i want to update the value of my textview that is in the PosActivity when the button in MyAdapter is click ( to increase/decrease the quantity and to delete the card from recycler view). and i can't find anything on how to do it.
here is what i tried.
in MyAdapter :
package com.mycodlabs.pos.ui.sale.adapter
import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import com.mycodlabs.pos.R
import com.mycodlabs.pos.domain.inventory.ProductModel
import kotlinx.android.synthetic.main.pos_item_card.view.*
import java.math.BigDecimal
class MyAdapter(mUx: Context, var selectedItems: ArrayList<ProductModel>) : RecyclerView.Adapter<MyAdapter.ViewHolder>() {
val mUx = mUx
// var quantity = 1
var totalPrice = BigDecimal.ZERO
class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
var pclose = itemView.removeItempos
var pname = itemView.pos_name
var pprice = itemView.pos_price
var pqty = itemView.pos_qty
var pminus = itemView.cart_minus_img
var pplus = itemView.cart_plus_img
// val pimage = itemView.pos_image
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.pos_item_card, parent, false)
return ViewHolder(view)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val pos: ProductModel = selectedItems[position]
holder.pname.text = pos.name
holder.pprice.text = pos.unitPrice.toString()
holder.pqty.text = pos.quantity.toString()
// holder.pimage.= pos.image
holder.pclose.setOnClickListener {
val username = pos.name
var price = pos.unitPrice
totalPrice -= price
selectedItems.removeAt(position)
notifyDataSetChanged()
notifyItemRangeChanged(position, selectedItems.size)
// Toast.makeText(mUx, "User $username Deleted", Toast.LENGTH_SHORT).show()
}
holder.pminus.setOnClickListener {
if(pos.quantity == 1 ){
// Toast.makeText(mUx,"Can't go any lower", Toast.LENGTH_SHORT).show()
}else {
pos.quantity -= 1
notifyItemChanged(position)
}
}
holder.pplus.setOnClickListener {
pos.quantity = 1
notifyItemChanged(position)
}
}
fun grandTotal(items: ArrayList<ProductModel>): BigDecimal {
totalPrice = BigDecimal.ZERO
for (i in items.indices) {
totalPrice = items[i].unitPrice.multiply(items[i].quantity.toBigDecimal())
}
return totalPrice
}
fun clearData() {
selectedItems.clear()
notifyDataSetChanged()
}
override fun getItemCount() = selectedItems.size
}
and in the Activity:
package com.mycodlabs.pos.ui
import android.os.Bundle
import android.view.View
import android.widget.*
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.google.android.material.bottomsheet.BottomSheetBehavior
import com.mycodlabs.pos.R
import com.mycodlabs.pos.db.AndroidDatabase
import com.mycodlabs.pos.db.DatabaseTables
import com.mycodlabs.pos.db.inventory.InventoryDbo
import com.mycodlabs.pos.db.sale.SalesLinesDao
import com.mycodlabs.pos.domain.inventory.ProductModel
import com.mycodlabs.pos.ui.sale.adapter.MyAdapter
import kotlinx.android.synthetic.main.activity_pos.*
import kotlinx.android.synthetic.main.adapter_available_promotions.*
import kotlinx.android.synthetic.main.dialog_paymentsuccession.view.*
import kotlinx.android.synthetic.main.dialog_saleedit.*
import kotlinx.android.synthetic.main.layout_addcategory.*
import kotlinx.android.synthetic.main.layout_sale.*
import kotlinx.android.synthetic.main.listview_stock.*
import kotlinx.android.synthetic.main.pos_bottom_sheet.*
import kotlinx.android.synthetic.main.pos_item_card.*
class PosActivity : AppCompatActivity() {
private lateinit var bottomSheetBehavior: BottomSheetBehavior<LinearLayout>
private lateinit var productNames: ArrayList<String>
private lateinit var recyclerView: RecyclerView
private lateinit var db: SalesLinesDao
//// Create an empty list to store the selected items
var selectedItems = ArrayList<ProductModel>()
//// Create an adapter for the RecyclerView
val adapter = MyAdapter(this,selectedItems)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_pos)
// for Back button
back.setOnClickListener {
finish()
}
check_out_Pos.setOnClickListener{
// val pos = ProductModel()
//
// db = SalesLinesDbo(this)
//
// pos.name = pos_name.text.toString()
//
// db.addLineItem(pos.id, LineItemModel())
adapter.clearData()
}
// val autoCompleteTextView = findViewById<AutoCompleteTextView>(R.id.searchBoxPos)
// autoCompleteTextView.threshold = 0
// val suggestions =InventoryDbo.getInstance(applicationContext).allProduct
// var NameArray=suggestions.toList().filter { t -> t.name.contains(autoCompleteTextView)}.toList().map { m->m.name }
// val arrayAdapter = ArrayAdapter(this, android.R.layout.simple_expandable_list_item_2 ,NameArray)
// autoCompleteTextView.setAdapter(arrayAdapter)
// Auto Complete Textview filtering from Product table colm "productName"
val autoCompleteTextView = findViewById<AutoCompleteTextView>(R.id.searchBoxPos)
val productNames = ArrayList<String>()
val dbHelper = AndroidDatabase(this)
val db = dbHelper.readableDatabase
val cursor = db.rawQuery(
"SELECT DISTINCT ${InventoryDbo.colm_productName} FROM ${DatabaseTables.TABLE_PRODUCT} WHERE ${InventoryDbo.colm_productName} like '%%'",
null
)
if (cursor.moveToFirst()) {
do {
productNames.add(cursor.getString(cursor.getColumnIndex(InventoryDbo.colm_productName)))
} while (cursor.moveToNext())
}
cursor.close()
db.close()
val adapterr = ArrayAdapter(this, android.R.layout.simple_dropdown_item_1line, productNames)
autoCompleteTextView.setAdapter(adapterr)
// //// Auto Complete suggestion item display in recyclerview on select
// // Create the RecyclerView
val recyclerView = findViewById<RecyclerView>(R.id.sale_List_Pos)
//// Create a layout manager for the RecyclerView
val layoutManager = LinearLayoutManager(this)
recyclerView.layoutManager = layoutManager
recyclerView.adapter = adapter
// Set an item click listener for the AutoCompleteTextView
searchBoxPos.setOnItemClickListener { _, _, position, _ ->
// Get the selected product name and product from the list
val selectedItem = autoCompleteTextView.adapter.getItem(position).toString()
// val selectedProductName = productNames[position]
val selectedProduct = InventoryDbo.getInstance(applicationContext).getPosProductByName(selectedItem).first()
//InventoryDbo.getProductByName(selectedProductName)
// Add the selected product to the selected items list
selectedItems.add(selectedProduct)
// Notify the adapter that the data has changed
adapter.notifyDataSetChanged()
// Clear the focus and text from the AutoCompleteTextView
searchBoxPos.clearFocus()
searchBoxPos.setText("")
total_items_Pos.text = adapter.grandTotal(selectedItems).toString()
}
//for the bottomsheet
bottomSheetBehavior = BottomSheetBehavior.from<LinearLayout>(std_btm_sht)
bottomSheetBehavior.setBottomSheetCallback(object :
BottomSheetBehavior.BottomSheetCallback() {
override fun onStateChanged(bottomSheet: View, state: Int) {
print(state)
when (state) {
BottomSheetBehavior.STATE_HIDDEN -> {
}
BottomSheetBehavior.STATE_EXPANDED -> {
total_items_Pos.text = adapter.grandTotal(selectedItems).toString()
}
BottomSheetBehavior.STATE_COLLAPSED -> {
total_items_Pos.text = adapter.grandTotal(selectedItems).toString()
}
BottomSheetBehavior.STATE_DRAGGING -> {
total_items_Pos.text = adapter.grandTotal(selectedItems).toString()
}
BottomSheetBehavior.STATE_SETTLING -> {
total_items_Pos.text = adapter.grandTotal(selectedItems).toString()
}
BottomSheetBehavior.STATE_HALF_EXPANDED -> {
total_items_Pos.text = adapter.grandTotal(selectedItems).toString()
}
}
}
override fun onSlide(bottomSheet: View, slideOffset: Float) {
}
})
}
}
i hope you can help me solve this because it was bugging me all day and i couldn't find anything about it
CodePudding user response：
I'll post the changes just for the plus button, you can then repeat it for the others. Mind that this is an example, as I don't in what way you'd like to update the text of the TextView or what's the name of the TextView you already have.
class MyAdapter(
mUx: Context,
var selectedItems: ArrayList<ProductModel>,
val plusLambda: (String) -> Unit // <------
) : RecyclerView.Adapter<MyAdapter.ViewHolder>() {
...
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val pos: ProductModel = selectedItems[position]
...
holder.pplus.setOnClickListener {
pos.quantity = 1
plusLambda("The new quantity is: ${ pos.quantity }") // <------
notifyItemChanged(position)
}
...
class PosActivity : AppCompatActivity() {
...
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_pos)
...
val adapterr = ArrayAdapter(this,
android.R.layout.simple_dropdown_item_1line,
productNames) {
someTextView.text = it // <------
}
autoCompleteTextView.setAdapter(adapterr)
...
Of course, you can use just one lambda for all buttons if all you want to do is to change the text of the TextView.