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2014/10/15 ¤U¤È 10:05:20
iphone Programming Glossary: comparatorSort an array with special characters - iPhone http://stackoverflow.com/questions/2492379/sort-an-array-with-special-characters-iphone Here ™s the long story First define a comparison function. This one is good for natural string sorting static NSInteger comparator id a id b void context NSInteger options NSCaseInsensitiveSearch NSNumericSearch Numbers are compared using numeric value.. arrayWithObjects @ foo_002 @ fôõ_1 @ fôõ_3 @ ｆoo_0 @ ｆoo_1.5 nil NSArray sortedArray myArray sortedArrayUsingFunction comparator context NULL The array in the example contains some funny characters Numbers diacritical marks and some characters from..
how to sort iphone contact book? http://stackoverflow.com/questions/2697893/how-to-sort-iphone-contact-book To sort an array of people use the function CFArraySortValues with the function ABPersonComparePeopleByName as the comparator and a context of the type ABPersonSortOrdering. The user ™s desired sort order as returned by ABPersonGetSortOrdering is..
How can i get the name of image picked through photo library in iphone? http://stackoverflow.com/questions/4314405/how-can-i-get-the-name-of-image-picked-through-photo-library-in-iphone
http://stackoverflow.com/questions/4558639/sort-an-nsmutabledictionary can get the values with 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.. the keys instead messing with the values. Using NSArray sortedKeys myDict keysSortedByValueUsingSelector @selector comparator The comparator is a message selector which is sent to the object you want to order. If you want to order strings then you.. messing with the values. Using NSArray sortedKeys myDict keysSortedByValueUsingSelector @selector comparator The comparator is a message selector which is sent to the object you want to order. If you want to order strings then you should use a..
Sorting NSArray which many contain number http://stackoverflow.com/questions/4588542/sorting-nsarray-which-many-contain-number array using a custom block. I find this more convenient than sortedArrayUsingSelector because you can declare the comparator inline like so NSArray unsortedArray NSArray arrayWithObjects @ Hello @ 4 @ Hi @ 5 @ 2 @ 10 @ 1 nil NSArray sortedArray..
NSFetchedResultsController custom sort not getting called http://stackoverflow.com/questions/4789782/nsfetchedresultscontroller-custom-sort-not-getting-called a UITableView in my project from Core Data using NSFetchedResultsController. I am using a custom search with a comparator although I have also tried a selector and had an identical problem if fetchedResultsController nil return fetchedResultsController.. setFetchBatchSize 20 NSSortDescriptor sortDescriptor NSSortDescriptor alloc initWithKey @ objectName ascending YES comparator ^ id s1 id s2 NSLog @ Comparator custom compare here with print statement NSLog @ Sort Descriptor Set NSArray sortDescriptors.. this tab I have logged all over the program and found that the NSFetchedResultsController does not even enter the comparator block when fetching. It instead sorts it with some default sorting method. If I delete and add an Object with an objectName..
Sorting NSString values as if NSInteger using NSSortDescriptor http://stackoverflow.com/questions/9674707/sorting-nsstring-values-as-if-nsinteger-using-nssortdescriptor objective c ios cocoa touch nssortdescriptor share improve this question You can do this by implementing a custom comparator block when creating your NSSortDescriptor NSSortDescriptor aSortDescriptor NSSortDescriptor sortDescriptorWithKey @ sort.. your NSSortDescriptor NSSortDescriptor aSortDescriptor NSSortDescriptor sortDescriptorWithKey @ sort ascending YES comparator ^ id obj1 id obj2 if obj1 integerValue obj2 integerValue return NSComparisonResult NSOrderedDescending if obj1 integerValue..
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