[FIXED] Android Kotlin - AdView adSize: val cannot be reassigned

Issue

MobileAds.initialize(this) { }

val adViewBottom = AdView(this)
adViewBottom.adSize = AdSize.BANNER

This worked before I updated the library, now I get

val cannot be reassigned

on

adViewBottom.adSize

changing val to var doesn't solve it

Solution

Admob 21.0.0 changed the way to set ad size directly. You can use the setAdSize method.

MobileAds.initialize(this) { }

val adViewBottom = AdView(this)
adViewBottom.setAdSize(AdSize.BANNER)
// adViewBottom.setAdSize(AdSize.FULL_BANNER)
// adViewBottom.setAdSize(... Anchored adaptive banner size ...)

Answered By - ocos
Answer Checked By - David Goodson (JavaFixing Volunteer)