Isaias Awate

Isaias Awate

1607590200

Input Fields for Flutter Standalone or Within a Form

Flutter Input Widgets - Standalone or within a Form → flutter_input

This package provides input widgets (fields) to manipulate data. The data to manipulate is either a single variable or an entry in a map. The map can even be nested. Parameter path defines the key to access the entry in the map. To access an entry in a nested map, the keys must be separated by a single slash (/) character.

All input widgets share a common set of parameters and methods. A list of validators can be attached to each input widget.

Each input widget can be used standalone. If it finds a InputForm ancestor then it will automatically register itself to the form. The form provides methods to enable(), reset(), save() or validate() all fields at once.

Input Widgets

The following input widgets are available. See section Development below for building your own input widget.

  • InputCheckbox - Checkbox for data type bool
  • InputCountry - Dropdown to select a country (shows flags)
  • InputDate - Calendar based selection for data type DateTime (date part only)
  • InputDatePicker - A highly customizable date picker with week of year and multiple swipe actions
  • InputDateTime - Wheels for data type DateTime can be customized for date only, time only or both
  • InputDropDown<T> - Dropdown button for data type T
  • InputFavorite - A favorite button with selectable icon for data type bool
  • InputKeyboard - Text input for data type String, int or double
  • InputLanguage - Dropdown to select a language (Locale)
  • InputPassword - Text field with a switch to make obscured input visible (String)
  • InputRadio<T> - Radio button to select one value of type T
  • InputRating - Rating widget with selectable icons and a range slider for data type int
  • InputSlider - Slider for data type double between a minimum and maximum value
  • InputSpinner - Spinner with buttons for data type double to decrease or increase a value between a minimum and maximum
  • InputSwitch - Switch for data type bool

Common Parameters

All input widgets share a common set of parameters. All parameters are named and optional.

  • Key key - Identifier for the field
  • bool autosave = true - automatically saves any changed value. If autovalidate is true then the value will only be changed when there are no validation failures.
  • bool autovalidate = false - automatically validates changed values
  • InputDecoration decoration - e.g. for a label (see example)
  • bool enabled - to enable or disable user input. If not set then uses setting from InputForm or defaults to true (if there is no form).
  • T initialValue - sets the fields initial value. Overrides using the value from map.
  • ValueSetter<T> onChanged - invoked on every change of the input field value
  • ValueSetter<T> onSaved - invoked by save() which will be automatically called by InputForm.save().
  • String path - to access the value in map
  • List<InputValidator> validators - list of validators

Validators

The following validators can be given to parameter validators of an input widget. Each validator accepts the optional parameter message to set an individual error message if the validation fails.

  • after(DateTime date) - validates that the field value is after date
  • before(DateTime date) - validates that the field value is before date
  • future - validates that the DateTime field value lies in the future
  • max(num maxVal) - validates that the num field value is not larger than maxVal
  • maxLen(num maxLen) - validates that the length of the String field value is not longer than maxLen
  • min(num minVal) - validates that the num field value is not smaller than minVal
  • minLen(num minLen) - validates that the length of the String field value is not shorter than minLen
  • notNull - validates the the field value is not empty
  • past - validates that the DateTime field value lies in the past

Usage

Each input widget will automatically register itself if it finds an InputForm ancestor. Otherwise it will just run standalone. It will use initialValue for its value to display. If initialValue is null then it will use the value from map[path] if both are set. If map is not set, then the field will use map from an InputForm ancestor (if there is any).

Saving a modified value will happen

  • on any change if autosave = true (which is the default)
  • when save() is called
  • when save() is called on the InputFormState

The changed value will be written to the map at path if both were supplied. Also method onSave() will be invoked with the changed value.

Demo

For a complete example see example/main.dart.

InputDatePicker

The highly customizable InputDatePicker allows you to choose a date from a calendar page which also shows the week of the year. It provides spinners, swipes and a dropdown to select the month. The year can even be entered as text. All parts can be customized by DatePickerStyles.

Screenshot

Development

To create a new input field for data type T follow these steps:

  1. Copy one of the included class files.
  2. Rename the class widget and its state to your new one.
  3. Replace T with the value type of your new input field.
  4. Adapt parameters and leave the call to super() with all the common parameters.
  5. Adapt method build( BuildContext context) in the state class. It must end with return super.buildInputField( context, ... where ... is the code to display your new field widget.

Utilities

This package also contains some utilities.

  • InputUtils.convertToType() converts a value to a given target type.
  • InputUtils.readFromJson() reads a value from a nested map.
  • InputUtils.writeToJson() writes a value into a nested map.
  • See date_helper.dart for extensions on DateTime for weekOfYear, julianDay and more.

To Do

  • [x] create a customizable calendar picker with week numbers
  • [x] create a text input field for int and double
  • [ ] create an input widget for a calendar with events
  • [ ] create an input widget to select multiple choices like a multi-select list
  • [ ] add some images to this documentation
  • [x] internationalize the whole package
  • [x] create an input widget to change the language within the app

Download Details:

Author: djarjo

Source Code: https://github.com/djarjo/flutter_input

#flutter #dart #mobile-apps

What is GEEK

Buddha Community

Input Fields for Flutter Standalone or Within a Form
Destiny Volkman

Destiny Volkman

1597014000

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 RangeSlider, DatePicker 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

I am Developer

1597489568

Dynamically Add/Remove Multiple input Fields and Submit to DB with jQuery and Laravel

In this post, i will show you how to dynamically add/remove multiple input fields and submit to database with jquery in php laravel framework. As well as, i will show you how to add/remove multiple input fields and submit to database with validation in laravel.

dynamically add remove multiple input fields and submit to database with jquery and laravel app will looks like, you can see in the following picture:

add/remove multiple input fields dynamically with jquery laravel

Laravel - Add/Remove Multiple Input Fields Using jQuery, javaScript

Follow the below given easy step to create dynamically add or remove multiple input fields and submit to database with jquery in php laravel

  • Step 1: Install Laravel App
  • Step 2: Add Database Details
  • Step 3: Create Migration & Model
  • Step 4: Add Routes
  • Step 5: Create Controller by Artisan
  • Step 6: Create Blade View
  • Step 7: Run Development Server

https://www.tutsmake.com/add-remove-multiple-input-fields-in-laravel-using-jquery/

#laravel - dynamically add or remove input fields using jquery #dynamically add / remove multiple input fields in laravel 7 using jquery ajax #add/remove multiple input fields dynamically with jquery laravel #dynamically add multiple input fields and submit to database with jquery and laravel #add remove input fields dynamically with jquery and submit to database #sql

Punith Raaj

1644991598

The Ultimate Guide To Tik Tok Clone App With Firebase - Ep 2

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

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