2024 Get activity viewmodel in fragment

Get activity viewmodel in fragment

Author: thdn

August undefined, 2024

WebNov 4, 2024 · So make sure you have the right type. is ContextWrapper -> baseContext.getActivity () is a recursive call. You can get the activity from your composables casting the context (I haven't found a single case where the context wasn't the activity). However, has Jim mentioned, is not a good practice to do so. WebOct 29, 2024 · A viewModel for the LoginActivity or two different ViewModel for two fragments. If I create one viewModel for activity, login and register view bindings and logics will mix up with each other. But in many tutorials developers are saying that we should create one viewmodel per activity and access those viewmodels from fragment.

How to correctly mock ViewModel on androidTest - Stack Overflow

WebJun 17, 2024 · These fragments can share a ViewModel using their activity scope to handle this communication. By sharing the ViewModel in this way, the fragments do not need to know about each other, and the activity does not need to do anything to facilitate the communication. The following example shows how two fragments can use a shared … WebUsing Fragment-ktx libr in your app you can get viewModel as below. First Update Gradle File as app -> build.gradle implementation 'androidx.fragment:fragment-ktx:1.1.0' // get … i soho i city shah alam homestay

android - ViewModel for fragment - Stack Overflow

WebJan 23, 2024 · The purpose of viewmodel is to hold UI data, so that it survives across configuration changes. And the reason for the following Caution: A ViewModel must never reference a view, Lifecycle, or any class that may hold a reference to the activity context. Is because the viewmodel survives configuration changes whereas activities don't. WebDec 3, 2024 · What you are probably missing is that activityViewModels is an extension function on Fragment.Therefore, calling it from an Activity will result in an unresolved reference.. If you want to get a ViewModel instance from within the activity, then you should:. 1.Inherit from AppCompatActivity rather than Activity.This is because the … WebAug 23, 2024 · viewModelRoutesFragment = new ViewModelProvider(this).get(ViewModelRoutesFragment.class); … i softto instant hand sanitizer

Observe LiveData instance in fragment and activity

How to get an Instance of ViewModel in activity in 2024/21?

WebAug 28, 2024 · 1. To achieve what you are trying to do, you need three things. An activity/fragment that will post the value to the ViewModel, a ViewModel, and an activity/fragment that will retrieve the data from the ViewModel. Lets say your data is stored in an ArrayList, and you want to update and retrieve it from different fragments. WebApr 21, 2024 · 1.Synchronize; 2. make sure your Activity and Fragment use the same ViewModel, use the 'by activityViewModels ()' in fragment. your data will be shared in ViewModel, so you no need to send data from Activity to Fragment directly, call uploadData () method when you get new data from the sensor. You answer is the … i sold my car how do i tell dmv texasWebApr 10, 2024 · The viewPager has no reference of the new fragment with data. That's why you're getting the NullPointerException. There are several ways to pass data from one activity to another. The most convinient way is to use a common ViewModel class. Here is an example: Create a Common view model class. i sold it locations

"WebFeb 8, 2024 · In Support Library 27.1.0 and later, Google has introduced new methods requireContext () and requireActivity () that will return a non null Context or Activty. If the Fragment is not currently attached at the time of calling the method, it will throw an IllegalStateException: so use within a try catch block. Share Improve this answer Follow " - Get activity viewmodel in fragment

Get activity viewmodel in fragment

WebAndroid get view model in Activity and Fragment. First, make sure this dependency is included in the app gradle file. implementation 'androidx.lifecycle:lifecycle-viewmodel … WebJul 28, 2024 · View? { val binding: FragmentBlankBinding = DataBindingUtil.inflate (inflater, R.layout.fragment_blank, container, false) binding.viewmodel = vm//attach your viewModel to xml return binding.root } } Share Improve this answer Follow answered Jul 28, 2024 at 16:00 chand mohd 2,323 1 13 27 Add a comment 1 here how it works with …

Did you know?

WebApr 16, 2024 · In the Activity that had the KoinModule loaded, just need to lazily get the ViewModel through getStateViewModel private val viewModel by lazy { getStateViewModel (bundle = intent ... WebApr 14, 2024 · Recommendations: 1) Mock the data sources the view model is constructed from or 2) add a fragment.setViewModel () and Mark it as only for use in tests. This is a little ugly, but if you don't want to mock data sources, it is pretty easy this way. Share Follow answered Apr 27, 2024 at 11:48 Sam Edwards 864 8 19 1

WebOct 17, 2024 · class ExampleFragment : Fragment(R.layout.fragment_example) { private val menuHost: MenuHost get() = requireActivity() override fun onViewCreated(view: View, savedInstanceState: Bundle?) { menuHost.addMenuProvider(object : MenuProvider { // Добавляем MenuProvider override fun onPrepareMenu(menu: Menu) // Вызывается … WebMar 1, 2024 · A ViewModel remains in memory until the ViewModelStoreOwner to which it is scoped disappears. This may occur in the following contexts: In the case of an …

WebDec 13, 2024 · You can use Fragment Extension def fragment_version = "1.4.0" implementation "androidx.fragment:fragment-ktx:$fragment_version" Fragment View Model private val viewModel by viewModels() Activity Shared ViewModel between fragments private val activityViewModel by activityViewModels() … WebJul 21, 2024 · Hence to get the context in your ViewModel, the ViewModel class should extend the Android View Model Class. That way you can get the context as shown in the example code below. class ActivityViewModel (application: Application) : AndroidViewModel (application) { private val context = getApplication ().applicationContext //...

WebApr 4, 2024 · 1 Answer. You should modify your viewmodel, activity and fragment. First, for your ViewModel, the ViewModelProvider.Factory is deprecated, so use this instead : class MyViewModel (application: Application): AndroidViewModel (application) { private val repository by lazy { MyRepository.newInstance (application) } val list: LiveData

WebMar 13, 2024 · And in activity or Fragment called myViewModel.getUserLiveData.observe (this, Observer { it -> //TODO }) myViewModel.getUser (...) And Now in ViewModel you have object User (userLiveData.getValue ()) Share Improve this answer Follow answered Mar 13, 2024 at 10:56 Sam Rendal 41 1 Add a comment 1 i sold my heart to the junkman songWebAug 11, 2024 · With current declaration Dagger will create a new instance of ActivityViewModel regardless that there already exists one. This happens, because there exists an @Inject annotated constructor for ActivityViewModel. So, dagger is free to assume, that it is the correct way of providing an instance of ActivityViewModel to … i sold it on ebay arizonaWebFeb 11, 2024 · The problems came when we needed the reference of a ViewModel scoped to an Activity on the composable: We create the ViewModel on the Activity: class MainActivity : AppCompatActivity () { private val viewModel by lazyViewModel { MainViewModel () } ... } Get a reference for the MainActivity 's ViewModel on the … i sold my car what do i need to doWebMay 4, 2024 · This Android documentation shows you in detail the procedure to communicate between Activity and Fragment using Interface. Let’s create our Interface to handle it the common way first. i sold my heart to the junkman song videoWebIn MainApplication hold mainActivity and in MainActivity set in onCreate: application.mainActivity = this In onDestroy: application.mainActivity = null In any ViewModel add: class SomeViewModel @Inject constructor ( private val activity: Provider ) Then use it: activity.get ().getString … i sold crack to a pine treeWebAug 9, 2024 · We only need to create ViewModel class and create instance in fragment but using the activity scope so that it will be available for all the fragment of the activity including activity itself. i sold my car to carvanaWebJul 10, 2024 · After digging around I solved my similiar problem by adding the following method to my Activities: protected final T obtainViewModel(@NonNull AppCompatActivity activity, @NonNull Class modelClass) { ViewModelProvider.AndroidViewModelFactory factory = … i sold my flax i sold my wheel