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2014/10/15 ¤U¤È 10:14:13
iphone Programming Glossary: singletonsDeclaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec thus have to be used exactly how they would be used in C. I've seen them used for implementing static variable based singletons before. Are there other convenient uses I'm missing My take from working with iOS is that ivars have been alost completely..
iPhone sdk pass messages between view controllers http://stackoverflow.com/questions/1698051/iphone-sdk-pass-messages-between-view-controllers practice for an application flow in iPhone development. How do you pass messages between ViewControllers Do you use singletons pass it between views or do you have a main controller for the application that manage the flow Thanks. iphone uiviewcontroller..
http://stackoverflow.com/questions/1937616/why-doesnt-apple-allow-subclassing-of-uinavigationcontroller-and-what-are-my-a all pages in a tab can access instead of every page in the system having to go to the AppDelegate or have a bunch of singletons. Well basically it's a singleton but at least one that is already there and gets the reference passed around automatically...
Objective C defining UIColor constants http://stackoverflow.com/questions/2824187/objective-c-defining-uicolor-constants question A UIColor is not mutable. I usually do this with colors fonts and images. You could easily modify it to use singletons or have a static initializer. @interface UIColor MyProject UIColor colorForSomePurpose @end @implementation UIColor MyProject..
iPhone proper usage of Application Delegate http://stackoverflow.com/questions/338734/iphone-proper-usage-of-application-delegate
An -observeValueForKeyPath:ofObject:change:context: message was received but not handled http://stackoverflow.com/questions/4120539/an-observevalueforkeypathofobjectchangecontext-message-was-received-but-not 'measurement' and 'unit' combination e.g. Temperature °C or Wind Speed mph . MeasurementDescriptors are something like singletons to the extent that there is only one for each unique measurement unit combo. MeasurementPointers are referenced by other..
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 controversial and for good reason &mdash they're really hard to implement properly. Many people still choose to use singletons though. The same can be said about swizzling. You should form your own opinion once you fully understand both the good and..
What are the key concepts for an iPhone Developer to learn? [closed] http://stackoverflow.com/questions/5677655/what-are-the-key-concepts-for-an-iphone-developer-to-learn now is it In the iOS SDK singleton classes often have a special initializer. Instead of the usual Class alloc init singletons often use SingletonClass sharedInstance . shared Instance since the instance is shared across your application. Note that..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers cs193p.stanford.edu downloads 08 NavigationTabBarControllers.pdf Page 16 51 How Not To Share Data Global Variables or singletons This includes your application delegate Direct dependencies make your code less reusable And more difficult to debug test..
Alternative to Singleton in Objective-C for better application design http://stackoverflow.com/questions/5912541/alternative-to-singleton-in-objective-c-for-better-application-design c ios share improve this question This post is likely to be downvote bait but I don't really understand why singletons get no love. They're perfectly valid you just have to understand what they're useful for. In iOS development you have one.. has singleness to it a singleton might well be the way to go. Some developers seem to have a fundamental disgust for singletons but when actually asked why they mumble something about globals and namespaces and aesthetics. Which I guess I can understand..
Alternative to global variables in app delegate http://stackoverflow.com/questions/7635008/alternative-to-global-variables-in-app-delegate storing it globally. But my OOP heart hurts every time I say the word global to myself. Alternatively I have studiet singletons but as far as I have read singletons are used when the developer wishes to create one and only one instance of a certain.. hurts every time I say the word global to myself. Alternatively I have studiet singletons but as far as I have read singletons are used when the developer wishes to create one and only one instance of a certain object. Am I doing it correct or is.. its controller yes it's a bit tough to provide a more specific example without the source Alternatively I have studiet singletons but as far as I have read singletons are used when the developer wishes to create one and only one instance of a certain..
Tap pressure strength detection using CPBPressureTouchGestureRecognizer http://stackoverflow.com/questions/8079580/tap-pressure-strength-detection-using-cpbpressuretouchgesturerecognizer by Matt Gallagher on 20 10 08. Copyright 2009 Matt Gallagher. All rights reserved. http cocoawithlove.com 2008 11 singletons appdelegates and top level.html Permission is given to use this source code file without charge in any project commercial..
What programming skills I need to become an iPhone developer? [closed] http://stackoverflow.com/questions/1043820/what-programming-skills-i-need-to-become-an-iphone-developer layer in Objective C . Learn to use NSArray rather than vector etc. C developers often get confused about how Singletons are used in ObjC. If you understand the full correct Singleton pattern then you need to understand that ObjC generally doesn't.. only instance of the object if you're overriding release stop even if you found the code to do it on Apple's site . Singletons are generally just an instance that happens to be stored in a static and is returned when you asked for the sharedController..
iOS Singletons and Memory Management http://stackoverflow.com/questions/4222069/ios-singletons-and-memory-management Singletons and Memory Management I'm certain that I'm missing some fundamental understanding of iOS memory management and despite..
Is it good practice to use AppDelegate for data manipulation and Handling? http://stackoverflow.com/questions/5155437/is-it-good-practice-to-use-appdelegate-for-data-manipulation-and-handling your DatabaseManager itself be a 'singleton' whereby an instance of it is accessed via a class method on the class. Singletons that work in this way are often frowned upon and usually for good reasons makes testing harder that sort of thing . I tend..
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 aware of the consequences of the pattern we are able to make more informed decisions about whether or not to use it. Singletons are a good example of something that's pretty controversial and for good reason &mdash they're really hard to implement..
What are the key concepts for an iPhone Developer to learn? [closed] http://stackoverflow.com/questions/5677655/what-are-the-key-concepts-for-an-iphone-developer-to-learn that's an oxymoron singleton classes are classes which can only have one instance of them in an application at a time. Singletons are good for factory classes or objects that you won't want two of. The UIDevice class for example is a singleton class...
Alternative to Singleton in Objective-C for better application design http://stackoverflow.com/questions/5912541/alternative-to-singleton-in-objective-c-for-better-application-design C code is using Singleton nowadays. While a lot of people complaining about Singleton e.g. Google Where Have All the Singletons Gone their fellow engineers also use it anyway http code.google.com mobile analytics docs iphone I know we had some answers.. globals and namespaces and aesthetics. Which I guess I can understand if you've really resolved once and for all that Singletons are an anti pattern and to be abhorred in all cases. But you're not thinking anymore at that point. And the framework design..
Correct Singleton Pattern Objective C (iOS)? http://stackoverflow.com/questions/7598820/correct-singleton-pattern-objective-c-ios self sharedInstance retain id copyWithZone NSZone zone return self id autorelease return self oneway void release Singletons can't be released void dealloc super dealloc should never be called id retain return self NSUInteger retainCount return..
What describes the Application Delegate best? How does it fit into the whole concept? http://stackoverflow.com/questions/828827/what-describes-the-application-delegate-best-how-does-it-fit-into-the-whole-con from having random objects talk to the app delegate. Most problems that are solved that way are better solved through Singletons NSNotification or other delegate objects. As to its creation on Mac there is nothing magical about the app delegate. It's..
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