How to Set a Seek Bar in Android

Introduction

 

Hi guys. Today I explain how to work with the seek bar in Android. To demonstrate how it is used to set the Media Player, Ringer, Alarm, and Notification volume for your device. So you can easily understand using the following instructions.

 

Step 1

 

As usual, create a new project file as in the following.

 

 

Step 2

 

Open the "activity_main.xml" file and update it with the following code:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Adjust Media player volume"
        android:textAppearance="?android:attr/textAppearanceLarge" android:padding="10px"/>
    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />
    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Adjust Ringer volume"
        android:textAppearance="?android:attr/textAppearanceLarge" android:padding="10px" />
    <SeekBar
        android:id="@+id/seekBar2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Adjust Alarm volume"
        android:textAppearance="?android:attr/textAppearanceLarge" android:padding="10px"/>
    <SeekBar
        android:id="@+id/seekBar3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Adjust Notification volume"
        android:textAppearance="?android:attr/textAppearanceLarge" android:padding="10px"/>
    <SeekBar
        android:id="@+id/seekBar4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

Step 3

 

Open the "MainActivity.java" file and update it with the following code:

package com.example.androidfourthapp;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
      @Override
      protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
      }
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.main, menu);
            return true;
      }
}

Step 4

 

Now create a new Java file named "SeekBarExampleAcitivity.java" with the following code:

package com.example.androidfourthapp;
import android.app.Activity;
import android.content.Context;
import android.media.AudioManager;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
public class SeekBarExampleAcitvity extends Activity{
      private SeekBar mediaVlmSeekBar = null;
      private SeekBar ringerVlmSeekBar = null;
      private SeekBar alarmVlmSeekBar = null;
      private SeekBar notifyVlmSeekBar = null;
      private AudioManager audioManager = null;
      @Override
      protected void onCreate(Bundle savedInstanceState) {
            // TODO Auto-generated method stub
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
            this.setVolumeControlStream(AudioManager.STREAM_RING);
            this.setVolumeControlStream(AudioManager.STREAM_ALARM);
            this.setVolumeControlStream(AudioManager.STREAM_NOTIFICATION);
            initControls();
      }
      private void initControls() {
            //Return the handle to a system-level service - 'AUDIO'.
            audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            //Find the seekbar 1
            mediaVlmSeekBar = (SeekBar) findViewById(R.id.seekBar1);
            //Set the max range(Volume in this case) of seekbar
            //for Media player volume
            mediaVlmSeekBar.setMax(audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_MUSIC));
            //Set the progress with current Media Volume
            mediaVlmSeekBar.setProgress(audioManager
                    .getStreamVolume(AudioManager.STREAM_MUSIC));
            //Find the seekbar 2
            ringerVlmSeekBar = (SeekBar) findViewById(R.id.seekBar2);
            //Set the max range(Volume in this case) of seekbar
            //for Phone ringer volume
            ringerVlmSeekBar.setMax(audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_RING));
            //Set the progress with current Ringer Volume
            ringerVlmSeekBar.setProgress(audioManager
                    .getStreamVolume(AudioManager.STREAM_RING));
            //Find the seekbar 3
            alarmVlmSeekBar = (SeekBar) findViewById(R.id.seekBar3);
            //Set the max range(Volume in this case) of seekbar
            //for Alarm volume
            alarmVlmSeekBar.setMax(audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_ALARM));
            //Set the progress with current Alarm Volume
            alarmVlmSeekBar.setProgress(audioManager
                    .getStreamVolume(AudioManager.STREAM_ALARM));
            //Find the seekbar 4
            notifyVlmSeekBar = (SeekBar) findViewById(R.id.seekBar4);
            //Set the max range(Volume in this case) of seekbar
            //for Notification volume
            notifyVlmSeekBar.setMax(audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_NOTIFICATION));
            //Set the progress with current Notification Volume
            notifyVlmSeekBar.setProgress(audioManager
                    .getStreamVolume(AudioManager.STREAM_NOTIFICATION));
            try {
                //Listener to receive changes to the SeekBar1's progress level
                mediaVlmSeekBar
                    .setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
                public void onStopTrackingTouch(SeekBar arg0) {
                    }
                public void onStartTrackingTouch(SeekBar arg0) {
                    }
                //When progress level of seekbar1 is changed
                public void onProgressChanged(SeekBar arg0,
                    int progress, boolean arg2) {
                audioManager.setStreamVolume(
                    AudioManager.STREAM_MUSIC, progress, 0);
                }
             });
               ringerVlmSeekBar
                     .setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
               public void onStopTrackingTouch(SeekBar arg0) {
                    }
               public void onStartTrackingTouch(SeekBar arg0) {
                    }
               //When progress level of seekbar2 is changed
               public void onProgressChanged(SeekBar arg0,
                    int progress, boolean arg2) {
                audioManager.setStreamVolume(
                    AudioManager.STREAM_RING, progress, 0);
                 }
             });
               alarmVlmSeekBar
                    .setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
               public void onStopTrackingTouch(SeekBar arg0) {
                    }
               public void onStartTrackingTouch(SeekBar arg0) {
                    }
               //When progress level of seekbar3 is changed
               public void onProgressChanged(SeekBar arg0,
                    int progress, boolean arg2) {
                 audioManager.setStreamVolume(
                        AudioManager.STREAM_ALARM, progress, 0);
                }
             });
               //Listener to receive changes to the SeekBar4's progress level
               notifyVlmSeekBar
                    .setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
               public void onStopTrackingTouch(SeekBar arg0) {
                    }

               public void onStartTrackingTouch(SeekBar arg0) {
                    }
               //When progress level of seekbar4 is changed
               public void onProgressChanged(SeekBar arg0,
                        int progress, boolean arg2) {
                 audioManager.setStreamVolume(
                    AudioManager.STREAM_NOTIFICATION, progress,0);
                }
             });
            } catch (Exception e) {
                e.printStackTrace();
            }
            }
}

Step 5

 

See the output.