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2014/10/15 ¤U¤È 10:09:57
iphone Programming Glossary: happensHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk in projects so you might run into naming conflicts with other projects like ShareKit. If this happens you'll have to rename one of the pairs of Reachability.h and Reachability.m files to something else..
IOS 6 force device orientation to landscape http://stackoverflow.com/questions/12640870/ios-6-force-device-orientation-to-landscape have specified in supportedInterfaceOrientations only UIInterfaceOrientationMaskLandscape . Why it happens Also NONE of above 3 methods are getting called. Some useful data In my plist file I have specified..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application manage the Core Data stack indeed doing so is likely to be counter productive. The Core Data stack happens to be created by the application delegate. Importantly however as all the examples show the stack principally..
“wait_fences: failed to receive reply: 10004003”? http://stackoverflow.com/questions/1371346/wait-fences-failed-to-receive-reply-10004003 on it on Apple's site or any solutions here or on Google. Strangely the opposite situation happens if I put the line in viewDidAppear instead of viewWillAppear that is instead of printing the error only..
Build Error - missing required architecture i386 in file http://stackoverflow.com/questions/1456185/build-error-missing-required-architecture-i386-in-file since this was not happening earlier. iphone cocoa touch share improve this question This happens when you add a framework to your project and unintentionally copy the framework into your project directory...
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript in Javascript function store event document.location myapp myfunction param1 param2 But nothing happens. iphone cocoa touch uiwebview share improve this question The standard workaround for UIWebView..
http://stackoverflow.com/questions/2108503/code-sign-error-the-identity-iphone-developer-doesnt-match-any-valid-certifi certificate private key pair in the default keychain iphone share improve this question This happens if you forgot to change your build settings to Simulator . Unless you want to build to a device in which..
What is a “delegate” in Objective C's iPhone development? [duplicate] http://stackoverflow.com/questions/2534094/what-is-a-delegate-in-objective-cs-iphone-development See this discussion A delegate allows one object to send messages to another object when an event happens. For example if you're downloading data from a web site asynchronously using the NSURLConnection class..
What is the best way to enter numeric values with decimal points? http://stackoverflow.com/questions/276382/what-is-the-best-way-to-enter-numeric-values-with-decimal-points final result Thanks iphone cocoa touch share improve this question A more elegant solution happens to also be the simplest. You don't need a decimal separator key Why Because you can simply infer it..
iphone webkit css animations cause flicker http://stackoverflow.com/questions/2946748/iphone-webkit-css-animations-cause-flicker accessories up and down. You can see that when you let go they snap into place. Just as that snap happens there's a flicker that occurs. The only webkit animations I'm using are ' webkit transition' 'none'..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework 1 .idealFreq Actually there is an extra Bin Bin 0 which is often referred to as 'DC Offset'. It so happens that Bin 0 and Bin n 2 will always have complex component 0 so A 0 .realp is used to store Bin 0 and..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events ^ self backgroundHandler if backgroundAccepted NSLog @ VOIP backgrounding accepted Now the magic happens I don't even use VoIP Sockets. But this 10 Minutes callback provides a nice side effect After 10 Minutes.. the expirationHandler from the long running task. Just try it out. Use your Console to see what happens... Have Fun Update 2 Sometimes simplifying things helps. My new approach is this one void applicationDidEnterBackground..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now step you setNeedsDisplay wrong 5 until all the work is done 6 Of course when you do that all that happens is that drawRect is run once only after step 6. What you want is for the ^ £@ @ view to be refreshed..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive profile for the project . Chances are the iOS App Store Package .ipa option may be disabled. This happens when your build produces more than a single target say an app and a library. All of them end up in the..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk
IOS 6 force device orientation to landscape http://stackoverflow.com/questions/12640870/ios-6-force-device-orientation-to-landscape to portrait the orientation goes to portrait although I have specified in supportedInterfaceOrientations only UIInterfaceOrientationMaskLandscape . Why it happens Also NONE of above 3 methods are getting called. Some useful data In my plist file I have specified 3 orientations all but upside down. The project was started..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application Summary There is no need to create a singleton to manage the Core Data stack indeed doing so is likely to be counter productive. The Core Data stack happens to be created by the application delegate. Importantly however as all the examples show the stack principally the managed object context is not retrieved directly..
“wait_fences: failed to receive reply: 10004003”? http://stackoverflow.com/questions/1371346/wait-fences-failed-to-receive-reply-10004003 Does anyone know how to fix this I can't find any documentation on it on Apple's site or any solutions here or on Google. Strangely the opposite situation happens if I put the line in viewDidAppear instead of viewWillAppear that is instead of printing the error only the first time the keyboard is shown and never again the..
Build Error - missing required architecture i386 in file http://stackoverflow.com/questions/1456185/build-error-missing-required-architecture-i386-in-file goes the same for all the frameworks in my app. It's very weird since this was not happening earlier. iphone cocoa touch share improve this question This happens when you add a framework to your project and unintentionally copy the framework into your project directory. The fix is to check your project directory where you..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript YES to make sure regular navigation works as expected. And in Javascript function store event document.location myapp myfunction param1 param2 But nothing happens. iphone cocoa touch uiwebview share improve this question The standard workaround for UIWebView is to set a UIWebViewDelegate and implement the method webView..
http://stackoverflow.com/questions/2108503/code-sign-error-the-identity-iphone-developer-doesnt-match-any-valid-certifi The identity 'iPhone Developer' doesn't match any valid certificate private key pair in the default keychain iphone share improve this question This happens if you forgot to change your build settings to Simulator . Unless you want to build to a device in which case you should see the other answers. share improve this..
What is a “delegate” in Objective C's iPhone development? [duplicate] http://stackoverflow.com/questions/2534094/what-is-a-delegate-in-objective-cs-iphone-development iphone ios objective c share improve this question See this discussion A delegate allows one object to send messages to another object when an event happens. For example if you're downloading data from a web site asynchronously using the NSURLConnection class . NSURLConnection has three common delegates void connection..
What is the best way to enter numeric values with decimal points? http://stackoverflow.com/questions/276382/what-is-the-best-way-to-enter-numeric-values-with-decimal-points numeric input from being entered without having to regex the final result Thanks iphone cocoa touch share improve this question A more elegant solution happens to also be the simplest. You don't need a decimal separator key Why Because you can simply infer it from the user's input. For instance in the US locale when you..
iphone webkit css animations cause flicker http://stackoverflow.com/questions/2946748/iphone-webkit-css-animations-cause-flicker game. The guns will scroll in. You can scroll the purse and accessories up and down. You can see that when you let go they snap into place. Just as that snap happens there's a flicker that occurs. The only webkit animations I'm using are ' webkit transition' 'none' ' webkit transition' 'all 0.2s ease out' ' webkit transform'..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework 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'. It so happens that Bin 0 and Bin n 2 will always have complex component 0 so A 0 .realp is used to store Bin 0 and A 0 .imagp is used to store Bin n 2 And the magnitude of each..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events sharedApplication setKeepAliveTimeout 600 handler ^ self backgroundHandler if backgroundAccepted NSLog @ VOIP backgrounding accepted Now the magic happens I don't even use VoIP Sockets. But this 10 Minutes callback provides a nice side effect After 10 Minutes sometimes earlier I discovered that my timers and previous.. bgTask and you're done. Maybe one can do sth. like this inside the expirationHandler from the long running task. Just try it out. Use your Console to see what happens... Have Fun Update 2 Sometimes simplifying things helps. My new approach is this one void applicationDidEnterBackground UIApplication application UIApplication..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now 3 creates a more and more complicated artwork and 4 at each step you setNeedsDisplay wrong 5 until all the work is done 6 Of course when you do that all that happens is that drawRect is run once only after step 6. What you want is for the ^ £@ @ view to be refreshed at point 5. This can lead to you smashing your ipops on the..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive which should match your ad hoc app store provisioning profile for the project . Chances are the iOS App Store Package .ipa option may be disabled. This happens when your build produces more than a single target say an app and a library. All of them end up in the build products folder and Xcode gets naïvely confused about..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk of the most used classes in projects so you might run into naming conflicts with other projects like ShareKit. If this happens you'll have to rename one of the pairs of Reachability.h and Reachability.m files to something else to resolve the issue...
IOS 6 force device orientation to landscape http://stackoverflow.com/questions/12640870/ios-6-force-device-orientation-to-landscape portrait although I have specified in supportedInterfaceOrientations only UIInterfaceOrientationMaskLandscape . Why it happens Also NONE of above 3 methods are getting called. Some useful data In my plist file I have specified 3 orientations all but..
Where to place the “Core Data Stack” in a Cocoa/Cocoa Touch application http://stackoverflow.com/questions/1267520/where-to-place-the-core-data-stack-in-a-cocoa-cocoa-touch-application a singleton to manage the Core Data stack indeed doing so is likely to be counter productive. The Core Data stack happens to be created by the application delegate. Importantly however as all the examples show the stack principally the managed..
“wait_fences: failed to receive reply: 10004003”? http://stackoverflow.com/questions/1371346/wait-fences-failed-to-receive-reply-10004003 find any documentation on it on Apple's site or any solutions here or on Google. Strangely the opposite situation happens if I put the line in viewDidAppear instead of viewWillAppear that is instead of printing the error only the first time the..
Build Error - missing required architecture i386 in file http://stackoverflow.com/questions/1456185/build-error-missing-required-architecture-i386-in-file my app. It's very weird since this was not happening earlier. iphone cocoa touch share improve this question This happens when you add a framework to your project and unintentionally copy the framework into your project directory. The fix is..
Get notified when UITableView has finished asking for data? http://stackoverflow.com/questions/1483581/get-notified-when-uitableview-has-finished-asking-for-data to already have sufficient data in it or else the scrollRectToVisible animated method call does nothing which is what happens if you place the call on its own in any of viewDidLoad viewWillAppear or viewDidAppear . Thanks in advance for your assistance..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript works as expected. And in Javascript function store event document.location myapp myfunction param1 param2 But nothing happens. iphone cocoa touch uiwebview share improve this question The standard workaround for UIWebView is to set a UIWebViewDelegate..
http://stackoverflow.com/questions/2108503/code-sign-error-the-identity-iphone-developer-doesnt-match-any-valid-certifi match any valid certificate private key pair in the default keychain iphone share improve this question This happens if you forgot to change your build settings to Simulator . Unless you want to build to a device in which case you should..
What is a “delegate” in Objective C's iPhone development? [duplicate] http://stackoverflow.com/questions/2534094/what-is-a-delegate-in-objective-cs-iphone-development this question See this discussion A delegate allows one object to send messages to another object when an event happens. For example if you're downloading data from a web site asynchronously using the NSURLConnection class . NSURLConnection..
What is the best way to enter numeric values with decimal points? http://stackoverflow.com/questions/276382/what-is-the-best-way-to-enter-numeric-values-with-decimal-points having to regex the final result Thanks iphone cocoa touch share improve this question A more elegant solution happens to also be the simplest. You don't need a decimal separator key Why Because you can simply infer it from the user's input...
iphone webkit css animations cause flicker http://stackoverflow.com/questions/2946748/iphone-webkit-css-animations-cause-flicker scroll the purse and accessories up and down. You can see that when you let go they snap into place. Just as that snap happens there's a flicker that occurs. The only webkit animations I'm using are ' webkit transition' 'none' ' webkit transition'..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework 512 44Hz or n 2 bin 1 .idealFreq Actually there is an extra Bin Bin 0 which is often referred to as 'DC Offset'. It so happens that Bin 0 and Bin n 2 will always have complex component 0 so A 0 .realp is used to store Bin 0 and A 0 .imagp is used..
Behaviour for significant change location API when terminated/suspended? http://stackoverflow.com/questions/3421242/behaviour-for-significant-change-location-api-when-terminated-suspended location processing for a limited time . So I am fine with this bit. The previous paragraph only talks about what happens when the app is terminated it doesn't suggest what you do when the application is suspended. The documentation for didFinishLaunchingWithOptions..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events 600 handler ^ self backgroundHandler if backgroundAccepted NSLog @ VOIP backgrounding accepted Now the magic happens I don't even use VoIP Sockets. But this 10 Minutes callback provides a nice side effect After 10 Minutes sometimes earlier.. sth. like this inside the expirationHandler from the long running task. Just try it out. Use your Console to see what happens... Have Fun Update 2 Sometimes simplifying things helps. My new approach is this one void applicationDidEnterBackground..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now and 4 at each step you setNeedsDisplay wrong 5 until all the work is done 6 Of course when you do that all that happens is that drawRect is run once only after step 6. What you want is for the ^ £@ @ view to be refreshed at point 5. This can..
Xcode 4: create IPA file instead of .xcarchive http://stackoverflow.com/questions/5265292/xcode-4-create-ipa-file-instead-of-xcarchive store provisioning profile for the project . Chances are the iOS App Store Package .ipa option may be disabled. This happens when your build produces more than a single target say an app and a library. All of them end up in the build products folder..
What are the Dangers of Method Swizzling in Objective C? http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c should not be done. You are changing the arguments passed to the original method's implementation. This is where it happens self my_setFrame frame What line does is objc_msgSend self @selector my_setFrame frame Which will use the runtime to look.. setFrame with @selector my_controlSetFrame NSView swizzle @selector setFrame with @selector my_viewSetFrame What happens when the method on NSButton is swizzled Well most swizzling will ensure that it's not replacing the implementation of setFrame..
How to compare two NSDates: Which is more recent? http://stackoverflow.com/questions/5965044/how-to-compare-two-nsdates-which-is-more-recent 2011 05 11 13 20 48 0000 2011 05 11 14 20 54.415 NotePage 6918 207 ...db is more up to date. or this one which happens to be correct 2011 05 11 14 20 25.097 NotePage 6903 207 dB...lastModified 2011 05 11 13 18 25 0000 2011 05 11 14 20 25.098..
Why am I having to manually set my view's frame in viewDidLoad? http://stackoverflow.com/questions/6757018/why-am-i-having-to-manually-set-my-views-frame-in-viewdidload or status bar which itself has a height that can change e.g. when you're on a phone call . It helps to understand what happens when a view controller's view is loaded and displayed Something accesses your view controller's view property for the first..
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