Gizzy Berry

Gizzy Berry

1595043303

Conditional Imports Across Flutter and Web

Flutter Web is growing in popularity and it’s becoming more and more mature as the time passes. We’re not there with perfection, there are still some issues but hopefully they’re going to be solved soon!

If you’ve had the chance to fiddle around with a Flutter project that targets you might have found yourself trapped in this situation:

I need this feature, I could use this plugin that already does that, but it doesn’t support Web.

Then you answer yourself something like this:

Well I’ll wrap it into a factory, if kIsWeb is true then I’m on Web and return the Web-compatible instance!

Well, yes. And no. Let’s break this down.

Since I first encountered the problem when adding Auth0 authentication in my app, I’ll take this as our use case.

There is a plugin that allows to use Auth0 on mobile, but it doesn’t support Web. I’d tell you why it’s not that easy to develop a Web part for this, but I’m currently working on a dedicated article which explores the non-triviality of implementing auth0 on Flutter Web and how I’ve found a way to do it. I’ll update this article with the link when it’ll be ready, but for now, since those reasons are not in the scope of this article, let’s talk generally.

So the plugin provides an Auth0 class which allows us to perform the tasks.

We decide to wrap those tasks in another class in order to leverage the factory (and to encapsulate the plugin for architectural reasons, of course).

Our abstract class will be:

abstract class AuthManager {
  static AuthManager _instance;

  static AuthManager get instance {
    if (_instance == null) {
      if (kIsWeb) {
        _instance = Auth0ManagerForWeb();
      } else {
        _instance = Auth0Manager();
      }
    }
    return _instance;
  }
  
  Future<User> login([Map<String, String> authResponse]);
  Future<User> userFromTokens(String idToken, String accessToken);
  Future<void> logout();
}

I didn’t use a factory but a bunch of if just to avoid creating a real factory that we’d throw away afterwards (trust me on it).

#flutter #mobile-apps #web-development

What is GEEK

Buddha Community

Conditional Imports Across Flutter and Web

Google's Flutter 1.20 stable announced with new features - Navoki

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:

Performance improvements for Flutter and Dart

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.

sksl_warm-up

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 for mobile text fields

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.

flutter_autofill

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.

Updated Material Slider, RangeSlider, TimePicker, and DatePicker

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 RangeSliderDatePicker with support for date range and time picker with the new style.

flutter_DatePicker

New pubspec.yaml format

Other 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.

Preview of embedded Dart DevTools in Visual Studio Code

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.

Network tracking

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.

Generate type-safe platform channels for platform interop

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 Dartmethod.

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

Umeng Analytics & Push Flutter Plugins

Umeng Analytics&Push Flutter Plugins(umeng_analytics_push) 

  • Language: English | 中文简体
  • Umeng API: umeng:analytics & umeng:push
  • Tip: From v2.1.0 supported Umeng "Compliance Guide" Android IOS, and made appropriate adjustments to facilitate integration.
  • Note: The following document description shall prevail, do not refer to the settings in the example

Usages

Import

dependencies:
  umeng_analytics_push: ^x.x.x #The latest version is shown above, plugin1.x supports flutter1.x, plugin2.x supports flutter2.x

# Or import through Git (choose one, Git version may be updated more timely)

dependencies:
  umeng_analytics_push:
      git:
        url: https://github.com/zileyuan/umeng_analytics_push.git

Android pretreatment settings (with Kotlin example)

Create a custom FlutterApplication class as the startup class, if the push function is not needed, uemng_message_secret is set to null or ""

package com.demo.umeng.app

import io.flutter.app.FlutterApplication
import io.github.zileyuan.umeng_analytics_push.UmengAnalyticsPushFlutterAndroid

class MyFlutterApplication: FlutterApplication() {
    override fun onCreate() {
        super.onCreate();
        UmengAnalyticsPushFlutterAndroid.androidPreInit(this, "uemng_app_key", "channel", "uemng_message_secret")
    }
}

Modify MainActivity, add Umeng settings

package com.demo.umeng.app

import android.os.Handler
import android.os.Looper
import android.content.Intent
import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant
import io.github.zileyuan.umeng_analytics_push.UmengAnalyticsPushFlutterAndroid
import io.github.zileyuan.umeng_analytics_push.UmengAnalyticsPushPlugin

class MainActivity: FlutterActivity() {
    var handler: Handler = Handler(Looper.myLooper())

    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);
    }

    override fun onNewIntent(intent: Intent) {
        // Actively update and save the intent every time you go back to the front desk, and then you can get the latest intent
        setIntent(intent);
        super.onNewIntent(intent);
    }

    override fun onResume() {
        super.onResume()
        UmengAnalyticsPushFlutterAndroid.androidOnResume(this)
        if (getIntent().getExtras() != null) {
            var message = getIntent().getExtras().getString("message")
            if (message != null && message != "") {
                // To start the interface, wait for the engine to load, and send it to the interface with a delay of 5 seconds
                handler.postDelayed(object : Runnable {
                    override fun run() {
                        UmengAnalyticsPushPlugin.eventSink.success(message)
                    }
                }, 5000)
            }
        }
    }

    override fun onPause() {
        super.onPause()
        UmengAnalyticsPushFlutterAndroid.androidOnPause(this)
    }
}

Modify the AndroidManifest.xml file

<application
  android:name="com.demo.umeng.app.MyFlutterApplication">
</application>

Add the vendor push channel, see the official documentation for details umeng:push:vendor

Modify MyFlutterApplication

package com.demo.umeng.app

import io.flutter.app.FlutterApplication
import io.github.zileyuan.umeng_analytics_push.UmengAnalyticsPushFlutterAndroid

class MyFlutterApplication: FlutterApplication() {
    override fun onCreate() {
        super.onCreate();
        UmengAnalyticsPushFlutterAndroid.androidInit(this, "uemng_app_key", "channel", "uemng_message_secret")
        // Register Xiaomi Push (optional)
        UmengAnalyticsPushFlutterAndroid.registerXiaomi(this, "xiaomi_app_id", "xiaomi_app_key")
        // Register Huawei Push (optional, need add other infomation in AndroidManifest.xml)
        UmengAnalyticsPushFlutterAndroid.registerHuawei(this)
        // Register Oppo Push (optional)
        UmengAnalyticsPushFlutterAndroid.registerOppo(this, "oppo_app_key", "oppo_app_secret")
        // Register Vivo Push (optional, need add other infomation in AndroidManifest.xml)
        UmengAnalyticsPushFlutterAndroid.registerVivo(this)
        // Register Meizu Push (optional)
        UmengAnalyticsPushFlutterAndroid.registerMeizu(this, "meizu_app_id", "meizu_app_key")
    }
}

Modify the AndroidManifest.xml, fill in the real id or key

<application
  android:name="com.demo.umeng.app.MyFlutterApplication">
    <!-- Vivo push channel start (optional) -->
    <meta-data
        android:name="com.vivo.push.api_key"
        android:value="vivo_api_key" />
    <meta-data
        android:name="com.vivo.push.app_id"
        android:value="vivo_app_id" />
    <!-- Vivo push channel end-->

    <!-- Huawei push channel start (optional) -->
    <meta-data
        android:name="com.huawei.hms.client.appid"
        android:value="appid=huawei_app_id" />
    <!-- Huawei push channel end-->
</application>

Use the following parameters to send, accept offline messages

"mipush": true
"mi_activity": "io.github.zileyuan.umeng_analytics_push.OfflineNotifyClickActivity"  

If the App needs to use proguard for obfuscated packaging, please add the following obfuscated code

-dontwarn com.umeng.**
-dontwarn com.taobao.**
-dontwarn anet.channel.**
-dontwarn anetwork.channel.**
-dontwarn org.android.**
-dontwarn org.apache.thrift.**
-dontwarn com.xiaomi.**
-dontwarn com.huawei.**
-dontwarn com.meizu.**

-keepattributes *Annotation*

-keep class com.taobao.** {*;}
-keep class org.android.** {*;}
-keep class anet.channel.** {*;}
-keep class com.umeng.** {*;}
-keep class com.xiaomi.** {*;}
-keep class com.huawei.** {*;}
-keep class com.meizu.** {*;}
-keep class org.apache.thrift.** {*;}

-keep class com.alibaba.sdk.android.** {*;}
-keep class com.ut.** {*;}
-keep class com.ta.** {*;}

-keep public class **.R$* {
    public static final int *;
}

IOS pretreatment settings (with Swift example)

Modify AppDelegate.swift file

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
    override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        GeneratedPluginRegistrant.register(with: self)
        UmengAnalyticsPushFlutterIos.iosPreInit(launchOptions, appkey:"uemng_app_key", channel:"appstore");
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }

    // If you need to handle Push clicks, use the following code
    @available(iOS 10.0, *)
    override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        let userInfo = response.notification.request.content.userInfo
        UmengAnalyticsPushFlutterIos.handleMessagePush(userInfo)
        completionHandler()
    }
}

Modify Runner-Bridging-Header.h file

#import "GeneratedPluginRegistrant.h"
#import <UMCommon/UMCommon.h>
#import <UMCommon/MobClick.h>
#import <UMPush/UMessage.h>
#import <UserNotifications/UserNotifications.h>
#import <umeng_analytics_push/UmengAnalyticsPushIos.h>

Use in Flutter

Initialize Umeng, call it after agreeing to the "Privacy Policy" according to the "Compliance Guide", two parameter switches, one is log, the other is push

import 'package:umeng_analytics_push/umeng_analytics_push.dart';

UmengAnalyticsPush.initUmeng(false, true);

Click Push response

import 'package:umeng_analytics_push/umeng_analytics_push.dart';
import 'package:umeng_analytics_push/message_model.dart';

UmengAnalyticsPush.addPushMessageCallback((MessageModel message) {
  print("UmengAnalyticsPush Message ======> $message");
});

Operation Alias

import 'package:umeng_analytics_push/umeng_analytics_push.dart';

UmengAnalyticsPush.addAlias('1001', 'jobcode');
UmengAnalyticsPush.setAlias('1002', 'jobcode');
UmengAnalyticsPush.deleteAlias('1002', 'jobcode');

Operation Tags

import 'package:umeng_analytics_push/umeng_analytics_push.dart';

UmengAnalyticsPush.addTags('manager');
UmengAnalyticsPush.deleteTags('manager');

Page buried point operation

import 'package:umeng_analytics_push/umeng_analytics_push.dart';

UmengAnalyticsPush.pageStart('memberPage');
UmengAnalyticsPush.pageEnd('memberPage');

Custom event

import 'package:umeng_analytics_push/umeng_analytics_push.dart';

UmengAnalyticsPush.event('customEvent', '1000');

Use this package as a library

Depend on it

Run this command:

With Flutter:

 $ flutter pub add umeng_analytics_push

This will add a line like this to your package's pubspec.yaml (and run an implicit flutter pub get):

dependencies:
  umeng_analytics_push: ^2.1.3

Alternatively, your editor might support or flutter pub get. Check the docs for your editor to learn more.

Import it

Now in your Dart code, you can use:

import 'package:umeng_analytics_push/umeng_analytics_push.dart';

example/lib/main.dart

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
        ),
      ),
    );
  }
} 

Download Details:

Author: zileyuan

Source Code: https://github.com/zileyuan/umeng_analytics_push

#flutter #analytics 

Terry  Tremblay

Terry Tremblay

1598396940

What is Flutter and why you should learn it?

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-mobile-desktop-web-embedded_min

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.

Flutter meaning?

What is Flutter? this question comes to many new developer’s mind.

humming_bird_dart_flutter

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.

Where Flutter is used?

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

Dream11

Dream11

NuBank

NuBank

Reflectly app

Reflectly app

Abbey Road Studios

Abbey Road Studios

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.

Flutter as a service

#dart #flutter #uncategorized #flutter framework #flutter jobs #flutter language #flutter meaning #flutter meaning in hindi #google flutter #how does flutter work #what is flutter

Punith Raaj

1640672627

Flutter Hotel Booking UI - Book your Stay At A New Hotel With Flutter - Ep1

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

Adobe XD plugin for Flutter with CodePen Tutorial

Recently Adobe XD releases a new version of the plugin that you can use to export designs directly into flutter widgets or screens. Yes, you read it right, now you can make and export your favorite design in Adobe XD and export all the design in the widget form or as a full-screen design, this can save you a lot of time required in designing.

What we will do?
I will make a simple design of a dialogue box with a card design with text over it as shown below. After you complete this exercise you can experiment with the UI. You can make your own components or import UI kits available with the Adobe XD.

#developers #flutter #adobe xd design export to flutter #adobe xd flutter code #adobe xd flutter code generator - plugin #adobe xd flutter plugin #adobe xd flutter plugin tutorial #adobe xd plugins #adobe xd to flutter #adobe xd tutorial #codepen for flutter.