wie Datei aus Nsdocumentverzeichnis nach ihrem Namen sortieren?

Question

Ich habe einige Dateien in nsdocumentdirectory, wenn ich die Datei, die Erträgen die Datei mit zufälligem position.I geholt diesen folgenden Code verwenden:

NSString *downloadDirectory = [Utility bookDownloadFolder]; 
NSString *bookFolder = [[_selectedBook.zipFile lastPathComponent] stringByDeletingPathExtension]; 
NSString *bookFolderFinal = [downloadDirectory stringByAppendingPathComponent:bookFolder]; 
NSMutableArray *retval = [NSMutableArray array]; 
NSFileManager *fileManager = [NSFileManager defaultManager]; 
NSError *error = nil; 
NSArray *files = [fileManager contentsOfDirectoryAtPath:bookFolderFinal error:&error]; 

und der Ausgang ist wie folgt aus:

Dateien (“ 1.jpg, 1.txt, 10.jpg, 10.txt 11.jpg, 11.txt, 12.jpg, 12.txt, 13.jpg "," 13.txt "," 2.jpg "," 2.txt "," 3.jpg "," 3.txt "," 4.jpg "," 4.txt "," 5.jpg ", "5.txt", "6.jpg", "6.txt" "7.jpg", "7.txt", "__MACOSX"

Aber ich möchte die Ausgabe in aufsteigender Reihenfolge wie: Dateien ("1.jpg", "1.txt", "2.jpg", "2 .txt ",)

Wenn ich localizedCaseInsensitiveCompare verwende, um das Array zu sortieren, funktioniert es in diesem Fall nicht, wenn ich localizedCaseInsensitiveCompare verwende, dann ist die Ausgabe nur so. (" __MACOSX "," 1.jpg "," 1.txt "," 10.jpg "," 10.txt "," 11.jpg "," 11.txt "," 12.jpg "," 12.txt "," 13.jpg "," 13. txt "," 2.jpg "," 2.txt "," 3.jpg "," 3.txt "," 4.jpg "," 4.txt "," 5.jpg ",)

Answer 1

[NSSortDescriptor sortDescriptorWithKey:@"self" 
ascending:YEScomparator:^(NSString * string1, NSString * string2){ 
return [string1 compare:string2 options:NSNumericSearch]; 
}]; 

Answer 2

Swift Beispiel youre Problem zu lösen:

let testArray = ["1.jpg","1.txt","10.jpg","10.txt","11.jpg","11.txt","12.jpg","12.txt","13.jpg","13.txt","2.jpg","2.txt", "3.jpg","3.txt","4.jpg","4.txt","5.jpg","5.txt","6.jpg","6.txt", "7.jpg","7.txt"] 

let sortedArray = testArray.sort({ x, y in 
    return x.localizedStandardCompare(y) == NSComparisonResult.OrderedAscending 
}) 


print(sortedArray) 
//"["1.jpg", "1.txt", "2.jpg", "2.txt", "3.jpg", "3.txt", "4.jpg", "4.txt", "5.jpg", "5.txt", "6.jpg", "6.txt", "7.jpg", "7.txt", "10.jpg", "10.txt", "11.jpg", "11.txt", "12.jpg", "12.txt", "13.jpg", "13.txt"] 

Answer 3

NSMutableArray * myArray = [NSMutableArray arraywithobjects: @ "4" @ "2", @ "7", @ "8", Null; // sorting [myArray sortUsingComparator:^NSComparisonResult (NSString * str1, NSString * str2) {return [str1 vergleichen: str2 options: (NSNumericSearch)]; }]; // Protokollierung von NSLog (@ "% @", myArray);