布局很简单,R.layout.onepage
仅有一个占满全屏幕的ImageView
名为onei
,R.layout.activity_view
仅有一个占满全屏幕的ViewPager2
名为vp
以下为Activity
的全部代码:
class ViewActivity:Activity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_view)
vp.adapter = ViewData.RecyclerViewAdapter()
vp.registerOnPageChangeCallback(object : OnPageChangeCallback(){})
}
class ViewData(itemView: View) : RecyclerView.ViewHolder(itemView) {
class RecyclerViewAdapter: RecyclerView.Adapter<ViewData>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewData {
return ViewData(LayoutInflater.from(parent.context).inflate(R.layout.onepage, parent, false))
}
override fun onBindViewHolder(holder: ViewData, position: Int) {
when(position){
0 -> holder.itemView.onei.setImageResource(R.drawable.img1)
1 -> holder.itemView.onei.setImageResource(R.drawable.img2)
2 -> holder.itemView.onei.setImageResource(R.drawable.img3)
}
}
override fun getItemCount(): Int {
return 3
}
}
}
}