Hello Readers! In this post, we will learn about how to use android seekBar widget. We will also go through different attributes of seekBar that can be used to customise this widget.

Output

Tutorialwing Android Seekbar Output

Getting Started

Android SeekBar can be defined as below –

SeekBar is an extension of progressBar that has a draggable thumb. User can drag this thumb back and forth to set current progress. Placing focusable widgets to left and right of the seekBar is discouraged.

Attributes of Android SeekBar Widget

Some of the popular attributes of android seekBar that can be used to customise this widget are –

Some of the popular attributes of android SeekBar inherited from AbsSeekBar are –

Some of the popular attributes of android SeekBar inherited from ProgressBar are –

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

Example of Android SeekBar Widget

At first, we will create android application. Then, we will use seekBar widget in this application.

1. Creating New Project

Follow the steps below to create new project. Please ignore the steps if you have already created an application.

Now, we will modify xml and java file to use seekBar widget in the project.

2. Modify Values folder

Open res/values/strings.xml file. Then, add below code into it.

<resources>
	<string name="app_name">SeekBar</string>
</resources>

3. Use SeekBar Widget in xml file

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">

	<SeekBar
		android:id="@+id/seekBar"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:layout_margin="10dp"/>

</LinearLayout>

In activity_main.xml file, we have used seekBar widget. Now, we will access this seekBar into java file. Also, we will show a toast message that displays current progress of the seekBar.

4. Access SeekBar Widget in java file

Open src/main/java/com.tutorialwing.seekbar/MainActivity.java file. Then, add below code into it.

package com.tutorialwing.seekbar;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.SeekBar;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		SeekBar seekBar = findViewById(R.id.seekBar);
		if (seekBar != null) {
			seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
				@Override
				public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
					// Write code to perform some action when progress is changed.
				}

				@Override
				public void onStartTrackingTouch(SeekBar seekBar) {
					// Write code to perform some action when touch is started.
				}

				@Override
				public void onStopTrackingTouch(SeekBar seekBar) {
					// Write code to perform some action when touch is stopped.
					Toast.makeText(MainActivity.this, "Progress is " + seekBar.getProgress() + "%", Toast.LENGTH_SHORT).show();
				}
			});
		}
	}
}

In MainActivity.java, We have accessed SeekBar widget. Also, we are showing a toast message whenever thumb is moved back and forth that displays current progress of the seekBar.

AndroidManifest.xml

Code inside src/main/AndroidManifest.xml file is as below –

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.tutorialwing.seekbar"
		  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 you run the program, you will get output as shown above.

That’s end of tutorial on Android SeekBar Widget.