GRizzi91

class ExpandableStackViewAdapter(
    private val models: List<String>,
    private val context: Context
) : BaseAdapter() {

    override fun getCount(): Int = models.size

    override fun getItem(position: Int): String = models[position]

    override fun getItemId(position: Int): Long = position.toLong()

GRizzi91

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    app:cardCornerRadius="16dp"
    android:layout_width="300dp"
    app:cardUseCompatPadding="true"
    android:layout_height="200dp"
    android:layout_margin="16dp"
    android:id="@+id/cardContainer">

GRizzi91

class ExpandableStackView @JvmOverloads constructor(
    context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : MotionLayout(context, attrs, defStyleAttr) {

    fun setAdapter(adapter: BaseAdapter) { }
}

GRizzi91

fun setAdapter(adapter: BaseAdapter) {

        val scene = MotionScene(this)

        val startSetId = View.generateViewId()
        val startSet = ConstraintSet()
        startSet.clone(this)

        val endSetId = View.generateViewId()
        val endSet = ConstraintSet()

GRizzi91

class ExpandableStackView @JvmOverloads constructor(
    context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : MotionLayout(context, attrs, defStyleAttr) {

    fun setAdapter(adapter: BaseAdapter) {

        val scene = MotionScene(this)

        val startSetId = View.generateViewId()
        val startSet = ConstraintSet()

GRizzi91

for (i in 0 until adapter.count) {
        val view = adapter.getView(i, null, this)
        view.id = View.generateViewId()

        startSet.constrainHeight(view.id, ConstraintSet.WRAP_CONTENT)
        endSet.constrainHeight(view.id, ConstraintSet.WRAP_CONTENT)

        connectViewToParent(startSet, view)
        connectViewToParent(endSet, view) 
}

GRizzi91

val views = mutableListOf<View>()

for (i in 0 until adapter.count) {

    val view = adapter.getView(i, null, this)
    val cardView = view.findViewById<CardView>(R.id.cardContainer)
    view.id = View.generateViewId()

    startSet.constrainHeight(view.id, ConstraintSet.WRAP_CONTENT)
    endSet.constrainHeight(view.id, ConstraintSet.WRAP_CONTENT)

GRizzi91

fun setAdapter(adapter: BaseAdapter) {

    val scene = MotionScene(this)

    val startSetId = View.generateViewId()
    val startSet = ConstraintSet()
    startSet.clone(this)

    val endSetId = View.generateViewId()
    val endSet = ConstraintSet()

GRizzi91

fun setAdapter(adapter: BaseAdapter) {

    val scene = MotionScene(this)

    val startSetId = View.generateViewId()
    val startSet = ConstraintSet()
    startSet.clone(this)

    val endSetId = View.generateViewId()
    val endSet = ConstraintSet()

GRizzi91

fun ConstraintSet.setCardElevation(cardView: CardView, elevation: Float) {
    getConstraint(cardView.id)?.let {
        it.mCustomConstraints["CardElevation"] = ConstraintAttribute(
            "CardElevation",
            ConstraintAttribute.AttributeType.DIMENSION_TYPE,
            elevation
        )
    }
}