CODEWITHSUNDEEP
flutter
cwhisperer
cwhisperer

Reputation: 1926

Flutter package_info

I want to use package_info to show the version number and build of my app in the about screen. On android phones it works well but on ios I have an error:

Receiver: null Tried calling: toUpperCase()

Part of my Code looks like

class _AboutState extends State<About> {
  Future<PackageInfo> _getPackageInfo() async {
    PackageInfo packageInfo = await PackageInfo.fromPlatform();
    return packageInfo;
  }

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    var now = new DateTime.now();
    String yearNow = DateFormat('yyyy').format(now);

    return FutureBuilder<PackageInfo>(
        future: _getPackageInfo(), // a previously-obtained Future<String> or null
        builder: (BuildContext context, AsyncSnapshot<PackageInfo> snapshot) {
          if (snapshot.hasData) {
            return new Material(
                color: HexToColor('#508bbb'),
                child: new Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: <Widget>[
                    new Text(snapshot.data.appName.toUpperCase(), style: new TextStyle(color: Colors.white, fontSize: 20.0)),

Any help is appreciated. If there is a better proposal do not hesitate ;)

Upvotes: 0

Views: 1526

Answers (2)

cwhisperer
cwhisperer

Reputation: 1926

On IOS

snapshot.data.appName.toString().toUpperCase()

still returns NULL. I found following solution here saying that you have to add it in the Info.plist file

Upvotes: 0

John Joe
John Joe

Reputation: 12803

The reason is because snapshot.data.appName is not String.Change it to snapshot.data.appName.toString().toUpperCase() instead.

Upvotes: 1

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