iphone

SQLite Exception: SQLite Busy

Can anyone provide any input on this error. I am trying to insert into table using Objective C. While I am doing this, I am getting an error SQLite Busy. Why this is happening? ...

iPhone User Agent

Hello there! I'm building an iPhone app, that basically just displays information from an rss feed, and drags in some extra info from a related web site. I'm considering to put in some reporting code, eg the code provided by PinchMedia. I do have some issues with that, because I'll be monitoring users without consent. So, I was wondering...

Padding string to left with objective c

Hi There, How can one pad a string to left in objective c. E.g if if i have an integer value of 6 I want it to be displayed as 06. I use stringByPaddingToLength but it pads it to the right like 60. Your help is much appreciated. Tony ...

Multiple PageScrollViews (UIScrollViews) on the screen at once (not nested)

Warning: This is my first iPhone Application so there's a lot of cargo cult programming going on here. I've googled, searched stackoverflow, read books, and changed code over and over in an attempt to fix this and I can't. I'm using the PageScrollView class found in "iPhone SDK Application Development" by Jonathan Zdziarski. It is a cl...

How to display multi-line text without scroll in UIView?

I have multi-line non-HTML text (with newlines). Need to output it inside ScrollView or just UIView. I can't output it as UITextView: can't find how to resize UITextView to the size of text and/or disable scroll in it. Should I output text to Label? Or there's something more proper for that? Thanks. ...

Add media from iphone (outside of iPod library) into iTunes

Is there a way for my iPhone app to add media (mp3s) not in its iPod library to iTunes once the user plugs/syncs to a desktop such that the media will get sync'd back into the iPhone's iPod library? I know the question is rather general, but if it is indeed possible, can anyone nudge me in the right direction? ...

Use a UIWebView in the background

I would like to use a UIWebView object to run custom javascript methods against a local web page. I can do that, but I would like to do it in the background, I mean, while I'm showing a navigation controller or any other content, load webpages and call javascript methods on them. How would do that? ...

Change UIPickerView background

Hi I want to change the border color of a UIPickerView. I do not see a tint property for the UIPickerView. Is there any way this could be done? Or a workaround? Thanks. ...

Compiler Error: Invalid value in assignment when trying to change the origin of a UISwitch

Hi, The following piece of code is giving me a compiler error: Invalid value in assignment, while changing the origin. CGPoint switchOrigin = CGPointMake(currentOrigin.x, currentOrigin.y + kTweenMargin); UISwitch *choiceSwitch = [UISwitch alloc]; **choiceSwitch.frame.origin = switchOrigin;** But when I change it to the following it ...

Reference counting when implementing a delegate for custom class in ObjectiveC

I have two classes, ClassA that will instantiate ClassB and pass off a method as a delegate. ClassB will eventually invoke ClassA's delegate. Do I need to add a retain on ClassA when ClassB stores it? I'm following the "Implementing a Delegate for a Custom Class" from the "Cocoa Fundamentals Guide: Communicating with Objects" but the sa...

Should I learn on the iPhone App Dev 3.0 or not

I think the 3.0 update is coming out in July 09, that is about 30 days away. Coming from a C# background, I am learning objective C and my way around a mac. Should I start learning with the 2.2 or 3.0? ...

MPMoviePlayer crashes in device but works fine in simulator

Hi All, In my app i am playing a video using the following code. NSURL *myURL = [[NSURL alloc] initWithString:downloadURL]; mMoviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:myURL]; if (mMoviePlayer) { [self initMoviePlayer]; [mMoviePlayer play]; } This code is working fine in simulator, but when i test ...

Sorting an NSMutableArray with custom objects 'overwrites' some objects

For a little iPhone application I am making, I want to sort a NSMutableArray. I found 2 ways of doing this, but they both result in the same thing. Sorting the array will cause some objects to 'overwrite' eachother. First off, here is my code: AppDelegate.h NSMutableArray* highScores; Somewhere down that AppDelegate.h, I also make ...

How to word wrap text?

In Cocoa, there is a method (lineBreakBeforeIndex:withinRange:) on NSAttributedString to find appropriate line breaks in a piece of text. Since NSAttributedString does not exist on the iPhone, does anyone have any suggestions for similar functionality? Edit: Realized that I'm really looking for a word-wrap algorithm. For example, I wan...

Why would adding delegate to AVAudioPlayer cause "_NSAutoreleaseNoPool(): Object 0x55e060 of class NSCFString autoreleased with no pool in place - just leaking"?

I have been using a class to play sounds using AVAudioPlayer. Since I want to release these sounds right after they are played, I added a delegate. That causes a "_NSAutoreleaseNoPool(): Object 0x55e060 of class NSCFString autoreleased with no pool in place - just leaking" error right after the sound completes playing, but before my -a...

Navigating back & forward in a UINavigationController causes crash

I'm getting a consistent crash when I create a simple app that uses a navigation controller. Basically choosing an item in the first table successfully creates & pushes the sub viewcontroller, and the back button works just fine. But when I try to choose the item again I get a strange crash in GDB. I get no errors, simply the debugger...

Why does loading more than a megabyte of images consume all of my iPhone's memory?

I'm writing an application that needs to hold around forty 44 kb JPEGs in memory at once. I've heard that applications can use around 22 megabytes before triggering a low memory warning, so I'm pretty sure it should be able to do this. However, once I pass around a megabyte loaded, these messages start popping up in the console: Mon Ju...

Reference a library in Xcode for iPhone App

I am used to Visual studio, I have class library projects that I reference in my web sites or windows applications. Using class libraries allows me to create common functionalities, utilities once and use them over and over again. How do I do this with Xcode and iPhone App development? I am looking for some details on how to create the...

UIDatePicker and NSDate

I have an app where I ask for the users birthday with a UIDatePicker then store it in standard user defaults. When the app is opened again I get the date again and then want to set the UIDatePicker to that date but it's crashing and not accepting the date. It's being stored in the format "June 8, 2009." How do I need to do this? This is...

Is there any way to display the arrow button on UINavigationbar without actually pushing a controller?

As titled. I need a way to display the arrow buttom on UINavigationbar without actually pushing a controller. The reason why I can't push a controller is because I need to keep the keyboard displayed while transitioning. So to clarify: I start with a modal view controller (where there's nothing on the top left bar) like this - Then ...