为UILabel添加点击事件
// 1. 创建一个点击事件,点击时触发labelClick方法
UITapGestureRecognizer *labelTapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelTouchUpInside)];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 200, 100)];
// 2. 将点击事件添加到label上
[label addGestureRecognizer:labelTapGestureRecognizer];
label.userInteractionEnabled = YES; // 可以理解为设置label可被点击
-(void) labelTouchUpInside:(UITapGestureRecognizer *)recognizer{
UILabel *label=(UILabel*)recognizer.view;
NSLog(@"%@被点击了",label.text);
}