In this article, we will learn about android ScrollView using Kotlin. We will go through various example that demonstrates how to use different attributes of ScrollView. For example,

In this article, we will get answer to questions like –

• What is ScrollView?
• Why should we consider ScrollView while designing ui for any app?
• What are possibilities using ScrollView while designing ui? etc.

Let’s have a quick demo of things we want to cover in this tutorial –

Output

Tutorialwing Kotlin ScrollView Output

Getting Started

We can define android ScrollView widget as below –

ScrollView is a widget that are used to define vertically scrollable views. It can have only one direct child. So, if you need multiple child views, create a viewGroup as direct child of scrollView. Then, define all the views inside this viewGroup.

Now, how do we use ScrollView in android application ?

Creating New Project

At first, we will create an application.
So, follow steps below to create any android project in Kotlin –

Newbie in Android ?

Some very important concepts (Recommended to learn before you move ahead)

• Install Android Studio
• Create New Project in Android Studio
• Android Project Structure
• Run / Debug / Test Android App

Before we move ahead, we need to setup for viewBinding to access Android ScrollView Using Kotlin file without using findViewById() method.

Setup ViewBinding

Add viewBinding true in app/build.gradle file.

 
 android { 
 	// OTHER CODE... 
 	buildFeatures { 
 		viewBinding true 
 	} 
 } 
 

Now, set content in activity using view binding.
Open MainActivity.kt file and write below code in it.

 
 class MainActivity : AppCompatActivity() { 
 	
 	private lateinit var binding: ActivityMainBinding 
 	
 	override fun onCreate(savedInstanceState: Bundle?) { 
 		super.onCreate(savedInstanceState) 
 		binding = ActivityMainBinding.inflate(layoutInflater) 
 		val view = binding.root 
 		setContentView(view) 
 	} 
 } 
 

Now, we can access view in Kotlin file without using findViewById() method.

Using ScrollView in Kotlin

Follow steps below to use ScrollView in newly created project –

• We need some images, stored in res/drawable folder, to be used in the application. These drawable images will be used by child view of scrollView to create different views.
• Open res/values/strings.xml file. Then, add below code into it.

  <resources>
      <string name="app_name">ScrollView</string>
      <string name="no_image">No Image</string>
  </resources>
  

• Open res/layout/activity_main.xml file. Then, add below code in it –

  <?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">
  
      <ScrollView
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          app:layout_constraintBottom_toBottomOf="parent"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent">
  
          <LinearLayout
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="vertical">
  
              <ImageView
                  android:id="@+id/image1"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginTop="20dp"
                  android:layout_marginBottom="20dp"
                  android:contentDescription="@string/no_image"
                  android:src="@drawable/guava" />
  
              <ImageView
                  android:id="@+id/image2"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginBottom="20dp"
                  android:contentDescription="@string/no_image"
                  android:src="@drawable/jackfruit" />
  
              <ImageView
                  android:id="@+id/image3"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginBottom="20dp"
                  android:contentDescription="@string/no_image"
                  android:src="@drawable/mix_fruit" />
  
              <ImageView
                  android:id="@+id/image4"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginBottom="20dp"
                  android:contentDescription="@string/no_image"
                  android:src="@drawable/pomegranate" />
  
              <ImageView
                  android:id="@+id/image5"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginBottom="20dp"
                  android:contentDescription="@string/no_image"
                  android:src="@drawable/strawberry" />
  
              <ImageView
                  android:id="@+id/image6"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:layout_marginBottom="20dp"
                  android:contentDescription="@string/no_image"
                  android:src="@drawable/zespri_kiwi" />
  
          </LinearLayout>
      </ScrollView>
  
  </androidx.constraintlayout.widget.ConstraintLayout>
  

• We can also access it in Kotlin File, MainActivity.kt, as below –

  package com.tutorialwing.scrollview
  
  import androidx.appcompat.app.AppCompatActivity
  import android.os.Bundle
  import com.tutorialwing.scrollview.databinding.ActivityMainBinding
  
  class MainActivity : AppCompatActivity() {
  
  	private lateinit var binding: ActivityMainBinding
  
  	override fun onCreate(savedInstanceState: Bundle?) {
  		super.onCreate(savedInstanceState)
  		binding = ActivityMainBinding.inflate(layoutInflater)
  		val view = binding.root
  		setContentView(view)
  	}
  
  }
  

Now, run the application. We will get output as below –

Tutorialwing Kotlin ScrollView Output

Different Attributes of ScrollView in XML

Now, we will see how to use different attributes of Android ScrollView using Kotlin to customise it –

Set Id of ScrollView

Many a time, we need id of View to access it in kotlin file or create ui relative to that view in xml file. So, we can set id of ScrollView using android:id attribute like below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        />

Here, we have set id of ScrollView as scrollView_ID using android:id=”” attribute. So, if we need to reference this ScrollView, we need to use this id – scrollView_ID.
Learn to Set ID of ScrollView Dynamically

Set Width of ScrollView

We use android:layout_width=”” attribute to set width of ScrollView.
We can do it as below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        android:layout_width="wrap_content"
        />

Width can be either “MATCH_PARENT” or “WRAP_CONTENT” or any fixed value (like 20dp, 30dp etc.).
Learn to Set Width of ScrollView Dynamically

Set Height of ScrollView

We use android:layout_height=”” attribute to set height of ScrollView.
We can do it as below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

Height can be either “MATCH_PARENT” or “WRAP_CONTENT” or any fixed value.
Learn to Set Height of ScrollView Dynamically

Set Padding of ScrollView

We use android:padding=”” attribute to set padding of ScrollView.
We can do it as below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        />

Here, we have set padding of 10dp in ScrollView using android:padding=”” attribute.
Learn to Set Padding of ScrollView Dynamically

Set Margin of ScrollView

We use android:layout_margin=”” attribute to set margin of ScrollView.
We can do it as below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        />

Here, we have set margin of 10dp in ScrollView using android:layout_margin=”” attribute.
Learn to Set Margin of ScrollView Dynamically

Set Background of ScrollView

We use android:background=”” attribute to set background of ScrollView.
We can do it as below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#ff0000"
        />

Here, we have set background of color #ff0000 in ScrollView using android:background=”” attribute.
Learn to Set Background of ScrollView Dynamically

Set Visibility of ScrollView

We use android:visibility=”” attribute to set visibility of ScrollView.
We can do it as below –

    <ScrollView
        android:id="@+id/scrollView_ID"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
        />

Here, we have set visibility of ScrollView using android:visiblity=”” attribute. Visibility can be of three types – gone, visible and invisible
Learn to Set Visibility of ScrollView Dynamically

Till now, we have see how to use android ScrollView using Kotlin. We have also gone through different attributes of ScrollView to perform certain task. Let’s have a look at list of such attributes and it’s related task.

Different Attributes of Android ScrollView Widget

Below are the various attributes that are used to customise android ScrollView Widget. However, you can check the complete list of attributes of ScrollView in it’s official documentation site. Here, we are going to list some of the important attributes of this widget –

Some of the popular attributes of android scrollView widget are –

Some of the popular attributes of android ScrollView inherited from FrameLayout are –

Some of the popular attributes of ScrollView inherited from ViewGroup are –

Some of the popular attributes of android ScrollView inherited from View are –

We have seen different attributes of ScrollView and how to use it. If you wish to visit post to learn more about it

Thus, we have seen what is ScrollView, how can we use android ScrollView using Kotlin ? etc. We also went through different attributes of android ScrollView.