Alert Dialog in Kotlin

 Alert Dialog in Kotlin

activity_alert_dialog_example.xml

This activity activity_alert_dialog_example.xml we are creating a button which on click will display the alert dialog

<?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=".AlertDialogExample"

 android:orientation="vertical">

    <Button           

      android:layout_width="match_parent"     

      android:layout_height="wrap_content"   

      android:id="@+id/alertButton"

      android:text="Alert Dialog Example"/>

</LinearLayout>

AlertDialogExample.kt

AlertDialogExample.kt file we are intiallizing the button which on click displays alert dialog which contains title, message ,icon and buttons which perform there respective actions

package com.example.kotlinsampleproject

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.support.v7.app.AlertDialog
import android.widget.Button
import android.widget.Toast

class AlertDialogExample : AppCompatActivity() {

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


        val button = findViewById<Button>(R.id.alertButton)

        //on button click alert dialog will be displayed
        button.setOnClickListener {
            val builder = AlertDialog.Builder(this)

            // set title for alert dialog        

    builder.setTitle("Welcome to SDK Book")

            //set message for alert dialog        

    builder.setMessage("Are you happy with the content...?")

            //set icon for alert dialog          

  builder.setIcon(R.drawable.logo)

            //postive action button in alert dialog         

   builder.setPositiveButton("Yes"){dialogInterface, i ->    

            Toast.makeText(this,"You have clicked on Yes...!Thanks",Toast.LENGTH_LONG).show()
            }

            //negative action button in alert dialog
            builder.setNegativeButton("No"){dialogInterface, i ->    

            Toast.makeText(this,"You have clicked on No...!Sad",Toast.LENGTH_LONG).show()
            }
            //netural action button in alert dialog        

    builder.setNeutralButton("Cancel"){dialogInterface, i ->        

        Toast.makeText(this,"You have clicked on Cancel...!Thanks",Toast.LENGTH_LONG).show()
            }
            //Create the Alert Dialog        

    val alerDialog :AlertDialog = builder.create()

            //dismiss alert dialog when clicked on screen      

      alerDialog.setCancelable(false)
            alerDialog.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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