android应用版本的大小比较

/** * 版本号比较 * * @param version1 * @param version2 * @return结果说明：0代表相等，1代表version1大于version2，-1代表version1小于version2 */ private static int compareVersion(String version1, String version2) { if (version1.equals(version2)) { return 0; } String[] version1Array = version1.split("\\."); String[] version2Array = version2.split("\\."); Log.e("MainActivity", "version1Array=="+version1Array.length); Log.e("MainActivity", "version2Array=="+version2Array.length); int index = 0; // 获取最小长度值 int minLen = Math.min(version1Array.length, version2Array.length); int diff = 0; // 循环判断每位的大小 Log.e("MainActivity", "verTag2=2222="+version1Array[index]); while (index < minLen && (diff = Integer.parseInt(version1Array[index]) - Integer.parseInt(version2Array[index])) == 0) { index++; } if (diff == 0) { // 如果位数不一致，比较多余位数 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; } }