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2014/10/15 ¤U¤È 10:15:25
iphone Programming Glossary: unarchiveHow to implement Deep copy for the Class in UIKit? http://stackoverflow.com/questions/10188387/how-to-implement-deep-copy-for-the-class-in-uikit this question To create a deep copy of UIImageView object you need to archive it using NSKeyedArchiver and then unarchive it with NSKeyedUnarchiver but there is a problem with this approach because UIImage does not conform to the NSCoding protocol... data archiver encodeObject self forKey @ imageViewDeepCopy archiver finishEncoding archiver release NSKeyedUnarchiver unarchiver NSKeyedUnarchiver alloc initForReadingWithData data UIImageView imgView unarchiver decodeObjectForKey @ imageViewDeepCopy.. archiver release NSKeyedUnarchiver unarchiver NSKeyedUnarchiver alloc initForReadingWithData data UIImageView imgView unarchiver decodeObjectForKey @ imageViewDeepCopy unarchiver release data release return imgView @end Usage Import your UIImageView..
How to duplicate an object in Objective C? http://stackoverflow.com/questions/1092875/how-to-duplicate-an-object-in-objective-c so you cannot make a copy via copy. However it does conform to NSCoding so you can archive the current instance then unarchive a 'copy'. NSData archivedData NSKeyedArchiver archivedDataWithRootObject button UIButton buttonCopy NSKeyedUnarchiver unarchiveObjectWithData.. a 'copy'. NSData archivedData NSKeyedArchiver archivedDataWithRootObject button UIButton buttonCopy NSKeyedUnarchiver unarchiveObjectWithData archivedData Afterwards you'll have to assign any additional properties that weren't carried over in the archive..
Can I encode a subclass of NSManagedObject? http://stackoverflow.com/questions/1371749/can-i-encode-a-subclass-of-nsmanagedobject Normally I would just use an NSKeyedArchiver to package up the object as a data object and ship it over the line then unarchive the object and I'm done. Of course I would need to implement the initWithCoder and encodeWithCoder methods in my custom..
iOS MVC - Passing data back and forth to view controllers and model http://stackoverflow.com/questions/15239499/ios-mvc-passing-data-back-and-forth-to-view-controllers-and-model @ EventRepeat integerValue return self You need to archive the data while storing to NSUserDefaults and unarchive when fetching void save NSUserDefaults defaults NSUserDefaults standardUserDefaults NSData savedData defaults objectForKey.. savedEvents @ mutableCopy Some events are already there in there if savedData savedEvents NSKeyedUnarchiver unarchiveObjectWithData savedData mutableCopy savedEvents addObject self Archiving the savedEvents to data NSData newEventData NSKeyedArchiver..
http://stackoverflow.com/questions/2131351/uiview-duplicate share improve this question The easiest but probably not the fastest way is to archive it into an NSData object and unarchive it right away. NSData tempArchive NSKeyedArchiver archivedDataWithRootObject myView UIView myViewDuplicate NSKeyedUnarchiver..
MPMediaItem - NSCoding problem with MPMediaItemArtwork http://stackoverflow.com/questions/2444870/mpmediaitem-nscoding-problem-with-mpmediaitemartwork conform to NSCoding. So if I try to archive a MPMediaItem if that item has some artwork in it it will not be able to unarchive. I tried to make a category of MPMediaItemArtwork and make it conform to NSCoding but I can't seem to do that because we..
iPhone - archiving array of custom objects http://stackoverflow.com/questions/2814316/iphone-archiving-array-of-custom-objects UIApplication sharedApplication delegate delegate gameSave setBoard board NSMutableArray savedGames NSKeyedUnarchiver unarchiveObjectWithFile self dataFilePath if savedGames nil NSKeyedArchiver archiveRootObject delegate gameSave toFile self dataFilePath.. problems. If savedGames is nil you are saving an object not an array to the file. That means on the next run the unarchived object will not be an array as you expect. Unarchived arrays are immutable. Declaring the type to NSMutableArray doesn't.. Declaring the type to NSMutableArray doesn't matter if you archive a mutable array you will get an immutable one on unarchive. You need to call mutableCopy on the unarchived array if you want to modify it. I'm not sure about the exception exactly..
Trouble decoding with NSKeyedUnarchiver http://stackoverflow.com/questions/3358074/trouble-decoding-with-nskeyedunarchiver mwDecoder NSKeyedUnarchiver fwDecoder NSMutableArray tempMusicalWorks NSMutableArray tempFeaturedWorks unarchive the file data mwData NSData dataWithContentsOfFile mwPath fwData NSData dataWithContentsOfFile fwPath mwDecoder NSKeyedUnarchiver..
this class is not key value coding-compliant for the key authView http://stackoverflow.com/questions/5109309/this-class-is-not-key-value-coding-compliant-for-the-key-authview
http://stackoverflow.com/questions/648143/persisting-custom-objects archiver finishEncoding archiver release data writeToFile path atomically YES data release and another one to unarchive or create a new object MyArchive newFromFile NSString path orWithMyStuff MyStuff myStuff NSData data NSData alloc initWithContentsOfFile.. NSString path orWithMyStuff MyStuff myStuff NSData data NSData alloc initWithContentsOfFile path NSKeyedUnarchiver unarchiver NSKeyedUnarchiver alloc initForReadingWithData data MyArchive myArchive unarchiver decodeObjectForKey myArchiveKey unarchiver.. path NSKeyedUnarchiver unarchiver NSKeyedUnarchiver alloc initForReadingWithData data MyArchive myArchive unarchiver decodeObjectForKey myArchiveKey unarchiver finishDecoding if myArchive myArchive retain else myArchive MyArchive alloc..
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