Android Two Way DataBinding Problem of Ternary Operator Must be Constant

Question

My EditText is like this:

Answer 1

You need to remove the equal sign before the starting curly brace

android:text="@{viewModel.isAddCase ? ``: `` + viewModel.currentStudent.age}"    

Also you can use String.valueOf instead of the ``

android:text="@{viewModel.isAddCase ? ``: String.valueOf(viewModel.currentStudent.age)}"