ToggleButton in Kotlin

ToggleButton works similarly to a switch, with two states: ON or OFF, represented by the boolean values true and false, respectively. ToggleButton, unlike switch, does not offer a slider interface, so we cannot slide to change states. It is exactly like a button. In this tutorial, we will go over how to develop a ToggleButton in Kotlin of Mobile application.

Anroid ToggleButton XML Attributes
  • id : The id assigned to the toggle button
  • textOff: The text is shown on the button when it is not checked.
  • texton: The text is shown on the button when it is checked.
  • disabledAlpha: The alpha to apply to the when disabled.
Syntax
ToggleButton XML:
 <ToggleButton
    android:id="@+id/toggleButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />
ToggleButton kt file :
   val toggle: ToggleButton = findViewById(R.id.toggleButton)
        toggle.setOnCheckedChangeListener { _, isChecked ->
            Toast.makeText(this, if(isChecked) " ON" else "OFF", Toast.LENGTH_SHORT).show()
        }


Create a new project in Android studio
  1. To create a new project in Android studio follow these steps:
  2. Click on file and select the option like open project or create new project.
  3. Click new project and select "empty activity"  , select the Kotlin option.
 Adding below code in main_activity.xml of project 
 <?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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity2">
    <ToggleButton
        android:id="@+id/toggleButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

 </androidx.constraintlayout.widget.ConstraintLayout>
 Adding below code in MainActivity.kt of project 
 import android.os.Bundle
 import android.widget.Toast
 import android.widget.ToggleButton
 import androidx.appcompat.app.AppCompatActivity

 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main2)
        val toggle: ToggleButton = findViewById(R.id.toggleButton)
        toggle.setOnCheckedChangeListener { _, isChecked ->
            Toast.makeText(
                this,
                if (isChecked) " Mode ON" else " Mode OFF",
                Toast.LENGTH_SHORT
            ).show()
         }
     }
 }
Output of above example 

                                                     


Happy coding!

365Bloggy July 2, 2024
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