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2014/10/15 ¤U¤È 10:05:06
iphone Programming Glossary: circumstancesUIView's frame, bounds, center, origin, when to use what? http://stackoverflow.com/questions/1071112/uiviews-frame-bounds-center-origin-when-to-use-what
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs it's subviews. Essentially it should have the frame of what you would assume the UIScrollView would have under normal circumstances. Place the UIScrollView in the center of the ClipView . Make sure the ClipView 's clipsToBounds is set to YES if its width..
declaring global variables in iPhone project http://stackoverflow.com/questions/1249131/declaring-global-variables-in-iphone-project every file in your project. There are pros and cons of each approach. I've used all three at varying times in varying circumstances. I would say the singleton approach is probably the most proper since it would be most flexible for initialization access..
What happens if I don't retain IBOutlet? http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet but does this make a different since the nib owns the field Will the field go away without the retain and under what circumstances The code in the first case works was wondering whether this is an issue or not in terms of memory management. iphone retain..
How to handle different orientations in iOS 6 http://stackoverflow.com/questions/15947349/how-to-handle-different-orientations-in-ios-6 a pain in the ass..and I still can't understand it completely for some reason it behaves differently under certain circumstances. I have the following simple hierarchy of views in my test app What I'm trying to achieve is to keep blue controller in..
Measuring velocity via iPhone SDK http://stackoverflow.com/questions/1994018/measuring-velocity-via-iphone-sdk API. It works OK but the update cycle is far from ideal for a real time measurement of velocity. Depending on circumstances it can take up to 4 5 seconds sometimes to update. Cruising at a given speed tends to work OK but accel decel tend to lag..
http://stackoverflow.com/questions/2247647/offset-on-uiwindow-addsubview on UIWindow addSubview I've got a UITabBar based application that works just fine. Under certain circumstances I am showing a different UIViewController instead though. Now what bugs me is that that I have to adjust the frame for the..
iPhone CATransition adds a fade to the start and end of any animation? http://stackoverflow.com/questions/2375850/iphone-catransition-adds-a-fade-to-the-start-and-end-of-any-animation but rather have a shared background view that's under those views at all times. Note that this will not work in all circumstances grouped UITableView s for example are always completely opaque. As I side note I assume that you aren't build a navigation..
Suppressing line specific XCode compiler warnings http://stackoverflow.com/questions/2853184/suppressing-line-specific-xcode-compiler-warnings warnings. I would also rather not do something like suppress specific warnings by file . There have been a few other circumstances where I wanted to flag a specific line as okay even though the compiler generates a warning. I essentially want to let my..
iPhone — is initWithCoder an exception to the usual designated initializer design pattern? http://stackoverflow.com/questions/2944823/iphone-is-initwithcoder-an-exception-to-the-usual-designated-initializer-desi through in order to ensure that each instances is completely initialized regardless of where the data came from or the circumstances of the initialization. That should never be taken to mean that a class can only have one initializer method. Edit01 From..
iPhone Landscape FAQ and Solutions http://stackoverflow.com/questions/2953351/iphone-landscape-faq-and-solutions this issue and finally found a solution that is not only a partial solution but should work under all these circumstances. It is my intend with this CW post to provide sort of a FAQ for others having issues with UIViewControllers in Landscape..
UIScrollView indicator always show? http://stackoverflow.com/questions/3290813/uiscrollview-indicator-always-show You can't. This is part of the interface guidelines. What you can do alternatively is flash them in some sensible circumstances the view becomes visible moves onto the screen or similar using the void flashScrollIndicators method. share improve this..
Multiline UILabel with adjustsFontSizeToFitWidth http://stackoverflow.com/questions/4382976/multiline-uilabel-with-adjustsfontsizetofitwidth
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion kind of game how fast to react on events ... Now you will have a solution which is working pretty good under certain circumstances and within a short period of time. But than after a few seconds you will run into trouble because your object is drifting..
http://stackoverflow.com/questions/5360846/suspend-the-application Never quit an iOS application programmatically because people tend to interpret this as a crash. However if external circumstances prevent your application from functioning as intended you need to tell your users about the situation and explain what they..
http://stackoverflow.com/questions/6300756/long-polling-in-objective-c long polling is also known as Comet programming. Long polling is itself not a push technology but can be used under circumstances where a real push is not possible. Basically this enforces to make a request back to the server once you've got a response..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c any other piece of code also referencing the object will be unaffected. What can sometimes be confusing is knowing the circumstances under which you should call retain and release . My general rule of thumb is that if I want to hang on to an object for..
When is layoutSubviews called? http://stackoverflow.com/questions/728372/when-is-layoutsubviews-called off the subview's layoutSubviews is not called at all even though the main view does animate its resize. Under what circumstances is layoutSubviews actually called I have autoresizesSubviews set to NO for my custom view. And in IB I have the top and..
http://stackoverflow.com/questions/8491466/call-exit0-in-iphone-app Never quit an iOS application programmatically because people tend to interpret this as a crash. However if external circumstances prevent your application from functioning as intended you need to tell your users about the situation and explain what they..
How do I make a MKAnnotationView touch sensitive? http://stackoverflow.com/questions/8648263/how-do-i-make-a-mkannotationview-touch-sensitive is actually inside. In my case I just check if the touch is inside one of three buttons and return those. In other circumstances you may have simple rectangle based drilling down through the hierarchy or more complex hit tests for example to avoid transparent..
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