ClassCast Exception when using custom view

I am using a custom view to create imageSlider and I receive this error: android.widget.FrameLayout cannot be cast to PACKAGE_NAME.epoxy.CustomImageSlider

Here is my code: layout file: test_layout.xml

 <?xml version="1.0" encoding="utf-8"?>
<FrameLayout
  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="wrap_content">

    <androidx.viewpager.widget.ViewPager
       android:id="@+id/view_pager_layout"
       android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_marginLeft="16dp"
      android:layout_marginRight="16dp"
      android:layout_gravity="start"
      app:tabIndicatorHeight="2dp"
       app:tabMode="scrollable" />
</FrameLayout>

Custom View class:

@ModelView(defaultLayout = R.layout.test_layout)
 class CustomImageSlider : FrameLayout {
    private var viewpager: ViewPager? = null

    private var sliderItems : List<AdapterSliderItemBindingModel_> = Collections.emptyList()

    constructor(context: Context) : super(context) {
    init()
}

    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
    init()
}

    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
    init()
}

private fun init() {
   val view = View.inflate(context, R.layout.test_layout, this)
   this.viewpager = view.findViewById(R.id.view_pager_layout)

}

fun bind(items: List<AdapterSliderItemBindingModel_>) {
    this.sliderItems = items
    this.viewpager?.adapter = MyPager()
}


 inner class MyPager : PagerAdapter() {
   
    override fun instantiateItem(container: ViewGroup, position: Int): Any {
        val adapterProfileListItemBindingModel = sliderItems[position]

        return  adapterProfileListItemBindingModel.layout
    }

     override fun destroyItem(container: ViewGroup, position: Int, view: Any) {
        container.removeView(view as View)
    }

    override fun getCount(): Int {
        return sliderItems.size
    }

    override fun isViewFromObject(view: View, `object`: Any): Boolean {
        return `object` === view
       }

     }

}

Epoxy Model:

@EpoxyModelClass
abstract class EpoxyImageSliderModel : EpoxyModel<CustomImageSlider>() {
   var items: List<AdapterSliderItemBindingModel_>? = null

    override fun getDefaultLayout(): Int {
        return R.layout.test_layout
    }

    override fun bind(customImageSlider:CustomImageSlider) {
        super.bind(customImageSlider)
        customImageSlider.bind(items ?: ArrayList())
   }
}

Epoxy Controller (I have coded this class in java, as I couldn’t use @AutoModel in my controller class when I wrote it in kotlin, it threw AutoModel annotations must not be on private or static fields even though the field was public and non static)

 public class MyEpoxyController extends TypedEpoxyController {

   @AutoModel EpoxyImageSliderModel_ sliderModel;
    private long i = 0;

    @Override
     protected void buildModels(Object d) {
        List<BaseModel> data = (List<BaseModel>) d;
        for(BaseModel model: data){
            if(model != null && 
  model.getItem().component1().equals(SliderCollection.class.getSimpleName())) {
                sliderModel = new EpoxyImageSliderModel_();
                List<SliderItme> items = model.getSliderCollection().getSliderItme();
               List<AdapterSliderItemBindingModel_> temp = new ArrayList<>();
                for(SliderItme item: items){
                    AdapterSliderItemBindingModel_ m = new AdapterSliderItemBindingModel_();
                    m.sliderItem(item);
                    m.id(i++);
                    temp.add(m);
                }
                sliderModel.setItems(temp);
                sliderModel.id(i++);
                sliderModel.addTo(this);
            }
        }
    }
}

The AdapterSliderItemBindingModel_ epoxy model is generated from layout file with databinding, and I have used it in EpoxyImageSliderModel

I get this error : android.widget.FrameLayout cannot be cast to PACKAGE_NAME.epoxy.CustomImageSlider. I have checked similar issues and I used @AutoModel to generate ids for models, also I have set ids in controller before adding the model to controller but it didn’t help.

Here is the complete stack trace for error:

  java.lang.ClassCastException: android.widget.FrameLayout cannot be cast to PACKAGE_NAME.epoxy.CustomImageSlider
    at PACKAGE_NAME.epoxy.EpoxyImageSliderModel_.handlePreBind(EpoxyImageSliderModel_.java:21)
    at com.airbnb.epoxy.EpoxyViewHolder.bind(EpoxyViewHolder.java:52)
    at com.airbnb.epoxy.BaseEpoxyAdapter.onBindViewHolder(BaseEpoxyAdapter.java:97)
    at com.airbnb.epoxy.EpoxyControllerAdapter.onBindViewHolder(EpoxyControllerAdapter.java:16)
    at com.airbnb.epoxy.BaseEpoxyAdapter.onBindViewHolder(BaseEpoxyAdapter.java:15)
    at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6823)
    at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5752)
    at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6019)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5858)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5854)
    at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230)
    at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557)
    at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517)
    at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3924)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3641)
    at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4194)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
    at android.view.View.layout(View.java:19590)PACKAGE_NAME
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at  
androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1544)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1544)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
    at com.android.internal.policy.DecorView.onLayout(DecorView.java:758)
    at android.view.View.layout(View.java:19590)
    at android.view.ViewGroup.layout(ViewGroup.java:6053)
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2484)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2200)
2019-05-28 23:32:56.526 23012-23012/E/AndroidRuntime:     at 
android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1386)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6733)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
    at android.view.Choreographer.doCallbacks(Choreographer.java:723)
    at android.view.Choreographer.doFrame(Choreographer.java:658)
    at 
android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
    at android.os.Handler.handleCallback(Handler.java:789)
    at android.os.Handler.dispatchMessage(Handler.java:98)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6541)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

@elihart Can you please have a look and give some insight on this error?

[elihart]

FYI you can setup auto scrolling for a recyclerview pretty easy with something like this

class AutoScrollingController(private val target: Target) {
    private val automationHandler: Handler by lazy { Handler(Looper.getMainLooper()) }
    private var itemIndex: Int = 0
    var isRunning: Boolean = false
        private set
    var isCancelled: Boolean = false
        private set

    interface Target {
        /**
         * Scroll to the given position.
         * @return true if the scroll was successful, false if no more attempts should be made.
         */
        fun scrollToPosition(position: Int): Boolean
    }

    /**
     * Starts auto scrolling, if it hasn't already been started. Scrolling continues until it is canceled. Once [MAX_SCROLL_COUNT] images are
     * scrolled to this loops back to the first image and continues anew.
     */
    fun start() {
        if (isRunning || ANIMATIONS_DISABLED) {
            return
        }

        isCancelled = false
        isRunning = true

        automationHandler.postDelayed(object : Runnable {
            override fun run() {
                itemIndex++
                // Auto scrolling can be cancelled during the target callback
                if (target.scrollToPosition(itemIndex % MAX_SCROLL_COUNT) && !isCancelled) {
                    automationHandler.postDelayed(this, CYCLE_DELAY_MS)
                } else {
                    cancel()
                }
            }
        }, START_DELAY_MS)
    }

    fun cancel() {
        isCancelled = true
        isRunning = false
        automationHandler.removeCallbacksAndMessages(null)
    }
}

[vipulasri]

@elihart How can I apply this AutoScrollingController to RecyclerView?