Android Switch

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 Kotlin

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.java file −:

Java:

package com.microappvalley.newtestproject;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.Switch;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    Switch switch1;
    Switch switch2;
    Button submitButton;
    @SuppressLint("MissingInflatedId")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        switch1=findViewById(R.id.switch1);
        switch2=findViewById(R.id.switch2);
        submitButton=findViewById(R.id.buttonSubmit);
        switch1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
               if (switch1.isChecked()){
                   Toast.makeText(MainActivity.this, "switch 1 On", Toast.LENGTH_SHORT).show();
               }else {
                   Toast.makeText(MainActivity.this, "switch 1 Off", Toast.LENGTH_SHORT).show();

               }
            }
        });
        switch2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if (switch2.isChecked()){
                    Toast.makeText(MainActivity.this, "switch 2 On", Toast.LENGTH_SHORT).show();
                }else {
                    Toast.makeText(MainActivity.this, "switch 2 Off", Toast.LENGTH_SHORT).show();

                }
            }
        });
        submitButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               String switch1Data="";
               String switch2Data="";
                if (switch1.isChecked()){
                    switch1Data="Switch 1 On";
                }else {
                    switch1Data="Switch 1 Off";
                }
                if (switch2.isChecked()){
                    switch2Data="Switch 2 On";
                }else {
                    switch2Data="Switch 2 Off";
                }
                Toast.makeText(MainActivity.this, switch1Data+"\n"+switch2Data, 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.