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How To Make a Circle Custom Progress Bar in Android using Kotlin?
This example demonstrates how To Make a Circle Custom Progress Bar in Android using Kotlin.
Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
Example
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_marginTop="50dp" android:text="Tutorials Point" android:textAlignment="center" android:textColor="@android:color/holo_green_dark" android:textSize="32sp" android:textStyle="bold" />
Step 3 − Add the following code to src/MainActivity.kt
import android.content.res.Resources
import android.graphics.drawable.Drawable
import android.os.Bundle
import android.os.Handler
import android.widget.ProgressBar
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
var status = 0
private val handler: Handler = Handler()
lateinit var textView: TextView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
title = "KotlinApp"
val resources: Resources = resources
val drawable: Drawable = resources.getDrawable(R.drawable.circularprogressbar)
val progressBar: ProgressBar = findViewById(R.id.circularProgressbar)
progressBar.progress = 0
progressBar.secondaryProgress = 100
progressBar.max = 100
progressBar.progressDrawable = drawable
textView = findViewById(R.id.textView)
Thread(Runnable {
while (status < 100) {
status += 1
handler.post {
progressBar.progress = status
textView.text = String.format("%d%%", status)
}
try {
Thread.sleep(16)
} catch (e: InterruptedException) {
e.printStackTrace()
}
}
}).start()
}
}Step 4 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.q11"> <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>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run icon
from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen
Click here to download the project code.
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