Greetings!
We have recently published 100+ articles on android tutorials with kotlin and java. If you need, you may visit Android Tutorial for beginners page. You can also check Kotlin Tutorial for beginners. Also, if you are interested in content writing, you can mail us at tutorialwing@gmail.com.Hello Readers! In this post, we are going to learn about how to use android seekBar programmatically in kotlin file in any android application. We will also learn how to add seekBar into linearLayout programmatically in any application.
Output

Tutorialwing Android Dynamic SeekBar Output
Getting Started
At first, we will create android project. Then, we will create and use seekBar programmatically in kotlin file.
1. Creating New Project in Kotlin
Follow the steps below to create new project. Please ignore the steps if you have already created a new project.
Step | Description |
---|---|
1. | Open Android Studio. |
2. | Go to File => New => New Project. Write application name as DynamicSeekBar. Then, check Include Kotlin Support and click next button. |
3. | Select minimum SDK you need. However, we have selected 17 as minimum SDK. Then, click next button |
4. | Then, select Empty Activity => click next => click finish. |
5. | At this point, You will get a newly created android project successfully. |
Now, we will modify xml and other files to use seekBar programmatically in kotlin file.
2. Modify Values Folder
No values folder have been modified. So, we are not going to mention them here.
3. Modify Layout Folder
Open res/layout/activity_main.xml file. Then, add below code into it.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:id="@+id/rootContainer" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:orientation="vertical"> </LinearLayout>
In activity_main.xml file, we have defined a linearLayout, with id rootContainer, that will act as container for the seekBar created programmatically in the application.
4. Create Android SeekBar Programmatically / Dynamically in Kotlin
Open app/src/main/java/com.tutorialwing.dynamicseekbar/MainActivity.kt file. Then, add below code into it.
package com.tutorialwing.dynamicseekbar import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.view.ViewGroup import android.widget.LinearLayout import android.widget.SeekBar import android.widget.Toast class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val seekBar = SeekBar(this) val layoutParams = LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT) layoutParams.setMargins(30, 30, 30, 30) seekBar.layoutParams = layoutParams val linearLayout = findViewById<LinearLayout>(R.id.rootContainer) // Add SeekBar to LinearLayout linearLayout?.addView(seekBar) seekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener { override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) { // Write code to perform some action when progress is changed. } override fun onStartTrackingTouch(seekBar: SeekBar) { // Write code to perform some action when touch is started. } override fun onStopTrackingTouch(seekBar: SeekBar) { // Write code to perform some action when touch is stopped. Toast.makeText(this@MainActivity, "Progress is " + seekBar.progress + "%", Toast.LENGTH_SHORT).show() } }) } }
In MainActivity.kt file, we have created a seekBar widget programmatically. Then, we have added this seekbar widget into linearLayout, having id rootContainer. At last, we have set a listener to show a toast message whenever there is a change in progress of the seekbar i.e. position of the thumb of the seekBar.
Since AndroidManifest file is very important in any application, we are also going to see the content inside this file.
AndroidManifest.xml file
Code inside src/main/AndroidManifest.xml file is –
<?xml version="1.0" encoding="utf-8"?> <manifest package="com.tutorialwing.dynamicseekbar" xmlns:android="http://schemas.android.com/apk/res/android"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> </application> </manifest>
When we run the program, we will get output as shown above.
That’s end of our tutorial on Creating Android SeekBar Programmatically in Kotlin.