How do I compare two app versions in flutter?-CodePudding

I was trying to compare two different app version in flutter, But I am not able to assign , App versions in a variable.

var a = 1.0.0;
var b = 1.0.1;

But the values not getting assigned in variables.

I think 1.0.0 is not float value, so how to assign that value and compare them ?

CodePudding user response：

Ok, I got temporary solution,

void main() {
  String a = "1.0.0";
  String b = "1.0.1";

  int intA = int.parse(a.replaceAll(".",""));
  int intB = int.parse(b.replaceAll(".",""));

  if(intB > intA){
    print("New update available");
  }  
}

CodePudding user response：

according to this package on pub.dev: package_info_plus

import 'package:package_info_plus/package_info_plus.dart';

PackageInfo packageInfo = await PackageInfo.fromPlatform();

String version = packageInfo.version;

the version is in String format, so you can split this string by '.' and get individual int and compare them individually, heres example if you need

CodePudding user response：

Use version package from pub.dev

a bit about this package

A dart library providing a Version object for comparing and incrementing version numbers in compliance with the Semantic Versioning spec at [http://semver.org/][2]

you can use this code to compare and perform your task

Version latestVersion = Version.parse("1.5.1");

if (latestVersion > Version.parse(1.3.0))
    _newUpdateDialog(); // your function here