java判断时间在时间段以内如（7:00-22:00）

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背景

有时候会用到判断当前时间是否在时间段以内。直接上代码

1、直接比较时间的字符串大小

private fun isTimeRange(currentTime: Long): Boolean {
    val nowDate = Date(currentTime)
    val simpleDate = SimpleDateFormat("HH:MM", Locale.CHINA)
    val nowTime = simpleDate.format(nowDate)
    val startTime = simpleDate.format(simpleDate.parse("7:00"))
    val endTime = simpleDate.format(simpleDate.parse(22:00))
    if (nowTime in startTime..endTime) {
        return true
    }
    return false

}

2、通过Calendar

private boolean isTimeRange()throws ParseException {
    SimpleDateFormat df = new SimpleDateFormat("HH:mm");
    Date now = df.parse(df.format(new Date()));
    Date begin = df.parse("7:00");
    Date end = df.parse("22:00");
    Calendar nowTime = Calendar.getInstance();
    nowTime.setTime(now);
    Calendar beginTime = Calendar.getInstance();
    beginTime.setTime(begin);
    Calendar endTime = Calendar.getInstance();
    endTime.setTime(end);
    if (nowTime.before(endTime) && nowTime.after(beginTime)) {
        return true;
    } else {
        return false;
    }
}

亲测有效

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