android判斷版本更新演算法

標籤：

/** * 判斷版本更新 * @param version1 伺服器應用版本 * @param version2 應用本身版本 * @return 0=>版本相同，1=>版本需要更新，-1版本不需要更新 */private int compareVersion(String version1, String version2) {    if (version1.equals(version2)) {        return 0;    }    String[] version1Array = version1.split("\\.");    String[] version2Array = version2.split("\\.");    int minLen = Math.min(version1Array.length, version2Array.length);    int index = 0;    int diff = 0;    while (index < minLen            && (diff = Integer.parseInt(version1Array[index])                    - Integer.parseInt(version2Array[index])) == 0) {        index++;    }    if (diff == 0) {        for (int i = index; i < version1Array.length; i++) {            if (Integer.parseInt(version1Array[i]) > 0) {                return 1;            }        }        for (int i = index; i < version2Array.length; i++) {            if (Integer.parseInt(version2Array[i]) > 0) {                return -1;            }        }        return 0;    } else {        return diff > 0 ? 1 : -1;    }}

 

android判斷版本更新演算法