liemvo

private fun launchActivity() {
    pbLaunching.show()
    lifecycleScope.launch(Dispatchers.IO) {
        delay(2000)
        Log.d("###", "Launching")
        launch(Dispatchers.Main) {
            pbLaunching.hid()
        }
    }
}

liemvo

class ExcerciseViewModel: BaseViewModel() {
  val listExercise: LiveData<List<Excercise>?> = Transformations.map(repository.allExcercise) {
    it
  }
  
  private fun handleGetData() {
    if (!hasDataLocal) {
      getDataFromFireBase()
    }
  }

liemvo

fun hideKeyboard(activity: Activity) {
  val inputMethodManager = activity.getSystemSSservice(Activity.INPUT_METHOD_SERVICE) as? InputMethodManager
  val view = activity.currentFocus ?: View(activity)
  inputMethodManager?.hideSoftInputFromWindow(view.windowToken, 0)
}

liemvo

_showAddNoteDialog(BuildContext context) => showDialog(
      context: context,
      builder: (context) {
        return AlertDialog(
          title: Text("Add your note"),
          content: SingleChildScrollView(
            child: Container(
              width: double.infinity,
              child: Column(
                mainAxisSize: MainAxisSize.min,

liemvo

_showMultiChoiceDialog(BuildContext context) => showDialog(
      context: context,
      builder: (context) {
        final _multipleNotifier = Provider.of<MultipleNotifier>(context);
        return AlertDialog(
          title: Text("Select one country or many countries"),
          content: SingleChildScrollView(
            child: Container(
              width: double.infinity,
              child: Column(

liemvo

void main() {
  runApp(MultiProvider(
    providers: [
      ChangeNotifierProvider<SingleNotifier>(
        create: (_) => SingleNotifier(),
      ),
      ChangeNotifierProvider<MultipleNotifier>(
        create: (_) => MultipleNotifier([]),
      )
    ],

liemvo

class MultipleNotifier extends ChangeNotifier {
  List<String> _selectedItems;
  MultipleNotifier(this._selectedItems);
  List<String> get selectedItems => _selectedItems;
  bool isHaveItem(String value) => _selectedItems.contains(value);
  addItem(String value) {
    if (!isHaveItem(value)) {
      _selectedItems.add(value);
      notifyListeners();
    }

liemvo

_showSingleChoiceDialog(BuildContext context) => showDialog(
    context: context,
    builder: (context) {
      var _singleNotifier = Provider.of<SingleNotifier>(context);
      return AlertDialog(
          title: Text("Select one country"),
          content: SingleChildScrollView(
            child: Container(
              width: double.infinity,
              child: Column(

liemvo

import 'package:examples_dialogs/data.dart';
import 'package:flutter/material.dart';
class SingleNotifier extends ChangeNotifier {
  String _currentCountry = countries[0];
  SingleNotifier();
  String get currentCountry => _currentCountry;
  updateCountry(String value) {
    if (value != _currentCountry) {
      _currentCountry = value;
      notifyListeners();

liemvo

_showMessageDialog(BuildContext context) => showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: Text("Are you sure"),
        content: Text("Do you want to delete these items?"),
        actions: <Widget>[
          FlatButton(
            child: Text("Yes"),
            onPressed: () {
              Navigator.of(context).pop();