android中Chronometer控件怎么用

这篇文章主要介绍android中Chronometer控件怎么用，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

1、序言

Chronometer 是android 官方提供的计时器、可实现正/倒计时、格式固定：00:00:00；

2、使用

如图xml

xml 简化写法如下：

3、发起倒计时

 tvEndTime.run {            //格式化-> 距结束00:00:00            format = "距结束%s"            //设置倒计时时间 countDownTimeMill -》自定义 单位毫秒            base = countDownTimeMill + SystemClock.elapsedRealtime()            //是否为倒计时、            isCountDown = true            //倒计时监听 每隔一秒            setOnChronometerTickListener {                //倒计时结束                if (SystemClock.elapsedRealtime() - it.base >= 0) {                    it.stop()                    return@setOnChronometerTickListener                    // TODO: 2021/9/16 处理业务逻辑                 }            }        }

4、自定义格式化

 tvEndTime.run {            //格式化-> 距结束00:00:00            format = "距结束%s"            //设置倒计时时间            base = countDownTimeMill + SystemClock.elapsedRealtime()            //是否为倒计时、            isCountDown = true            //倒计时监听 每隔一秒            setOnChronometerTickListener {                //倒计时结束                if (SystemClock.elapsedRealtime() - it.base >= 0) {                    it.stop()                    return@setOnChronometerTickListener                   //自定义日期格式 如 1天 23:02:56                it.text = TimeUtils.formatSecondByMill(86400 * 1000)                }            }        }

工具类：

object TimeUtils {    /**     * 发送消息日期格式     *     * @param msgTimeMillis     * @return     */    fun getMsgFormatTime(msgTimeMillis: Long): String? {        val nowTime = Date()        val msgTime = Date(msgTimeMillis)        val days = differentDays(msgTime, nowTime)        // 早上、下午、晚上 1:40        val hourOfDay = DateUtils.getHour(msgTime)        val whens: String = when {            hourOfDay >= 18 -> { //18-24                "晚上"            }            hourOfDay >= 13 -> { //13-18                "下午"            }            hourOfDay >= 11 -> { //11-13                "中午"            }            hourOfDay >= 5 -> { //5-11                "早上"            }            else -> { //0-5                "凌晨"            }        }        return if (days < 1) {            whens + " " + DateUtils.format(msgTime, "HH:mm")        } else {            // 昨天            //            return DateUtils.format(new Date(msgTimeMillis), "yyyy年MM月dd日 ") + when + DateUtils.format(new Date(msgTimeMillis), " HH:mm");            DateUtils.format(Date(msgTimeMillis), "yyyy年MM月dd日 ")        }    }     /**     * date2比date1多的天数     * @param date1     * @param date2     * @return     */    private fun differentDays(msgTime: Date, nowTime: Date): Int {        val cal1 = Calendar.getInstance()        cal1.time = msgTimeval cal2 = Calendar.getInstance()        cal2.time = nowTimeval day1 = cal1[Calendar.DAY_OF_YEAR]        val day2 = cal2[Calendar.DAY_OF_YEAR]        val year1 = cal1[Calendar.YEAR]        val year2 = cal2[Calendar.YEAR]        return if (year1 != year2) //同一年        {            var timeDistance = 0            for (i in year1 until year2) {                timeDistance += if (i % 4 == 0 && i % 100 != 0 || i % 400 == 0) //闰年                {                    366                } else  //不是闰年                {                    365                }            }            timeDistance + (day2 - day1)        } else  //不同年        {            day2 - day1        }    }     /**     * 格式化秒数     * des:d 长度不够2位的时前面补0     */    fun formatSeconds(seconds: Long): String? {        return when {            seconds <= 0 -> {                "00:00"            }            seconds < 60 -> {                String.format(Locale.getDefault(), "00:d", seconds % 60)            }            seconds < 3600 -> {                String.format(Locale.getDefault(), "d:d", seconds / 60, seconds % 60)            }            else -> {                String.format(                    Locale.getDefault(),                    "d:d:d",                    seconds / 3600,                    seconds % 3600 / 60,                    seconds % 60                )            }        }    }     fun formatSecond(seconds: Long): String? {        return when {            seconds <= 0 -> {                "0分"            }            seconds < 60 -> {                String.format(Locale.getDefault(), "d秒", seconds % 60)            }            seconds < 3600 -> {                String.format(Locale.getDefault(), "d分d秒", seconds / 60, seconds % 60)            }            else -> {                String.format(                    Locale.getDefault(),                    "d时d分",                    seconds / 3600,                    seconds % 3600 / 60,                )            }        }    }     /**     * 格式化日期 eg 天 时:分:秒  00:00:00     * @param dayUnit 单位 默认不写     */    fun formatSecondByMill(millTime: Long, dayUnit: String = "天"): String? {        //小于一天、单位毫秒        return if (millTime <= 86400 * 1000) {            formatSeconds(millTime / 1000)        } else {            val oneDayMill = 86400 * 1000            val day = millTime / oneDayMill            val lastOneDayMills = millTime - day * oneDayMill            "$day$dayUnit ${formatSeconds(lastOneDayMills / 1000)}"        }    } }

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