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• how to set/get pixel on a texture in OpenGL ES on iPhone?

  - by unknownthreat

  I am trying to Google for what I've mentioned in the title, but somehow I couldn't find it. This should not be that hard, should it? What I am looking for is a way to gain access to an OpenGL ES texture on iPhone, and a way to get/set pixel with it. What are the OpenGL ES functions I am looking for?

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• What's the best way to skin my iPhone app (similar to how the Notes app is skinned)?

  - by Dr Dork

  If you look at the Notes app on the iPad, you can see it uses all native iPhone controls, but they're "skinned" to look like a pad of paper. What's the best way to implement something similar to that? Could I use interface builder and simply change the background image for each of the controls, including the TableViews? Thanks in advance for all your help! I'm going to continue researching this question right now.

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• Is the iPhone/iPad delete "badge" available via the SDK?

  - by skantner

  I am creating an app with thumbnail views of my content. I would like to put a "delete" badge in the upper left corner of each thumbnail like the one you see either when deleting apps from the iphone/ipad home screen. It is typically a black circle with an 'X' inside. Is this a badge or image file made available somehow through the SDK? //Scott

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• How to store data using core data in iphone?

  - by Warrior

  I am new to iphone development.I want to show a form a and store the contents in to a core data database after clicking the submit button.I have created a form.xcdatamodel and class events.h and events.m with reference to the apple docs.In some Sample codes the values are stored statically in the delegate class and they use core data delegate methods. But in my case the form view come after passing 2 views. I want to store the data entered here .How can i achieve it.Please help me out.Thanks.

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• How to play songs programmetically in iPhone from server ?

  - by hib

  Hello all, In my current application I want to show a songs list in table view which is pretty easy but on selection of one of the songs it should be played in any existing audio player in iPhone . How can I do so . Provide me if anyone have good tutorial or example link

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• iPhone - is there any way to look at the core data store for a live app?

  - by jtrim

  I've got a live app on the app store that's producing some strange results when the user upgrades versions that I can't reproduce in my dev environment. Does anyone know of a way to inspect the core data store of a live iPhone app?

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• iPhone Safari Web Application not using cache at all?

  - by Liuyi Sun

  Hi, guys, I've been developing an iphone web application for a while, and encountered a weird problem: when open the web app in safari(with safari chrome, not starting it from home screen), safari can generate proper "If-Not-Modified-Since" and "If-None-Matches", so the server simply gives 304 Not Modified to speed up the process. however, when starting the app from home screen, safari seems to forget these two headers, and server always replies with 200 OK... any ideas for this?

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• iPhone development: How to create colored or translucent background for UIActionSheet?

  - by Boon

  When you try deleting a note in iPhone's Notes application, an UIActionSheet pops up. The sheet is translucent (but not black translucent). How is that achieved? Is it possible to make the background of UIActionSheet a certain color?

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• Can I access the keychain on the iPhone with MonoTouch?

  - by TrolleFar

  Hello, I have recently started to develop applications for iPhone with MonoTouch and have to store user names and passwords on the phone. I want to use the keychain for this but can't find anything in the MonoTouch documentation about it. Is it possible to use it directly with MonoTouch or will I have to write some C++/C/Objective-C code that uses the keychain and export it to MonoTouch?

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• Is there a way to find the state the user is in with the iphone's MapKit?

  - by rayjohannessen

  I am using the MapKit for the iPhone and have it setup to get the user's location and display it on the view. But I need to know which state they're in so I know what data to load and display to the user. Is there any way to get that sort of info?

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• No Audio Output Device is installed

  - by mabho

  Hi, this is an intermitent problem in my Sony Vaio model PCG-5K1L. I keep on getting a "No Audio Output Device is installed" when hovering my loudspeaker icon in Windows Vista. I have tried System Device Manager Sound Realtek High Definition Album Update Driver Software. The update process went through, but nothing happens. Still Vista does not seem to recognize my audio software. The strange part is that out of nothing my sound card can resume working to stop again hours later... If someone has any clues to solve this, please, help. Thanks a lot.

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• How to rotate keyboard of UITextField when device orientation is changing.

  - by Vikas

  When keyboard become visible for UITextField the orientation was landScapeLeft but if we change the orientation to landScapeRight then keyboard is coming from upside. How to rotate the keyboard also when the orientation changes.

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• how to get data from the UIAddressbook in iphone?

  - by MD

  I want to import data frome the iphone address book to my applciation. Can you give me any reference sample code?

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• How do I draw lines and rectangles on the iPhone?

  - by Rajendra Bhole

  I would like to draw a line and rectangle in my iPhone application. How would I go about doing this? Are there any tutorials I should read?

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

  - by user369836

  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

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• Is developing iPhone apps in any language other than Objective-C ever a truly viable solution?

  - by David Foster

  I hear all this stuff about crazy ways to build iPhone apps using Ruby or C# under .NET or the like. Even stuff about developing apps on Windows using Java, or auto-generated apps using Flash CS5 or something. Now, I've never really spent any time at all investigating these claims—I just brushed them off as clumsy or cumbersome or down-right claptrap—but I'm a proud Objective-C programmer who's perhaps a little worried as to whether there's any truth in all of this?

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• Rsync to a WebDAV filesystem on OSX copies all files regardless of being changed or not.

  - by MarceloR

  I am trying to sync my (Mac) desktop, with an iPad and an iPhone. OSX mounts WebDAV as a native filesystem, but syncing results in all files in my directory structure being copied again. This occurs when I use rsync -a or even a simple rsync -r. Various iPhone OS apps use the WebDAV server in iPhone OSX to transfer files. This occurs on several apps I use including GoodReader.

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• How to maintain logged in status with web server in an iPhone app?

  - by elioty

  Simply, I would like to have an iPhone app that logs in to a web server with inputted username and password values and then maintains this login, so that the user can POST data to the server. Is this just an issue of using cookies? If so, how do you perform a check to verify the user is logged in? Thanks.

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• "SIOCSIFADDR: No such device" after restoring backup

  - by Paul Tomblin

  I bought some new hardware, and tried to restore my backup on it. When I boot, I don't get a network connection. If I type "ifup eth0" on the command line, I see the messages: SIOCSIFADDR: No such device eth0: No such device lspci shows an ethernet controller (Intel 82546GB). ifconfig does not show any controller except loopback. I tried installing bare Debian on the machine and the network worked then, but now I want to make it like my old machine was. Googling this problem only seems to find people having this problem in VMs. I'm not in a VM.

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• Are the iPhone media playback controls available to other applications?

  - by Comma

  what is the transparent modal window that has the playback controls in the music player (iPod) of the iPhone? how can i use it in my app?

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• Preventing apps to access info from wifi device?

  - by heaosax

  Browsers like Chrome and Firefox can use my wifi device to get information about the surrounded APs and pin point my physical location using Google Location Services, I know these browser always ask for permissions to do this, and that these features can also be "turned off". But I was wondering if there's a better way to prevent ANY application to access this information from my wifi device. I don't like anyone on the internet knowing where I live, and I am worried some software could do the same as these browsers but without asking for permissions. I am using Ubuntu 10.04.

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• [Iphone]How to get the length of one text string under one specific font with no word wrap.

  - by semix

  Hi I am new as a Iphone developer. I am wondering how to get the length of a given string under one specific UIFont, WITHOUT line word wrap. say I have a NSString* lpText = @"a unknon lenght string ..... string" //could be very long and I am using the "Times New Rome" font for rendering... Any idea? Thanks in advance.

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• iphone, need to put many text boxes on the view, how to scroll down to view more content?

  - by Siegfried

  iphone, need to put many text boxes on the view, how to scroll down to view more content? I actually put buttons and labels on the ScrollView, but the scrolling doesn't work. Do I need to write any code for that, any example? Thanks.

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• HTML5 Webapp as regular icon or app on iPhone and Andorid.

  - by holografix

  Hi all, Sorry if this is a noob question, I searched quite a bit and couldn't find an answer. I'm developing a html5 app that relies on sqlite for local storage. I'd like for it to appear as an app icon on the iPhone/Android screen, what's the best way to do this? Ie can I write some sort of "wrapper" app to achieve it? Thanks!

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• For the iPhone, can you program for different languages?

  - by chiemekailo

  For the iPhone, is it possible to program applications to translate words from a base language to any of several languages of various users. If so, how?

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