如何排序鍵的NSArray？

Question

我有鑰匙的NSArray從NSDictionary這樣的：

NSArray *array = [[NSArray alloc] initWithArray:[myDict allKeys]]; 
[array sortedArrayUsingSelector:@selector(compare:)]; 

爲什麼不陣列得到命令？

Answer 1

我認爲它有用，你

NSDictionary *stateZip; 
NSArray *states; 
NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:plistPath];   
self.stateZip=dictionary; 
[dictionary release]; 


NSArray *component = [self.stateZip allKeys]; 
NSArray *sorted =[component sortedArrayUsingSelector:@selector(compare:)]; 
self.states=sorted; 

個

ragards， CNSivakUmar

Answer 2

Heyy試試這個....

NSSortDescriptor *lastNameSorter = [[NSSortDescriptor alloc] initWithKey:@"lastName" ascending:YES]; 

這樣做，我把這個在data.h/M文件作爲NSMutableArray裏與數據或viewcontroller.h/M檔爲我創建需要在表格中顯示數據？

Answer 3

這可能會有所幫助：

NSSortDescriptor *sortDesc = [[NSSortDescriptor alloc] initWithKey:@」self」 ascending:YES]; 
[array sortUsingDescriptors:[NSArray arrayWithObject:sortDesc]]; 
[sortDesc release]; 

欲瞭解更多信息，看看

1. NSSortDescriptor
2. 排序，NSArrays