Example for Bootstraper Database Connection

Example 1

Reference from Google Codelabs - Kotlin Fundamental Course

• Get Reference fragment to the app to pass into view-model factory provider

    val application = requireNotNull(this.activity).application 
  

  requireNotNull is Throw Argument if value is null

• Get Reference to data source by reference to DAO

    val dataSource = SleepDatabase.getInstance(application).sleepDatabaseDao
  

• Create Instance of ViewModel Factory send it parameter

    val viewModelFactory = SleepTrackerViewModelFactory(dataSource,application)
  

• Get Reference to View Model

    val sleepTrackerViewModel = ViewModelProviders.of(this,viewModelFactory).get(SleepTrackerViewModel::class.java)