diff --git a/Lib_Base/src/main/java/com/quyunshuo/base/utils/DateUtils.kt b/Lib_Base/src/main/java/com/quyunshuo/base/utils/DateUtils.kt
index 49c6c5f..d42557b 100644
--- a/Lib_Base/src/main/java/com/quyunshuo/base/utils/DateUtils.kt
+++ b/Lib_Base/src/main/java/com/quyunshuo/base/utils/DateUtils.kt
@@ -32,4 +32,86 @@ object DateUtils {
         }
         return date.time
     }
+
+    /**
+     * 将计时毫秒值[millisecond]转换为时分秒
+     */
+    fun getGapTime(millisecond: Long): String {
+        val hours = millisecond / (1000 * 60 * 60)
+        val minutes = (millisecond - hours * (1000 * 60 * 60)) / (1000 * 60)
+        val second = (millisecond - hours * (1000 * 60 * 60) - minutes * (1000 * 60)) / 1000
+        var diffTime: String
+        diffTime = if (minutes < 10) {
+            "$hours:0$minutes"
+        } else {
+            "$hours:$minutes"
+        }
+        diffTime = if (second < 10) {
+            "$diffTime:0$second"
+        } else {
+            "$diffTime:$second"
+        }
+        return diffTime
+    }
+
+    /**
+     * 获取以当前日期为基准的某一时间段的日期
+     * @param isFuture Boolean 真为未来时间 假为以前的时间
+     * @param interval Int 间隔时间 以当前时间为基准 距今天前n天或后n天开始 就是n 0是当前日期
+     * @param size String 时间区间长度  比如获取五天的时间 就是5 当前日期也算一天
+     * @return List<String> 日期集合 顺序为日期的新旧程度
+     * @throws RuntimeException 如果[interval]小于0或者[size]小于1会抛出[RuntimeException]
+     *
+     * 示例：获取后天开始 为期七天的时间就是 getExcerptDate(true, 2, 7)
+     *      获取昨天开始再往前7天的时间 getExcerptDate(false, 1, 7)
+     */
+    fun getExcerptDate(
+        isFuture: Boolean,
+        interval: Int,
+        size: Int,
+        dateFormat: String
+    ): List<String> {
+        if (interval < 0) throw RuntimeException("\"interval\" it can't be less than 0")
+        if (size < 1) throw RuntimeException("\"size\" it can't be less than 1")
+        val simpleDateFormat = SimpleDateFormat(dateFormat, Locale.CHINESE)
+        val calendar = Calendar.getInstance()
+        val currentDayOfYear = calendar.get(Calendar.DAY_OF_YEAR)
+        val currentYear = calendar.get(Calendar.YEAR)
+        val dateList = mutableListOf<String>()
+        if (isFuture) {
+            (interval until interval + size).forEach {
+                val timestamp = getSomedayDate(it, calendar, currentDayOfYear, currentYear)
+                dateList.add(simpleDateFormat.format(timestamp))
+            }
+        } else {
+            (-interval downTo -interval - size + 1).forEach {
+                val timestamp = getSomedayDate(it, calendar, currentDayOfYear, currentYear)
+                dateList.add(simpleDateFormat.format(timestamp))
+            }
+        }
+        return dateList
+    }
+
+    /**
+     * 获取距离今天的某一天的时间戳
+     * @param numberOfDaysBetween Int 间隔今天的天数 正数为未来时间 负数为以前的时间
+     * @param calendar Calendar Calendar对象 使用依赖注入方式 提高对象的复用性
+     * @param currentDayOfYear Int 当前时间在当年的天 使用Calendar获取
+     * @param currentYear Int 当前年 使用Calendar获取
+     * @return Long 时间戳
+     */
+    fun getSomedayDate(
+        numberOfDaysBetween: Int,
+        calendar: Calendar,
+        currentDayOfYear: Int,
+        currentYear: Int
+    ): Long {
+        calendar.set(Calendar.DAY_OF_YEAR, currentDayOfYear)
+        calendar.set(Calendar.YEAR, currentYear)
+        calendar.set(
+            Calendar.DAY_OF_YEAR,
+            calendar.get(Calendar.DAY_OF_YEAR) + numberOfDaysBetween
+        )
+        return calendar.time.time
+    }
 }
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