Cannot create an instance of class ViewModel kotlin

Question

Here is my code

class BookmarkViewModel(app: Application) : AndroidViewModel(app) {

    private val dao = BookmarkDb.get(app).bookmarkDao()

    companion o         


        

Answer 1

These 3 things worked for me:

1. Adding/keeping both annotationProcessor and Kapt in the dependencies

annotationProcessor "android.arch.lifecycle:compiler:$lifecycle_version" kapt "android.arch.lifecycle:compiler:$lifecycle_version"

annotationProcessor "android.arch.persistence.room:compiler:$room_version" kapt "android.arch.persistence.room:compiler:$room_version"

2. Addingapply plugin: 'kotlin-kapt' at the top of build.gradle(app) and cleaning the project

3. Re-installing the application