1647080820
En este artículo, crearemos una aplicación Flutter con las funciones de escanear el código QR con la cámara, generar el código QR con datos de texto y compartir el archivo de imagen del código QR con otras aplicaciones utilizando el mecanismo de intercambio de imágenes específico de la plataforma para iOS y Android.
En qué consiste nuestra aplicación:
Las dependencias del complemento del archivo pubspec.yaml de nuestro proyecto consisten en:
dependencies:
....
path_provider: 0.4.1
barcode_scan: ^0.0.4
qr_flutter: ^1.1.1
El widget de la pantalla de inicio de nuestra aplicación permite al usuario seleccionar si desea escanear o generar un código QR tocando el botón. El widget de compilación devuelve una columna con 2 botones elevados como elementos secundarios, uno para el enrutamiento a la pantalla de generación de códigos QR y otro para el enrutamiento a la pantalla de escaneo de códigos QR cuando se toca el botón.
import 'package:flutter/material.dart';
import 'package:qr_scanner_generator/scan.dart';
import 'package:qr_scanner_generator/generate.dart';
import 'package:flutter/rendering.dart';
class HomeScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text('QR Code Scanner & Generator'),
),
body: Center(
child:
Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
child: RaisedButton(
color: Colors.blue,
textColor: Colors.white,
splashColor: Colors.blueGrey,
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => Scan()),
);
},
child: const Text('SCAN QR CODE')
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
child: RaisedButton(
color: Colors.blue,
textColor: Colors.white,
splashColor: Colors.blueGrey,
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => GenerateScreen()),
);
},
child: const Text('GENERATE QR CODE')
),
),
],
)
),
);
}
}
El widget de pantalla de escaneo muestra el escaneo de inicio con el botón de la cámara y un
widget de texto que muestra el resultado del escaneo del código QR de la cámara. Utiliza el widget de columna como padre para los hijos de texto y botón.
Cuando el usuario toca el botón, se invoca la función de escaneo asíncrono. Utilizará la clase BarcodeScanner de las dependencias del complemento barcode_scanner para iniciar el visor de la cámara tanto en iOS como en Android para que el usuario apunte y escanee el código QR.
Si se encuentra el código QR, se devolverá el resultado del texto y se asignará a la variable de instancia del código de barras dentro de la función setState que activará la representación del widget. La variable de instancia del código de barras se asignará a Text Widget para mostrar el resultado del escaneo del código QR. Si ocurre un error, simplemente establecemos la propiedad del código de barras con el mensaje de error.
import 'dart:async';
import 'package:barcode_scan/barcode_scan.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class ScanScreen extends StatefulWidget {
@override
_ScanState createState() => new _ScanState();
}
class _ScanState extends State<ScanScreen> {
String barcode = "";
@override
initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: new AppBar(
title: new Text('QR Code Scanner'),
),
body: new Center(
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
child: RaisedButton(
color: Colors.blue,
textColor: Colors.white,
splashColor: Colors.blueGrey,
onPressed: scan,
child: const Text('START CAMERA SCAN')
),
)
,
Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
child: Text(barcode, textAlign: TextAlign.center,),
)
,
],
),
));
}
Future scan() async {
try {
String barcode = await BarcodeScanner.scan();
setState(() => this.barcode = barcode);
} on PlatformException catch (e) {
if (e.code == BarcodeScanner.CameraAccessDenied) {
setState(() {
this.barcode = 'The user did not grant the camera permission!';
});
} else {
setState(() => this.barcode = 'Unknown error: $e');
}
} on FormatException{
setState(() => this.barcode = 'null (User returned using the "back"-button before scanning anything. Result)');
} catch (e) {
setState(() => this.barcode = 'Unknown error: $e');
}
}
}
El widget de pantalla Generar muestra un campo de texto para que el usuario ingrese los datos de texto que se usarán para generar el widget de código QR usando el complemento qr_flutter cuando el usuario toque el botón Enviar. También proporciona un botón Compartir en la barra de navegación para compartir el archivo de imagen png con otras aplicaciones en iOS y Android.
Cuando el usuario haya llenado el TextField y toque el botón Enviar, asignamos el valor de la propiedad _dataString dentro del método setState que activará la representación del widget. Nuestro Widget pasará la propiedad _dataString al widget QrImage que procesará el texto y renderizará el qr usando el pintor de qr personalizado. Envolvemos QRImage dentro del widget RepaintBoundary con una propiedad GlobalKey para que podamos obtener RenderRepaintBoundary más tarde con la clave y usar el método integrado Flutter to Image en el widget RenderRepaintBoundary que convertirá el widget en un archivo png.
import 'package:flutter/material.dart';
import 'package:qr_flutter/qr_flutter.dart';
import 'package:flutter/services.dart';
import 'dart:async';
import 'dart:typed_data';
import 'dart:ui';
import 'dart:io';
import 'package:flutter/rendering.dart';
import 'package:path_provider/path_provider.dart';
class GenerateScreen extends StatefulWidget {
@override
State<StatefulWidget> createState() => GenerateScreenState();
}
class GenerateScreenState extends State<GenerateScreen> {
static const double _topSectionTopPadding = 50.0;
static const double _topSectionBottomPadding = 20.0;
static const double _topSectionHeight = 50.0;
GlobalKey globalKey = new GlobalKey();
String _dataString = "Hello from this QR";
String _inputErrorText;
final TextEditingController _textController = TextEditingController();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('QR Code Generator'),
actions: <Widget>[
IconButton(
icon: Icon(Icons.share),
onPressed: _captureAndSharePng,
)
],
),
body: _contentWidget(),
);
}
Future<void> _captureAndSharePng() async {
try {
RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject();
var image = await boundary.toImage();
ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
Uint8List pngBytes = byteData.buffer.asUint8List();
final tempDir = await getTemporaryDirectory();
final file = await new File('${tempDir.path}/image.png').create();
await file.writeAsBytes(pngBytes);
final channel = const MethodChannel('channel:me.alfian.share/share');
channel.invokeMethod('shareFile', 'image.png');
} catch(e) {
print(e.toString());
}
}
_contentWidget() {
final bodyHeight = MediaQuery.of(context).size.height - MediaQuery.of(context).viewInsets.bottom;
return Container(
color: const Color(0xFFFFFFFF),
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.only(
top: _topSectionTopPadding,
left: 20.0,
right: 10.0,
bottom: _topSectionBottomPadding,
),
child: Container(
height: _topSectionHeight,
child: Row(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Expanded(
child: TextField(
controller: _textController,
decoration: InputDecoration(
hintText: "Enter a custom message",
errorText: _inputErrorText,
),
),
),
Padding(
padding: const EdgeInsets.only(left: 10.0),
child: FlatButton(
child: Text("SUBMIT"),
onPressed: () {
setState((){
_dataString = _textController.text;
_inputErrorText = null;
});
},
),
)
],
),
),
),
Expanded(
child: Center(
child: RepaintBoundary(
key: globalKey,
child: QrImage(
data: _dataString,
size: 0.5 * bodyHeight,
onError: (ex) {
print("[QR] ERROR - $ex");
setState((){
_inputErrorText = "Error! Maybe your input value is too long?";
});
},
),
),
),
),
],
),
);
}
}
Genere una imagen PNG de código QR y comparta con el canal específico de la plataforma
Cuando el usuario toca el botón para compartir, invocamos la función _captureAndSharePng que obtendrá el objeto RepaintBoundary con GlobalKey pasado al widget RepaintBoundary. Luego llamamos al método toImage que convertirá el widget en un objeto de imagen y convertirá el objeto de imagen usando toByteData con formato png.
Después de eso, obtenemos los datos de bytes, obtenemos el directorio temporal de la aplicación y guardamos los datos dentro del directorio temporal. Para compartir la imagen, utilizaremos el método API de canal específico de la plataforma que pasará la ruta de la imagen y llamará a shareImage en cada plataforma para iOS y Android.
Necesitamos agregar nuestra función shareImage en cada proyecto de plataforma, puede consultar esta publicación de desbordamiento de pila sobre cómo integrar tanto en iOS como en Android. https://stackoverflow.com/questions/44181343/how-do-i-share-an-image-on-ios-and-android-using-flutter .
En iOS se usará UIActivityViewController y en Android usará Intent.ACTION_SEND para enviar el archivo de imagen, ambos obtendrán el archivo del directorio temporal usando la ruta de la imagen pasada.
Future<void> _captureAndSharePng() async {
try {
RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject();
var image = await boundary.toImage();
ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
Uint8List pngBytes = byteData.buffer.asUint8List(); final tempDir = await getTemporaryDirectory();
final file = await new File('${tempDir.path}/image.png').create();
await file.writeAsBytes(pngBytes);
final channel = const MethodChannel('channel:me.alfian.share/share');
channel.invokeMethod('shareFile', 'image.png');
} catch(e) {
print(e.toString());
}
}
Es una envoltura. Hemos creado la aplicación Flutter con la capacidad de escanear, generar y compartir códigos QR que funcionan tanto en iOS como en Android. La API de canal específico de la plataforma Flutter nos facilita el uso de bibliotecas nativas, como el escáner de códigos QR, el uso compartido de imágenes y la comunicación del resultado a la aplicación Flutter.
El código fuente del proyecto está disponible en el repositorio de GitHub .
1597014000
Flutter Google cross-platform UI framework has released a new version 1.20 stable.
Flutter is Google’s UI framework to make apps for Android, iOS, Web, Windows, Mac, Linux, and Fuchsia OS. Since the last 2 years, the flutter Framework has already achieved popularity among mobile developers to develop Android and iOS apps. In the last few releases, Flutter also added the support of making web applications and desktop applications.
Last month they introduced the support of the Linux desktop app that can be distributed through Canonical Snap Store(Snapcraft), this enables the developers to publish there Linux desktop app for their users and publish on Snap Store. If you want to learn how to Publish Flutter Desktop app in Snap Store that here is the tutorial.
Flutter 1.20 Framework is built on Google’s made Dart programming language that is a cross-platform language providing native performance, new UI widgets, and other more features for the developer usage.
Here are the few key points of this release:
In this release, they have got multiple performance improvements in the Dart language itself. A new improvement is to reduce the app size in the release versions of the app. Another performance improvement is to reduce junk in the display of app animation by using the warm-up phase.
If your app is junk information during the first run then the Skia Shading Language shader provides for pre-compilation as part of your app’s build. This can speed it up by more than 2x.
Added a better support of mouse cursors for web and desktop flutter app,. Now many widgets will show cursor on top of them or you can specify the type of supported cursor you want.
Autofill was already supported in native applications now its been added to the Flutter SDK. Now prefilled information stored by your OS can be used for autofill in the application. This feature will be available soon on the flutter web.
A new widget for interaction
InteractiveViewer
is a new widget design for common interactions in your app like pan, zoom drag and drop for resizing the widget. Informations on this you can check more on this API documentation where you can try this widget on the DartPad. In this release, drag-drop has more features added like you can know precisely where the drop happened and get the position.
In this new release, there are many pre-existing widgets that were updated to match the latest material guidelines, these updates include better interaction with Slider
and RangeSlider
, DatePicker
with support for date range and time picker with the new style.
pubspec.yaml
formatOther than these widget updates there is some update within the project also like in pubspec.yaml
file format. If you are a flutter plugin publisher then your old pubspec.yaml
is no longer supported to publish a plugin as the older format does not specify for which platform plugin you are making. All existing plugin will continue to work with flutter apps but you should make a plugin update as soon as possible.
Visual Studio code flutter extension got an update in this release. You get a preview of new features where you can analyze that Dev tools in your coding workspace. Enable this feature in your vs code by _dart.previewEmbeddedDevTools_
setting. Dart DevTools menu you can choose your favorite page embed on your code workspace.
The updated the Dev tools comes with the network page that enables network profiling. You can track the timings and other information like status and content type of your** network calls** within your app. You can also monitor gRPC traffic.
Pigeon is a command-line tool that will generate types of safe platform channels without adding additional dependencies. With this instead of manually matching method strings on platform channel and serializing arguments, you can invoke native class and pass nonprimitive data objects by directly calling the Dart
method.
There is still a long list of updates in the new version of Flutter 1.2 that we cannot cover in this blog. You can get more details you can visit the official site to know more. Also, you can subscribe to the Navoki newsletter to get updates on these features and upcoming new updates and lessons. In upcoming new versions, we might see more new features and improvements.
You can get more free Flutter tutorials you can follow these courses:
#dart #developers #flutter #app developed #dart devtools in visual studio code #firebase local emulator suite in flutter #flutter autofill #flutter date picker #flutter desktop linux app build and publish on snapcraft store #flutter pigeon #flutter range slider #flutter slider #flutter time picker #flutter tutorial #flutter widget #google flutter #linux #navoki #pubspec format #setup flutter desktop on windows
1598396940
Flutter is an open-source UI toolkit for mobile developers, so they can use it to build native-looking** Android and iOS** applications from the same code base for both platforms. Flutter is also working to make Flutter apps for Web, PWA (progressive Web-App) and Desktop platform (Windows,macOS,Linux).
Flutter was officially released in December 2018. Since then, it has gone a much stronger flutter community.
There has been much increase in flutter developers, flutter packages, youtube tutorials, blogs, flutter examples apps, official and private events, and more. Flutter is now on top software repos based and trending on GitHub.
What is Flutter? this question comes to many new developer’s mind.
Flutter means flying wings quickly, and lightly but obviously, this doesn’t apply in our SDK.
So Flutter was one of the companies that were acquired by **Google **for around $40 million. That company was based on providing gesture detection and recognition from a standard webcam. But later when the Flutter was going to release in alpha version for developer it’s name was Sky, but since Google already owned Flutter name, so they rename it to Flutter.
Flutter is used in many startup companies nowadays, and even some MNCs are also adopting Flutter as a mobile development framework. Many top famous companies are using their apps in Flutter. Some of them here are
and many more other apps. Mobile development companies also adopted Flutter as a service for their clients. Even I was one of them who developed flutter apps as a freelancer and later as an IT company for mobile apps.
#dart #flutter #uncategorized #flutter framework #flutter jobs #flutter language #flutter meaning #flutter meaning in hindi #google flutter #how does flutter work #what is flutter
1647080820
En este artículo, crearemos una aplicación Flutter con las funciones de escanear el código QR con la cámara, generar el código QR con datos de texto y compartir el archivo de imagen del código QR con otras aplicaciones utilizando el mecanismo de intercambio de imágenes específico de la plataforma para iOS y Android.
En qué consiste nuestra aplicación:
Las dependencias del complemento del archivo pubspec.yaml de nuestro proyecto consisten en:
dependencies:
....
path_provider: 0.4.1
barcode_scan: ^0.0.4
qr_flutter: ^1.1.1
El widget de la pantalla de inicio de nuestra aplicación permite al usuario seleccionar si desea escanear o generar un código QR tocando el botón. El widget de compilación devuelve una columna con 2 botones elevados como elementos secundarios, uno para el enrutamiento a la pantalla de generación de códigos QR y otro para el enrutamiento a la pantalla de escaneo de códigos QR cuando se toca el botón.
import 'package:flutter/material.dart';
import 'package:qr_scanner_generator/scan.dart';
import 'package:qr_scanner_generator/generate.dart';
import 'package:flutter/rendering.dart';
class HomeScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
centerTitle: true,
title: Text('QR Code Scanner & Generator'),
),
body: Center(
child:
Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
child: RaisedButton(
color: Colors.blue,
textColor: Colors.white,
splashColor: Colors.blueGrey,
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => Scan()),
);
},
child: const Text('SCAN QR CODE')
),
),
Padding(
padding: EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
child: RaisedButton(
color: Colors.blue,
textColor: Colors.white,
splashColor: Colors.blueGrey,
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => GenerateScreen()),
);
},
child: const Text('GENERATE QR CODE')
),
),
],
)
),
);
}
}
El widget de pantalla de escaneo muestra el escaneo de inicio con el botón de la cámara y un
widget de texto que muestra el resultado del escaneo del código QR de la cámara. Utiliza el widget de columna como padre para los hijos de texto y botón.
Cuando el usuario toca el botón, se invoca la función de escaneo asíncrono. Utilizará la clase BarcodeScanner de las dependencias del complemento barcode_scanner para iniciar el visor de la cámara tanto en iOS como en Android para que el usuario apunte y escanee el código QR.
Si se encuentra el código QR, se devolverá el resultado del texto y se asignará a la variable de instancia del código de barras dentro de la función setState que activará la representación del widget. La variable de instancia del código de barras se asignará a Text Widget para mostrar el resultado del escaneo del código QR. Si ocurre un error, simplemente establecemos la propiedad del código de barras con el mensaje de error.
import 'dart:async';
import 'package:barcode_scan/barcode_scan.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class ScanScreen extends StatefulWidget {
@override
_ScanState createState() => new _ScanState();
}
class _ScanState extends State<ScanScreen> {
String barcode = "";
@override
initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: new AppBar(
title: new Text('QR Code Scanner'),
),
body: new Center(
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
child: RaisedButton(
color: Colors.blue,
textColor: Colors.white,
splashColor: Colors.blueGrey,
onPressed: scan,
child: const Text('START CAMERA SCAN')
),
)
,
Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
child: Text(barcode, textAlign: TextAlign.center,),
)
,
],
),
));
}
Future scan() async {
try {
String barcode = await BarcodeScanner.scan();
setState(() => this.barcode = barcode);
} on PlatformException catch (e) {
if (e.code == BarcodeScanner.CameraAccessDenied) {
setState(() {
this.barcode = 'The user did not grant the camera permission!';
});
} else {
setState(() => this.barcode = 'Unknown error: $e');
}
} on FormatException{
setState(() => this.barcode = 'null (User returned using the "back"-button before scanning anything. Result)');
} catch (e) {
setState(() => this.barcode = 'Unknown error: $e');
}
}
}
El widget de pantalla Generar muestra un campo de texto para que el usuario ingrese los datos de texto que se usarán para generar el widget de código QR usando el complemento qr_flutter cuando el usuario toque el botón Enviar. También proporciona un botón Compartir en la barra de navegación para compartir el archivo de imagen png con otras aplicaciones en iOS y Android.
Cuando el usuario haya llenado el TextField y toque el botón Enviar, asignamos el valor de la propiedad _dataString dentro del método setState que activará la representación del widget. Nuestro Widget pasará la propiedad _dataString al widget QrImage que procesará el texto y renderizará el qr usando el pintor de qr personalizado. Envolvemos QRImage dentro del widget RepaintBoundary con una propiedad GlobalKey para que podamos obtener RenderRepaintBoundary más tarde con la clave y usar el método integrado Flutter to Image en el widget RenderRepaintBoundary que convertirá el widget en un archivo png.
import 'package:flutter/material.dart';
import 'package:qr_flutter/qr_flutter.dart';
import 'package:flutter/services.dart';
import 'dart:async';
import 'dart:typed_data';
import 'dart:ui';
import 'dart:io';
import 'package:flutter/rendering.dart';
import 'package:path_provider/path_provider.dart';
class GenerateScreen extends StatefulWidget {
@override
State<StatefulWidget> createState() => GenerateScreenState();
}
class GenerateScreenState extends State<GenerateScreen> {
static const double _topSectionTopPadding = 50.0;
static const double _topSectionBottomPadding = 20.0;
static const double _topSectionHeight = 50.0;
GlobalKey globalKey = new GlobalKey();
String _dataString = "Hello from this QR";
String _inputErrorText;
final TextEditingController _textController = TextEditingController();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('QR Code Generator'),
actions: <Widget>[
IconButton(
icon: Icon(Icons.share),
onPressed: _captureAndSharePng,
)
],
),
body: _contentWidget(),
);
}
Future<void> _captureAndSharePng() async {
try {
RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject();
var image = await boundary.toImage();
ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
Uint8List pngBytes = byteData.buffer.asUint8List();
final tempDir = await getTemporaryDirectory();
final file = await new File('${tempDir.path}/image.png').create();
await file.writeAsBytes(pngBytes);
final channel = const MethodChannel('channel:me.alfian.share/share');
channel.invokeMethod('shareFile', 'image.png');
} catch(e) {
print(e.toString());
}
}
_contentWidget() {
final bodyHeight = MediaQuery.of(context).size.height - MediaQuery.of(context).viewInsets.bottom;
return Container(
color: const Color(0xFFFFFFFF),
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.only(
top: _topSectionTopPadding,
left: 20.0,
right: 10.0,
bottom: _topSectionBottomPadding,
),
child: Container(
height: _topSectionHeight,
child: Row(
mainAxisSize: MainAxisSize.max,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Expanded(
child: TextField(
controller: _textController,
decoration: InputDecoration(
hintText: "Enter a custom message",
errorText: _inputErrorText,
),
),
),
Padding(
padding: const EdgeInsets.only(left: 10.0),
child: FlatButton(
child: Text("SUBMIT"),
onPressed: () {
setState((){
_dataString = _textController.text;
_inputErrorText = null;
});
},
),
)
],
),
),
),
Expanded(
child: Center(
child: RepaintBoundary(
key: globalKey,
child: QrImage(
data: _dataString,
size: 0.5 * bodyHeight,
onError: (ex) {
print("[QR] ERROR - $ex");
setState((){
_inputErrorText = "Error! Maybe your input value is too long?";
});
},
),
),
),
),
],
),
);
}
}
Genere una imagen PNG de código QR y comparta con el canal específico de la plataforma
Cuando el usuario toca el botón para compartir, invocamos la función _captureAndSharePng que obtendrá el objeto RepaintBoundary con GlobalKey pasado al widget RepaintBoundary. Luego llamamos al método toImage que convertirá el widget en un objeto de imagen y convertirá el objeto de imagen usando toByteData con formato png.
Después de eso, obtenemos los datos de bytes, obtenemos el directorio temporal de la aplicación y guardamos los datos dentro del directorio temporal. Para compartir la imagen, utilizaremos el método API de canal específico de la plataforma que pasará la ruta de la imagen y llamará a shareImage en cada plataforma para iOS y Android.
Necesitamos agregar nuestra función shareImage en cada proyecto de plataforma, puede consultar esta publicación de desbordamiento de pila sobre cómo integrar tanto en iOS como en Android. https://stackoverflow.com/questions/44181343/how-do-i-share-an-image-on-ios-and-android-using-flutter .
En iOS se usará UIActivityViewController y en Android usará Intent.ACTION_SEND para enviar el archivo de imagen, ambos obtendrán el archivo del directorio temporal usando la ruta de la imagen pasada.
Future<void> _captureAndSharePng() async {
try {
RenderRepaintBoundary boundary = globalKey.currentContext.findRenderObject();
var image = await boundary.toImage();
ByteData byteData = await image.toByteData(format: ImageByteFormat.png);
Uint8List pngBytes = byteData.buffer.asUint8List(); final tempDir = await getTemporaryDirectory();
final file = await new File('${tempDir.path}/image.png').create();
await file.writeAsBytes(pngBytes);
final channel = const MethodChannel('channel:me.alfian.share/share');
channel.invokeMethod('shareFile', 'image.png');
} catch(e) {
print(e.toString());
}
}
Es una envoltura. Hemos creado la aplicación Flutter con la capacidad de escanear, generar y compartir códigos QR que funcionan tanto en iOS como en Android. La API de canal específico de la plataforma Flutter nos facilita el uso de bibliotecas nativas, como el escáner de códigos QR, el uso compartido de imágenes y la comunicación del resultado a la aplicación Flutter.
El código fuente del proyecto está disponible en el repositorio de GitHub .
1644991598
The Ultimate Guide To Tik Tok Clone App With Firebase - Ep 2
In this video, I'm going to show you how to make a Cool Tik Tok App a new Instagram using Flutter,firebase and visual studio code.
In this tutorial, you will learn how to Upload a Profile Pic to Firestore Data Storage.
🚀 Nice, clean and modern TikTok Clone #App #UI made in #Flutter⚠️
Starter Project : https://github.com/Punithraaj/Flutter_Tik_Tok_Clone_App/tree/Episode1
► Timestamps
0:00 Intro 0:20
Upload Profile Screen
16:35 Image Picker
20:06 Image Cropper
24:25 Firestore Data Storage Configuration.
⚠️ IMPORTANT: If you want to learn, I strongly advise you to watch the video at a slow speed and try to follow the code and understand what is done, without having to copy the code, and then download it from GitHub.
► Social Media
GitHub: https://github.com/Punithraaj/Flutter_Tik_Tok_Clone_App.git
LinkedIn: https://www.linkedin.com/in/roaring-r...
Twitter: https://twitter.com/roaringraaj
Facebook: https://www.facebook.com/flutterdartacademy
► Previous Episode : https://youtu.be/QnL3fr-XpC4
► Playlist: https://youtube.com/playlist?list=PL6vcAuTKAaYe_9KQRsxTsFFSx78g1OluK
I hope you liked it, and don't forget to like,comment, subscribe, share this video with your friends, and star the repository on GitHub!
⭐️ Thanks for watching the video and for more updates don't forget to click on the notification.
⭐️Please comment your suggestion for my improvement.
⭐️Remember to like, subscribe, share this video, and star the repo on Github :)
Hope you enjoyed this video!
If you loved it, you can Buy me a coffee : https://www.buymeacoffee.com/roaringraaj
LIKE & SHARE & ACTIVATE THE BELL Thanks For Watching :-)
https://youtu.be/F_GgZVD4sDk
#flutter tutorial - tiktok clone with firebase #flutter challenge @tiktokclone #fluttertutorial firebase #flutter firebase #flutter pageview #morioh #flutter
1640672627
https://youtu.be/-tHUmjIkGJ4
Flutter Hotel Booking UI - Book your Stay At A New Hotel With Flutter - Ep1
#flutter #fluttertravelapp #hotelbookingui #flutter ui design
In this video, I'm going to show you how to make a Cool Hotel Booking App using Flutter and visual studio code.
In this tutorial, you will learn how to create a Splash Screen and Introduction Screen, how to implement a SmoothPageIndicator in Flutter.
🚀 Nice, clean and modern Hotel Booking #App #UI made in #Flutter
⚠️ IMPORTANT: If you want to learn, I strongly advise you to watch the video at a slow speed and try to follow the code and understand what is done, without having to copy the code, and then download it from GitHub.
► Social Media
GitHub: https://github.com/Punithraaj
LinkedIn: https://www.linkedin.com/in/roaring-r...
Twitter: https://twitter.com/roaringraaj
Facebook: https://www.facebook.com/flutterdartacademy
I hope you liked it, and don't forget to like,comment, subscribe, share this video with your friends, and star the repository on GitHub!
⭐️ Thanks for watching the video and for more updates don't forget to click on the notification.⭐️Please comment your suggestion for my improvement. ⭐️Remember to like, subscribe, share this video, and star the repo on Github :)Hope you enjoyed this video! If you loved it, you can Buy me a coffee : https://www.buymeacoffee.com/roaringraaj
#flutter riverpod #flutter travel app #appointment app flutter #morioh