foreach label

foreach label

@interface APViewController ()
{
	NSMutableArray *_Labels;
}

- ( void ) forEachLabel: ( void (^)( UILabel * label ) ) block;

@end


@implementation APViewController

- (void)viewDidLoad
{
	[super viewDidLoad];

	_Labels = [[NSMutableArray alloc] init];

	for ( int i=1; i<=15; i++ )
	{
		UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake( i*20, 200, 20, 20 )];
		label.text = @"x";
		label.textColor = [ UIColor whiteColor ];

		[ self.view addSubview:label ];
		[ _Labels addObject:label ];
	}
}

- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
  [ self forEachLabel:^(UILabel *label) {
		label.textColor = [ UIColor yellowColor ];
	}];
}


- ( void ) forEachLabel: ( void (^)( UILabel * ) ) block
{
  for( UILabel * label in _Labels )
    block( label );
}


@end