In the context of Android development with Kotlin, the "raw" folder refers to a specific directory within the "res" (resources) folder of an Android project.

It is used to store raw asset files, such as audio, video, or any other type of binary data, that you want to access in your Android application. To use the "raw" folder in Kotlin, follow these steps:

Create the "raw" folder: Inside your Android project, navigate to the "res" directory. If there is no "raw" folder already, right-click on the "res" directory, choose "New," and then "Directory." Name the new directory "raw." Add raw assets: Place the raw asset files (e.g., audio, video, etc.) that you want to use in your app into the "raw" folder.

The files must be placed directly inside the "raw" folder without any subdirectories. Access raw assets in Kotlin code: In your Kotlin code, you can access the raw assets using the resource ID associated with the file.

The resource ID for files in the "raw" folder is automatically generated by the Android build system. Here's an example of how to access a raw audio file in Kotlin: Assuming you have a raw audio file named "my_audio.mp3" in the "raw" folder.

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

class MyActivity : AppCompatActivity() {

    private var mediaPlayer: MediaPlayer? = null

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

        // Get the resource ID of the raw audio file
        val rawAudioId = R.raw.my_audio

        // Initialize the MediaPlayer with the raw audio resource
        mediaPlayer = MediaPlayer.create(this, rawAudioId)
 var play = findViewById<Button>(R.id.pay)
        play .setOnClickListener {
          // Code to execute when the button is clicked
          // For example, you can show a toast message
        //  Toast.makeText(this, "Button clicked!", Toast.LENGTH_SHORT).show()
           mediaPlayer?.start()
         
            Toast.makeText(this, "Media Playing", Toast.LENGTH_LONG).show()

        }
     var pause= findViewById<Button>(R.id.pasue)
        pause.setOnClickListener {
            mediaPlayer?.apply {
            if (isPlaying) {
                 mediaPlayer!!.stop()
            }
            release()
        }
        mediaPlayer = null
         
            Toast.makeText(this, "Media Stop", Toast.LENGTH_LONG).show()

        }
    }

    override fun onDestroy() {
        super.onDestroy()
        // Release the MediaPlayer when it's no longer needed
        mediaPlayer?.release()
        mediaPlayer = null
    }
}

In the example above, the MediaPlayer.create() method takes the context (in this case, the activity) and the resource ID of the raw audio file as arguments.
The R.raw.my_audio refers to the automatically generated resource ID for the "my_audio.mp3" file in the "raw" folder. Remember to release the MediaPlayer when it's no longer needed to free up resources. You can do this in the onDestroy() method, as shown in the example.

That's it! Now you can access and use raw assets from the "raw" folder in your Kotlin code.