kotlin spinner example

kotlin spinner example

In this article today learn kotlin spinner example. Follow the kotlin spinner app method

var languages = arrayOf("Android", "Java", "C#", "Html", "Php", "javascipt")

 

val aa = ArrayAdapter(this, android.R.layout.simple_spinner_item, languages)

    // Set layout to use when the list of choices appear

    aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)

    // Set Adapter to Spinner

    spinner!!.setAdapter(aa)



}



override fun onItemSelected(arg0: AdapterView<*>, arg1: View, position: Int, id: Long) {

    textView_msg!!.text = "Selected : "+languages[position]

}

 

 

follow the full source code kotlin spinner example

1.MainActivity.kt:

package com.akash.koltinspinner

import android.os.Bundle

import kotlinx.android.synthetic.main.activity_main.*

import android.view.View

import android.widget.*

import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity(),AdapterView.OnItemSelectedListener {

    var languages = arrayOf("Android", "Java", "C#", "Html", "Php", "javascipt")

    var spinner:Spinner? = null

    var textView_msg:TextView? = null

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_main)

        textView_msg = this.msg

        spinner = this.spinner_sample

        spinner!!.setOnItemSelectedListener(this)

        // Create an ArrayAdapter using a simple spinner layout and languages array

        val aa = ArrayAdapter(this, android.R.layout.simple_spinner_item, languages)

        // Set layout to use when the list of choices appear

        aa.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)

        // Set Adapter to Spinner

        spinner!!.setAdapter(aa)

    }

    override fun onItemSelected(arg0: AdapterView<*>, arg1: View, position: Int, id: Long) {

        textView_msg!!.text = "Selected : "+languages[position]

    }

    override fun onNothingSelected(arg0: AdapterView<*>) {

    }

}

2.activity_main.xml:

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

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:gravity="center"

    android:orientation="vertical"

    tools:context=".MainActivity">

    <TextView

        android:id="@+id/msg"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="25dp"

        android:padding="20dp"/>

    <Spinner

        android:id="@+id/spinner_sample"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"/>

</LinearLayout>