kotlin toast example

 kotlin toast example

In the code above, we first obtain the context of the application. This is necessary because a Toast message needs to be displayed within the context of an Activity or Service.

val context = applicationContext

val message = "Hello, world!"

val duration = Toast.LENGTH_SHORT

val toast = Toast.makeText(context, message, duration)

toast.show()

Full Example kotlin toast 

activity_main.xml:

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

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.tutorialkart.myapplication.ToastActivity">

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:gravity="center"

        android:padding="25dp"

        android:orientation="horizontal">

        <Button

            android:id="@+id/btn_click_me"

            android:background="@drawable/btn_round_edge"

            android:text="Click me for Toast"

            android:textAllCaps="false"

            android:padding="10dp"

            android:textSize="25dp"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content" />

    </LinearLayout>

</android.support.constraint.ConstraintLayout>

2.MainActivity.Kt:

import android.support.v7.app.AppCompatActivity

import android.os.Bundle

import android.widget.Button

import android.widget.Toast

 

class MainActivity : AppCompatActivity() {

 

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_toast)

 

        var btn_click_me = findViewById(R.id.btn_click_me) as Button

 

        btn_click_me.setOnClickListener {

            // make a toast on button click event

            Toast.makeText(this, "Hi there! This is a Toast.", Toast.LENGTH_LONG).show()

        }

    }

}