Robert E. Hilton

Robert E. Hilton

1569639455

How to handle permission requests in Flutter

How to handle permission requests in Flutter - In this lesson, we are going to look at how to request and check permissions on Android and IOS in Flutter.

Package(s)

Installation

The process of installing a flutter package is quite simple, just open the pubspec file and add the package into your dependency bloc section.

dependencies:
  permission_handler:

TIP: You can use caret versioning to restrict the package version to a specific major version. For instance, permission_handler: ^3.0.0 restricts it to version 3, but you will get both minor updates and patches. You can learn more about how dart pub package manager works here if you are interested.

Permissions

First, we need to determine which permissions we need, because your app needs to publicly declare the permissions it needs. Some less-sensitive permissions such as the internet, etc. are granted automatically. While other more sensitive permissions, think of Location, Contacts, etc. require user authorization before your app can use them.

iOS permissions

In iOS, this done by adding the permissions to Information Property List File i.e. info.plist, with the Permission you need being the Key, accompanied by the reason why your app needs to use the feature.

<key>NSPhotoLibraryUsageDescription</key>
<string>This app requires to save your images user gallery</string>

In Flutters’ case, the info.plist in the iOS/Runner directory at the root of your project. You can learn more about the info.plist here.

You can find the complete list of permissions here and guidelines for asking permission on iOS here.

Android permissions

In Android, you can achieve the same by adding the <uses-permission> tag to the android manifest, this in the android/src/main/AndroidManifest.xml directory.

<manifest ...>
    <uses-permission android:name="android.permission.SEND_SMS"/>
    <application ...>
        ...
    </application>
</manifest>

You can learn more about permission on Android here and the best practices here.

Requesting for Permission

To request permission, first you need to import the package:

import 'package:permission_handler/permission_handler.dart';

And then, let say you want to request contact permission, you can do it like this. You pass a list of permissions you are requesting for, which allows you to ask for multiple permissions you need at once.

final PermissionHandler _permissionHandler = PermissionHandler();
var result = await _permissionHandler.requestPermissions([PermissionGroup.contacts]);

And finally, you can inspect the result to see if the user granted permission or not. The results object is an array of PermissionStatus. The key of the array is the permission you were asking.

The possible permission statuses are:

This is image title

For instance, in our example above, we can check if permission to access contacts was granted like this:

if (result[PermissionGroup.contacts] == PermissionStatus.granted) {
  // permission was granted
}

You can also use a switch statement to react to the results of your request.

switch (result[PermissionGroup.contacts]) {
  case PermissionStatus.granted:
    // do something
    break;
  case PermissionStatus.denied:
    // do something
    break;
  case PermissionStatus.disabled:
    // do something
    break;
  case PermissionStatus.restricted:
    // do something
    break;
  case PermissionStatus. Unknown:
    // do something
    break;
  default:
}

Checking if your App has been Given Permission

It is important that your app can check if it has permission to access certain features. This allows your app to decide based on if the user has granted permission or not. On top of that, it can help you determine if a feature is available or disabled on the users’ device.

You can check for permission by using the checkPermissionStatus function, which accepts the Permission as a parameter.

final PermissionHandler _permissionHandler = PermissionHandler();

var permissionStatus = await _permissionHandler.checkPermissionStatus(PermissionGroup.location);

This returns a PermissionStatus class – we saw it above – which details the status of the permission.

switch (permissionStatus) {
  case PermissionStatus.granted:
    // do something
    break;
  case PermissionStatus.denied:
    // do something
    break;
  case PermissionStatus.disabled:
    // do something
    break;
  case PermissionStatus.restricted:
    // do something
    break;
  case PermissionStatus.unknown:
    // do something
    break;
  default:
}

Tip

Some permissions such as contacts, calendar, microphone, location, etc. are common across iOS and Android. On the other hand, there are some permissions that either do not match up on both OSs. While others are just on one OS, i.e. storage, SMS, phone, etc. are only on android. You might want to determine which platform it is before requesting permission from the user.

Take a camera app, for instance, if you wanted photos to appear in the gallery, on iOS, you need photos permission while in android you need external storage permission.

var permission = Platform.isAndroid ? PermissionGroup.storage : PermissionGroup.photos;

And then, you can check if the user has granted your app permission:

await _permissionHandler.checkPermissionStatus(permission);

Or request for permission:

await _permissionHandler.requestPermissions([permission]);

#flutter #mobile-apps

What is GEEK

Buddha Community

How to handle permission requests in Flutter
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

Destiny Volkman

Destiny Volkman

1599861600

6 Things About HTTP Request in Dart For Beginners

Introduction

If you are here and a beginner, that means you want to learn everything about making an API request using Dart in Flutter, then you are in the right place for the HTTP tutorial. So without wasting any time, let’s start with this flutter tutorial. We will cover the essential topics required to work with the HTTP request in Dart.

What is Rest API in Dart ?

rest api flow

Rest APIs are a way to fetch data from the internet in flutter or communicate the server from the app and get some essential information from your server to the app. This information can be regarding your app’s data, user’s data, or any data you want to share globally from your app to all of your users.

This HTTP request fetches in a unique JSON format, and then the information is fetched from the JSON and put in the UI of the app.

Every programming language has a way of some internet connectivity i.e, use this rest API developed on the server and fetch data from the internet. To use this request feature, we have to add HTTP package in flutter, add this flutter package add in your project to use the http feature. Add this HTTP package to your pubspec.yaml, and run a command in terminal :

flutter packages get

#dart #flutter #async await #async function #cancel http api request in flutter #fetch data from the internet #flutter cancel future #flutter get request example #flutter post request example #future of flutter #http tutorial

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