How do you show a dollar sign $ in Flutter?

[Niyazi Toros]

How do you show a dollar sign $ in Flutter?

I have a currency section in my app and I need to show user a dollar sign $. How do I do that?

"\$ Dollar: " is not working....

Any help please?

[Mikkel Ravn]

\$ is the correct escape sequence for a dollar sign. If you don't need interpolation in your string you can also use a raw string literal by prefixing with r. For example:

    int amount = 42;

    ...

    Column(children: <Widget>[

      Text('here is a dollar amount: \$$amount'),

      Text(r'here is a dollar sign: $'),

    ]))

Shows

   here is a dollar amount: $42

   here is a dollar sign: $

on screen. If that does not work for you, there is likely some other error at play. Please include more of your code in that case.

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Mikkel Nygaard Ravn

Software Engineer

[Niyazi Toros]

Thanks for reply.

In my internationalization load I had 3 json file as shown below:

the appBar title works well.

title: new Text(

  trans(context, "main.appTitle"),
  style: TextStyle(fontSize: 18.0, fontWeight: FontWeight.w500),
),

the currency part is not working and giving me error.

children: <Widget>[
  _buildAction(
      trans(context, "main.dollar"),
      trans(context, "main.currency.buy"),
      stgBuy,
      trans(context, "main.currency.sell"),
      stgSell,
      Colors.red,
      blueGradient,
      new AssetImage("assets/images/dollar.png")),

ERROR IS:

E/flutter (10721): FormatException: Unrecognized string escape (at line 6, character 28)

E/flutter (10721):   "main.dollar": "\$ Dollar",

The json files..............

en.json

{

  "main.sterling": "£ Sterling",

  "main.euro": "€ Euro",

  "main.dollar": "\$ Dollar",

  "main.currency.buy": "Buy: ",

  "main.currency.sell": "Sell: ",

}

tr.json

{

  "main.sterling": "£ Sterling",

  "main.euro": "€ Euro",

  "main.dollar": "\$ Dollar",

  "main.currency.buy": "Alış: ",

  "main.currency.sell": "Satış: ",

}

ru.json

{

  "main.sterling": "£ Sterling",

  "main.euro": "€ Euro",

  "main.dollar": "\$ Dollar",

  "main.currency.buy": "купить: ",

  "main.currency.sell": "продавать: ",

}

[Mikkel Ravn]

You should not escape $ in JSON, only in Dart.

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[Niyazi Toros]

Thanks Mikkel, is working :)

Kind Regards