2014/10/15 下午 10:13:15
iphone Programming Glossary: reliableAny idea why this image masking code does not work? http://stackoverflow.com/questions/1133248/any-idea-why-this-image-masking-code-does-not-work Core Graphics is very particular about the format of the bits it uses for masking. I 脎e found that the best and most reliable way to generate an image mask from an arbitrary image is to do this Create a bitmap graphics context that is in an acceptable..
When to use restoreCompletedTransactions for in-app purchases? http://stackoverflow.com/questions/1757467/when-to-use-restorecompletedtransactions-for-in-app-purchases clear to me is how to automatically detect this condition i.e. how to decide when to poll for missing purchases in a reliable way. I don't want to screw this up and risk denying a customer access to functionality they've already paid for. At the..
Are there any examples for how to draw a line chart in Core Plot on the iPhone? http://stackoverflow.com/questions/2934357/are-there-any-examples-for-how-to-draw-a-line-chart-in-core-plot-on-the-iphone
Figure out UIBarButtonItem frame in window? http://stackoverflow.com/questions/2994354/figure-out-uibarbuttonitem-frame-in-window return view convertRect view.bounds toView nil Of course no one wants this when targeting the AppStore. A more unreliable method and also uses undocumented features but will pass Apple's test is to loop through the subviews to look for the corresponding.. after removing all blank items . This assumes the buttons are arranged in increasing order which may not be. A more reliable method is to sort the buttons array in increasing .origin.x value. Of course this still assumes the bar button item must..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version you should avoid relying on the version string as an indication of device or OS capabilities. There is usually a more reliable method of checking whether a particular feature or class is available. For example you can check if UIPopoverController..
How to determine at run-time if app is for development, app store or ad hoc distribution? http://stackoverflow.com/questions/3426467/how-to-determine-at-run-time-if-app-is-for-development-app-store-or-ad-hoc-dist Ad Hoc App Store apps there are a few other things in the entitlements provisioning profile but nothing more reliable that I can think of . Security considerations Neither of these are that difficult to circumvent. For the first method the..
How to properly release an AVCaptureSession http://stackoverflow.com/questions/3741121/how-to-properly-release-an-avcapturesession
How to detect touches in status bar http://stackoverflow.com/questions/3753097/how-to-detect-touches-in-status-bar solutions. I like the general approach of the aforementioned link to subclass UIApplication. But what API can give me reliable info Are there any thoughts help etc... Edit Another thing I don't like about my current solution is that it only works..
Is there any way to use window.onbeforeunload on Mobile Safari for iOS devices? http://stackoverflow.com/questions/4127621/is-there-any-way-to-use-window-onbeforeunload-on-mobile-safari-for-ios-devices I can't find any documentation as to why this event doesn't work in Mobile Safari. Does anyone know if there's a reliable alternative to this function Android's browser appears to support it just fine and the Safari desktop application also supports..
Realtime Face-tracking on Iphone http://stackoverflow.com/questions/4323350/realtime-face-tracking-on-iphone done a research but I've found quite old articles about OpenCV portings. I would like to know if there is any specific reliable fast and possibly free AR solution for overlay in real time an image to the face in iPhone camera Video Stream not simply..
How to Sync iPhone Core Data with web server, and then push to other devices? http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices which applies equally well to core data with some obvious modifications. This provides an overall much more robust and reliable sync strategy but requires more effort to be implemented correctly. EDIT The Objective C framework called ZSync and developed..
iOS - Detecting whether or not device support phone calls? http://stackoverflow.com/questions/5094928/ios-detecting-whether-or-not-device-support-phone-calls Detecting whether or not device support phone calls Is the below code reliable to be used to determine whether a device can support phone calls or not My concern is if apple changes the iphone string..
Looking for experiences on the Apple MFi program registration process [closed] http://stackoverflow.com/questions/5734071/looking-for-experiences-on-the-apple-mfi-program-registration-process it into the market. We would love to implement our device as an iphone external accessory and I'm trying to gather reliable information. Everything looks pretty confusing though. The proper way to introduce an iphone peripheral into the market..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now it should stay the same when the user uninstalls and re installs the app. This requires a bit of effort since the most reliable per device identifier seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always..
http://stackoverflow.com/questions/8172473/nstimer-reliable-alternatives screens or almost anything else really it slows down the timer a little bit making for inaccurate readings. What is a reliable alternative to use My current code is as follows timer NSTimer scheduledTimerWithTimeInterval 1.0 target self selector @selector.. this question NSTimer is not guaranteed to fire exactly on time ever. But you can use an NSTimer in a much more reliable way than you are now. When you use scheduledTimerWithTimeInterval you create an NSTimer which is scheduled in the run loop..
Objective c, Memory management of instance members http://stackoverflow.com/questions/8576593/objective-c-memory-management-of-instance-members c ios memory management share improve this question First you should not look at the retaincount it not really reliable. Second your property is set to retain. So when you assign some thing to it it will increase the reatincount. As will alloc..
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 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..
iOS development on Windows [duplicate] http://stackoverflow.com/questions/9595507/ios-development-on-windows Drive I know there are some SDK such as Marmalade Corona DragonFire... and they give us licenses but are they 100 reliable Would apple give us support if we use one of these SDK Does Apple check if the app was created over a legal OS X copy I..
iOS application integration with pinterest [closed] http://stackoverflow.com/questions/9909511/ios-application-integration-with-pinterest application integration with pinterest closed What is the most reliable way currently to allow pinterest sharing from iOS app Pinterest API is not public yet and only suggested way to share is..
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