int compareVersionNumbers(String version1, String version2) {
List<int> v1 = version1.split('.').map(int.parse).toList();
List<int> v2 = version2.split('.').map(int.parse).toList();
int minLength = v1.length < v2.length ? v1.length : v2.length;
for (int i = 0; i < minLength; i++) {
if (v1[i] < v2[i]) {
return -1; // version1 < version2
} else if (v1[i] > v2[i]) {
return 1; // version1 > version2
}
}
if (v1.length < v2.length) {
return -1; // version1 < version2
} else if (v1.length > v2.length) {
return 1; // version1 > version2
}
return 0; // version1 == version2
}
void main() {
String version1 = "16.2.1";
String version2 = "13.3.1";
int result = compareVersionNumbers(version1, version2);
if (result > 0) {
print("$version1 大于 $version2");
} else if (result < 0) {
print("$version1 小于 $version2");
} else {
print("$version1 等于 $version2");
}
}
flutter 判断iOS的版本号是否大于13,大于才显示苹果登录
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