Kotlin - R.string.navigation_drawer_open, Not being imported?

Question

I’m trying to learn Kotlin, but I can’t use navigation_drawer_open, nor the navigation_drawer_close, as shown in the attached image

Someone would give me a suggestion of what to do to fix the problem?

Answer 1

Are they declared in the strings.xml? Normally these strings are created automatically, apparently they are not, so just add them to the strings.xml:

<string name="navigation_drawer_open">Open navigation drawer</string>
<string name="navigation_drawer_close">Close navigation drawer</string>