SESL Material/com.google.android.material.textfield/TextInputLayout/END_ICON_DROPDOWN_MENU

END_ICON_DROPDOWN_MENU

val END_ICON_DROPDOWN_MENU: Int = 3

The TextInputLayout will show a dropdown button if the EditText is an and a Widget.MaterialComponents.TextInputLayout.(...).ExposedDropdownMenu style is being used.

Clicking the button will display a popup with a list of options. The current selected option is displayed on the EditText.