ListView Example in Kotlin

ListView Example in Kotlin

Listview is used to display array data in vertical scrollable list format

activity_main.xml

In activity_main.xml we have created an listview 

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

<LinearLayout      

  xmlns:android="http://schemas.android.com/apk/res/android"      

  xmlns:tools="http://schemas.android.com/tools"    

    xmlns:app="http://schemas.android.com/apk/res-auto"      

    android:layout_width="match_parent"   

    android:layout_height="match_parent"     

    tools:context=".MainActivity"android:orientation="vertical">

  <ListView     

     android:layout_width="match_parent"       

   android:layout_height="wrap_content"      

    android:id="@+id/listview">

  </ListView>


</LinearLayout>

MainActivity.kt

In MainActivity.kt we are going to display the lang array data in listview using arrayAdapter and futher continuing it we perform action on click of any item in the list the selected data will be shown using Toast .( check out this link to know What is toast)

package com.example.kotlinlistview

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.widget.AdapterView
import android.widget.ArrayAdapter
import android.widget.Toast
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

   var lang = arrayOf<String>("Android","Java","Kotlin","Python","C","C++")


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

      val arrayAdapter = ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,lang)
        listview.adapter = arrayAdapter

        //listview on item click listerner show the selected data
        listview.onItemClickListener = AdapterView.OnItemClickListener{adapterView, view, i, l ->
            val selectedData = adapterView.getItemAtPosition(i) as String

            Toast.makeText(this,"$selectedData",Toast.LENGTH_LONG).show();
        }    }
}



Happy Reading 😊

Thank You









Sushmitha N

Hi there ! Im a experienced android developer with 4years of revelant exprience.My Skills include Android,Core Java ,Oops and Kotlin.

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