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 how to create an android progressBar programmatically in kotlin. We will also learn how to add progressBar into linearLayout programmatically in any android application.
Output

Tutorialwing Android Dynamic ProgressBar Output
Getting Started
At first, we will create android project. Then, we will create and use progressBar 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 DynamicProgressBar. 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 kotlin file to use progressbar dynamically.
2. Modify Values Folder
No values folders 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 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 android:id="@+id/rootContainer" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> </LinearLayout> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="HIDE PROGRESSBAR"/> </LinearLayout>
In activity_main.xml file, we have defined a linearLayout, with id rootContainer, that will act as container for the progressBar created dynamically in the application. We have also defined a button that will cause the progressBar to show/hide whenever it is clicked.
4. Create Android ProgressBar Programmatically / Dynamically in Kotlin
Open app/src/main/java/com.tutorialwing.dynamicprogressbar/MainActivity.kt file. Then, add below code into it.
package com.tutorialwing.dynamicprogressbar import android.os.Bundle import android.support.v7.app.AppCompatActivity import android.view.View import android.view.ViewGroup import android.widget.Button import android.widget.LinearLayout import android.widget.ProgressBar class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) // Create progressBar dynamically... val progressBar = ProgressBar(this) progressBar.layoutParams = LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT) val linearLayout = findViewById<LinearLayout>(R.id.rootContainer) // Add ProgressBar to LinearLayout linearLayout?.addView(progressBar) val btn = findViewById<Button>(R.id.button) btn?.setOnClickListener { val visibility = if (progressBar.visibility == View.GONE) View.VISIBLE else View.GONE progressBar.visibility = visibility val btnText = if (progressBar.visibility == View.GONE) "SHOW PROGRESSBAR" else "HIDE PROGRESSBAR" btn.text = btnText } } }
Here, we have created a progressBar programmatically in kotlin file (in MainActivity.kt file). After that, we have added this widget into linearLayout. Then, we have set a click listener to show/hide progressBar added in linearLayout.
Since AndroidManifest.xml file is very important in any android 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.dynamicprogressbar" 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 ProgressBar Programmatically in Kotlin.