Viewmodel
To use viewmodel first need to add gradle dependency
implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
make new kotlin file with appropriate viewmodel name
class SampleViewModel : ViewModel()
Add init block and override onCleared
. Add log statements to both
Create a field for the viewmodel class we created in the recquired activity
private lateinit var sampleviewmodel: SampleViewModel
Inside oncreate of class or fragment initialize viewmodel
viewModel = ViewModelProviders.of(this).get(GameViewModel::class.java)
now place the logic codes in the viewmodel class
view model should never hold references to activities or fragments.
UI controller(activity) should be as simple as possible
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