How to check if “Radiobutton” is checked?

Question

I would like to make a structure with the condition (if-else) RadioButton

I want that when the Radiobutton RB1 is selected, this function is ac

Answer 1

This worked for me:

   Espresso.onView(ViewMatchers.withId(R.id.radiobutton)).check(ViewAssertions.matches(isChecked()))