I have an application like this:
My aim is that when I press the eye icon next to the text "Hello", I want a box to open just below the text and write the German version of "Hello". So it will say "Hallo".
My purpose is to show the meaning of the word.
When I press the eye, I want to show the German of the word. How can I make a white box under the word Hello, that is, the box in which the German language will be written?
Codes:
import 'package:flutter/material.dart';
import 'package:carousel_slider/carousel_slider.dart';
class selamlasmaLearn extends StatelessWidget {
List <wordAndMeaning> wordsList = [wordAndMeaning("Hello", "Hallo"), wordAndMeaning("Go", "Gehen")];
@override
Widget build(BuildContext context) {
return Scaffold(
body: Builder(
builder: (context) {
final double height = MediaQuery.of(context).size.height;
return CarouselSlider(
options: CarouselOptions(
height: height,
viewportFraction: 1.0,
enlargeCenterPage: false,
),
items: wordsList.map((wordAndMeaning word) {
return Builder(
builder: (BuildContext context) {
return Container(
width: MediaQuery.of(context).size.width,
decoration: BoxDecoration(color: Colors.amber),
child: Center(
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
word.word,
style: TextStyle(fontSize: 45, color: Colors.white),
),
SizedBox(width: 10,),
Icon(Icons.remove_red_eye_sharp, color: Colors.white, size: 25,), // <<<<<<<<<
],
),
),
);
},
);
}).toList(),
);
}
),
);
}
}
class wordAndMeaning {
String word;
String meaning;
wordAndMeaning(this.word, this.meaning);
}
I keep the word and its German in a list called wordsList.
Thanks for the help in advance.
CodePudding user response：
You can convert the widget to StatefulWidget or use a ValueNotifier to control the preserve/notify the state visibility.
You can use Visibility widget or just if to show and hide German text.
class selamlasmaLearn extends StatefulWidget {
@override
State<selamlasmaLearn> createState() => _selamlasmaLearnState();
}
class _selamlasmaLearnState extends State<selamlasmaLearn> {
bool _showGerman = false;
List<wordAndMeaning> wordsList = [
wordAndMeaning("Hello", "Hallo"),
wordAndMeaning("Go", "Gehen")
];
@override
Widget build(BuildContext context) {
return Scaffold(
body: Builder(builder: (context) {
final double height = MediaQuery.of(context).size.height;
return CarouselSlider(
options: CarouselOptions(
height: height,
viewportFraction: 1.0,
enlargeCenterPage: false,
),
items: wordsList.map((wordAndMeaning word) {
return Builder(
builder: (BuildContext context) {
return Container(
width: MediaQuery.of(context).size.width,
decoration: BoxDecoration(color: Colors.amber),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
Column(
mainAxisSize: MainAxisSize.min,
children: [
Text(word.word,
style:
TextStyle(fontSize: 45, color: Colors.white)),
if (_showGerman) Text(word.meaning), //modify the way you want
],
),
const SizedBox(
width: 10,
),
IconButton(
icon: Icon(Icons.remove_red_eye_sharp),
color: Colors.white,
iconSize: 25,
onPressed: () {
setState(() {
_showGerman = !_showGerman;
});
},
),
],
),
);
},
);
}).toList(),
);
}),
);
}
}
CodePudding user response：
Use the Tooltip widget
I'm emphasizing on the popup part in your question title. When using a Tooltip you ensure that your widgets do not shift position or jump when the Tooltip widget appear, as the example below illustrates.
Example code:
import 'package:flutter/material.dart';
class TooltipExample extends StatelessWidget {
const TooltipExample({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Tooltip(
// Set the tooltip to trigger on a single tap, tapping outside the
// widget will make the tooltip disappear.
triggerMode: TooltipTriggerMode.tap,
// The message shown when the tooltip appears.
message: "Tooltip showing!",
// Consider adjusting this to your needs.
showDuration: const Duration(days: 1),
// The widget that must be clicked to show the tooltip.
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Row(
mainAxisSize: MainAxisSize.min,
children: const [
Text("Hello"),
SizedBox(
width: 8,
),
Icon(Icons.visibility),
],
),
),
),
const Padding(
padding: EdgeInsets.all(8.0),
child: Text("Cover me!"),
)
],
),
);
}
}
// Some code to run the above example, note the theme part that turns the
// tooltip white.
class App extends StatelessWidget {
const App({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
// Style the overall design of tooltips in the app in one place,
// or provide in each tooltip individually.
theme: ThemeData(
tooltipTheme: const TooltipThemeData(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.all(
Radius.circular(4),
),
),
textStyle: TextStyle(
backgroundColor: Colors.white,
color: Colors.black,
),
),
),
home: const Scaffold(
backgroundColor: Colors.amber,
body: TooltipExample(),
),
);
}
}
void main() => runApp(const App());
Here is how it looks:
Note that the Tooltip widget overlays whatever is below it. (instead of pushing it further down - like toggling the visibility of a normal widget in a row or column would have done)
