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2014/10/15 ¤U¤È 10:05:12
iphone Programming Glossary: collectionDifference between objectForKey and valueForKey? http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey key value coding share improve this question objectForKey is an NSDictionary method. An NSDictionary is a collection class similar to an NSArray except instead of using indexes it uses keys to differentiate between items. A key is an arbitrary..
UISearchBar Sample Code [closed] http://stackoverflow.com/questions/1302962/uisearchbar-sample-code closed Implementing a searchbar can be tricky business and I'm struggling to make it work for my situation. Here's a collection of some of the sample code I've found for implementing a UISearchBar. Please share any others below you've come across below...
Best way to transition between two images in a UIImageView http://stackoverflow.com/questions/212689/best-way-to-transition-between-two-images-in-a-uiimageview two images in a UIImageView I implemented a pretty simple picture viewer that will allow the user to browse through a collection of images. They are loaded from the internet and displayed on the device through a UIImageView object. Something like this..
Does my application “contain encryption”? http://stackoverflow.com/questions/2135081/does-my-application-contain-encryption app is specially designed and limited for banking use or ˜money transactions. The term ˜money transactions includes the collection and settlement of fares or credit functions. vi the source code of your app is œpublicly available your app distributed at..
http://stackoverflow.com/questions/356025/iphone-getting-started important concept to remember with iPhone development is memory management as the device has no concept of garbage collection. How long would it take for a moderate programmer to learn and build an app that manages a list connects to certain websites..
what actually is File Owner and First Responder in iPhone SDK - xCode? http://stackoverflow.com/questions/3768602/what-actually-is-file-owner-and-first-responder-in-iphone-sdk-xcode is simply the first object in the responder chain that can respond to events. The responder chain is a runtime collection or more accurately a hierarchy of objects that can respond to an event. For example consider you have a window with a view..
RESTful frameworks for Android, iOS…? http://stackoverflow.com/questions/4097686/restful-frameworks-for-android-ios at this video of Google IO 2010 when thinking serious about REST Android Feed Framework com.google.android.feeds A collection of classes to help you build content providers. The framework is specially designed to help connect your application to..
http://stackoverflow.com/questions/4558639/sort-an-nsmutabledictionary NSArray values myDict allValues NSArray sortedValues values sortedArrayUsingSelector @selector comparator But if the collection is as you show in your example I mean you can infer the value from the key you can always sort the keys instead messing..
Checking a null value in Objective-C that has been returned from a JSON string http://stackoverflow.com/questions/4839355/checking-a-null-value-in-objective-c-that-has-been-returned-from-a-json-string
Creating a JSON Store For iPhone http://stackoverflow.com/questions/5237943/creating-a-json-store-for-iphone volatility i.e. how often the data changes 1 If the size complexity and volatility of the data are low then using a collection e.g. NSArray NSDictionary NSSet of a serialized custom object would be the best option. Collections must be read entirely.. quickly becomes superior. The managed part of managed objects manages complexity in relationships and behaviors. With collections or SQL you have manually manage complexity and can find yourself quickly swamped. In fact I have seen people trying manage..
iphone+Difference between nil,NIL and null http://stackoverflow.com/questions/5908936/iphonedifference-between-nil-nil-and-null ™t an object. The single instance of NSNull on the other hand is a proper object. NSNull is often used in Foundation collections since they cannot store nil values. In the case of dictionaries objectForKey returns nil to indicate that a given key has.. dict NSMutableDictionary dictionary dict setObject NSNull null forKey @ someKey It ™s worth mentioning that Foundation collections have initialisers that use nil as a marker for the end of a list of objects without having to specify the number of elements.. to specify the number of elements in the list. This can only happen because nil cannot be stored in a Foundation collection. For instance NSArray array NSArray arrayWithObjects @ one @ two nil As for NIL or NSNil there are no such things in Objective..
Is it possible to reference a variable with a string and an int? http://stackoverflow.com/questions/6049175/is-it-possible-to-reference-a-variable-with-a-string-and-an-int this question This is an anti pattern I call the Poor Man's Array. The better way to do this is to use a proper collection like an array instead of a bunch of variables that are secretly related. Done right the code with an array will usually..
What is the difference between Objective-C automatic reference counting and garbage collection? http://stackoverflow.com/questions/7874342/what-is-the-difference-between-objective-c-automatic-reference-counting-and-garb is the difference between Objective C automatic reference counting and garbage collection With the new automatic reference counting ARC introduced in Xcode 4.2 we no longer need to manually manage retain release.. in Xcode 4.2 we no longer need to manually manage retain release in Objective C. This seems similar to garbage collection as done in Objective C on the Mac and in other languages. How does ARC differ from garbage collection iphone ios garbage.. to garbage collection as done in Objective C on the Mac and in other languages. How does ARC differ from garbage collection iphone ios garbage collection automatic ref counting share improve this question the short and sweet answer is as follow..
Application crashed while importing songs from Ipod library in Iphone for iOs 5.0 http://stackoverflow.com/questions/8077725/application-crashed-while-importing-songs-from-ipod-library-in-iphone-for-ios-5 Assign the selected item s to the music player and start playback. counterIpod mediaItemCollection.items count totalcollection counterIpod if totalcollection 10 NSString str NSString stringWithFormat @ BRL Only supports importing 10 songs at a time.. the music player and start playback. counterIpod mediaItemCollection.items count totalcollection counterIpod if totalcollection 10 NSString str NSString stringWithFormat @ BRL Only supports importing 10 songs at a time UIAlertView connectionAlert UIAlertView.. MPMediaItemCollection mediaItemCollection2 if itemsArray1 count 0 mediaItemCollection2 self collectionByAppendingCollection mediaItemCollection else mediaItemCollection2 mediaItemCollection self saveMediaItemAfterDeletting..
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 of ARC and would you recommend it So How much benefit can ARC bring to a project Does ARC have a cost like garbage collection in Java Have you been using ARC and if so how have you found it so far iphone objective c ipad ios5 automatic ref counting.. It is faster than your old code. It is safer than your old code. It is easier than your old code. It is not garbage collection. It has no GC runtime cost. The compiler inserts retains and releases in all the places you should have anyway. But it's..
RestKit Object Mapping Relationships without KVC http://stackoverflow.com/questions/9318565/restkit-object-mapping-relationships-without-kvc @ companyID After RestKit has completed mapping a payload it will pass back through the collection and hydrate any relationships. The processing is deferred until after mapping in case the payload actually creates objects..
http://stackoverflow.com/questions/16337362/kvc-vs-fast-enumeration Value Coding gives us a much more concise almost Ruby like way to do this employees valueForKeyPath @ @avg.salary KVC Collection Operators allows actions to be performed on a collection using key path notation in valueForKeyPath . Any time you see @..
Getting exception as “Collection was mutated while being enumerated” http://stackoverflow.com/questions/3424861/getting-exception-as-collection-was-mutated-while-being-enumerated exception as &ldquo Collection was mutated while being enumerated&rdquo I am getting the Collection was mutated while being enumerated exception when.. exception as &ldquo Collection was mutated while being enumerated&rdquo I am getting the Collection was mutated while being enumerated exception when I am using this code can any one suggest me how to get out of this. PaymentTerms..
App crashes with reason: Collection <__NSArrayM: 0x7071700> was mutated while being enumerated http://stackoverflow.com/questions/5115344/app-crashes-with-reason-collection-nsarraym-0x7071700-was-mutated-while-be crashes with reason Collection __NSArrayM 0x7071700 was mutated while being enumerated Can you please help me to find reason why my app crashes after.. but usualy after some clicks. Error message Terminating app due to uncaught exception 'NSGenericException' reason ' Collection __NSArrayM 0x7071700 was mutated while being enumerated. PLImageTableSegment 0x7051d30 PLImageTableSegment 0x7051d30 PLImageTableSegment..
Creating a JSON Store For iPhone http://stackoverflow.com/questions/5237943/creating-a-json-store-for-iphone down like this _______________________________ 2 SQL Core Data 4 s i _______________ ______________ z e 1 Collection Core Data 3 plist xml Complexity To which we could add a third lessor dimension volatility i.e. how often the data.. low then using a collection e.g. NSArray NSDictionary NSSet of a serialized custom object would be the best option. Collections must be read entirely into memory so that limits their effective persistence size. They have no complexity management and..
iPhone use of mutexes with asynchronous URL requests http://stackoverflow.com/questions/554270/iphone-use-of-mutexes-with-asynchronous-url-requests from a server with the following errors Terminating app due to uncaught exception 'NSGenericException' reason ' Collection NSCFArray 0x3777c0 was mutated while being enumerated.' This typically means that two requests to the server come back with..
What are the advantages and disadvantages of using ARC? [closed] http://stackoverflow.com/questions/7888568/what-are-the-advantages-and-disadvantages-of-using-arc which show up in complex scenarios which you will want to avoid being the first to know and debug. OS X's Garbage Collection is an example of why you may want to wait. As one example the switch could alter when objects are destroyed your objects..
Application crashed while importing songs from Ipod library in Iphone for iOs 5.0 http://stackoverflow.com/questions/8077725/application-crashed-while-importing-songs-from-ipod-library-in-iphone-for-ios-5 delegate methods void mediaPicker MPMediaPickerController mediaPicker didPickMediaItems MPMediaItemCollection mediaItemCollection We need to dismiss the picker self dismissModalViewControllerAnimated YES Assign the selected item s.. delegate methods void mediaPicker MPMediaPickerController mediaPicker didPickMediaItems MPMediaItemCollection mediaItemCollection We need to dismiss the picker self dismissModalViewControllerAnimated YES Assign the selected item s to the music player.. YES Assign the selected item s to the music player and start playback. counterIpod mediaItemCollection.items count totalcollection counterIpod if totalcollection 10 NSString str NSString stringWithFormat @ BRL Only supports..
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