pub package

A flutter plugin for adapting screen and font size.Let your UI display a reasonable layout on different screen sizes!


Get the Google Translation Api key:

  • First you will need to start a project in Google Cloud Platform

  • Then Enable Google Cloud Translation API Enable Google Cloud Translation API…

  • Create a credentials key for your account..

    Navigate to the API Manager section of your project dashboard, Create Credentials…

    In the drop down menu, select API key: API Key…

Add dependency:

Please check the latest version before installation. If there is any problem with the new version, please use the previous version

  # Functionalities
  google_translator: ^{latest version}
    sdk: flutter

Add the following imports to your Dart code:

import 'package:google_translator/google_translator.dart';

Getting Started

First, you will need to send the API Key, allong with a few default parameters described bellow, before the calling of the translate function (we recomend to do as in the example):

void main() {
    /// Required to make the `GoogleTranslatorInit` call before the `MaterialApp`

class MyApp extends StatelessWidget {

  final String apiKey = "YOUR_GCP_API_KEY";

  Widget build(BuildContext context) {
    return GoogleTranslatorInit(apiKey,
      translateFrom: Locale('pt-br'),
      translateTo: Locale('en'),
      // automaticDetection: , In case you don't know the user language will want to traslate,
      // cacheDuration: Duration(days: 13), The duration of the cache translation.
      builder: () => MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
        home: MyHomePage(title: 'Página inicial de demonstração do Flutter'),

Note: If will want to make the call before the MaterialApp, will have to add the WidgetsFlutterBinding.ensureInitialized(); before the runApp function.

Basic Usage

Now, all you'll have to make is add the .translate() to all the Text you want to translate.

    appBar: AppBar(
    title: Text(widget.title ?? "").translate(),
    body: Column(
        children: [
            Text("Meu texto traduzido").translate(),
            Text("Este texto mostra um placeholder diferente").translate("Place to Holder")


  • Add extension to RichText;
  • Add extension to CupertinoTextField;
  • Add extension to CupertinoSearchTextField;
  • Add extension to CupertinoSearchTextField;
  • Add extension to TextField;
  • Add extension to Tooltip;
  • x Add extension to SelectableText.
  • Migrate dio_http_cache dependency to a safer one (expecting creators to add null-safety on


This package works with cache data dio_http_cache, that, by default last's 7 days, but can be change in the GoogleTranslatorInit > cacheDuration parameter.


Please if you see any issues, bugs, or feature requests, send to me in: GitHub issue.