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：
<Chronometer
android:id="@ id/tvEndTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
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 = msgTime
val cal2 = Calendar.getInstance()
cal2.time = nowTime
val 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)}"
}
}
}
注意：别再format上做文章、因为没用！！！
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