The Media Player class can be used to control the playback of audio/video files and streams.
Playback of audio/video files and streams on Android can be controlled in a variety of ways. One of these methods is to use the MediaPlayer class.
A software or hardware device that can play media files or disks. For example, many modern media players are capable of playing audio files, for example. MP3 song files and video files, for example. B. The short video clip or movie to be played.
Preview: Media Player
<–Media Player Example
File:MainActivity.kt
package com.example.musicplayer
import android.media.MediaPlayer
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Handler
import android.view.Window
import android.view.WindowManager
import android.widget.Button
import android.widget.SeekBar
import android.widget.TextView
import android.widget.Toast
class MainActivity : AppCompatActivity() {
private var handler: Handler = Handler()
private lateinit var mediaPlayer: MediaPlayer
private lateinit var runnable: Runnable
private var Pause: Boolean = false
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN)
setContentView(R.layout.activity_main)
//Play Button
findViewById<Button>(R.id.Startbutton).setOnClickListener {
if (Pause) {
mediaPlayer.seekTo(mediaPlayer.currentPosition)
mediaPlayer.start()
Pause = false
Toast.makeText(this, "Music playing", Toast.LENGTH_SHORT).show()
} else {
mediaPlayer = MediaPlayer.create(this, R.raw.spk)
mediaPlayer.start()
Toast.makeText(this, "Music playing", Toast.LENGTH_SHORT).show()
}
SeekBar()
findViewById<Button>(R.id.Startbutton).isEnabled = false
findViewById<Button>(R.id.PauseBtn).isEnabled = true
findViewById<Button>(R.id.StopBtn).isEnabled = true
mediaPlayer.setOnCompletionListener {
findViewById<Button>(R.id.Startbutton).isEnabled = true
findViewById<Button>(R.id.PauseBtn).isEnabled = false
findViewById<Button>(R.id.StopBtn).isEnabled = false
Toast.makeText(this, "End", Toast.LENGTH_SHORT).show()
}
}
//Pause Button
findViewById<Button>(R.id.PauseBtn).setOnClickListener {
if (mediaPlayer.isPlaying) {
mediaPlayer.pause()
Pause = true
findViewById<Button>(R.id.Startbutton).isEnabled = true
findViewById<Button>(R.id.PauseBtn).isEnabled = false
findViewById<Button>(R.id.StopBtn).isEnabled = true
}
}
//Stop Button
findViewById<Button>(R.id.StopBtn).setOnClickListener {
if (mediaPlayer.isPlaying || Pause.equals(true)) {
Pause = false
findViewById<SeekBar>(R.id.seek_bar_id).setProgress(0)
mediaPlayer.stop()
mediaPlayer.reset()
mediaPlayer.release()
handler.removeCallbacks(runnable)
findViewById<Button>(R.id.Startbutton).isEnabled = true
findViewById<Button>(R.id.PauseBtn).isEnabled = false
findViewById<Button>(R.id.StopBtn).isEnabled = false
findViewById<TextView>(R.id.left_sec).text = ""
findViewById<TextView>(R.id.right_sec).text = ""
Toast.makeText(this, "Music stop", Toast.LENGTH_SHORT)
}
}
//seek bar Setting
findViewById<SeekBar>(R.id.seek_bar_id).setOnSeekBarChangeListener(object :
SeekBar.OnSeekBarChangeListener {
override fun onProgressChanged(seekBar: SeekBar?, i: Int, b: Boolean) {
if (b) {
mediaPlayer.seekTo(i * 1000)
}
}
override fun onStartTrackingTouch(seekBar: SeekBar?) {
TODO("Not yet implemented")
}
override fun onStopTrackingTouch(seekBar: SeekBar?) {
TODO("Not yet implemented")
}
})
}
private fun SeekBar()
{
findViewById<SeekBar>(R.id.seek_bar_id).max = mediaPlayer.seconds
runnable = Runnable {
findViewById<SeekBar>(R.id.seek_bar_id).progress = mediaPlayer.currentSeconds
findViewById<TextView>(R.id.left_sec).text = "${mediaPlayer.currentSeconds} sec"
val diff = mediaPlayer.seconds - mediaPlayer.currentSeconds
findViewById<TextView>(R.id.right_sec).text = "$diff sec"
handler.postDelayed(runnable, 500)
}
handler.postDelayed(runnable, 500)
}
}
val MediaPlayer.seconds: Int
get() {
return this.duration / 500
}
val MediaPlayer.currentSeconds: Int
get() {
return this.currentPosition / 500
}
File:activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
android:background="@color/white"
tools:context=".MainActivity">
<Button
android:id="@+id/PauseBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:enabled="false"
android:text="Pause"
android:textColor="@color/teal_200"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.791" />
<Button
android:id="@+id/Startbutton"
android:layout_width="88dp"
android:layout_height="wrap_content"
android:layout_marginBottom="63dp"
android:text="Play"
android:textColor="@color/teal_200"
app:layout_constraintBottom_toTopOf="@+id/PauseBtn"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.498"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
<Button
android:id="@+id/StopBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="8dp"
android:enabled="false"
android:text="Stop"
android:textColor="@color/teal_200"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.929" />
<TextView
android:id="@+id/left_sec"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:textColor="@color/black"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView" />
<TextView
android:id="@+id/right_sec"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginTop="8dp"
android:layout_marginEnd="52dp"
android:layout_marginRight="52dp"
android:textColor="@color/black"
app:layout_constraintEnd_toEndOf="@+id/imageView"
app:layout_constraintTop_toBottomOf="@+id/imageView" />
<SeekBar
android:id="@+id/seek_bar_id"
style="@style/Widget.AppCompat.SeekBar.Discrete"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_below="@id/left_sec"
android:layout_marginBottom="48dp"
android:saveEnabled="false"
app:layout_constraintBottom_toTopOf="@+id/Startbutton"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="@+id/imageView"
android:layout_width="410dp"
android:layout_height="330dp"
android:layout_marginBottom="19dp"
android:scaleType="centerCrop"
android:src="@drawable/music"
app:layout_constraintBottom_toTopOf="@+id/seek_bar_id"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.2" />
</androidx.constraintlayout.widget.ConstraintLayout>
- Let us try to run your application. I’m assuming you’ve connected your Android smartphone to your PC. Open one of your project’s activity files and click the Run icon from the toolbar to run the app in android studio.
- By default, you would see the pause and stop button disabled. Now press the play button and it would become disabled and the pause and stop button become enabled. It is shown in the above video.
- Up till now, the music has been playing. Now press the pause button and the play and stop buttons are enabled and the pause button is disabled.
- If we press the stop button then the music will stop and the play button is enabled, if we press the play button again then the music will start from an initial state.
- While you are doing other things on your phone, your music will continue to play in the background. You must exit this application from background activities in order to stop it.
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