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• iPhone: CPU power to do DSP/Fourier transform/frequency domain?

  - by mahboudz

  I want to analyze MIC audio on an ongoing basis (not just a snipper or prerecorded sample), and display frequency graph and filter out certain aspects of the audio. Is the iPhone powerful enough for that? I suspect the answer is a yes, given the Google and iPhone voice recognition, Shazaam and other music recognition apps, and guitar tuner apps out there. However, I don't know what limitations I'll have to deal with. Anyone play around with this area?

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• What's the right way to utilize ARM SIMD on iPhone for Game vector/matrix operation?

  - by Eonil

  I'm making an vector/matrix library for Game which utilizes SIMD unit on iPhone (3GS or later). How can I do this? I searched about this, now I know several options: Accelerate framework (BLAS+LAPACK+...) from Apple (iPhone OS 4) OpenMAX implementation library from ARM GCC auto-vectorization feature What's the most suitable way for vector/matrix library for game?

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• Technology to write iPhone, BlackBerry and Android phone at the same time?

  - by Michael Pryor

  Is there a strategy or at least best practice to write an app that runs on iPhone, BlackBerry and Android? I'm ignorant about the development environments for BB and Android, but I assume they both support Java apps. I know that the iPhone would require an ObjectiveC portion (as well as a whole new UI). Has anyone done this?

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• Does the iphone sdk support playing an mp4 from rtmp stream?

  - by Jim Geurts

  Does the iphone sdk support playing mp4 files from RTMP streams? I am looking to store the files in CloudFront (in a bucket marked to stream) and would like to have an iphone app be able to play them. Is this possible, or am I better off storing the files as mp3 on CloudFront and not enabling streaming via RTMP?

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• For iPhone OS 4.0, what size should the splash screen, AKA launch image, be?

  - by Andrew Johnson

  I have all my splash screens for iPad and the old iPhone, but the new iPhone will run at 960 x 640 resolution. I can't seem to find the docs on how a launch image should be sized for this. Does anyone know where Apple documents this, what size the splash screen should be, and what it should be named in the bundle?

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• How to ensure/determine that a post is coming from an specific application running on an iPhone/iTou

  - by wgpubs

  Building an iPhone OS application that will allow users to anonymously post information to a web application (in my particular case it will be a Rails based site) ... and I want to ensure that I only accept posts that originate from a specific application running on an iPhone/iTouch. How is this best accomplished? (btw, if your answer applies to Android please feel free to post it here as well as I'm curious to know if the techniques are the same or vary). Thanks

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• How to keep iPhone app out of iPad store?

  - by Eric

  I have an iPhone app that I have started to turn into a universal app, however the process is not complete and I want to release an update to the iPhone version. I know that you can specify device capabilities in the Info.plist file to restrict your app to certain devices, but how can I do this to prevent the unfinished universal version from appearing in the iPad store? Is checking the LSRequiresiPhoneOS BOOL entry (in the Info.plist file) enough? Thanks!

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• is a streaming server necessary to play iphone streaming video??

  - by user171389

  Hi guys, I am a noob with regards to this. I just wanted to know if a streaming server is necessary to play streaming videos on the iphone. e.g. I have a couple of mp4's hosted on a server. Can i play those files directly using MPMoviePlayerController with the http://xxxx.xx.mp4 url?? Are there any commercial solutions for hosting videos for the iphone? Thanks guys Prasad Nair

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• Is there a way to determine if an iPhone / iPad app is installed?

  - by Douglas Macy

  Looking for code that would run in a browser (Safari) to determine if a certain iphone app was installed on a users device (iphone, ipad or ipod touch). The end goal is dynamically display messaging on a site to instruct the user to go install the app.

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• New iPhone Dev policy...how does Apple enforce this? [closed]

  - by milesmeow

  Apple doesn't want anyone to create iPhone apps outside of the Xcode/Objective-C environment. How can they actually enforce this? If the non Xcode IDE, for example Unity, compiles to an iPhone executable, how will Apple know which dev environment you used to create the app? Can they have Xcode compile some sort of signature into the executable that no one knows about?

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• Can mapkit framework provided in iphone be used to create an enterprise application ?

  - by Ameya

  Hi All, Can mapkit framework provided in iphone be used to create an enterprise application, without violating Google privacy and terms. As I am creating enterprise application using enterprise certificate (http://developer.apple.com/programs/iphone/enterprise/) form apple, wanted to know weather I can use makkit framework in my application application for distribution within the enterprise and on itunes app store. Please let me know if there is any additional legal agreement/certificates involved. Thanking you in advance.

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• What is the best way to find customers for iPhone development services?

  - by Alex

  Hi there My company has got iPhone app development expertise but I'm not sure what's the best way to find customers who need to develop iPhone apps. Any suggestions? Alex

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• The application is not installed on iphone because it is not signed.

  - by user291247

  Hello, When I try to install my app. to client's iphone I got this type of error:The application is not installed on iphone because it is not signed.

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• How to localize bundle display name in iPhone app?

  - by Eonil

  How can I localize bundle display name of an iPhone app? The name displayed in iPhone main screen under app icon. I wish a single binary bundle package which will be displayed multilingually.

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• When should we delete the cache data in an iPhone apps?

  - by athanhcong

  Hi all, We often cache image and data to improve our iPhone app's performance. But what strategy do you use to manage the cache data, such as delete or update it? When should we trigger to delete the cache data: when the iPhone apps starts, or quits, or in idle time?

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• Using a single xcode proj for iphone and ipad- can I use same push notification certificate ?

  - by Shweta

  Hi I am looking for extending my current iphone app for iPad-specific UI. For the same Apple has mentioned 3 ways, however I am using the method where a Single XCODE proj is used for having 2 targets- iphone & iPad. There are a few queries: two binaries will be created , which I can price differently for selling. Will they need 2 have different certificates from Apple ? My app has Push notifications. So will i require 2 different certificates ?

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• What is the equivalent of getBoundingClientRect on iPhone Mobile Safari?

  - by newtonapple

  iPhone Mobile Safari seems to be missing element.getBoundingClientRect. What is the equivalent method on iPhone Mobile Safari? This method exists on the iPad.

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• How to enable iPhone auto lock during MPMoviePlayer playback?

  - by obiwahn

  When I play a video with MPMoviePlayerController in my app my iPhone does not auto lock (tested OS 3.0 & 3.1.2). However, the application.idleTimerDisabled = NO, so this setting is not affected by MPMoviePlayerController. How can I get my iPhone to sleep normally (e.g. after 3 min screen dims, then goes dark) when my app is running and playing a video?

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• CSS3 Font Embedding doesn't work at Iphone OS3.0 safari ?

  - by morningglory

  Hello, I tried to embed font at web pages. I can see the font rendering properly at latest non-IE browsers, but when I tried with Iphone Safari Browser, it doesn't render. I want to know whether Iphone Safari supports font embedding. Thanks.

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• How Does iPhone Visual Voicemail Work From An Operator Perspective?

  - by Jasarien

  I'm hoping there are some Cell Phone Operator gurus here today. Would anyone be able to explain how Operators achieve the Visual Voicemail feature on the iPhone (and I assume other newer smart phones)? If a new cell phone operator that distributed SIM cards wanted to utilise the visual voicemail feature on unlocked iPhone's what services need to be in place to be able to support it? Is there an open spec or is it completely proprietary?

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• iPhone team dev, do we all need the same OS?

  - by aruwanwan

  I´m just starting iPhone development with a small team of (really young and naive) colleagues, we all are fairly new to OS X, my question is: If we are planning to develop for every iPod Touch/iPhone out there (not the iPad, I read that thing requires Snow Leopard), what problems will we encounter when sharing code (and making commits) if we all have a combination of Leopard and Snow Leopard systems?

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• iphone doesn't refresh the localized icon after you change language setting !

  - by tony

  Hi, I manage to localized app icon and app name for different languages.I found the icon changes depending on the language setting on the iphone only when the first time when you install the app from xcode. after that, if i change the language setting, the app icon stay the same but only the app name changes to the localized one. Anyone has an idea is there is way of solving the problem? it seems iphone doens't refresh the icon after you change the language setting. Tony

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• Is there a random sampling function for iphone development that can simulate a coin toss?

  - by William

  Is there a random sampling function for the iphone? For example, if you want to flip a coin that returns heads 25% of the times it's flipped, and you want to flip it and see if you get heads this time? I googled for random sampling probability for iphone and couldn't find anything.

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• How can i test microphone related application in iPhone?

  - by Ajay Pandey

  i am developing an application in which two users can do voice chat on iPhone via bluetooth.Now that i have initiated the voice chat in my code,i found that iPhone 3 does not have microphone builtin.Does anybody has any idea on how can i test my application.Because if i use external microphone then i'll not be able to connect it to my system and so not be able to test unless my code is completly runnable..... Need quick help.. Thanks in advance....

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• How to add a rounded rectangle shape (or Box) in iphone interface?

  - by priya

  I want to add a rounded rectangle shape in iphone interface but the iphone library doesn't have that object. How do i do it?

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