ViewModelProviders is deprecated in 1.1.0

Question

Looking at the Google docs for ViewModel, they show the below sample code on how to get a ViewModel:

val model = ViewModelProviders         


        

Answer 1

ViewModelProviders.of() has been deprecated.

Use ViewModelProvider constructors directly as they now handle the default ViewModelProvider.Factory role.

 mainActivityViewModel = new ViewModelProvider(this).get(MainActivityViewModel.class);

Answer 2

In case you watch a video from Udacity where you create a GameViewModel and you do not want to write deprecated code just replace:

viewModel = ViewModelProviders.of(this).get(GameViewModel::class.java)

with the following code:

viewModel = ViewModelProvider(this).get(GameViewModel::class.java)
  

and return back to reading ASAP!!

Answer 3

I use lifecycle-extensions 2.2.0 version:

implementation "androidx.lifecycle:lifecycle-extensions:2.2.0" 

It should be work, using ViewModelProvider constructor.

// With ViewModelFactory   
val viewModel = ViewModelProvider(this, YourViewModelFactory).get(YourViewModel::class.java)


//Without ViewModelFactory
val viewModel = ViewModelProvider(this).get(YourViewModel::class.java)

2020/5/15 Update

I find another elegant way to achieve, Android KTX can help

implementation "androidx.fragment:fragment-ktx:1.2.4"
val viewmodel: MYViewModel by viewModels()
val viewmodel: MYViewModel by viewModels { myFactory } //With factory

Ref: https://developer.android.com/reference/kotlin/androidx/fragment/app/package-summary#viewmodels

2020/06/25: corrected the case of the delegate

Answer 4

it should work this way

 viewModel = ViewModelProviders.of(this@MainActivity).get(MainActivityViewModel::class.java)

Answer 5

If you use Kotlin, you can use the property delegate viewModels() like this:

val viewModel: YourViewModel by viewModels()

Source: https://forums.bignerdranch.com/t/solution-to-deprecated-method-viewmodelproviders-of/16833

Answer 6

Use this:

YourViewModel yourViewModel = new ViewModelProvider.AndroidViewModelFactory(getApplication()).create(YourViewModel.class);