In this post, you will learn about the ToggleButton in android. You will learn what a toggle button is and how to use it in an android app.
What is the ToggleButton in android?
A ToggleButton in Android is a button that can be either ON or OFF i.e; a ToggleButton has two states – ON and OFF. You can toggle between the two states by tapping on the button. ToggleButton is often used in app settings where the user can enable or disable certain features. For example, suppose you are building an application that needs to provide a “night mode” setting. In that case, you could use a ToggleButton. When the ToggleButton is in the “on” state, the night mode setting would be activated, and when in the “off” state, the night mode setting would be disabled. The ToggleButton is displayed in its original form when it is off. When the ToggleButton is active, the button is displayed in another form.
Android 4.0 (API level 14) introduces switch that is an another kind of toggle button that provides a slider control.
Now, let me show you a visual example of the ToggleButton.
Now, let’s see the code to create the ToggleButton in android. I will share with you a simple app that contains a toggle button. When I tap on the toggle button it shows a toast message.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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=".MainActivity">
<ToggleButton
android:id="@+id/toggleButton"
android:layout_width="169dp"
android:layout_height="66dp"
android:layout_marginTop="364dp"
android:text="ToggleButton"
android:textSize="36sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.549"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.example.togglebutton_example;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.Toast;
import android.widget.ToggleButton;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ToggleButton toggleButton=(ToggleButton)findViewById(R.id.toggleButton);
toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean isToggleChecked) {
if(isToggleChecked){
Toast.makeText(MainActivity.this, "You just turned on the toggle button", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(MainActivity.this, "You just turned off the toggle button", Toast.LENGTH_SHORT).show();
}
}
});
}
}
Output:
That’s it for this post.
Goodbye.
DeveloperXon 
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