当我尝试在ListView中为一个按钮设置onOnClickListener时，我的应用程序因未知原因而崩溃

I'm building a Contact app using ListView. My ListView has 2 button. In this app, to test the respond ability of the buttons, I intended to set the button "Edit" so that when I click on it, it will change to "Clicked", and the button "Delete" will change to "Clicked", too. When I ran the Debug, the app stopped working and I couldn't get it work again (before I added the onClickListener, this app had worked property).I'm building a Contact app using ListView. My L