android-architecture-components

问题 I need to use an AndroidViewModel with application context and a SavedStateHandle . I have it already working with application context, but I fail adding a SavedStateHandle to it. This is what I have, with only the application context: // A1. get ViewModel in Fragment val viewModel = ViewModelProvider(viewLifecycleOwner).get(MyViewModel::class.java) // A2. MyViewModel derives from my custom BaseAndroidViewModel class MyViewModel(application: Application) :BaseAndroidViewModel(application) //

问题 In the summer of last year I started refactoring my Android application with Android's architecture components (Room, ViewModel, LiveData). I have two Room repositories, one of them is accessed by multiple views (fragments) of the application. Because of that I used an AndroidViewModel , which has access to this repository and which is initialized in my MainActivity . new ViewModelProvider(this).get(CanteensViewModel.class); In my two fragments I accessed this ViewModel by new

问题 I have a View Model that extends AndroidViewModel class MoveViewModel(application: Application): AndroidViewModel(application),CoroutineScope{ .... } And I want to unit test it but I cannot figure out how to Mock the Application class @Test fun testSearchDataValidation() { val application = Mockito.mock(Application::class.java) val viewModel = MoveViewModel(application) ..... } But when I go to run the test I get an error that Mockito cannot mock Application org.mockito.exceptions.base

问题 I have a View Model that extends AndroidViewModel class MoveViewModel(application: Application): AndroidViewModel(application),CoroutineScope{ .... } And I want to unit test it but I cannot figure out how to Mock the Application class @Test fun testSearchDataValidation() { val application = Mockito.mock(Application::class.java) val viewModel = MoveViewModel(application) ..... } But when I go to run the test I get an error that Mockito cannot mock Application org.mockito.exceptions.base

问题 I'm trying to make animation with motion layout, and want to set scrollView as targetAnchor for motion scene onSwipe Transition, but it doesn't work. Maybe I don't know some thing about onSwipe transition. Here is my layout file <androidx.constraintlayout.motion.widget.MotionLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color

问题 I'm trying to implement MVVM pattern usingGoogle's android architecture components while using RX Java in NetworkBoundResource . However I'm having a difficult time finding a way to communicate the error response from network call to activity. here is a link to the original github project. I have read this post about "Refactoring google's NetworkBoundResource class to use RxJava instead of LiveData" but still not clear how to actually solve the problem. would appreciate if you could direct me

问题 I want to send an extra parameter to my ViewModel, but this extends from AndroidViewModel . How can I add this parameter to the ViewModelFactory class ? ViewModel class ProjectViewModel(application: Application) : AndroidViewModel(application) { // need a param for project id... } ViewModelFactory class ProjectViewModelFactory(val projectId: Int): ViewModelProvider.Factory { override fun <T : ViewModel?> create(modelClass: Class<T>): T { // need to send this... return ProjectViewModel

问题 I have tried to read this but it doesn't solve my issue so I navigate to next destination using this code val nextDirection = CreateEventNameFragmentDirections.actionToCreateEventType(userKM, newEvent) findNavController().navigate(nextDirection) but it crash after I rotate the device with error java.lang.IllegalStateException: no current navigation node i update the gradle using this implementation 'android.arch.navigation:navigation-fragment-ktx:2.2.1' implementation 'android.arch.navigation

问题 I have tried to read this but it doesn't solve my issue so I navigate to next destination using this code val nextDirection = CreateEventNameFragmentDirections.actionToCreateEventType(userKM, newEvent) findNavController().navigate(nextDirection) but it crash after I rotate the device with error java.lang.IllegalStateException: no current navigation node i update the gradle using this implementation 'android.arch.navigation:navigation-fragment-ktx:2.2.1' implementation 'android.arch.navigation

问题 I have tried to read this but it doesn't solve my issue so I navigate to next destination using this code val nextDirection = CreateEventNameFragmentDirections.actionToCreateEventType(userKM, newEvent) findNavController().navigate(nextDirection) but it crash after I rotate the device with error java.lang.IllegalStateException: no current navigation node i update the gradle using this implementation 'android.arch.navigation:navigation-fragment-ktx:2.2.1' implementation 'android.arch.navigation