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  • Disable animation when moving CALayers

    - by Sean Clark Hess
    The following code animates the movement, even though I didn't use beginAnimations:context. How do I get it to move without animating? This is a new iphone view project, and these are the only updates to it. // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; sublayer = [CALayer new]; sublayer.backgroundColor = [[UIColor redColor] CGColor]; sublayer.frame = CGRectMake(0, 0, 100, 100); [self.view.layer addSublayer:sublayer]; } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { sublayer.position = [[touches anyObject] locationInView:self.view]; }

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  • How to access the price of a product in SKPayment?

    - by favo
    I am having an In-App-Purchase for an iPhone app. I want to display the price in the users local currency in a UILabel. For this I need the price & currency in a variable. How can I get the price including the currency using SKPayment? (If SKPayment is correct for this use.) I'm instantiating the product using: SKPayment *payment = [SKPayment paymentWithProductIdentifier:@"Identifier"]; Thank you all in advance for your feedback!

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  • UIWebview: Dynamically adding html content

    - by user739711
    I am making an app in which I get text from my server and display it in UIWebview. After some time more text is added and client(iphone) is notified about the additional-text. Now I want to inject this text into my UIWebview. Anybody know how to do it? One method is to update some text file and reload the content. But I dont want to reload the page. Another way can be to use javascript to check updates in a local file (which seems better). Is there any known better solution?

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  • Expected specifier-qualifier-list before ... only in classes in a certain folder

    - by funkybro
    Hi Classes in my iPhone project are organised within folders on the filesystem, these correspond to groups (for each folder) in xcode. My problem is that there seems to be a particular class which classes in a particular group/folder cannot make reference to; the compiler complains of "Expected specifier-qualifier-list...". This happens on any class within this group, and also when I create a new class within this group and try and import the offending class like so: #import <Foundation/Foundation.h> #import "MyClass.h" @interface TryingToImport : NSObject { MyClass *myClass; // Expected specifier-qualifier-list before 'MyClass' } Creating an identical class in any other group works OK. I understand this error message is usually due to cyclical import references, I have checked over and over and there don't seem to be any of these. I assume I have inadvertantly configured the offending group to be different to the others in some way but I can't figure out how. Help please!

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  • How do I get selected background color from SecondView to pass to FirstView?

    - by rob
    I am going insane! This is a simple app with two Views. FirstView is a text field with info button to flip to SecondView. In SecondView I have 6 buttons for background color choice. When button is pushed the color of background changes perfectly but cannot make it also change background color for FirstView. Any help would be GREAT! Thanks! I am using Objective C class working on a iPhone app. Sorry new at this. The SecondView acts almost like a settings page in the fact that when a button is pushed the background color changes to the button color. I need it so when I push the "back" button to go back to FirstView the background color has also changed to that color choice. Been thru sooooooooo many tutorials and codes that now I am totally lost......... Thanks again!

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  • Good reasons why to not use XIB files?

    - by mystify
    Are there any good reasons why I should not use XIB / NIB files with an highly customized UI and extensive animations and super low memory footprint needs? As a beginner I started with XIB. Then I figured out I couldn't do just about everything in them. It started to get really hard to customize things the way I wanted them to be. So at the end, I threw all my XIBs away and did it all programmatically. So when someone asks me if XIB is good, I generally say: Yeah, if you want to make crappy boring interfaces and don't care too much about performance, go ahead. But what else could be a reason not to use XIB? Am I the only iPhone developer who prefers doing everything programmatically for this reasons?

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  • Inherit from UINavigationController

    - by d.andreykiv
    Hi. I'm developing iphone app with UITabBarController as main view. Every ViewController in each tab is UINavigationController which must have a same button in leftBarButtonItem. Can I inherit some class from UINavigationController and override it's -(id) initWithRootViewController:(UIViewController *)rootViewController method to realize this ? I made something like this. But this code doesn't work; @implementation MainNavagaionController -(id) initWithRootViewController:(UIViewController *)rootViewController { if (self = [super initWithRootViewController:rootViewController]) { // Set user name title UIBarButtonItem * userNameButton = [[UIBarButtonItem alloc]initWithTitle:@"Title" style:UIBarButtonItemStylePlain target:self action:nil]; self.navigationItem.leftBarButtonItem = userNameButton; [userNameButton release]; } return self; } @end

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  • Double-tap or two single-taps?

    - by Jaka Jancar
    What is the time limit for two taps to be considered a double-tap, on the iPhone OS? // Edit: Why is this important? In order to handle single-tap and double-tap differently, Apple's guide says to do performSelector...afterDelay with some 'reasonable' interval on first tap (and cancel it later if the second tap is detected). The problem is that if the interval is too short (0.1), the single tap action will be performed even when double-tapping (if relying only on tapCount, that is). If it's too long (0.8), the user will be waiting unnecessarily for the single-tap to be recognized, when there is no possibility for a double-tap. It has to be exactly the correct number, in order to work optimally, but definitely not smaller, or there's a chance for bugs (simultaneous single-tap and double-tap).

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  • Xcode, Dev Docs Search Field Loosing Focus?

    - by fuzzygoat
    I am having a strange issue with the developer documentation (which i have only noticed after installing Xcode 3.2.3). My problem is that as you type in the search field (upper right) it looses focus and immediately starts looking for the first few letters you type. For example if you looking for "NSObject" you start typing "NSO" and as you type the field looses focus the last 5 characters "bject" just give beeps as you need to reselect the field to type extra characters. Has anyone else come across this or know what the problem might be? cheers Gary.

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  • Binding data to scroll view

    - by Rahul Varma
    Hi, I am new to iphone dev. I have a Label and a scroll view. I am trying to get data from url and bind it to label and a scroll view. I am able to bind the data to label by using... UrlValues *asana=[[data yoga]objectAtIndex:i]; self.AsanaName.text = [asana asanatitle]; Similarly i want to bind some other data in the url to a scroll view. The data i want to bind is 4 or 5 sentences. So, can anyone help me how to do it... Any sample code will be really helpful... Thanks

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  • Long polling with NSURLConnection

    - by pix0r
    I'm working on an iPhone application which will use long-polling to send event notifications from the server to the client over HTTP. After opening a connection on the server I'm sending small bits of JSON that represent events, as they occur. I am finding that -[NSURLConnectionDelegate connection:didReceiveData] is not being called until after I close the connection, regardless of the cache settings I use when creating the NSURLRequest. I've verified that the server end is working as expected - the first JSON event will be sent immediately, and subsequent events will be sent over the wire as they occur. Is there a way to use NSURLConnection to receive these events as they occur, or will I need to instead drop down to the CFSocket API? I'm starting to work on integrating CocoaAsyncSocket, but would prefer to continue using NSURLConnection if possible as it fits much better with the rest of my REST/JSON-based web service structure.

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  • NSDateFormatter, am I doing something wrong or is this a bug?

    - by rustyshelf
    I'm trying to print out the date in a certain format: NSDate *today = [[NSDate alloc] init]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyyMMddHHmmss"]; NSString *dateStr = [dateFormatter stringFromDate:today]; If the iPhone is set to 24 hour time, this works fine, if on the other hand the user has set it to 24 hour time, then back to AM/PM (it works fine until you toggle this setting) then it appends the AM/PM on the end even though I didn't ask for it: 20080927030337 PM Am I doing something wrong or is this a bug with firmware 2.1? Edit 1: Made description clearer Edit 2 workaround: It turns out this is a bug, to fix it I set the AM and PM characters to "": [dateFormatter setAMSymbol:@""]; [dateFormatter setPMSymbol:@""];

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  • Typical text encoding and EOL behavior on mobile devices

    - by Dan W
    Typical things to worry about when dealing with text are the BOM/signature, encoding, and the end of line (EOL) char/chars. I know that Windows often favours \r\n (CR+LF) and Mac/Linux favours \n (LF), but how about popular mobile devices such as the iPhone and Android? Do typical apps on those platforms favour one or the other (or maybe even \r for iOS)? I'll supply both types to the user just in case, but I'd like to choose one as default. Also, which text encodings are mobiles most likely to use - UTF-8, iso-8859-1, Windows 1252 (or other default codepage) or maybe even UTF-16? And if they use UTF-8/16, are they likely to need (or require not having) a BOM/signature? What is the typical behavior here? Once again, I'll supply a range of encodings to the user just in case, but I'd like to prioritize or use certain encodings as default if it's appropriate.

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  • xCode 3.2.1 Alien Leak

    - by Mark
    Used code in entire project: - (void)applicationDidFinishLaunching:(UIApplication *)application { UITabBarController *tb = [[UITabBarController alloc] initWithNibName:nil bundle:nil]; [window addSubview:tb.view]; [tb release]; [window setBackgroundColor:[UIColor blackColor]]; [window makeKeyAndVisible]; } When the UITabBarController is added to the window view the following leak is detected bij Instruments: Leaked Object: Malloc 128 Bytes Address : 0x391ee70 Size : 128 Bytes Responsible Library : CoreGraphics Responsible Frame : open_handle_to_dylib_path This same issue occurs with UINavigationController, but does not appear with UIViewController. Specs: Mac OS X 10.6.2 xCode 3.2.1 Instruments 2.0.1 Compiled for iPhone Simulator 3.1.3 | Debug

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  • How to access the relative directory of a ASP.NET website?

    - by Michael Schilling
    I need to access a folder that will contain various text files for my web site. I'm using Visual Web Developer 2010 Express. I made a web site using visual basic. Here is the failing code: Dim fileName As String fileName = CurDir.ToString + fileName.Text + ".txt" FileOpen(1, fileName, OpenMode.Output) FileClose(1) CurDir.ToString is giving me strange directory path that isn't anywhere near where my website files are located. I need to be able to access the files in a folder inside of the WebSite1 folder without using C:\Users\..., but I'm at a loss on how to do that. Can anyone help me out?

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  • Auto height for label or textview within table view cell

    - by Leo
    Hi Folks, I have a problem in an iPhone application. Application has a table view controller with custom table view cells. Each cell has a Label (please correct me if I need to use text view etc). I am getting text dynamically from a web service call and I don't know how long text gonna be. Now problem is that I want to adjust the table view cell height based on text I receive. How can I grow Label or TextView height withinin table view cell so it can contain all the text and in effect grow table view cell height. Does anyone know how to handle this kind of design problem? Thanks

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  • iPhoneOS SDK - Remove Corner Rounding from views (iPad problem)

    - by norskben
    Hi Guys This might be a little bit picky, but in the iPad SplitViewController setup, there are 2 views. Each of the views has a very small black corner rounding. (This is probably the same with iPhone apps too). This rounding is visible in the image below. What I would like to do is remove the black rounding, so the UI doesnt get these two little bumps along the bottom. Has anyone done this, or know how to? -Its surely possible. Hopefully some one has seen this before. Thanks Image Link Mirror

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  • How to change font size in a pickerview?

    - by user183804
    I'm fairly new to iPhone programming and am trying to implement a double-component PickerView. At this point the picker works fine in terms of taking user input, created with Interface Builder. However, I need to change the font size to accommodate the text length in each column. I very much would appreciate any link to a straightforward method to creating a multi-component picker with an adjustable font size. Seems like it is not possible if Interface Builder is used to create the picker. So far I have not found any code links that address this issue in detail. Thanks in advance.

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  • PLCameraController is not adding in viewcontroller

    - by sujyanarayan
    Hi, I've declared PLCameraContoller instance in my AppDelegate class as:- self.cameraController = [PLCameraController performSelector:@selector(sharedInstance)];[cameraController setDelegate:self]; And I'm accessing it in one of my viewcontroller class as:- del = [[UIApplication sharedApplication] delegate]; UIView previewView = [del.cameraController performSelector:@selector(previewView)]; previewView.frame = CGRectMake(0,0, 320, 480); self.view = previewView; [del.cameraController performSelector:@selector(startPreview)]; [del.cameraController performSelector:@selector(setCameraMode:) withObject:(NSNumber)1]; Where "del" is an instance of my AppDelegate class. But i can see only black background in my viewcontroller view in iphone device. Also if i remove "self" from the appdelegate.m code of cameracontroller it also showing blank. How can i get camera in my view controller? I'm pretty much struggling with it. Thanks in Adv.

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  • get the row number from table view

    - by Faizan Tanveer
    i am new in iphone development, i am using table view to list name of the student, what i want to do is i want to get the row number of the cell the user pressed , currently i can get the name(string) of the cell, //code in didSelectRowAtIndexPath //the obj.name where is a string, it works fine obj.name=[obj.studentname objectAtIndex:indexPath.row]; //if i try obj.num , where num is nsinteger .i am getting errors of type i dnt understand obj.num=[[obj.studentname objectAtIndex:indexPath.row]count]; i even tried but i cant get the number. example if faizan lies on 12th cell. what i want to do is,is save 12 in a number and show it on the next view label.i cant put it in the variable thanks for your help in advance

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  • Import data from .xls File

    - by tek3
    HI, I am developing an application in which i have to get data from .xls file. I am fairly new to iPhone development so any pointers in direction to getting started will be very much helpful. The steps that i am thinking are : 1) First i need to convert .xls to .csv Format. 2)Import the data from .csv file to SQlite Databse or Core Data.(I am not familier with any one of them, so kindly suggest which one to choose. I am looking forward to use Core Data) Am I thinking in the right direction. Will be greatful for any kind of assistance.. Thanx in advance..

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  • Tutorial for texture mapping a map onto an Open GL ES sphere?

    - by hotpaw2
    I'm not looking for a library or even open source code. I want to learn how to do this on my own. Where do I start to find an online tutorial, a book chapter, or other educational material for generating a polygonal model of a 3D sphere suitable for feeding to Open GL ES on an iPhone, and then mapping the polygons to some sort of 2D map data so I can texture map the sphere? Is there some sort of software tool (blenders? mayan?) with a tutorial on how to do generate this data? Where is the best place to start?

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  • Assigning a view controller to be the delegate of a subview which is not directly descendent?

    - by ambertch
    I am writing an iphone app where in numerous cases a subview needs to talk to its superview. For example: View A has a table view that contains photos A has a subview B which allows users to add photos, upon which I want to auto append them to A's table view So far I have been creating a @protocol in B, and registering A as the delegate. The problem in my case is that B has a subview C that allows users to add content, and I want actions in C to invoke changes in its grandparent, A. Currently I am working around this by passing around a self pointer to my base view controller (C.delegate = B.delegate), but it doesn't seem very proper to me. Any thoughts? (and/or general advice on code organization when all sort of subviews needs to talk to superviews would be greatly appreciated) Thanks!

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  • How to do filtering data in UITableView like 'Recents' view in Phone application?

    - by Teerasej
    Hi, everyone. I am planning to applied the feature like 'Recents' view in Phone application of iPhone. This view show option on the top, 'All' and 'Missed'. Default option is 'All' but if you tap 'Missed' option the entry in UITableView which aren't 'Missed call' will slide out and disappear. This is the good feature. So I know you can help me by suggest or guide me some idea (any article is good too). I try to googling around but I couldn't find any good one.

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  • glDrawElements allocating memory and not releasing it

    - by Joshua Weinberg
    Using OpenGLES 1.1 on the iPhone 3G (device, not simulator), I do normal drawing fun. But at points during the run of the application I get giant memory spikes, after a lot of digging with instruments I have found that it is glDrawElements that is grabbing the memory. The buffer being allocated is 4 meg, which to me means its loading a texture into RAM, which I guess could be valid, but its never releasing this buffer, and is allocating multiple of them. How do I make sure that these buffers that GL is creating get destroyed, instead of just hanging around?

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