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2014/10/15 ¤U¤È 10:12:50
iphone Programming Glossary: preiOS 6 apps - how to deal with iPhone 5 screen size? [duplicate] http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size apps will continue to work in the vertically stretched screen from what I could tell in today's presentation. They will be letterboxed or basically the extra 88 points in height would simply be black... varying heights. If that's not a possibility then the only remaining option is to have two UIs pre iPhone 5 and iPhone 5 . If that sounds ugly then you could go with the default letterboxed model where..
IOS 6 force device orientation to landscape http://stackoverflow.com/questions/12640870/ios-6-force-device-orientation-to-landscape unload them. All but one are in portrait mode. Suppose the 7th VC is in landscape. I need it to be presented in landscape when it gets loaded. Please suggest a way to force the orientation go from portrait.. super viewWillAppear animated UIViewController c UIViewController alloc init autorelease self presentModalViewController c animated NO self dismissModalViewControllerAnimated NO BOOL shouldAutorotateToInterfaceOrientation.. supportedInterfaceOrientations return UIInterfaceOrientationMaskLandscape UIInterfaceOrientation preferredInterfaceOrientationForPresentation return UIInterfaceOrientationLandscapeLeft On load the controller..
Tricks for improving iPhone UITableView scrolling performance? http://stackoverflow.com/questions/1352479/tricks-for-improving-iphone-uitableview-scrolling-performance
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be.. in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with the alpha value. iphone cocoa touch image bitmap share.. a better method as it provides writable data whereas as I understand it the method provided by previous posts and at the bottom of this post provides a read only reference to data . Method 1 Writable..
Any way to pre populate core data? http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data way to pre populate core data ive been creating a list app and backing it with core data. I would like to have.. so that the user doesnt have to start from scratch. Is there any way to do this Any help is appreciated. Thanks in advance. iphone uitableview core data uitableviewcell persist share improve this..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library or method in Objective C instead linker symbols are only generated for each class. If you extend a pre existing class with categories the linker does not know to associate the object code of the core class.. associate the object code of the core class implementation and the category implementation. This prevents objects created in the resulting application from responding to a selector that is defined in the..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework 1024 samples is ie 1 44 s. So we would pack A with 1024 floats from the mic set log2n 10 2^10 1024 precalculate some bobbins setupReal and vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD Now A will contain.. vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD Now A will contain n 2 complex numbers. These represent n 2 frequency bins bin 1 .idealFreq 44Hz ie The lowest frequency we can reliably detect is ONE complete.. The highest frequency we can detect known as the Nyquist frequency is where every pair of points represents a wave ie 512 complete waves within the window ie 512 44Hz or n 2 bin 1 .idealFreq Actually there..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application improve this question Edit As of iOS 3.2 this functionality is built in. If you need to support pre 3.2 you can still use this solution. I created a simple module that extends UILabel and handles loading..
How do I manage building a Lite vs Paid version of an iPhone app? http://stackoverflow.com/questions/549462/how-do-i-manage-building-a-lite-vs-paid-version-of-an-iphone-app class which are each built for their respective target or you can set a build time flag for the pre processor. Select the Target in the Groups and Files list then get info on that target. Go to the build.. in the Groups and Files list then get info on that target. Go to the build tab and search for preprocess . You should see a n item called Preprocessor Macros add LITE to your lite target and in the..
What are all the custom URL schemes supported by the Facebook iPhone app? http://stackoverflow.com/questions/5707722/what-are-all-the-custom-url-schemes-supported-by-the-facebook-iphone-app #BODY# with the text you want to post to. and the window shows up in facebook app with the text pre populated. Also you can use me as an id to post to the signed in users profile. If anyone knows any..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that object... before calling a particular method on it. Apple recommends this method because it is more precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead of checking..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample be any need for me save anything into the 'old' sandbox of my app i.e. as it used to be in the old pre iCloud days . Right now my sandbox is totally empty but I don't know if this is correct. Should I keep.. NSArray arrayWithObject NSMetadataQueryUbiquitousDocumentsScope PREDICATE NSPredicate pred NSPredicate predicateWithFormat @ K @ NSMetadataItemFSNameKey @ text.txt query setPredicate pred FINISHED.. arrayWithObject NSMetadataQueryUbiquitousDocumentsScope PREDICATE NSPredicate pred NSPredicate predicateWithFormat @ K @ NSMetadataItemFSNameKey @ text.txt query setPredicate pred FINISHED NSNotificationCenter..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons to use ARC since the majority of the code in the project I'm working on at the moment was written pre iOS 5.0. I was just wondering does the convenience of not retaining releasing manually and presumably.. pre iOS 5.0. I was just wondering does the convenience of not retaining releasing manually and presumably more reliable code that comes as a result outweigh any 'cost' of using ARC What are your experiences.. your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from using ARC in many projects. __weak pointers do not work correctly on iOS 4 or Mac OS X..
http://stackoverflow.com/questions/982476/iphone-app-without-appstore Can we sell an iPod touch I understand selling an iPhone without a contract is trickier with pre packaged software. ps. Sorry for the anonymous posting the company is a little nervous about our relationship..
iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate] http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size iPad iphone ios iphone 5 share improve this question All apps will continue to work in the vertically stretched screen from what I could tell in today's presentation. They will be letterboxed or basically the extra 88 points in height would simply be black. If you only plan to support iOS 6 then definitely consider.. would be to re imagine the content so that it can accommodate varying heights. If that's not a possibility then the only remaining option is to have two UIs pre iPhone 5 and iPhone 5 . If that sounds ugly then you could go with the default letterboxed model where the extra points pixels just show up black. Edit To enable..
IOS 6 force device orientation to landscape http://stackoverflow.com/questions/12640870/ios-6-force-device-orientation-to-landscape 10 view controllers. I use navigation controller to load unload them. All but one are in portrait mode. Suppose the 7th VC is in landscape. I need it to be presented in landscape when it gets loaded. Please suggest a way to force the orientation go from portrait to landscape in IOS 6 and it will be good to work in IOS.. I was doing it BEFORE IOS 6 void viewWillAppear BOOL animated super viewWillAppear animated UIViewController c UIViewController alloc init autorelease self presentModalViewController c animated NO self dismissModalViewControllerAnimated NO BOOL shouldAutorotateToInterfaceOrientation UIInterfaceOrientation interfaceOrientation.. tried in IOS 6 BOOL shouldAutorotate return YES NSUInteger supportedInterfaceOrientations return UIInterfaceOrientationMaskLandscape UIInterfaceOrientation preferredInterfaceOrientationForPresentation return UIInterfaceOrientationLandscapeLeft On load the controller keeps staying in portrait. After rotating the device..
Tricks for improving iPhone UITableView scrolling performance? http://stackoverflow.com/questions/1352479/tricks-for-improving-iphone-uitableview-scrolling-performance
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone the pixel in question to determine and match its color. Getting the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with the alpha.. way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with the alpha value. iphone cocoa touch image bitmap share improve this question A little more detail... I posted earlier.. at least for my requirements which include modifying pixel data a better method as it provides writable data whereas as I understand it the method provided by previous posts and at the bottom of this post provides a read only reference to data . Method 1 Writable Pixel Information I defined constants #define RGBA 4 #define..
Any way to pre populate core data? http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data way to pre populate core data ive been creating a list app and backing it with core data. I would like to have a default list of say 10 airport items so that the user doesnt.. I would like to have a default list of say 10 airport items so that the user doesnt have to start from scratch. Is there any way to do this Any help is appreciated. Thanks in advance. iphone uitableview core data uitableviewcell persist share improve this question Here's the best way and doesn't require SQL knowledge..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library C does not define linker symbols for each function or method in Objective C instead linker symbols are only generated for each class. If you extend a pre existing class with categories the linker does not know to associate the object code of the core class implementation and the category implementation. This prevents.. existing class with categories the linker does not know to associate the object code of the core class implementation and the category implementation. This prevents objects created in the resulting application from responding to a selector that is defined in the category. And their solution To resolve this issue the static..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework sec. So our time window is whatever the time duration of 1024 samples is ie 1 44 s. So we would pack A with 1024 floats from the mic set log2n 10 2^10 1024 precalculate some bobbins setupReal and vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD Now A will contain n 2 complex numbers. These represent n 2 frequency bins.. log2n 10 2^10 1024 precalculate some bobbins setupReal and vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD Now A will contain n 2 complex numbers. These represent n 2 frequency bins bin 1 .idealFreq 44Hz ie The lowest frequency we can reliably detect is ONE complete wave within that window ie a 44Hz wave. bin 2 .idealFreq.. bin 2 .idealFreq 2 44Hz etc. bin 512 .idealFreq 512 44Hz The highest frequency we can detect known as the Nyquist frequency is where every pair of points represents a wave ie 512 complete waves within the window ie 512 44Hz or n 2 bin 1 .idealFreq Actually there is an extra Bin Bin 0 which is often referred to as 'DC Offset'...
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application extend it to do so. iphone ios cocoa touch fonts share improve this question Edit As of iOS 3.2 this functionality is built in. If you need to support pre 3.2 you can still use this solution. I created a simple module that extends UILabel and handles loading .ttf files. I released it opensource under the Apache license..
How do I manage building a Lite vs Paid version of an iPhone app? http://stackoverflow.com/questions/549462/how-do-i-manage-building-a-lite-vs-paid-version-of-an-iphone-app behaves you can do two things include two versions of the class which are each built for their respective target or you can set a build time flag for the pre processor. Select the Target in the Groups and Files list then get info on that target. Go to the build tab and search for preprocess . You should see a n item.. set a build time flag for the pre processor. Select the Target in the Groups and Files list then get info on that target. Go to the build tab and search for preprocess . You should see a n item called Preprocessor Macros add LITE to your lite target and in the same way add PAID to your paid target. Thein in your source..
What are all the custom URL schemes supported by the Facebook iPhone app? http://stackoverflow.com/questions/5707722/what-are-all-the-custom-url-schemes-supported-by-the-facebook-iphone-app with the id of the profile you want to post to then replace #BODY# with the text you want to post to. and the window shows up in facebook app with the text pre populated. Also you can use me as an id to post to the signed in users profile. If anyone knows any more I am trying to interface with it and would like as much..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that object. For example a view controller is often the delegate of.. delegate methods you still need to check with respondsToSelector before calling a particular method on it. Apple recommends this method because it is more precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead of checking whether a delegate responds to a selector every time..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample a local copy of text.txt automatically. So there shouldn't be any need for me save anything into the 'old' sandbox of my app i.e. as it used to be in the old pre iCloud days . Right now my sandbox is totally empty but I don't know if this is correct. Should I keep another copy of text.txt in there This feels like cluttering.. NSMetadataQuery alloc init _query query SCOPE query setSearchScopes NSArray arrayWithObject NSMetadataQueryUbiquitousDocumentsScope PREDICATE NSPredicate pred NSPredicate predicateWithFormat @ K @ NSMetadataItemFSNameKey @ text.txt query setPredicate pred FINISHED NSNotificationCenter defaultCenter addObserver self selector.. alloc init _query query SCOPE query setSearchScopes NSArray arrayWithObject NSMetadataQueryUbiquitousDocumentsScope PREDICATE NSPredicate pred NSPredicate predicateWithFormat @ K @ NSMetadataItemFSNameKey @ text.txt query setPredicate pred FINISHED NSNotificationCenter defaultCenter addObserver self selector @selector..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons ARC or not to ARC What are the pros and cons I've yet to use ARC since the majority of the code in the project I'm working on at the moment was written pre iOS 5.0. I was just wondering does the convenience of not retaining releasing manually and presumably more reliable code that comes as a result outweigh any 'cost'.. code in the project I'm working on at the moment was written pre iOS 5.0. I was just wondering does the convenience of not retaining releasing manually and presumably more reliable code that comes as a result outweigh any 'cost' of using ARC What are your experiences of ARC and would you recommend it So How much benefit.. This is yet another in a long list of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from using ARC in many projects. __weak pointers do not work correctly on iOS 4 or Mac OS X 10.6 which is a shame but fairly easy to work around. __weak..
http://stackoverflow.com/questions/982476/iphone-app-without-appstore heard of the hassles some people have had getting apps approved. Can we sell an iPod touch I understand selling an iPhone without a contract is trickier with pre packaged software. ps. Sorry for the anonymous posting the company is a little nervous about our relationship with the PDA maker. iphone distribution share improve..
iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate] http://stackoverflow.com/questions/12396545/ios-6-apps-how-to-deal-with-iphone-5-screen-size this question All apps will continue to work in the vertically stretched screen from what I could tell in today's presentation. They will be letterboxed or basically the extra 88 points in height would simply be black. If you only plan to.. that it can accommodate varying heights. If that's not a possibility then the only remaining option is to have two UIs pre iPhone 5 and iPhone 5 . If that sounds ugly then you could go with the default letterboxed model where the extra points..
IOS 6 force device orientation to landscape http://stackoverflow.com/questions/12640870/ios-6-force-device-orientation-to-landscape controller to load unload them. All but one are in portrait mode. Suppose the 7th VC is in landscape. I need it to be presented in landscape when it gets loaded. Please suggest a way to force the orientation go from portrait to landscape in IOS.. BOOL animated super viewWillAppear animated UIViewController c UIViewController alloc init autorelease self presentModalViewController c animated NO self dismissModalViewControllerAnimated NO BOOL shouldAutorotateToInterfaceOrientation.. return YES NSUInteger supportedInterfaceOrientations return UIInterfaceOrientationMaskLandscape UIInterfaceOrientation preferredInterfaceOrientationForPresentation return UIInterfaceOrientationLandscapeLeft On load the controller keeps staying..
Tricks for improving iPhone UITableView scrolling performance? http://stackoverflow.com/questions/1352479/tricks-for-improving-iphone-uitableview-scrolling-performance
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone match its color. Getting the UIImage is the easy part but is there a way to convert the UIImage data into a bitmap representation in which I could extract this information for a given pixel A working code sample would be most appreciated and.. representation in which I could extract this information for a given pixel A working code sample would be most appreciated and note that I am not concerned with the alpha value. iphone cocoa touch image bitmap share improve this question.. modifying pixel data a better method as it provides writable data whereas as I understand it the method provided by previous posts and at the bottom of this post provides a read only reference to data . Method 1 Writable Pixel Information I..
Any way to pre populate core data? http://stackoverflow.com/questions/2230354/any-way-to-pre-populate-core-data way to pre populate core data ive been creating a list app and backing it with core data. I would like to have a default list of say.. of say 10 airport items so that the user doesnt have to start from scratch. Is there any way to do this Any help is appreciated. Thanks in advance. iphone uitableview core data uitableviewcell persist share improve this question Here's the..
Objective-C categories in static library http://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library for each function or method in Objective C instead linker symbols are only generated for each class. If you extend a pre existing class with categories the linker does not know to associate the object code of the core class implementation and.. does not know to associate the object code of the core class implementation and the category implementation. This prevents objects created in the resulting application from responding to a selector that is defined in the category. And their..
Setting the iPhone keyboard language http://stackoverflow.com/questions/330542/setting-the-iphone-keyboard-language the iPhone keyboard language I'd like the iPhone virtual keyboard to appear pre set to a particular language Russian for example when the user taps a UITextField. Is there a way to do this in Cocoa code..
iOS 4 app crashes at startup on iOS 3.1.3: Symbol not found: __NSConcreteStackBlock http://stackoverflow.com/questions/3313786/ios-4-app-crashes-at-startup-on-ios-3-1-3-symbol-not-found-nsconcretestackbl pointed out yesterday that if you use blocks anywhere in your application you'll see a crash similar to this on a pre 4.0 OS while building with the LLVM compiler. To work around this you can specify the linker flag weak lSystem in your Xcode..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework time duration of 1024 samples is ie 1 44 s. So we would pack A with 1024 floats from the mic set log2n 10 2^10 1024 precalculate some bobbins setupReal and vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD Now A will contain n 2 complex numbers... setupReal and vDSP_fft_zrip setupReal A stride log2n FFT_FORWARD Now A will contain n 2 complex numbers. These represent n 2 frequency bins bin 1 .idealFreq 44Hz ie The lowest frequency we can reliably detect is ONE complete wave within.. .idealFreq 512 44Hz The highest frequency we can detect known as the Nyquist frequency is where every pair of points represents a wave ie 512 complete waves within the window ie 512 44Hz or n 2 bin 1 .idealFreq Actually there is an extra Bin Bin..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application touch fonts share improve this question Edit As of iOS 3.2 this functionality is built in. If you need to support pre 3.2 you can still use this solution. I created a simple module that extends UILabel and handles loading .ttf files. I released..
How should I store UIImages within my Core Data database? http://stackoverflow.com/questions/3908910/how-should-i-store-uiimages-within-my-core-data-database within my Core Data database I am developing an application which demands around 100 images or maybe more to be pre inserted into the Core Data database along with other related information. Now I can easily add other data by just writing.. system iphone objective c core data ios share improve this question Storing images within a Core Data database is pretty easy to do. You just need to mark your image attribute as a transformable one and create a subclass of NSValueTransformer... the image save that directly to the database if value isKindOfClass NSData class return value return UIImagePNGRepresentation UIImage value id reverseTransformedValue id value return UIImage imageWithData NSData value For your transformable..
How do I manage building a Lite vs Paid version of an iPhone app? http://stackoverflow.com/questions/549462/how-do-i-manage-building-a-lite-vs-paid-version-of-an-iphone-app two versions of the class which are each built for their respective target or you can set a build time flag for the pre processor. Select the Target in the Groups and Files list then get info on that target. Go to the build tab and search for.. Select the Target in the Groups and Files list then get info on that target. Go to the build tab and search for preprocess . You should see a n item called Preprocessor Macros add LITE to your lite target and in the same way add PAID to..
What are all the custom URL schemes supported by the Facebook iPhone app? http://stackoverflow.com/questions/5707722/what-are-all-the-custom-url-schemes-supported-by-the-facebook-iphone-app post to then replace #BODY# with the text you want to post to. and the window shows up in facebook app with the text pre populated. Also you can use me as an id to post to the signed in users profile. If anyone knows any more I am trying to..
iPhone SDK: what is the difference between loadView and viewDidLoad? http://stackoverflow.com/questions/573958/iphone-sdk-what-is-the-difference-between-loadview-and-viewdidload your infinite recursion. The usual way to build the view programmatically in loadView as demonstrated in Apple's pre Interface Builder examples is more like this UIView view UIView alloc init... ... view addSubview whatever view addSubview..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that object. For example a view.. with respondsToSelector before calling a particular method on it. Apple recommends this method because it is more precise doesn't mess with NSObject and can provide better tool support. Speed Optimizations Instead of checking whether a delegate..
Where would you place your SQLite database file in an iPhone app? http://stackoverflow.com/questions/717108/where-would-you-place-your-sqlite-database-file-in-an-iphone-app would you place your SQLite database file in an iPhone app When I initially create an SQLite database file with pre inserted datasets for my application I would have to place this file somewhere in my Xcode project so that it goes to my..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample So there shouldn't be any need for me save anything into the 'old' sandbox of my app i.e. as it used to be in the old pre iCloud days . Right now my sandbox is totally empty but I don't know if this is correct. Should I keep another copy of text.txt.. SCOPE query setSearchScopes NSArray arrayWithObject NSMetadataQueryUbiquitousDocumentsScope PREDICATE NSPredicate pred NSPredicate predicateWithFormat @ K @ NSMetadataItemFSNameKey @ text.txt query setPredicate pred FINISHED NSNotificationCenter.. setSearchScopes NSArray arrayWithObject NSMetadataQueryUbiquitousDocumentsScope PREDICATE NSPredicate pred NSPredicate predicateWithFormat @ K @ NSMetadataItemFSNameKey @ text.txt query setPredicate pred FINISHED NSNotificationCenter defaultCenter..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons and cons I've yet to use ARC since the majority of the code in the project I'm working on at the moment was written pre iOS 5.0. I was just wondering does the convenience of not retaining releasing manually and presumably more reliable code.. the moment was written pre iOS 5.0. I was just wondering does the convenience of not retaining releasing manually and presumably more reliable code that comes as a result outweigh any 'cost' of using ARC What are your experiences of ARC and would.. of reasons to minimize your use of ObjC . ARC will not work at all on iPhoneOS 3 or Mac OS X 10.5 or earlier. This precludes me from using ARC in many projects. __weak pointers do not work correctly on iOS 4 or Mac OS X 10.6 which is a shame..
http://stackoverflow.com/questions/982476/iphone-app-without-appstore getting apps approved. Can we sell an iPod touch I understand selling an iPhone without a contract is trickier with pre packaged software. ps. Sorry for the anonymous posting the company is a little nervous about our relationship with the PDA..
J2ME VS Android VS iPhone VS Symbian VS Windows CE [closed] http://stackoverflow.com/questions/1414288/j2me-vs-android-vs-iphone-vs-symbian-vs-windows-ce become the standard in the next few years iPhone will remain trendy in coming years but NOT take be the biggest player Pre WebOS will maintain a niche market but not be wildly sucessfull Blackberry will decline but still be around forever. I'd..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone allocating bitmap memory. Releasing color space. CGColorSpaceRelease colorSpace return nil Create the bitmap context. Pre multiplied RGBA 8 bits per component. The source image format will be converted to the format specified here by CGBitmapContextCreate... void pixelData self.size.width self.size.height RGBA_8_BIT bytesPerRow colorSpace kCGImageAlphaPremultipliedLast Make sure we have our context if context free pixelData NSLog @ Context not created Draw the image to.. associated with the bitmap context. pixelData RGBAPixel CGBitmapContextGetData context return pixelData Read Only Data Previous information method 2 Step 1. I declared a type for byte typedef unsigned char byte Step 2. I declared a struct to correspond..
Pre-release checklist before building final version for App Store http://stackoverflow.com/questions/1480044/pre-release-checklist-before-building-final-version-for-app-store release checklist before building final version for App Store Curious what practices people have learned before making..
Pre-load existing data into a Core Data-based iPhone app? http://stackoverflow.com/questions/1767322/pre-load-existing-data-into-a-core-data-based-iphone-app load existing data into a Core Data based iPhone app In a previous project I built an iPhone app for 2.2.x that used SQLite...
Creating a mobile version of a website http://stackoverflow.com/questions/1998916/creating-a-mobile-version-of-a-website mobile web simulators worth a damn I have an iPhone so can test easily on that. If I want to test on Blackberry Palm Pre do I really need a device or are there reliable simulators iphone android mobile phones mobile safari share improve this..
http://stackoverflow.com/questions/2521275/what-is-nsparameterassert sure that someObjectThatMustNotBeNil is really not nil NSParameterAssert someObjectThatMustNotBeNil Okay now do things Pre conditions are a simple way to ensure that methods API are being called correctly by the programmer. The idea is that if..
How to start a project with both outputs iPhone & iPad? http://stackoverflow.com/questions/2657968/how-to-start-a-project-with-both-outputs-iphone-ipad to start a project with both outputs iPhone iPad Using the Pre Release Xcode 3.2.3 I get this as a Startup Project What should I chose do to great a project that can have both iPad and..
Pre-buffering for AVQueuePlayer http://stackoverflow.com/questions/4218090/pre-buffering-for-avqueueplayer buffering for AVQueuePlayer Does anyone know if AVQueuePlayer starts buffering the next AVPlayerItem when the current item..
Augmented Reality for IPhone [closed] http://stackoverflow.com/questions/4622786/augmented-reality-for-iphone Reality for IPhone closed I want to design an Iphone game using Augmented Reality but I dont have Pre experience in this field I dont know from where to start so could any one please suggest some links tutorials pdf anything..
iOS 4.3 changed transformation on UIImagePickerController's camera overlay view http://stackoverflow.com/questions/5336318/ios-4-3-changed-transformation-on-uiimagepickercontrollers-camera-overlay-view the camera overlay of my UIImagePickerController has an added transformation that stretched the content extremely. Pre iOS 4.3 everything shows up correctly. Here is what I do imagePicker UIImagePickerController alloc init imagePicker.delegate..
Custom transition between two UIViews http://stackoverflow.com/questions/5511514/custom-transition-between-two-uiviews of view A imageView.frame self.view.bounds self.view addSubview imageView self.view bringSubviewToFront imageView Pre transform our view s target current d target current CGAffineTransform transform CGAffineTransformIdentity Translate our..
How to invoke iPhone Maps for Directions with Current Location as Start Address http://stackoverflow.com/questions/576768/how-to-invoke-iphone-maps-for-directions-with-current-location-as-start-address to invoke the current location bookmark in place of myLatLong . iphone ios maps share improve this question Pre iOS 6 You need to use Core Location to get the current location but with that lat long pair you can get Maps to route you..
What is the difference between a .xib file and a .storyboard? http://stackoverflow.com/questions/8436324/what-is-the-difference-between-a-xib-file-and-a-storyboard in iOS5 SDK to simplify and better manage screens in your app. You can still use the .xib way of development. Pre storyboard each UIViewController had an associated .xib with it. Storyboard achieves two things .storyboard is essentially..
Pre-load core data database in iOS 5 with UIManagedDocument http://stackoverflow.com/questions/8683892/pre-load-core-data-database-in-ios-5-with-uimanageddocument load core data database in iOS 5 with UIManagedDocument I'm trying to come up with a way that I can pre load data into..
Facebook API dialog page showing error in second time and after that http://stackoverflow.com/questions/9238700/facebook-api-dialog-page-showing-error-in-second-time-and-after-that in the facebook link below here. https developers.facebook.com docs mobile ios build Here it is my code. void buttonPressed id sender facebook Facebook alloc initWithAppId @ YOUR_APP_ID andDelegate self NSUserDefaults defaults NSUserDefaults.. defaults objectForKey @ FBExpirationDateKey if facebook isSessionValid facebook authorize nil else self postWall Pre 4.2 support BOOL application UIApplication application handleOpenURL NSURL url return facebook handleOpenURL url void fbDidLogin..
Facebook Connect Post Dialog Text? http://stackoverflow.com/questions/9655016/facebook-connect-post-dialog-text
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