关于iOS Button的点击问题

我按照理解你的问题去实现了一下，你应该是想要点赞的那种效果吧，就是点下去，然后就加1，再点就取消加1

 #import "ViewController.h"

@interface ViewController ()
 //这个是从storyboard拉过来的按钮
 @property (weak, nonatomic) IBOutlet UIButton *good;
 @property (nonatomic, assign) NSUInteger index;
 @end

@implementation ViewController
 //这个是从storyboard拉过来的按钮事件
(IBAction)dianZan:(id)sender { self.good.selected = !self.good.selected; if (self.good.selected) { self.index++; [self.good setTitle:[NSString stringWithFormat:@"0%lu",self.index] forState:UIControlStateNormal]; [self.good setTitleColor:[UIColor redColor] forState:UIControlStateSelected]; [self.good setImage:[UIImage imageNamed:@"ToolViewEmotionHL"] forState:UIControlStateSelected]; } else { self.index--; [self.good setTitle:[NSString stringWithFormat:@"0%lu",self.index] forState:UIControlStateNormal]; }

}
(void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. }