myuiwindow.m

使用NSSortDescriptor类对NSArray数组中的数据按照规则排序。

#import "MyUIWindow.h"
#import "SortDescriptorAppDelegate.h"

@implementation MyUIWindow

- (void)sortByName:(id)sender{
	SortDescriptorAppDelegate* delegate = [[UIApplication sharedApplication] delegate];

	NSSortDescriptor* nameDescriptor = [[[NSSortDescriptor alloc] initWithKey:@"name_" ascending:YES selector:@selector(localizedCaseInsensitiveCompare:)] autorelease];
	NSArray* sortDescriptors = [NSArray arrayWithObject:nameDescriptor];
	NSArray* sortedArray = [delegate.employeeArray_ sortedArrayUsingDescriptors:sortDescriptors];
}

- (void)sortByAge:(id)sender{
	SortDescriptorAppDelegate* delegate = [[UIApplication sharedApplication] delegate];
	
	NSSortDescriptor* ageDescriptor = [[[NSSortDescriptor alloc] initWithKey:@"age_" 
																   ascending:NO] autorelease]; 
	NSArray* sortDescriptors = [NSArray arrayWithObject:ageDescriptor]; 
	NSArray* sortedArray = [delegate.employeeArray_ sortedArrayUsingDescriptors:sortDescriptors];	
}

@end