Flutter ListTile 崩溃问题

Question

i was searching how we can put collapse option on List, everything in search result was about listview , i want to set collapse option on my ListTile list, when user will tap on title then subtitle will be visible under title. there was option of using ExpansionTile() , but flutter documentations says it's not valid now.

child: ListTile(
      title: Text(
        "i am visible title",
      ),
      subtitle: Text("i am hidden data, when you will tap on title i will be visible"),
    );

Answer 1

Assuming you are using statefulwidget , you can hide and display the subtitle in setState() using bool datatype on onTap method call.

If you are not using statefulwidget , then you need to update your class first to be statefulwidget .

check this SO answer for more details.