Saving Data on Android

drodquiz
 with the name 
viewmodel
. Create a new 
Kotlin class inside this package and name it 
MainViewModel
.
Make 
MainViewModel
 extend the 
ViewModel
 by modifying your code like this:
class
 
MainViewModel
() : ViewModel() { 
     
}
Now, since you are going to need your repository to interact with your database from 
your 
ViewModel
s, add the following parameter to the primary constructor of your 
class:
class
 
MainViewModel
(
private
 
val
 repository: QuizRepository) : 
ViewModel() { 
     
}
Finally, add the following code:
fun
 
prepopulateQuestions
()
 { 
  
for
 (question 
in
 QuestionInfoProvider.questionList) { 
    repository.saveQuestion(question) 
  } 
  
for
 (answer 
in
 QuestionInfoProvider.answerList) { 
    repository.saveAnswer(answer) 
  } 
} 
 
fun
 
clearQuestions
()
 = repository.deleteQuestions()
prepopulateQuestions()
 creates new question and answer records in your 
database by using the sample data included in your 
QuestionInfoProvider
, while 
clearQuestions()
 deletes all the questions in your database using 
deleteQuestions()
 on your 
QuizRepository
.