Ellis Herbert

Ellis Herbert

1595290500

A new Flutter project.just for learning

hsk_flutter

A new Flutter project.just for learning

Getting Started

This project is a starting point for a Flutter application.

A few resources to get you started if this is your first Flutter project:

For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

    • 1. Master the basic grammar of dart
    • 2. Master the basic components of flutter
    • 3. Generation and release of apk and ipa packages

Project operating environment

1\. Flutter version 1.17.5
2\. Dart version 2.8.4

Use of common frameworks

  • Encapsulation of network requests
  • Local data storage shared_preferences
  • Common bullet frame fluttertoast
  • State management flutter_redux
  • Scroll map flutter_swiper
  • Route jump flutter_fluro

important point:

 StatelessWidget和StatefulWidget是flutter的基础组件,日常开发中自定义Widget都是选择继承这两者之一
 两者的区别在于状态的改变,StatelessWidget面向那些始终不变的UI控件,比如标题栏中的标题;
 StatefulWidget则是面向可能会改变UI状态的控件,比如有点击反馈的按钮

//aims

  • 1 Implementation of the navigation bar
  • 2 Implementation of tabbar
  • 3 Use of refresh components
  • 4 Use of scrolling components

//Loading of local pictures

Common components

  • //Container components and visual components Container Row Column
  • 1-ListView() scrolling container component
  • 2-Grid Layout-GridView
  • 3-Implementation of pull-down refresh
  • 4 -

Component life cycle

  • 1 initialization
  • 2 State changes
  • 3 Remove components

Flutter gesture learning

  • onTapDown: (details) {},

  • onTapUp: (details) {},

  • onTap: () {},

  • onTapCancel: () {},

  • onDoubleTap: () {},

  • onLongPress: () {},

  • onLongPressStart: () {},

  • onLongPressMoveUpdate: () {},

  • onLongPressUp: () {},

  • onLongPressEnd: () {},

//Common attributes

  • GridView({ Key key, Axis scrollDirection = Axis.vertical, bool reverse = false, ScrollController controller, ScrollPhysics physics, bool shrinkWrap = false, EdgeInsetsGeometry padding, @required this.gridDelegate, double cacheExtent, List children = const [], })

  • ListView({ Axis scrollDirection = Axis.vertical, ScrollController controller, ScrollPhysics physics, bool shrinkWrap = false, EdgeInsetsGeometry padding, this.itemExtent, double cacheExtent, List children = const [], })

Custom component

  • The Flutter framework provides us with two abstract classes, StatelessWidget and StatefulWidget, for custom controls

  • StatelessWidget is a “stateless control”, an immutable state control, which describes a part of the user interface by constructing other controls. The build method must be implemented to return a widget object. Icon, IconButton, and Text are all stateless widgets, they are all subclasses of StatelessWidget

  • StatefulWidget is dynamic. The user can interact with it (for example, enter a form, or move a slider), or it can change over time (perhaps UI updates caused by data changes). Checkbox, Radio, Slider, Form, and TextField All are stateful widgets, they are all subclasses of StatefulWidget

  • Custom Widget: Inherit StatefulWidget and rewrite the createState() method to return a State object. Custom stateless widget

  • Hide and show components

The inclusion of controls uses child to load examples of common controls in flutter

Compile and package

Android
ios

The main realization of the project

  • Order center uses listview to load orders and refresh component network to request gradview

  • Use gradview to show the realization of common function carousel on the homepage of car search

  • Personal center uses listView to load common modules

  • Login module-call the interface to realize the encapsulation route jump of the common controls of the login function

  • Conversion of encapsulated json for network requests

  • The use of routing flutter_fluro

  • Refresh the use of loading controls

to achieve goals

dio handles network requests

  • Implementation of Get and Post requests
  • Implementation of interceptor
  • json data analysis
  • File upload and download

Understanding and using post and get of http.dart

  • Flutter’s own network request library

fluro handles routing jumps

  • Route jump value
  • Global configuration of routing

Flutter state management

  • Redux和Provider
  • Provider is the officially recommended state management framework
  • Provider ListenableProvider ChangeNotifierProvider ValueListenableProvider StreamProvider FutureProvider

Login function interface

dart basic syntax

  • The basic data type Number String bool List (array) Set (the values ​​in the collection cannot be repeated, and the value types must be unified. The main function is to remove the duplicate content in the array. Set is a collection without order and cannot be repeated) Map ( Unordered key-value pairs)
  • final and const var define variables and constants
  • String to number var one = int.parse(‘test’)
  • Number to string var str = num.toString();
  • Function in dart
  • 3.1 The basic format of the custom method, the return type, the method name (formal parameter 1, formal parameter 2, …) {method body specific execution logic return return value;} print();//built-in method/function
  • Arrow function void main() => runApp(new MyApp());
  • dart flow control statement
  • dart supports generics
  • The concept of the dart class. A class is usually composed of signs and methods. Subclasses use the extends class keyword to inherit from the parent class. The child class integrates the attributes and methods visible in the parent class but does not inherit the constructor. The child class can override the method of the parent class. getter and setter methods
  • async & await
  • Function Dart is an object-oriented language
  • Anonymous function
  • Function scope
  • as , is 与 is!
  • as: judge to belong to a certain type
  • is: true if the object has the specified type
  • is!: false if the object has the specified type

#Package 1 android Configure the signature in gradle to build the release version through flutter build apk to generate

2 iOS configuration related certificates to generate ipa files

Download Details:

Author: wuyulunbier

GitHub: https://github.com/wuyulunbier/hsk_flutter

#flutter #dart #mobile-apps

What is GEEK

Buddha Community

A new Flutter project.just for learning

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

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

Autumn  Blick

Autumn Blick

1593867420

Top Android Projects with Source Code

Android Projects with Source Code – Your entry pass into the world of Android

Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.

These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.

top android projects with source code

Android Projects with Source Code

Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project

Android Projects for beginners

1. Calculator

build a simple calculator app in android studio source code

Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.

To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.

Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.

Source Code: Simple Calculator Project

2. A Reminder App

Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.

To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.

In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.

3. Quiz Application

Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.

To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.

In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.

4. Simple Tic-Tac-Toe

android project tic tac toe game app

Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.

To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.

Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.

Source Code: Tic Tac Toe Game Project

5. Stopwatch

Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.

This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.

6. To Do App

Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.

So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.

Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.

7. Roman to decimal converter

Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.

You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.

The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.

8. Virtual Dice Roller

Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.

Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.

The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!

9. A Scientific Calculator App

Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.

To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.

10. SMS App

Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.

For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.

The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.

#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects

Which is the top NYC flutter app development company?

Flutter is Google’s UI toolkit for crafting beautiful, natively compiled applications for mobile, web, and desktop from a single codebase. It is used to develop applications like Android, iOS, Windows, Mac, Linux and the web.

Flutter consists of two important parts:

An SDK (Software Development Kit): A collection of tools that are going to help you develop your applications. This includes tools to compile your code into native machine code (code for iOS and Android).
A Framework (UI Library based on widgets): A collection of reusable UI elements (buttons, text inputs, sliders, and so on) that you can personalize for your own needs.

Benefits of Flutter:

Without making any comparisons with other platforms, here’s a list of some of the features and qualities that may make you consider having a go at Flutter:

High productivity: Since Flutter is cross-platform, you can use the same code base for your iOS and Android app. This can save you both time and resources.

Great performance: Dart compiles into native code and there is no need to access OEM widgets as Flutter has its own. This means less mediated communication between the app and the platform.

Fast and simple development: One of the most lauded features of Flutter is hot reload which allows you to instantly view the changes made in the code on emulators, simulators, and hardware. In less than a second, the changed code is reloaded while the app is running with no need for a restart. This is great not just for building UIs or adding features but also for bug fixing.

Compatibility: Since widgets are part of the app and not the platform, you’ll likely experience less or no compatibility issues on different OS versions. This in turn means less time spent on testing.

Open-source: Both Flutter and Dart are open-source and free to use, and provide extensive documentation and community support to help out with any issues you may encounter.

Are you looking for a Top flutter app development company in New York, NYC?

New York is the largest hub for mobile app development. There are so many flutter app development companies in New York City but amongst all here I suggest one of the top company which can fulfill all your needs at one-stop. Since established in 2014, AppClues Infotech is a versatile company that builds custom flutter apps to do things differently. They are the Top Flutter App Development service provider in New York (NYC) that provides the greatest service worldwide with high proficiency. They have successfully delivered 750+ quality mobile app projects to their esteemed clients.

They have highly experienced app developers who have the best strength of work on multiple platforms like android, Cross-platform, and iOS. Build your Robust, Secure & High-performance mobile app with AppClues Infotech at an affordable cost.

Flutter App Development Services by AppClues Infotech:

Faster Development: Flutter uses readymade widgets and assists in creating the best User interfaces utilizing the building blocks. UI customization takes the longest duration to finish in cross-platform development. Flutter lessens your task by providing widgets that follow material design looks perfect.

Integrate for Easy Adoption: The main purpose of flutter is to simplify the burden of the developers. Using other programming languages flutter provides an integration that makes adoption easy.

Less Code: The coding experience with Flutter will amaze and attract you. Flutter uses Dart programming language which is object-oriented and strongly typed. The Programming style is declarative and reactive.

Save your Testing Time: Earlier developers had to devote time to the testing process for the two different platforms individually. With the advent of a flutter, this time can be utilized as the testing is used only once for both the platform which makes the task even more efficient.

Build Expressive and Beautiful UIs: Flutter has some amazing features for a customer-oriented app development which will provide a very smooth experience to your clients.

Experiment and check instant results: Through the hot reload feature developers can make changes in the coding and see the results in seconds directly in the app. Bugs can be fixed easily clearing the path for a smooth and quicker debugging.

Why Choose AppClues Infotech for Flutter App Development?

AppClues Infotech understands how important it is to have a visually quirky brand to accelerate the growth of your businesses. They have the best team of expert developers who are constantly streamlining their efforts to provide you with the most desirable solutions in a cost and time-effective manner. Their dedicated developers are tuned with all the current updates. Rendering high-quality and customized services to satisfy their clients is their foremost priority. Their development team has command over developing robust, elegant and efficient cross-platform mobile apps on Flutter.

  • Vast Team of Developers
  • User-Engaging Design
  • Best Experience in Industry
  • Cost-Effective Price
  • On-Time Delivery
  • Technical Support
  • Testing & Maintenance, Re-development Service
  • Use Multiple Services at One-Stop

Do you have a plan to develop a Secure & High-performance flutter mobile app for your project or looking for free consultation Contact AppClues Infotech team.

#flutter mobile app development new york #best flutter mobile app development company new york #top flutter app development company new york #custom flutter app development services new york #leading flutter app development services company new york

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.