fl_mlkit_identify_language 1.1.3

Identify the language of text with ML Kit on Android And IOS

example/lib/main.dart

import 'package:fl_mlkit_identify_language/fl_mlkit_identify_language.dart';
import 'package:flutter/material.dart';
import 'package:flutter_waya/flutter_waya.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(MaterialApp(
      navigatorKey: GlobalWayUI().navigatorKey,
      scaffoldMessengerKey: GlobalWayUI().scaffoldMessengerKey,
      debugShowCheckedModeBanner: false,
      theme: ThemeData.light(useMaterial3: true),
      darkTheme: ThemeData.dark(useMaterial3: true),
      title: 'FlMlKitIdentifyLanguage',
      home: Scaffold(
          appBar: AppBarText('Fl MlKit Identify Language'),
          body: const SingleChildScrollView(
              child: Padding(
            padding: EdgeInsets.all(10.0),
            child: _App(),
          )))));
}

class _App extends StatefulWidget {
  const _App();

  @override
  _AppState createState() => _AppState();
}

class _AppState extends State<_App> {
  ValueNotifier<List<IdentifiedLanguageModel>> identifiedLanguageModel =
      ValueNotifier<List<IdentifiedLanguageModel>>([]);
  TextEditingController controller = TextEditingController();
  FocusNode focusNode = FocusNode();
  FlMlKitIdentifyLanguage mlKitIdentifyLanguage = FlMlKitIdentifyLanguage();

  @override
  Widget build(BuildContext context) {
    return Column(mainAxisAlignment: MainAxisAlignment.center, children: [
      TextField(
          controller: controller,
          focusNode: focusNode,
          maxLength: 500,
          maxLines: 4,
          onSubmitted: (value) {
            focusNode.unfocus();
          },
          decoration: const InputDecoration(
              border: OutlineInputBorder(), hintText: 'Please enter text')),
      CustomFutureBuilder<double>(
          future: () async => mlKitIdentifyLanguage.confidence,
          onWaiting: (_) => const CircularProgressIndicator(),
          onDone: (_, double value, reset) {
            return ElevatedText(
                onPressed: () async {
                  focusNode.unfocus();
                  final confidence = await selectConfidence();
                  if (confidence != null) {
                    final state =
                        await mlKitIdentifyLanguage.setConfidence(confidence);
                    if (state) reset();
                  }
                },
                text: 'Click Modify Confidence : $value');
          }),
      ElevatedText(text: 'Identify Language', onPressed: identifyLanguage),
      ElevatedText(
          text: 'Get Native Confidence',
          onPressed: () {
            mlKitIdentifyLanguage.getCurrentConfidence().then((value) {
              showToast(value.toString());
            });
          }),
      ElevatedText(
          text: 'Identify Possible Language',
          onPressed: identifyPossibleLanguages),
      const SizedBox(height: 20),
      ValueListenableBuilder(
          valueListenable: identifiedLanguageModel,
          builder: (_, List<IdentifiedLanguageModel> value, __) {
            return Column(
                children: value.builder((item) => Container(
                    margin: const EdgeInsets.symmetric(vertical: 10),
                    width: double.infinity,
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                        color: Colors.white,
                        borderRadius: BorderRadius.circular(6)),
                    child: RText(
                        texts: [
                          'confidence：',
                          item.confidence.toString(),
                          '      languageTag：',
                          item.languageTag,
                        ],
                        textAlign: TextAlign.start,
                        styles: const [
                          TextStyle(
                              color: Colors.black, fontWeight: FontWeight.w500),
                          TextStyle(
                              color: Colors.black, fontWeight: FontWeight.bold),
                          TextStyle(
                              color: Colors.black, fontWeight: FontWeight.w500),
                          TextStyle(
                              color: Colors.black, fontWeight: FontWeight.bold),
                        ]))));
          })
    ]);
  }

  Future<void> identifyLanguage() async {
    if (controller.text.isEmpty) {
      showToast('Please enter the text');
      return;
    }
    focusNode.unfocus();
    final data = await mlKitIdentifyLanguage.identifyLanguage(controller.text);
    if (data != null) {
      identifiedLanguageModel.value = [data];
      setState(() {});
    }
  }

  Future<void> identifyPossibleLanguages() async {
    if (controller.text.isEmpty) {
      showToast('Please enter the text');
      return;
    }
    context.requestFocus();
    final data =
        await mlKitIdentifyLanguage.identifyPossibleLanguages(controller.text);
    identifiedLanguageModel.value = data;
    setState(() {});
  }

  Future<double?> selectConfidence() {
    var confidences = [0.01, 0.1, 0.25, 0.5, 0.75, 1.0];
    return Universal(
      mainAxisSize: MainAxisSize.min,
      decoration: const BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.horizontal(
              left: Radius.circular(10), right: Radius.circular(10))),
      children: confidences.builder((item) => Universal(
          width: double.infinity,
          decoration: const BoxDecoration(
              border: Border(
                  bottom: BorderSide(color: Colors.black12, width: 0.5))),
          onTap: () {
            pop(item);
          },
          padding: const EdgeInsets.symmetric(vertical: 10),
          child: BText(item.toString(),
              color: Colors.black, textAlign: TextAlign.center))),
    ).popupBottomSheet(
        options: const BottomSheetOptions(isScrollControlled: false));
  }
}

class AppBarText extends AppBar {
  AppBarText(String text, {super.key})
      : super(
            elevation: 0,
            title: BText(text, fontSize: 18, fontWeight: FontWeight.bold),
            centerTitle: true);
}

class ElevatedText extends ElevatedButton {
  ElevatedText({super.key, required String text, required super.onPressed})
      : super(child: Text(text));
}