kozmi55

class UserAdapter : RecyclerView.Adapter<UserAdapter.UserHolder>(), BindableAdapter<List<Long>> {

    override fun setData(items: List<Long>) {
        userIds = items
        notifyDataSetChanged()
    }

    var userIds = emptyList<Long>()

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): UserHolder {

kozmi55

<android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layoutManager="android.support.v7.widget.LinearLayoutManager"
            app:data="@{viewModel.userIds}"/>

kozmi55

@BindingAdapter("data")
fun <T> setRecyclerViewProperties(recyclerView: RecyclerView, data: T) {
    if (recyclerView.adapter is BindableAdapter<*>) {
        (recyclerView.adapter as BindableAdapter<T>).setData(data)
    }
}

kozmi55

interface BindableAdapter<T> {
    fun setData(data: T)
}

kozmi55

@BindingAdapter("data")
fun <T> setRecyclerViewProperties(recyclerView: RecyclerView, items: List<Long>) {
    if (recyclerView.adapter is UserAdapter) {
        (recyclerView.adapter as UserAdapter).setData(items)
    }
}

kozmi55

class UserAdapter : RecyclerView.Adapter<UserAdapter.UserHolder>() {

    fun setData(items: List<Long>) {
        userIds = items
        notifyDataSetChanged()
    }

    var userIds = emptyList<Long>()

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): UserHolder {

kozmi55

class MainActivity : AppCompatActivity() {

    private val viewModel = UserViewModel()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val adapter = UserAdapter()

kozmi55

class UserViewModel : BaseObservable() {

    @get:Bindable
    var userIds: List<Long> = emptyList()
        private set(value) {
            field = value
            notifyPropertyChanged(BR.userIds)
        }

    private val updateInterval = 1000L

kozmi55

<android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:data="@{viewModel.userIds}"/>

kozmi55

@Test
fun testOpenDetailsOnItemClick() {
    mockRepoUsers(1)

    activityRule.launchActivity(Intent())

    Espresso.onView(ViewMatchers.withId(R.id.recyclerView))
            .perform(RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(0, ViewActions.click()))

    val expectedText = "User 1: 100 pts"