landscape mode part of its code in cocos2d and another one is in cocos . cocos2d views orientations is working fine . i put this code in appdelegate.m file -(void)orientationChanged:(NSNotification *)notification { UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation]; if( orientation == UIInterfaceOrientationLandscapeLeft) { [[CCDirector sharedDirector] setDeviceOrientation: kCCDeviceOrientationLandscapeRight]; } else if( orientation == UIInterfaceOrientationLandscapeRight) { [[CCDirector sharedDirector] setDeviceOrientation: kCCDeviceOrientationLandscapeLeft]; } } but when i go to cocos code its view look good but as soon as i change the rotation LandscapeRight to LandscapeLeft my views goes in potrate mode i wrote following code in UIViewController (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Overriden to allow any orientation. BOOL orienationStatus=FALSE; if (interfaceOrientation ==UIInterfaceOrientationLandscapeLeft || interfaceOrientation==UIInterfaceOrientationLandscapeRight) { orienationStatus=TRUE; } return orienationStatus; } whats wrong in that i don't know .... help will be appreciated .....

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