TimerTask 使用记录

1、调用者使用

MyTimerTask.instance(120)?.start(object : MyTimerTask.OnTimerTaskUI {
            override fun onUI(time: Int) {

            }
        })

2、被调用类

/**
 * Created by zxy on 2020/7/21 14:17
 * ******************************************
 * *
 * ******************************************
 */
class MyTimerTask : TimerTask {
    private var maxTime = 0
    private var time = -1
    val mTimer = Timer()
    private lateinit var onTimerTaskUI:OnTimerTaskUI
    interface OnTimerTaskUI{
        fun onUI(time:Int)
    }

    //zxy 单例模式
    private constructor(maxTime: Int) {
        this.maxTime = maxTime
    }

    companion object {
        @Volatile
        private var instance: MyTimerTask? = null

        fun instance(maxTime: Int): MyTimerTask? {
            if (instance == null) {
                synchronized(MyTimerTask::class.java) {
                    if (instance == null) {
                        instance = MyTimerTask(maxTime)
                    }
                }
            }
            return instance
        }
    }


    override fun run() {
        time-=1
        onTimerTaskUI.onUI(time)
    }

    /**
     * 开始
     */
    fun start(onTimerTaskUI:OnTimerTaskUI,step: Long = 1000) {
        this.onTimerTaskUI =onTimerTaskUI

        mTimer.schedule(this, 0, step)
    }


}

本文地址：https://blog.csdn.net/fayangzhou/article/details/107488289