当我单击多个按钮时，多个音频开始在 android studio 中同时播放

Question

当我单击 recyclerview 的多个图像时，会开始播放多个音频，而不会停止前一个。它越来越烦人。我希望有人能帮我解决这个问题。我读过关于单例类并且只使用一个媒体播放器实例，但不明白如何正确实现它。

class RecylerViewAdapter (var context: Context, var arrayList: ArrayList<ItemModel>) :
    RecyclerView.Adapter<RecylerViewAdapter.ItemHolder>() {

    var mediaPlayer: MediaPlayer? = null

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ItemHolder {

        val viewHolder = LayoutInflater.from(parent.context)
            .inflate(R.layout.sound_item_list, parent, false)
        return ItemHolder(viewHolder)

    }

    override fun onBindViewHolder(holder: ItemHolder, position: Int) {

        val itemModel: ItemModel = arrayList[position]

        holder.soundImage.setImageResource(itemModel.soundImage)
        holder.soundTitle.text = itemModel.soundTitle

        mediaPlayer = MediaPlayer.create(context, itemModel.soundTrack)
        mediaPlayer!!.isLooping = true

        holder.soundImage.setOnClickListener {
            Toast.makeText(context, itemModel.soundTitle, Toast.LENGTH_LONG).show()
            mediaPlayer!!.start()
        }

    }


    override fun getItemCount(): Int {

        return arrayList.size

    }

    class ItemHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

        var soundImage = itemView.soundImage
        var soundTitle = itemView.soundTitle

    }


}

Answer 1

代码看起来不错。请记住在播放器上调用release() 并在播放之前使用新的媒体文件再次对其进行初始化。也许实现一个MediaPlayer.OnCompletionListener 可能对您有用，您可以在其中调用player.release()

或许这已经足够了：

holder.soundImage.setOnClickListener {
        mediaPlayer!!.release()
        mediaPlayer = null
        mediaPlayer = MediaPlayer.create(context, itemModel.soundTrack)
        Toast.makeText(context, itemModel.soundTitle, Toast.LENGTH_LONG).show()
        mediaPlayer!!.start()
    }