iphone

iPad allow other applications to import documents to my application

I'm building an iPad app that allows users to save files in it and I want users to be able to open and import documents from other applications to my application. For example, I know that if you received an email and you want to save the attachment to my application, you're able to click on it and "Open with..." and choose the applicatio...

How would one use Cocos2d to create a game like this.

http://itunes.apple.com/us/app/angry-birds/id343200656?mt=8&ign-mpt=uo%3D6 So I am getting started with this all game dev thing on iphone and I decided that I will start playing with Cocos2d as my starting engine. Now just so i have a goal in mind, I picked angry birds as my initial target of what sort of game play would I like to...

is <CLLocationManagerDelegate> necessary to get the users location?

the file that I need the users information in already has a -flipsideViewControllerDelegate-, so Is there a way that I can get the users location coordinates without using the CLLocationManagerDelegate thing? ...

Custom UITableViewCell doesn't update its subviews immediately, why?

I have a custom UITableViewCell with, among other things, a label and an imageView. If the table view is the visible view and it has a cell on it, if I programmatically update the label's text and the imageView's image and log when I do it, it takes about 4 seconds AFTER I see the notification in the logs for the label and image to upda...

Find distance between two points using MKMapKit

Hi, I'm attempting to find the euclidean distance in meters between two points on an MKMapView using iPhone OS 3.2. The problem is that I have these coordinates in terms of latitude and longitude, which, mathematically provides me enough data to find the distance, but it's going to take some tricky trigonometry. Is there any simpler sol...

iPhone Multithreaded Search

I'm sort of new to any sort of multithreading and simply can't seem to get a simple search method working on a background thread properly. Everything seems to be in order with an NSAutoreleasePool and the UI being updated on the main thread. The app doesn't crash and does perform a search in the background but the search results yield th...

Any examples/tutorials on using Google GData API - Youtube on iphone?

Hi, I need to list a specific users uploaded videos (YouTube) in a UITableView. I've downloaded the GData source and example projects (not iphone specific) but I can't seem to get it to work. Does anybody know of any good (or any at all ;)) tutorials out there? Best regards, Magnus ...

How do I reference a pointer from a different class?

First off, I despise singletons with a passion. Though I should probably be trying to use one, I just don't want to. I want to create a data class (that is instantiated only once by a view controller on loading), and then using a different class, message the crap out of that data instance until it is brimming with so much data, it smiles...

Rename files in XCode

is it possible to rename/refactor a class file and have it rename the actual file on disk? if so, how can i do this? ...

Accordion table cell - How to dynamically expand/contract uitableviewcell?

Hi, I am trying create an accordion type of uitableviewcell that, when the user selects the cell, it expands to display a detailed info view inline similar to how the digg app works. I initially tried replacing the current tablecell with a customcell in cellForRowAtIndex however the animation looks a bit choppy as you can see the cell be...

Is it possible to search files of particular extension in the entire device ?

In my application, i am trying to find all files of particular extension (like .pdf, .txt, etc) that are stored in the device (either downloaded or transferred from system) and want to list them in table View. Is it possible to do so and if it is then can i associate file of specific extension to get it open in supporting application (an...

Core Data and Relationships

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 ...

iPhone: Tab Bar App rotate to landscape and remove tabs

I have a tab bar app that I would only like to allow rotating to landscape in one of the tabs. Currently, it does not rotate. Is there a configuration option that allows it to change to landscape when I rotate the display? ...

Preferred place to store username

I am dealing with a single username and password in an App, I'm storing the password in the keychain for security but where best to store the username? In NSUserDefaults, CFPreferences or is there a way to retrieve it out of the keychain along with the password. Later on there might be two entries in the keychain so I think this might ...

What is the best way to create continuously looping background in iPhone SDK ?

What is the best way to create a continuously looping background using iPhone SDK so that it seems the foreground object is in perpetual motion ? I have a background image which I want to move continuously at a given speed from right to left and seamlessly start displaying the beginning of the image when its end is reached. What is the ...

iPhone Datepicker plays 'tick' sound

Hey guys, Does any of you know what event I can tap into on the DatePicker when the wheel moves. I want to play a sound (got sound code) as the wheel spin. Just like the timer set picker in Apple's clock app. All that is there is a single event for ValueChanges which only fires once, at the end of a wheel spin. Thanks in advance ...

Call a function from another Class - Obj C

I'm trying to figure out how I can call a function from another one of my classes. I'm using a RootViewController to setup one of my views as lets say AnotherViewController So in my AnotherViewController im going to add in on the .h file @class RootViewController And in the .m file im going to import the View #import "RootViewContro...

Is drawRect: called on multiple threads when using a CATiledlayer?

I know that drawLayer: and drawlayer:inContext: are called on multiple threads when using a CATiledlayer, but what about drawRect:? Apple's PhotoScroller example code uses drawRect: to get its images from disk, and it has no special code for handling threads. I am trying to determine whether my model for a CATiledLayer must be thread-s...

What is the 'standard' content of .gitignore for an iPhone (Xcode) project?

What is considered the 'standard' content of .gitignore file for an iPhone (Xcode) project? PS: not sure if this needs to be a CW. ...

iphone: view index

I have a view between other views, the order may vary. For example: viewA on top of viewB, on top of viewC, or in another order. Suppose I have viewA, viewB, viewC, viewD and viewE A is on the top and E on the bottom. I need to replace viewC with viewZ, but I need to insert viewZ in the same index of viewC. How do I know, before rem...