define parent fragment viewmodel
Using Fragment-ktx libr in your app you can get viewModel as below in your app-> build.gradle
implementation 'androidx.fragment:fragment-ktx:1.1.0'
// get ViewModel in ParentFragment as
private val viewModel: DemoViewModel by viewModels()
// get same instance of ViewModel in ChildFragment as
private val viewModel: DemoViewModel by viewModels(
ownerProducer = { requireParentFragment() }
)
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