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Android Media Player


MediaPlayer is a class that is used to control the playback of audio/video files and streams.
The android.media.MediaPlayer class is used to control the audio or video files. It accesses the built-in media player services such as playing audio, video, etc. To use the MediaPlayer class, we have to call the create the instance of it by calling the create() method of this class.


Methods of MediaPlayer class


There are several methods of MediaPlayer class available. Some of them are as follows:


Method Description
public void setDataSource(String path)

It sets the data source (file path or http url) to use.
public void prepare()

It prepares the player for playback synchronously.
public void start()

It starts or resumes the playback.
public void stop()

It stops the playback.
public void pause()

It pauses the playback.
public boolean isPlaying()

It checks if the media player is playing.
public void seekTo(int millis)

It seeks to specified time in milliseconds.
public void setLooping(boolean looping)

It sets the player for looping or non-looping.
public boolean isLooping()

It checks if the player is looping or non-looping.
public void selectTrack(int index)

It selects a track for the specified index.
public int getCurrentPosition()

It returns the current playback position.
public int getDuration()

It returns duration of the file.
public void setVolume(float leftVolume,float rightVolume)

It sets the volume on this player.

Example of Android MediaPlayer with SeekBar


In this example, we will create a Media Player with playback control functionality such as play, pause, and stop. We also integrate the SeekBar to show the progress level of the media player.


activity_main.xml


In the activity_main.xml layout file, we add the Buttons to control media playback, TextView to display the time duration of song and SeekBar to show the progress level of the media file.


< ?xml version="1.0" encoding="utf-8"?>  
< android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:app="http://schemas.android.com/apk/res-auto"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    tools:context="example.javatpoint.com.kotlinmediaplayer.MainActivity">  
  
    < Button  
        android:id="@+id/pauseBtn"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="8dp"  
        android:layout_marginEnd="8dp"  
        android:layout_marginStart="8dp"  
        android:layout_marginTop="8dp"  
        android:enabled="false"  
        android:text="Pause"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintEnd_toStartOf="@+id/playBtn"  
        app:layout_constraintStart_toStartOf="parent"  
        app:layout_constraintTop_toTopOf="parent" />  
  
    < Button  
        android:id="@+id/playBtn"  
        android:layout_width="88dp"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="8dp"  
        android:layout_marginEnd="8dp"  
        android:layout_marginStart="8dp"  
        android:layout_marginTop="8dp"  
        android:text="Play"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintEnd_toStartOf="@+id/stopBtn"  
        app:layout_constraintStart_toEndOf="@+id/pauseBtn"  
        app:layout_constraintTop_toTopOf="parent" />  
  
    < Button  
        android:id="@+id/stopBtn"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="8dp"  
        android:layout_marginEnd="24dp"  
        android:layout_marginRight="24dp"  
        android:layout_marginTop="8dp"  
        android:enabled="false"  
        android:text="Stop"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintEnd_toEndOf="parent"  
        app:layout_constraintTop_toTopOf="parent" />  
  
    < RelativeLayout  
        android:layout_width="368dp"  
        android:layout_height="wrap_content"  
        android:layout_marginEnd="8dp"  
        android:layout_marginStart="8dp"  
        android:layout_marginTop="76dp"  
        app:layout_constraintEnd_toEndOf="parent"  
        app:layout_constraintHorizontal_bias="1.0"  
        app:layout_constraintStart_toStartOf="parent"  
        app:layout_constraintTop_toTopOf="parent">  
  
        < TextView  
            android:id="@+id/tv_pass"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content" />  
  
        < TextView  
            android:id="@+id/tv_due"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_alignParentEnd="true"  
            android:layout_alignParentRight="true" />  
  
        < SeekBar  
            android:id="@+id/seek_bar"  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:layout_below="@id/tv_pass"  
            android:saveEnabled="false" />  
    < /RelativeLayout>  
< /android.support.constraint.ConstraintLayout>  
< ?xml version="1.0" encoding="utf-8"?>  
< android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:app="http://schemas.android.com/apk/res-auto"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    tools:context="example.javatpoint.com.kotlinmediaplayer.MainActivity">  
  
    < Button  
        android:id="@+id/pauseBtn"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="8dp"  
        android:layout_marginEnd="8dp"  
        android:layout_marginStart="8dp"  
        android:layout_marginTop="8dp"  
        android:enabled="false"  
        android:text="Pause"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintEnd_toStartOf="@+id/playBtn"  
        app:layout_constraintStart_toStartOf="parent"  
        app:layout_constraintTop_toTopOf="parent" />  
  
    < Button  
        android:id="@+id/playBtn"  
        android:layout_width="88dp"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="8dp"  
        android:layout_marginEnd="8dp"  
        android:layout_marginStart="8dp"  
        android:layout_marginTop="8dp"  
        android:text="Play"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintEnd_toStartOf="@+id/stopBtn"  
        app:layout_constraintStart_toEndOf="@+id/pauseBtn"  
        app:layout_constraintTop_toTopOf="parent" />  
  
    < Button  
        android:id="@+id/stopBtn"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_marginBottom="8dp"  
        android:layout_marginEnd="24dp"  
        android:layout_marginRight="24dp"  
        android:layout_marginTop="8dp"  
        android:enabled="false"  
        android:text="Stop"  
        app:layout_constraintBottom_toBottomOf="parent"  
        app:layout_constraintEnd_toEndOf="parent"  
        app:layout_constraintTop_toTopOf="parent" />  
  
    < RelativeLayout  
        android:layout_width="368dp"  
        android:layout_height="wrap_content"  
        android:layout_marginEnd="8dp"  
        android:layout_marginStart="8dp"  
        android:layout_marginTop="76dp"  
        app:layout_constraintEnd_toEndOf="parent"  
        app:layout_constraintHorizontal_bias="1.0"  
        app:layout_constraintStart_toStartOf="parent"  
        app:layout_constraintTop_toTopOf="parent">  
  
        < TextView  
            android:id="@+id/tv_pass"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content" />  
  
        < TextView  
            android:id="@+id/tv_due"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content"  
            android:layout_alignParentEnd="true"  
            android:layout_alignParentRight="true" />  
  
        < SeekBar  
            android:id="@+id/seek_bar"  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:layout_below="@id/tv_pass"  
            android:saveEnabled="false" />  
    < /RelativeLayout>  
< /android.support.constraint.ConstraintLayout>

MianActivity.kt


The instance of MediaPlayer class is created using the MediaPlayer.create() method. In this example, we are reading the media file from the raw directory. The MediaPlayer.start() method starts playing media file, MediaPlayer.pause() method pause media and Media.stop() method stops playing media file.


package example.javatpoint.com.kotlinmediaplayer  
  
import android.media.MediaPlayer  
import android.support.v7.app.AppCompatActivity  
import android.os.Bundle  
import android.widget.Toast  
import kotlinx.android.synthetic.main.activity_main.*  
import android.os.Handler  
import android.widget.SeekBar  
  
class MainActivity : AppCompatActivity() {  
  
    private lateinit var mediaPlayer: MediaPlayer  
    private lateinit var runnable:Runnable  
    private var handler: Handler = Handler()  
    private var pause:Boolean = false  
    override fun onCreate(savedInstanceState: Bundle?) {  
        super.onCreate(savedInstanceState)  
        setContentView(R.layout.activity_main)  
  
        // Start the media player  
        playBtn.setOnClickListener{  
            if(pause){  
                mediaPlayer.seekTo(mediaPlayer.currentPosition)  
                mediaPlayer.start()  
                pause = false  
                Toast.makeText(this,"media playing",Toast.LENGTH_SHORT).show()  
            }else{  
  
                mediaPlayer = MediaPlayer.create(applicationContext,R.raw.school_bell)  
                mediaPlayer.start()  
                Toast.makeText(this,"media playing",Toast.LENGTH_SHORT).show()  
  
            }  
            initializeSeekBar()  
            playBtn.isEnabled = false  
            pauseBtn.isEnabled = true  
            stopBtn.isEnabled = true  
  
            mediaPlayer.setOnCompletionListener {  
                playBtn.isEnabled = true  
                pauseBtn.isEnabled = false  
                stopBtn.isEnabled = false  
                Toast.makeText(this,"end",Toast.LENGTH_SHORT).show()  
            }  
        }  
        // Pause the media player  
        pauseBtn.setOnClickListener {  
            if(mediaPlayer.isPlaying){  
                mediaPlayer.pause()  
                pause = true  
                playBtn.isEnabled = true  
                pauseBtn.isEnabled = false  
                stopBtn.isEnabled = true  
                Toast.makeText(this,"media pause",Toast.LENGTH_SHORT).show()  
            }  
        }  
        // Stop the media player  
        stopBtn.setOnClickListener{  
            if(mediaPlayer.isPlaying || pause.equals(true)){  
                pause = false  
                seek_bar.setProgress(0)  
                mediaPlayer.stop()  
                mediaPlayer.reset()  
                mediaPlayer.release()  
                handler.removeCallbacks(runnable)  
  
                playBtn.isEnabled = true  
                pauseBtn.isEnabled = false  
                stopBtn.isEnabled = false  
                tv_pass.text = ""  
                tv_due.text = ""  
                Toast.makeText(this,"media stop",Toast.LENGTH_SHORT).show()  
            }  
        }  
        // Seek bar change listener  
        seek_bar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {  
            override fun onProgressChanged(seekBar: SeekBar, i: Int, b: Boolean) {  
                if (b) {  
                    mediaPlayer.seekTo(i * 1000)  
                }  
            }  
  
            override fun onStartTrackingTouch(seekBar: SeekBar) {  
            }  
  
            override fun onStopTrackingTouch(seekBar: SeekBar) {  
            }  
        })  
    }  
    // Method to initialize seek bar and audio stats  
    private fun initializeSeekBar() {  
        seek_bar.max = mediaPlayer.seconds  
  
        runnable = Runnable {  
            seek_bar.progress = mediaPlayer.currentSeconds  
  
            tv_pass.text = "${mediaPlayer.currentSeconds} sec"  
            val diff = mediaPlayer.seconds - mediaPlayer.currentSeconds  
            tv_due.text = "$diff sec"  
  
            handler.postDelayed(runnable, 1000)  
        }  
        handler.postDelayed(runnable, 1000)  
    }  
}  
// Creating an extension property to get the media player time duration in seconds  
val MediaPlayer.seconds:Int  
    get() {  
        return this.duration / 1000  
    }  
// Creating an extension property to get media player current position in seconds  
val MediaPlayer.currentSeconds:Int  
    get() {  
        return this.currentPosition/1000  
    }  
package example.javatpoint.com.kotlinmediaplayer  
  
import android.media.MediaPlayer  
import android.support.v7.app.AppCompatActivity  
import android.os.Bundle  
import android.widget.Toast  
import kotlinx.android.synthetic.main.activity_main.*  
import android.os.Handler  
import android.widget.SeekBar  
  
class MainActivity : AppCompatActivity() {  
  
    private lateinit var mediaPlayer: MediaPlayer  
    private lateinit var runnable:Runnable  
    private var handler: Handler = Handler()  
    private var pause:Boolean = false  
    override fun onCreate(savedInstanceState: Bundle?) {  
        super.onCreate(savedInstanceState)  
        setContentView(R.layout.activity_main)  
  
        // Start the media player  
        playBtn.setOnClickListener{  
            if(pause){  
                mediaPlayer.seekTo(mediaPlayer.currentPosition)  
                mediaPlayer.start()  
                pause = false  
                Toast.makeText(this,"media playing",Toast.LENGTH_SHORT).show()  
            }else{  
  
                mediaPlayer = MediaPlayer.create(applicationContext,R.raw.school_bell)  
                mediaPlayer.start()  
                Toast.makeText(this,"media playing",Toast.LENGTH_SHORT).show()  
  
            }  
            initializeSeekBar()  
            playBtn.isEnabled = false  
            pauseBtn.isEnabled = true  
            stopBtn.isEnabled = true  
  
            mediaPlayer.setOnCompletionListener {  
                playBtn.isEnabled = true  
                pauseBtn.isEnabled = false  
                stopBtn.isEnabled = false  
                Toast.makeText(this,"end",Toast.LENGTH_SHORT).show()  
            }  
        }  
        // Pause the media player  
        pauseBtn.setOnClickListener {  
            if(mediaPlayer.isPlaying){  
                mediaPlayer.pause()  
                pause = true  
                playBtn.isEnabled = true  
                pauseBtn.isEnabled = false  
                stopBtn.isEnabled = true  
                Toast.makeText(this,"media pause",Toast.LENGTH_SHORT).show()  
            }  
        }  
        // Stop the media player  
        stopBtn.setOnClickListener{  
            if(mediaPlayer.isPlaying || pause.equals(true)){  
                pause = false  
                seek_bar.setProgress(0)  
                mediaPlayer.stop()  
                mediaPlayer.reset()  
                mediaPlayer.release()  
                handler.removeCallbacks(runnable)  
  
                playBtn.isEnabled = true  
                pauseBtn.isEnabled = false  
                stopBtn.isEnabled = false  
                tv_pass.text = ""  
                tv_due.text = ""  
                Toast.makeText(this,"media stop",Toast.LENGTH_SHORT).show()  
            }  
        }  
        // Seek bar change listener  
        seek_bar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {  
            override fun onProgressChanged(seekBar: SeekBar, i: Int, b: Boolean) {  
                if (b) {  
                    mediaPlayer.seekTo(i * 1000)  
                }  
            }  
  
            override fun onStartTrackingTouch(seekBar: SeekBar) {  
            }  
  
            override fun onStopTrackingTouch(seekBar: SeekBar) {  
            }  
        })  
    }  
    // Method to initialize seek bar and audio stats  
    private fun initializeSeekBar() {  
        seek_bar.max = mediaPlayer.seconds  
  
        runnable = Runnable {  
            seek_bar.progress = mediaPlayer.currentSeconds  
  
            tv_pass.text = "${mediaPlayer.currentSeconds} sec"  
            val diff = mediaPlayer.seconds - mediaPlayer.currentSeconds  
            tv_due.text = "$diff sec"  
  
            handler.postDelayed(runnable, 1000)  
        }  
        handler.postDelayed(runnable, 1000)  
    }  
}  
// Creating an extension property to get the media player time duration in seconds  
val MediaPlayer.seconds:Int  
    get() {  
        return this.duration / 1000  
    }  
// Creating an extension property to get media player current position in seconds  
val MediaPlayer.currentSeconds:Int  
    get() {  
        return this.currentPosition/1000  
    }

Output:



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