Android Switch Kotlin

In Android, you can use the Switch widget to create an ON/OFF toggle button. Here's a basic example of how you can implement a Switch button in an Android application:

Here is the tutorial for Java

There Are Some Common Attributes for TextView:

Step 1:

File open res/layout/activity_main.xml file −

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


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_margin="20dp"
        android:orientation="vertical">

        <Switch
            android:id="@+id/switch1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textOn="On"
            android:checked="true"
            android:textOff="Off"
            android:text="Switch" />

        <Switch
            android:id="@+id/switch2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textOn="On"
            android:textOff="Off"
            android:checked="true"
            android:text="Switch" />

        <Button
            android:id="@+id/buttonSubmit"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Submit" />

    </LinearLayout>
</RelativeLayout>

Step2 :

File open com.microappvalley.newtestproject/MainActivity.kt file −:

package com.microappvalley.newtestproject

import android.annotation.SuppressLint
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.Switch
import android.widget.Toast

class MainActivity : AppCompatActivity() {
    @SuppressLint("MissingInflatedId")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val  switch1:Switch=findViewById(R.id.switch1)
        val  switch2:Switch=findViewById(R.id.switch2)
        val  buttonSubmit:Button=findViewById(R.id.buttonSubmit)


        switch1.setOnCheckedChangeListener { buttonView, isChecked ->
            if (isChecked){
                Toast.makeText(this@MainActivity, "Switch1 Button ON", Toast.LENGTH_SHORT).show()
            }else{
                Toast.makeText(this@MainActivity, "Switch1 Button OFF", Toast.LENGTH_SHORT).show()
            }
        }

        switch2.setOnCheckedChangeListener { buttonView, isChecked ->
            if (isChecked){
                Toast.makeText(this@MainActivity, "Switch2 Button ON", Toast.LENGTH_SHORT).show()
            }else{
                Toast.makeText(this@MainActivity, "Switch3 Button OFF", Toast.LENGTH_SHORT).show()
            }
        }

        buttonSubmit.setOnClickListener {

            var switch1String=""
            var switch2String=""
            if (switch1.isChecked){
                switch1String="Switch 1 ON"
            }else{
                switch1String="Switch 1 OFF"
            }

            if (switch2.isChecked){
                switch2String="Switch 2 ON"
            }else{
                switch2String="Switch 2 OFF"
            }

            Toast.makeText(this@MainActivity,switch1String+"\n"+switch2String,Toast.LENGTH_SHORT).show()

        }
    }
}

Open Device Manager, run the emulator, and then run the application. Next, check the working output and check the output you declared in your code.