iphone

How can I use corertelephony framework in iPhone

I need to include coretelephony framework in my App. I am using jailbreak phone. Is there any sample code available for it. Please healp Thanks SD ...

CGImage/UIImage lazily loading on UI thread causes stutter

My program displays a horizontal scrolling surface tiled with UIImageViews from left to right. Code runs on the UI thread to ensure that newly-visible UIImageViews have a freshly loaded UIImage assigned to them. The loading happens on a background thread. Everything works almost fine, except there is a stutter as each image becomes ...

Convert NSData [UIImage] to a NSString

Hi, I am aware this question has been asked several times, but I was unable to find a definate answer that would best fit my situation. I want the ability to have the user select an image from the library, and then that image is converted to an NSData type. I then have a requirement to call a .NET C# webservice via a HTTP get so ideally...

How to obtain an unformatted string representation of an NSDecimal or NSDecimalNumber?

I have an NSDecimal and need this as technical string, i.e. with no formatting in any way. Floating point should be a "." if there is any, and minus sign should just be a "-" if there is any. besides that, there should be no formatting going on like grouping or chinese numbers. I was looking for 2 hours through the SDK but it seems ther...

iPhone Application Linking/Compile Errors

I'm working on an iPhone application. I added a new framework to my project, and this caused a bunch of linking errors, with the following error for each framework I'm using: ld: warning: in /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk/System/Library/Frameworks/Foundation.framework/Foundation, missing required ...

How do I create a TableView like in network Settings App on the iphone?

Hey, How do i make such a Table view? So if I turn on the switch, 2 cells should be added. I've already tried [tableView numberForRowsInSection:6]; [tableView reloadData]; but this doesn't work as expected :( any ideas? The best thing would be 2 sections the first section contains 5 cells, the second section contains one cell wit...

One to Many Tableviews with Core Data

Although there is sample code in the ADC for parent/child (one to many rather than inheritance) core data, the child relationship is managed by simply loading all of the related objects into a set, and then into an array. The application I have in mind may have huge amounts of related data per parent object, therefore I would like to use...

NSStream reading\writing outside the delegate method handleEvent:eventCode

Hi, in an iPhone app, I have a socket connection through wifi, and I need to read from inputStream and write to outputStream. The problem is that stream management is event-driven, and I have to wait for event NSStreamEventHasBytesAvailable before reading. So I can't know when reading\writing outside the handleEvent:eventCode delegate me...

collections on appdelegate get stomped

I am a 15 year veteran of C++ and thought I could easily handle the memory issues on the iPhone. But I have been humbled by this new environment at several turns. Here is my problem. I hope I am asking the question correctly. Basically, I am keeping a mutable array of my common object at the appdelegate. This seems like the reasonab...

UIPageControl Help

Hey guys, I need to use UIPagecontrol for my application, and I'm not sure how to get started. I'm a beginner, and the examples that apple gives me are pretty complicated. All I need are 3 pages with different views for each of them. Can anyone help me out here? P.S. remember that I'm a beginner! :D thanks ...

IPHONE: listing all views and subviews created by my app

A few weeks ago I found somewhere a code that allows one to dump to the terminal, using NSLOG, a hierarchic list of all view, subviews and objects created by an application, but I cannot find this code anymore? Do you guys know how to do that? thanks in advance for any help! ...

IPHONE: variables in instruments

When using instruments to debug memory allocation, you can see how much an allocation is using, its address in memory, etc. My question is: is there any way to know which variable/object in your code corresponds to that memory allocation, inside instruments? thanks for any help. ...

How to init UIViewController with UIInterfaceOrientationLandscapeLeft ?

Hi I have a WebViewController that inherits from UIViewController and also use shouldAutorotateToInterfaceOrientation. Well so good so far, but when I switch to the WebViewController, then is starts in Portrait mode. Only when I turn the iPhone, it starts rotating. Now any idea how to start in UIInterfaceOrientationLandscapeLeft ? ...

Iphone Running Using Performance Tool

Hi all, I run my program using Object Allocations Performance Tool. My program is a really simple program which has a simple AtlasSprite object. Just it ! but I wached the allocations and it's allocations is always increasing in spite of doing nothing ! any idea !? ...

Trying to parse twitter trends

Im trying to parse twitter trends but i keep getting a parser error at "as_of". anyone know why this is happening? EDIT: Here is the code im using NSMutableArray *tweets; tweets = [[NSMutableArray alloc] init]; NSURL *url = [NSURL URLWithString:@"http://search.twitter.com/trends/current.json"]; trendsArray = [[NSMutableArray alloc] i...

viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view controller

I'm struggling to find a good solution to this problem. In a view controller's -viewWillDisappear: method, I need to find a way to determine whether it is because a view controller is being pushed onto the navigation controller's stack, or whether it is because the view controller is disappearing because it has been popped. At the momen...

Mallocdebug Tutorial

I have been using the instruments tool very successfully to fix leaks but when I run the leak tool on the simulator a lot of Malloc problems show up. I have not been able to figure out how to use Mallocdebug from the apple documentation. Anyone know if a gook Mallocdebug tutorial? ...

Avoid the iphone go into sleep mode.

Hi I have made an iphone fitness application. The issue i am unable to resolve here is that, while the application is running, the iphone goes in the sleep mode, and hence the accelerometer and sound turns off. Which i dont want to happen. Is there anyway i can avoid this from happening? If not that, atleast i could increase the time...

Cocoa Touch Data Persistence

Hi there, I'm experimenting with Core Data, plist files, flat files and sqlite. I can't seem to differentiate in terms of efficiency for small data sets. In terms of the differences on the surface ( i.e the API ), i know the difference. But what I'm trying to get a feel for is which persistence model is best for which situation. Thank...

Designing the iPhone interface in a nib or in code?

I've been pondering over this question for a long time already. On the one hand, Interface Builder offers a really easy way to design the interface and wire the elements up with objects in code. On the other hand, in larger projects, Interface Builder becomes a hassle to maintain. Any suggestions would be greatly appreciated. ...