A Customizable Dynamic Font Loader for Flutter with Caching Enabled

Dynamic Cached Fonts

A customizable dynamic font loader for flutter with caching enabled. Supports Firebase Cloud Storage too!

Demo 3

Introduction

Dynamic Cached Fonts allows you to dynamically load a font from any url and cache it. This way, you can reduce your bundle size and load the font if and when it's required.

Another advantage of dynamically loading fonts is that you can now easily provide an option to your users to pick an app font. This allows for a greater level of customization.

Caching is an added performance upgrade as the font will be downloaded only once and used multiple times, reducing network and battery usage.

Get Started

To use the package, add dynamic_cached_fonts as a dependency.

Usage

Loading fonts on demand

You can load font on demand, for example - when a page loads

@override
void initState() {
  final DynamicCachedFonts dynamicCachedFont = DynamicCachedFonts(
    fontFamily: fontFamilyName, // The font family name to be passed to TextStyle.fontFamily
    url: fontUrl, // A valid url pointing to a font file (.ttf or .otf files only) 
  );
  dynamicCachedFont.load(); // Downloads the font, caches and loads it.

  super.initState();
}
...
Text(
  'Some Text',
  style: TextStyle(fontFamily: fontFamilyName),
)

Demo 1

Or when a button is clicked

ElevatedButton(
  onPressed: () {
    final DynamicCachedFonts dynamicCachedFont = DynamicCachedFonts(
      fontFamily: fontFamilyName,
      url: fontUrl,
    );

    dynamicCachedFont.load();
  },
  child: const Text('Load Font'),
),

Demo 2

If you want to change how large the cache can be or maybe how long the font stays in cache, pass in maxCacheObjects and cacheStalePeriod.

DynamicCachedFonts(
  fontFamily: fontFamilyName,
  url: fontUrl,
  maxCacheObjects: 150,
  cacheStalePeriod: const Duration(days: 100),
);

TextStyle.fontFamilys are applied only after load() is called.

Calling load() more than once throws a StateError

What if you need to load multiple fonts, of varying weights and styles, as a single family...For that, you can use the DynamicCachedFonts.family constructor.

It accepts a list of urls, pointing to different fonts in the same family, as urls.

DynamicCachedFonts.family(
  urls: <String>[
    fontFamilyNameBoldUrl,
    fontFamilyNameItalicUrl,
    fontFamilyNameRegularUrl,
    fontFamilyNameThinUrl,
  ],
  fontFamily: fontFamilyName,
);

Demo 5

If you need more control, use the static methods!

cacheFont

onPressed: () {
  DynamicCachedFonts.cacheFont(fontUrl);
},
child: const Text('Download font'),

You can pass in maxCacheObjects and cacheStalePeriod here as well.

canLoadFont, loadCachedFont, loadCachedFamily

canLoadFont is used to check whether the font is available in cache. It is usually used in combination with the loadCached* methods.

First, Check whether the font is already in cache. If it is, then load the font.

if(DynamicCachedFonts.canLoadFont(fontUrl)) {
  // To load a single font...
  DynamicCachedFonts.loadCachedFont(
    fontUrl,
    fontFamily: fontFamilyName,
  );

  // Or if you want to load multiple fonts as a family...
  DynamicCachedFonts.loadCachedFamily(
    <String>[
      fontFamilyNameBoldUrl,
      fontFamilyNameItalicUrl,
      fontFamilyNameRegularUrl,
      fontFamilyNameThinUrl,
    ],
    fontFamily: fontFamilyName,
  );
}

Now, if the font isn't available in cache, download it!

if(DynamicCachedFonts.canLoadFont(fontUrl)) {
  ...
} else {
  DynamicCachedFonts.cacheFont(fontUrl);
}

removeCachedFont

To remove a font from cache permanently, use removeCachedFont.

Note - This does not change the font immediately until a complete app restart.

Demo 3

Finally, if you want to customize their implementation, extend RawDynamicCachedFonts and override the static methods.

Have a custom font to load from Firebase Cloud Storage? Go for the DynamicCachedFonts.fromFirebase constructor! It accepts a Google Cloud Storage location which is a url starting with gs://. Other than that, it is similar to the default constructor.

Tip: Use DynamicCachedFonts.toggleVerboseLogging to log detailed statuses and configurations for debugging.

Demo 4

Bug Reports and Help

If you find a bug, please open an issue on Github or if you need any help, let's discuss on Github Discussions!

Contributing

To make things easier, you can use docker compose to set up a dev environment. Just run docker compose run linux to set up a Linux dev environment or run docker compose run windows to set up a Linux dev environment.

Use this package as a library

Depend on it

Run this command:

With Flutter:

 $ flutter pub add dynamic_cached_fonts

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

dependencies:
  dynamic_cached_fonts: ^0.3.1

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:dynamic_cached_fonts/dynamic_cached_fonts.dart'; 

example/lib/main.dart

import 'package:dynamic_cached_fonts/dynamic_cached_fonts.dart';
import 'package:flutter/material.dart';

import 'constants.dart';
import 'src/components.dart';
import 'src/demos.dart';

void main() {
  DynamicCachedFonts.toggleVerboseLogging(true);

  runApp(
    const MaterialApp(
      title: 'Dynamic Cached Fonts Demo',
      home: DynamicCachedFontsDemo1(),
    ),
  );
}

class DynamicCachedFontsDemo1 extends StatefulWidget {
  const DynamicCachedFontsDemo1({Key? key}) : super(key: key);

  @override
  _DynamicCachedFontsDemo1State createState() =>
      _DynamicCachedFontsDemo1State();
}

class _DynamicCachedFontsDemo1State extends State<DynamicCachedFontsDemo1> {
  @override
  void initState() {
    final DynamicCachedFonts dynamicCachedFont = DynamicCachedFonts(
      fontFamily: cascadiaCode,
      url: cascadiaCodeUrl,
    );
    dynamicCachedFont.load();

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(demoTitle),
      ),
      body: const Center(
        child: DisplayText(
          'The text is being displayed in $cascadiaCode which is being dynamically loaded and cached',
          fontFamily: cascadiaCode,
        ),
      ),
      floatingActionButton: ExtendedButton(
        icon: Icons.navigate_next,
        label: 'Next Example',
        onPressed: () => Navigator.push(
          context,
          MaterialPageRoute<DynamicCachedFontsDemo2>(
            builder: (_) => const DynamicCachedFontsDemo2(),
          ),
        ),
      ),
    );
  }
} 

Download Details:

Author: sidrao2006

Source Code: https://github.com/sidrao2006/dynamic_cached_fonts

#dynamic  #flutter #fonts

What is GEEK

Buddha Community

A Customizable Dynamic Font Loader for Flutter with Caching Enabled

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

A Customizable Dynamic Font Loader for Flutter with Caching Enabled

Dynamic Cached Fonts

A customizable dynamic font loader for flutter with caching enabled. Supports Firebase Cloud Storage too!

Demo 3

Introduction

Dynamic Cached Fonts allows you to dynamically load a font from any url and cache it. This way, you can reduce your bundle size and load the font if and when it's required.

Another advantage of dynamically loading fonts is that you can now easily provide an option to your users to pick an app font. This allows for a greater level of customization.

Caching is an added performance upgrade as the font will be downloaded only once and used multiple times, reducing network and battery usage.

Get Started

To use the package, add dynamic_cached_fonts as a dependency.

Usage

Loading fonts on demand

You can load font on demand, for example - when a page loads

@override
void initState() {
  final DynamicCachedFonts dynamicCachedFont = DynamicCachedFonts(
    fontFamily: fontFamilyName, // The font family name to be passed to TextStyle.fontFamily
    url: fontUrl, // A valid url pointing to a font file (.ttf or .otf files only) 
  );
  dynamicCachedFont.load(); // Downloads the font, caches and loads it.

  super.initState();
}
...
Text(
  'Some Text',
  style: TextStyle(fontFamily: fontFamilyName),
)

Demo 1

Or when a button is clicked

ElevatedButton(
  onPressed: () {
    final DynamicCachedFonts dynamicCachedFont = DynamicCachedFonts(
      fontFamily: fontFamilyName,
      url: fontUrl,
    );

    dynamicCachedFont.load();
  },
  child: const Text('Load Font'),
),

Demo 2

If you want to change how large the cache can be or maybe how long the font stays in cache, pass in maxCacheObjects and cacheStalePeriod.

DynamicCachedFonts(
  fontFamily: fontFamilyName,
  url: fontUrl,
  maxCacheObjects: 150,
  cacheStalePeriod: const Duration(days: 100),
);

TextStyle.fontFamilys are applied only after load() is called.

Calling load() more than once throws a StateError

What if you need to load multiple fonts, of varying weights and styles, as a single family...For that, you can use the DynamicCachedFonts.family constructor.

It accepts a list of urls, pointing to different fonts in the same family, as urls.

DynamicCachedFonts.family(
  urls: <String>[
    fontFamilyNameBoldUrl,
    fontFamilyNameItalicUrl,
    fontFamilyNameRegularUrl,
    fontFamilyNameThinUrl,
  ],
  fontFamily: fontFamilyName,
);

Demo 5

If you need more control, use the static methods!

cacheFont

onPressed: () {
  DynamicCachedFonts.cacheFont(fontUrl);
},
child: const Text('Download font'),

You can pass in maxCacheObjects and cacheStalePeriod here as well.

canLoadFont, loadCachedFont, loadCachedFamily

canLoadFont is used to check whether the font is available in cache. It is usually used in combination with the loadCached* methods.

First, Check whether the font is already in cache. If it is, then load the font.

if(DynamicCachedFonts.canLoadFont(fontUrl)) {
  // To load a single font...
  DynamicCachedFonts.loadCachedFont(
    fontUrl,
    fontFamily: fontFamilyName,
  );

  // Or if you want to load multiple fonts as a family...
  DynamicCachedFonts.loadCachedFamily(
    <String>[
      fontFamilyNameBoldUrl,
      fontFamilyNameItalicUrl,
      fontFamilyNameRegularUrl,
      fontFamilyNameThinUrl,
    ],
    fontFamily: fontFamilyName,
  );
}

Now, if the font isn't available in cache, download it!

if(DynamicCachedFonts.canLoadFont(fontUrl)) {
  ...
} else {
  DynamicCachedFonts.cacheFont(fontUrl);
}

removeCachedFont

To remove a font from cache permanently, use removeCachedFont.

Note - This does not change the font immediately until a complete app restart.

Demo 3

Finally, if you want to customize their implementation, extend RawDynamicCachedFonts and override the static methods.

Have a custom font to load from Firebase Cloud Storage? Go for the DynamicCachedFonts.fromFirebase constructor! It accepts a Google Cloud Storage location which is a url starting with gs://. Other than that, it is similar to the default constructor.

Tip: Use DynamicCachedFonts.toggleVerboseLogging to log detailed statuses and configurations for debugging.

Demo 4

Bug Reports and Help

If you find a bug, please open an issue on Github or if you need any help, let's discuss on Github Discussions!

Contributing

To make things easier, you can use docker compose to set up a dev environment. Just run docker compose run linux to set up a Linux dev environment or run docker compose run windows to set up a Linux dev environment.

Use this package as a library

Depend on it

Run this command:

With Flutter:

 $ flutter pub add dynamic_cached_fonts

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

dependencies:
  dynamic_cached_fonts: ^0.3.1

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:dynamic_cached_fonts/dynamic_cached_fonts.dart'; 

example/lib/main.dart

import 'package:dynamic_cached_fonts/dynamic_cached_fonts.dart';
import 'package:flutter/material.dart';

import 'constants.dart';
import 'src/components.dart';
import 'src/demos.dart';

void main() {
  DynamicCachedFonts.toggleVerboseLogging(true);

  runApp(
    const MaterialApp(
      title: 'Dynamic Cached Fonts Demo',
      home: DynamicCachedFontsDemo1(),
    ),
  );
}

class DynamicCachedFontsDemo1 extends StatefulWidget {
  const DynamicCachedFontsDemo1({Key? key}) : super(key: key);

  @override
  _DynamicCachedFontsDemo1State createState() =>
      _DynamicCachedFontsDemo1State();
}

class _DynamicCachedFontsDemo1State extends State<DynamicCachedFontsDemo1> {
  @override
  void initState() {
    final DynamicCachedFonts dynamicCachedFont = DynamicCachedFonts(
      fontFamily: cascadiaCode,
      url: cascadiaCodeUrl,
    );
    dynamicCachedFont.load();

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(demoTitle),
      ),
      body: const Center(
        child: DisplayText(
          'The text is being displayed in $cascadiaCode which is being dynamically loaded and cached',
          fontFamily: cascadiaCode,
        ),
      ),
      floatingActionButton: ExtendedButton(
        icon: Icons.navigate_next,
        label: 'Next Example',
        onPressed: () => Navigator.push(
          context,
          MaterialPageRoute<DynamicCachedFontsDemo2>(
            builder: (_) => const DynamicCachedFontsDemo2(),
          ),
        ),
      ),
    );
  }
} 

Download Details:

Author: sidrao2006

Source Code: https://github.com/sidrao2006/dynamic_cached_fonts

#dynamic  #flutter #fonts

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.