Kotlin FrameLayout与ViewPager2控件实现滚动广告栏方法

class BannerView @JvmOverloads constructor(context: Context,attrs: AttributeSet?, defStyleAttr: Int = 0) :
    FrameLayout(context,attrs,defStyleAttr)

    inner class Adapter(var dataList:ArrayList<BannerInfo>):RecyclerView.Adapter<Adapter.ViewHolder>(){
        inner class ViewHolder(view:View):RecyclerView.ViewHolder(view){
            var pic:ImageView = view.findViewById(R.id.image_view1)
        }
        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
            val view = LayoutInflater.from(parent.context).inflate(R.layout.item_banner_image,parent,false)
            val viewHolder = ViewHolder(view as View)
            return viewHolder;
        }
        override fun onBindViewHolder(holder: ViewHolder, position: Int) {
            val banner = dataList[position]
            holder.pic.setImageResource(banner.imageId)
        }
        override fun getItemCount(): Int {
            return dataList.size
        }
    }

        autoplayJob = viewScope.launch {
            while (true){
                if (viewPager.currentItem >= dataList.size-1){
                    viewPager.setCurrentItem(0,true)
                }
                else{
                    viewPager.setCurrentItem(viewPager.currentItem+1,true)
                }
                delay(3000)
            }
        }

    <com.kotlin.banner.BannerView
        android:id="@+id/bannerView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"

var bfs:ArrayList<BannerInfo> = arrayListOf(BannerInfo(R.drawable.banner_1, displayText = "hello"),
            BannerInfo(R.drawable.banner_2, displayText = "hello"),
            BannerInfo(R.drawable.banner_3, displayText = "hello"))
        var bv:BannerView = findViewById(R.id.bannerView1)
        bv.setData(bfs)