我正在尝试做一个游戏，你必须记住点击4个按钮的顺序。如果我按下按钮几次，按下的声音消失。
我试着在点击它们时调整声音，点击声音需要1秒钟。告诉我我在哪里犯了错误，以及如何做对。

class MainActivity : AppCompatActivity() {
    private lateinit var mainView: ActivityMainBinding

    private lateinit var sound: MediaPlayer

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        mainView = ActivityMainBinding.inflate(layoutInflater)
        setContentView(mainView.root)

        mainView.apply {

            blueButton.setOnClickListener {
                sound = MediaPlayer.create(applicationContext, R.raw.blue_bt_tap_sound)
                play(sound)
            }

            redButton.setOnClickListener {
                sound = MediaPlayer.create(applicationContext, R.raw.red_bt_tap_sound)
                play(sound)
            }

            greenButton.setOnClickListener {
                sound = MediaPlayer.create(applicationContext, R.raw.green_bt_tap_sound)
                play(sound)
            }

            yellowButton.setOnClickListener {
                sound = MediaPlayer.create(applicationContext, R.raw.yellow_bt_tap_sound)
                play(sound)
            }

        }
    }

    private fun play(buttonSound: MediaPlayer) {
        buttonSound.start()
    }

}

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