api列表

  1. compareVersion    :版本号比较,0代表相等，1代表version1大于version2，-1代表version1小于version2

源码

  1. object StringUtils {
  2.     /**
  3.      * 版本号比较,0代表相等，1代表version1大于version2，-1代表version1小于version2
  4.      *
  5.      * @param version1
  6.      * @param version2
  7.      * @return
  8.      */
  9.     fun compareVersion(version1: String, version2: String): Int {
  10.         if (version1 == version2) {
  11.             return 0
  12.         }
  13.         val version1Array = version1.split("\\.".toRegex()).toTypedArray()
  14.         val version2Array = version2.split("\\.".toRegex()).toTypedArray()
  15.         var index = 0
  16.         // 获取最小长度值
  17.         val minLen = Math.min(version1Array.size, version2Array.size)
  18.         var diff = 0
  19.         // 循环判断每位的大小
  20.         while (index < minLen
  21.             && version1Array[index].toInt() - version2Array[index].toInt().also { diff = it } == 0
  22.         ) {
  23.             index++
  24.         }
  25.         return if (diff == 0) {
  26.             // 如果位数不一致，比较多余位数
  27.             for (i in index until version1Array.size) {
  28.                 if (version1Array[i].toInt() > 0) {
  29.                     return 1
  30.                 }
  31.             }
  32.             for (i in index until version2Array.size) {
  33.                 if (version2Array[i].toInt() > 0) {
  34.                     return -1
  35.                 }
  36.             }
  37.             0
  38.         } else {
  39.             if (diff > 0) 1 else -1
  40.         }
  41.     }
  42. }