object单例

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object单例


public class MusicPlayerJava {
    public static MusicPlayerJava INSTANCE = new MusicPlayerJava();

    private MusicPlayerJava(){}
}


class Driver

interface OnExternalDriverMountListener{
    fun onMount(driver: Driver)

    fun onUnmount(driver: Driver)
}

abstract class Player

object MusicPlayer: Player(), OnExternalDriverMountListener{
    override fun onMount(driver: Driver) {

    }

    override fun onUnmount(driver: Driver) {

    }

    val state : Int = 0

    fun play(url : String){

    }

    fun stop(){

    }
}

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object单例 1年前

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