ios - 按钮可以点击，但是进不去点击方法

Question

因为项目需要我在一个scrollerView上添加了四个ViewController 然后再ViewController上面添加了一个按钮 点击以后可以看到点击的效果，但是就是进不去方法 真的不知道为什么了

Answer 1

My problem does not belong to any version commonly used on the Internet, but to my own NC, and there is a problem with the four ViewControllers I created