new_version package in flutter returns RangeError (index): Invalid value: Valid value range is empty-CodePudding

I am using new_vesrion ^0.3.1 package in flutter to display alert dialog for showing to update the app if new version is available on store of flutter app but I am getting below written exception:

[ERROR:flutter/lib/ui/ui_dart_state.cc(198)] Unhandled Exception: RangeError (index): Invalid value: Valid value range is empty: 1 E/flutter ( 5988): #0 List.[] (dart:core-patch/growable_array.dart:264:36) E/flutter ( 5988): #1 NewVersion._getAndroidStoreVersion (package:new_version/new_version.dart:195:26) E/flutter ( 5988): E/flutter ( 5988): #2 _SplashScreenState._checkVersion (package:cardicare/appScreens/Splash_Screen.dart:124:20)

Below I have given my code written for showing alert dialog for new updates of flutter app:

void _checkVersion() async {

 final newVersion = NewVersion
 (
  androidId: androidAppId,
  iOSId: iOSAppId
 );
 
final status = await newVersion.getVersionStatus();
if(status!=null)
{ 
  if(status.canUpdate)
  {
    newVersion.showUpdateDialog
      (
        context: context, 
        versionStatus: status,
        dialogTitle: "Update!!!",
        //dismissButtonText: "Skip",
        dialogText: "Please update your app from " "${status.localVersion}"  " to "  "${status.storeVersion}",
        allowDismissal: false,
        dismissAction: () 
        {
          SystemNavigator.pop();  
        },
        updateButtonText: "Let's Update"
      );    
  }
   print("app version on Device " "${status.localVersion}");  
   print("app version on store " "${status.storeVersion}");
}

} And _checkVersion() method is called in initState() of Splash screen. So please help me to solve this issue.

CodePudding user response：

If your app is not released yet it must be throwing an error

Try adding a try catch and if it fails then dont show the pop up

String storeVersion = "";
try{
  storeVersion = status.storeVersion;
}catch(e){}

CodePudding user response：

I think i find the problem, i look into the library and compare to the return from google if u send GET to [https://play.google.com/store/apps/details?id=APP_ID&hl=en]

I think google have changed their return, before the version was returning on the ds:4 script, but now it returns at the ds:5

If u change the line 183 from the new_version.dart to

(elm) => elm.text.contains('key: \'ds:5\''),

The erros is gone, i think they have to update the library