class Item(val name: String, val id: Int) {
companion object {
val sampleItems = listOf(
Item("Item 1", 1),
Item("Item 2", 2),
Item("Item 3", 3),
Item("Item 4", 4),
Item("Item 5", 5)
)
}
}
class ItemAdapter(private val items: List<Item>) : RecyclerView.Adapter<ItemAdapter.ViewHolder>() {
inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
val nameTextView: TextView = itemView.findViewById(R.id.nameTextView)
fun bind(item: Item) {
nameTextView.text = item.name
}
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.item_layout, parent, false)
return ViewHolder(view)
}
a
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
holder.bind(items[position])
}
override fun getItemCount(): Int {
return items.size
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val recyclerView: RecyclerView = findViewById(R.id.recyclerView)
recyclerView.layoutManager = LinearLayoutManager(this)
recyclerView.adapter = ItemAdapter(Item.sampleItems)
}
val addButton: Button = findViewById(R.id.addButton)
addButton.setOnClickListener {
val editText: EditText = findViewById(R.id.editText)
val itemName = editText.text.toString()
val newItem = Item(itemName, Item.sampleItems.size + 1)
Item.sampleItems += newItem
recyclerView.adapter?.notifyItemInserted(Item.sampleItems.size - 1)
editText.text.clear()
}
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val button = findViewById<Button>(R.id.button)
val textView = findViewById<TextView>(R.id.textView)
button.setOnClickListener {
textView.text = "Button Pressed!"
}
}
}
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val button = findViewById<Button>(R.id.button)
val textView = findViewById<TextView>(R.id.textView)
button.setOnClickListener {
textView.text = "Button Pressed!"
}
}
}