How to create Dynamic Link using firebase in Flutter

 

Dynamic Linking

First, You set Firebase in the Flutter Project, then use this code.

According to the need to modify this code.

import 'dart:async';

import 'package:firebase_dynamic_links/firebase_dynamic_links.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';



class DynamicLinkWidget extends StatefulWidget {
  const DynamicLinkWidget({Key? key}) : super(key: key);


  @override
  State<DynamicLinkWidget> createState() => _DynamicLinkWidgetState();
}

class _DynamicLinkWidgetState extends State<DynamicLinkWidget>{

  String? _linkMessage;
  bool _isCreatingLink = false;

  final FirebaseDynamicLinks dynamicLinks = FirebaseDynamicLinks.instance;


  final String DynamicLink = 'https://www.goggle.com?screen=${loginRoute.toString()}';
  final String Link = 'https://astscm.page.link';


  @override
  void initState() {
    super.initState();
    initDynamicLinks();
  }

  Future<void> initDynamicLinks() async {
    dynamicLinks.onLink.listen((data) {
      print(data.link.queryParameters.values.first);
      Navigator.pushNamed(context, data.link.queryParameters.values.first);
    }).onError((error) {
      print('onLink error');
      print(error.message);
    });
  }






  Future<void> _createDynamicLink(bool short) async {
    setState(() {
      _isCreatingLink = true;
    });

    final DynamicLinkParameters parameters = DynamicLinkParameters(
      uriPrefix: 'https://astscm.page.link',
      longDynamicLink: Uri.parse(
        '$dynamicLinks',
      ),
      link: Uri.parse(DynamicLink),
      androidParameters: const AndroidParameters(
        packageName: 'com.example.app',
        minimumVersion: 20,
      ),
    /*  iosParameters: const IOSParameters(
        bundleId: 'io.flutter.plugins.firebase.dynamiclinksexample',
        minimumVersion: '0',
      ),*/
    );


    Uri url;
    if (short) {
      final ShortDynamicLink shortLink =
      await dynamicLinks.buildShortLink(parameters);
      url = shortLink.shortUrl;
    } else {
      url = await dynamicLinks.buildLink(parameters);
    }

    setState(() {
      _linkMessage = url.toString();
      _isCreatingLink = false;
    });
  }

  Future<String> createDynamic() async{
  final dynamicLinkParams = DynamicLinkParameters(
    link: Uri.parse("$DynamicLink"),
    uriPrefix: "https://app.page.link",
    androidParameters: const AndroidParameters(packageName: "com.example.app"),

  );
  final dynamicLink =
      await FirebaseDynamicLinks.instance.buildLink(dynamicLinkParams);
return dynamicLink.toString();
}







  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [

            
            ElevatedButton(
              onPressed: ()async {
                final PendingDynamicLinkData? data =
                await dynamicLinks.getInitialLink();
                final Uri? deepLink = data?.link;
           var l=   await  createDynamic();
           setState(() {
             _linkMessage=l.toString();
           });
               print("${deepLink.toString()}");
                print("link:${_linkMessage}");

                if (deepLink != null) {
                  // ignore: unawaited_futures
            Navigator.push(context, MaterialPageRoute(builder: (context)=>ScreenName()));

                }
              },
              child: SelectableText("link:${_linkMessage.toString()}",
                cursorColor: Colors.red,
                showCursor: true,
                toolbarOptions: ToolbarOptions(
                    copy: true,
                    selectAll: true,
                    cut: false,
                    paste: false
                ),)
            ),
            ElevatedButton(
              onPressed: () async {
                print("${_linkMessage.toString()}");
                initDynamicLinks();
                _createDynamicLink(true);
               /* if (_linkMessage != null) {
                //  await launchUrl(Uri.parse(_linkMessage!));
                  print("${_linkMessage.toString()}");
                }*/
              },
              onLongPress: () {
                if (_linkMessage != null) {
                  Clipboard.setData(ClipboardData(text: _linkMessage!));
                  ScaffoldMessenger.of(context).showSnackBar(
                    const SnackBar(content: Text('Copied Link!')),
                  );
                  print(_linkMessage.toString());
                }
              },
              child: Text("onCreate"),
            ),
          ],
        )


      )


    );
  }
}

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