iOS扩大按钮的点击范围

// 重写此方法将按钮的点击范围扩大
- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event {CGRect bounds = self.bounds;// 扩大点击区域bounds = CGRectInset(bounds, -20, -20);// 若点击的点在新的bounds里面。就返回yesreturn CGRectContainsPoint(bounds, point);
}