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2014/10/15 ¤U¤È 10:03:29
iphone Programming Glossary: abstractiOS 6 - viewDidUnload migrate to didReceiveMemoryWarning? http://stackoverflow.com/questions/12674268/ios-6-viewdidunload-migrate-to-didreceivememorywarning
How can you reference child entity name in a predicate for a fetch request of the parent entity? http://stackoverflow.com/questions/1579337/how-can-you-reference-child-entity-name-in-a-predicate-for-a-fetch-request-of-th name in a predicate for a fetch request of the parent entity I have the need to create a complex predicate for an abstract base object. I want to have separate predicate queries for different inheriting entities and key off the sub entity type..
“Hide” the Tab Bar When Pushing a View http://stackoverflow.com/questions/1627930/hide-the-tab-bar-when-pushing-a-view iPhone application has a Tab Bar with five tab bar items. When you select the Latest tab the app shows the title and abstract summary in a UITableView. When you select an individual story to read the Tab Bar disappears and is replaced with a header..
http://stackoverflow.com/questions/2009399/cryptic-error-from-core-data-nsinvalidargumentexception-reason-referencedata6 error from Core Data NSInvalidArgumentException reason referenceData64 only defined for abstract class I'm doing an iPhone app that reads data from XML file turn them into Core Data Managed Objects and save them. The.. Terminating app due to uncaught exception 'NSInvalidArgumentException' reason ' _referenceData64 only defined for abstract class. Define NSTemporaryObjectID_default _referenceData64 ' On a bigger data set ~2000 this happens every time but not.. I have the same issue. It works for smaller data sets but for larger sets I get _referenceData64 only defined for abstract class errors. There's no abstract entities in my model. EDIT I think I got this resolved. The issue in my case was a confusion..
An iPhone library for shape recognition via the camera http://stackoverflow.com/questions/2093143/an-iphone-library-for-shape-recognition-via-the-camera post in here on the subject on the subject Computer Vision but Im getting more confused than enlightened. I have 6 abstract shapes printed on a piece of paper and I would like to have the camera on the iPhone identify these shapes from different..
http://stackoverflow.com/questions/2978977/what-is-delegate-in-iphone will be shared by many other objects that have a more specific task to carry out. The delegate itself will be more abstract and should be very reusable for different tasks. The object which contains the delegate typically sends the delegate a message..
Android-iPhone single codebase cross development http://stackoverflow.com/questions/3045477/android-iphone-single-codebase-cross-development platform share improve this question You could use Titanium appcelerator . Titanium allows you to write apps in an abstract way with JavaScript and then compile it to a mix of JavaScript and native code. This gives you a native look on iPhone and..
Looking for a graph layout framework for iOS [closed] http://stackoverflow.com/questions/3692840/looking-for-a-graph-layout-framework-for-ios pie charts etc . I am looking for a layout framework which determines the optimal location for arbitrary nodes in an abstract graph. iphone ipad graph ios graph layout share improve this question According to a post on the graphviz development..
What Techniques Are Best To Live Stream iPhone Video Camera Data To a Computer? http://stackoverflow.com/questions/3964442/what-techniques-are-best-to-live-stream-iphone-video-camera-data-to-a-computer This depends a lot on your target resolution and what type of frame rate performance you are targeting. From an abstract point of view I would probably have a capture thread to fill a buffer directly from AVCaptureOutput and a communications..
NSURLCredentialStorage and client certificate authentication http://stackoverflow.com/questions/4164846/nsurlcredentialstorage-and-client-certificate-authentication of NSURLConnection authentication challenges this is useful for higher level classes that load resources from URLs but abstract the NSURLConnection away and don't provide a delegate for handling authentication challenges . This seems similar to installing..
Getting cell tower information in an iOS application? http://stackoverflow.com/questions/4567708/getting-cell-tower-information-in-an-ios-application iphone objective c ios share improve this question There is no official way to do this as far as I know. iOS SDKs abstract that info to a single and easy to use location API. The application you link is probably using private APIs from iOS. That..
http://stackoverflow.com/questions/4969168/nsoperation-performance from NSOperation... Any Ideas about this iphone nsoperation share improve this question since NSOperation is an abstract class there is no way to use NSOperation without using a subclass of NSOperation. If you don't want to subclass yourself..
cocos2d-iOS - Gesture recognisers http://stackoverflow.com/questions/4985917/cocos2d-ios-gesture-recognisers used in a superclass for scene controllers so the target for the selector is hard coded to self but you could easily abstract that to a passed in object. Also you could extrapolate the above to easily create gesture recognizers for taps pinches etc...
Creating a JSON Store For iPhone http://stackoverflow.com/questions/5237943/creating-a-json-store-for-iphone create a Core Data model with 100's of entities and then use a mapper to import the JSON into it. Do you mean actual abstract entities here or just managed objects Remember entities are to managed objects what classes are to instances. If the former..
iphone+Difference between nil,NIL and null http://stackoverflow.com/questions/5908936/iphonedifference-between-nil-nil-and-null nil nsnull share improve this question nil is the literal null value for Objective C objects corresponding to the abstract type id or any Objective C type declared via @interface . For instance NSString someString nil NSURL someURL nil id someObject..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c void windowDidMove NSNotification notification ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in this case. Delegate implementors would..
Delegate vs Protocol [duplicate] http://stackoverflow.com/questions/6361958/delegate-vs-protocol a protocol at compile time and also at run time using the conformsToProtocol .. NSObject method. A delegate is a more abstract term that refers to the Delegation Design Patten. Using this design pattern a class would have certain operations that it..
What exactly does delegate do in xcode ios project? http://stackoverflow.com/questions/7215698/what-exactly-does-delegate-do-in-xcode-ios-project is important. Simply put a delegate is a callback. Two main scenarios to use delegates A class or control wants to abstract out the details on how to do work like retrieve data . Allow others to hook code into a pipeline. Examples UITableView a..
How can I programmatically link an UIView or UIImageView with an event like “touch up inside”? http://stackoverflow.com/questions/910334/how-can-i-programmatically-link-an-uiview-or-uiimageview-with-an-event-like-tou In SDK version 3.2 could be earlier i donno you can add gesture recognizers to a UIView. UIGestureRecogniser is an abstract class that allows you to define a gesture tap pinch swipe etc and add it to a UIView and when the gesture recognizer recognizes..
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