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Output

Tutorialwing Android Dynamic Horizontal ProgressBar Output
Getting Started
At first, we will create android project. Then, we will create and use android horizontal 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 DynamicHorizontalProgressBar. 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 horizontal 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="match_parent" 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 horizontal progressBar created dynamically in the application. We have also defined a button that will show/hide the button whenever it is clicked.
4. Create Android horizontal progressbar Programmatically / Dynamically in Kotlin
Open app/src/main/java/com.tutorialwing.dynamichorizontalprogressbar/MainActivity.kt file. Then, add below code into it.
package com.tutorialwing.dynamichorizontalprogressbar 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 horizontal progressBar dynamically... val progressBar = ProgressBar(this, null, android.R.attr.progressBarStyleHorizontal) val layoutParams = LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT) layoutParams.setMargins(30, 30, 30, 30) progressBar.layoutParams = layoutParams progressBar.isIndeterminate = true val linearLayout = findViewById<LinearLayout>(R.id.rootContainer) // Add horizontal 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 } } }
In MainActivity.kt file, we have created a horizontal progressbar. Then, we have added this progressBar to linearLayout programmatically. At last, we have set a click listener on button to show/hide horizontal progressbar whenever it is clicked.
Since Manifest file is very important in any android application, we are also going to mention them here.
AndroidManifest.xml file
Code inside src/main/AndroidManifest.xml file is –
<?xml version="1.0" encoding="utf-8"?> <manifest package="com.tutorialwing.dynamichorizontalprogressbar" 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 Horizontal Progressbar Programmatically in Kotlin.