BLOCK

标签：

#import <UIKit/UIKit.h>

typedef void (^BLOCK)(UIColor *);

@interface SecondViewController : UIViewController

@property(nonatomic,copy)BLOCK backColorBlcok;

@end

 SecondViewController *secondVc = [[SecondViewController alloc] init];

    secondVc.backColorBlcok = ^(UIColor *color){

        self.view.backgroundColor = color;

    };

    [self.navigationController pushViewController:secondVc animated:YES];

BLOCK

标签：

原文地址：http://www.cnblogs.com/lhb-iOS/p/5164448.html