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How to pause and resume audio playback using MediaPlayer in Kotlin Android

How to pause and resume audio playback using MediaPlayer in Kotlin Android.

Here is a detailed step-by-step tutorial on how to pause and resume audio playback using MediaPlayer in Kotlin Android:

Step 1: Set up the project​

Start by creating a new Android project in Kotlin. Open Android Studio, click on "Start a new Android Studio project," and follow the wizard to set up your project.

Step 2: Add the necessary permissions​

In your project's AndroidManifest.xml file, add the following permissions to allow your app to access audio files:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Step 3: Add a button to play audio​

In your app's activity_main.xml file, add a Button widget to play the audio. Here's an example:

<Button
    android:id="@+id/playButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Play Audio" />

Step 4: Initialize the MediaPlayer​

In your MainActivity.kt file, import the necessary classes and create a MediaPlayer object. Here's an example:

import android.media.MediaPlayer
import android.os.Bundle
import android.view.View
import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {
    private lateinit var mediaPlayer: MediaPlayer

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        mediaPlayer = MediaPlayer()
    }
}

Step 5: Set the audio file to play​

In the onCreate() method, locate the audio file you want to play and set it to the MediaPlayer object using the setDataSource() method. Here's an example:

val audioFile = "path/to/audio/file.mp3"
mediaPlayer.setDataSource(audioFile)

Step 6: Prepare the MediaPlayer​

After setting the audio file, call the prepare() method to prepare the MediaPlayer for playback. Here's an example:

mediaPlayer.prepare()

Step 7: Add a click listener to the play button​

In the onCreate() method, get a reference to the playButton using findViewById() and add a click listener to it. Inside the click listener, call the start() method of the MediaPlayer to start playing the audio. Here's an example:

val playButton: Button = findViewById(R.id.playButton)
playButton.setOnClickListener {
    mediaPlayer.start()
}

Step 8: Add a button to pause audio playback​

In your activity_main.xml file, add another Button widget to pause the audio playback. Here's an example:

<Button
    android:id="@+id/pauseButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Pause Audio" />

Step 9: Pause audio playback​

In the onCreate() method, get a reference to the pauseButton using findViewById() and add a click listener to it. Inside the click listener, call the pause() method of the MediaPlayer to pause the audio playback. Here's an example:

val pauseButton: Button = findViewById(R.id.pauseButton)
pauseButton.setOnClickListener {
    mediaPlayer.pause()
}

Step 10: Add a button to resume audio playback​

In your activity_main.xml file, add another Button widget to resume the audio playback. Here's an example:

<Button
    android:id="@+id/resumeButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Resume Audio" />

Step 11: Resume audio playback​

In the onCreate() method, get a reference to the resumeButton using findViewById() and add a click listener to it. Inside the click listener, call the start() method of the MediaPlayer to resume the audio playback. Here's an example:

val resumeButton: Button = findViewById(R.id.resumeButton)
resumeButton.setOnClickListener {
    mediaPlayer.start()
}

That's it! You have now implemented the pause and resume functionality for audio playback using MediaPlayer in Kotlin Android.