How to create selectable text in flutter
flutter selectable text

Hi Guys, Welcome to Proto Coders Point, In this flutter Article will learn how to implement a Text Widget that can be selectable,.So to acheive this will make use of flutter selectableText widget, so that a app user can easily select the text, copy it & paste easily.

Usually when we develop any mobile application, The Text with-in the app cannot be selectable to copy(by default),Like how be can perform copy & post operation on website kinds of app.

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In this Flutter tutorial lets learn how to make a text selectable in flutter using selectable text widget in flutter app.

Let’s get started

Flutter selectableText

Selectable Text has 2 types of constructor that you can use to give customized styling for TextWidget.

Flutter Single Style Selectable Text Widget (Contructor)

SelectableText(
   String data, 
   {
      Key? key, 
      FocusNode? focusNode, 
      TextStyle? style, 
      StrutStyle? strutStyle, 
      TextAlign? textAlign, 
      TextDirection? textDirection, 
      double? textScaleFactor, 
      bool showCursor = false, 
      bool autofocus = false, 
      ToolbarOptions? toolbarOptions, 
      int? minLines, 
      int? maxLines, 
      double cursorWidth = 2.0, 
      double? cursorHeight, 
      Radius? cursorRadius, 
      Color? cursorColor, 
      selectionHeightStyle = ui.BoxHeightStyle.tight, 
      BoxWidthStyle selectionWidthStyle = ui.BoxWidthStyle.tight,  
      DragStartBehavior dragStartBehavior = DragStartBehavior.start, 
      bool enableInteractiveSelection = true, 
      TextSelectionControls? selectionControls, 
      GestureTapCallback? onTap, 
      ScrollPhysics? scrollPhysics, 
      String? semanticsLabel, 
      TextHeightBehavior? textHeightBehavior, 
      TextWidthBasis? textWidthBasis, 
      SelectionChangedCallback? onSelectionChanged
    }
)

Multi-style Selectable Text (constructor)

SelectableText.rich(
   TextSpan textSpan, 
   {
     Key? key, 
     FocusNode? focusNode, 
     TextStyle? style, 
     StrutStyle? strutStyle, 
     TextAlign? textAlign, 
     TextDirection? textDirection, 
     double? textScaleFactor, 
     bool showCursor = false, 
     bool autofocus = false, 
     ToolbarOptions? toolbarOptions, 
     int? minLines, int? maxLines, 
     double cursorWidth = 2.0, 
     double? cursorHeight, 
     Radius? cursorRadius, 
     Color? cursorColor, 
     BoxHeightStyle selectionHeightStyle = ui.BoxHeightStyle.tight, 
     BoxWidthStyle selectionWidthStyle = ui.BoxWidthStyle.tight,  
     DragStartBehavior dragStartBehavior = DragStartBehavior.start, 
     bool enableInteractiveSelection = true, 
     TextSelectionControls? selectionControls, 
     GestureTapCallback? onTap, 
     ScrollPhysics? scrollPhysics, 
     String? semanticsLabel, 
     TextHeightBehavior? textHeightBehavior, 
     TextWidthBasis? textWidthBasis, 
     SelectionChangedCallback? onSelectionChanged
   }
)

Example on How to use Flutter Selectable Text Widget

In below Example, Will implement selectable text, where I will you how to use both SelectableText & SelectableText.rich constructor class, and in below code I have added a textfield so that user can select text and paste it in flutter textField.

import 'dart:ui';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // Remove the debug banner
      debugShowCheckedModeBanner: false,
      title: 'KindaCode.com',
      theme: ThemeData(
        primarySwatch: Colors.indigo,
      ),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatelessWidget {
  const HomePage({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Selectable Text Example - ProtoCodersPoint.com')),
      body: Padding(
        padding: const EdgeInsets.all(30),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: const [
            Text("This is normal text widget, not selectable",style: TextStyle(fontSize: 30),),
            SizedBox(
              height: 20,
            ),
            // SelectableText
            SelectableText(
              'Long Press on me to Copy me, Try it now.',
              style: TextStyle(fontSize: 20),
            ),
            SizedBox(
              height: 20,
            ),
            // SelectableText.rich example 
            SelectableText.rich(TextSpan(
                text: 'The computer was born to solve problems, ',
                style: TextStyle(fontSize: 20),
                children: [
                  TextSpan(
                      text: 'that did not exist before. – ',
                      style: TextStyle(color: Colors.blue)),
                  TextSpan(
                      text: 'Bill Gates',
                      style: TextStyle(color: Colors.red))
                ])),
            SizedBox(
              height: 20,
            ),
            TextField(
              minLines: 3,
              maxLines: 10,
              decoration: InputDecoration(
                  border: OutlineInputBorder(),
                  hintText: 'Paste Copyed Text Here to know is it actually worked'),
            ),
          ],
        ),
      ),
    );
  }
}