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Flutter State Management With Provider and ChangeNotifier

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Dart REST API Server CRUD Application with aqueduct

Dart is the programming language created by Google and its very popular nowadays because it's providing the platform using which we can create a single code base for developing an application for Android, IOS and Web with the help of Flutter SDK. Today in this article we are going to explore how to create a REST API using the dart without Flutter.



Here in this part of the article, we will explore two things.



Expose Simple REST API using the DART programming languageConnect Dart with the Postgress using the Model



Create REST API in DART with aqueduct



So for creating the rest API using the dart we are going to use the aqueduct package available at pub.dev. This package provides lots of functionality which help us for creating the REST API server.



Let's start the creation of our REST API server. We required some setup before starting the coding.



Dart should be installed into your server or local environmentWe required a Postgres database installed in your dev environment.



Activate t…

Flutter How to Start Android Activity from Flutter View

Flutter and Dart is an excellent combination for creating the UI, but for accessing the platform-specific service we need to open platform-specific activity. So lets in this article we will explore how to start an android activity and access the service from Flutter View.

Create a Project for this Android Activity Flutter View Demo Create a Project From File menu select the New Flutter Project Enter the project name Select the AndroidX support and click on next After the above, we step click on Finish We will have the following project structure created. Create the Second Activity in Android
Just go to the android folder and open it in separate windows. We will have the following project structure.









Create the Activity Just right click on the Kotlin folder and create a blank activity from the menu. If you create the activity then you may be required to upgrade the Gradle and do some import. So Just click on update and wait for the project sync completed.
Update the project build config …

Flutter Theme Creation, Programmatic Way

Flutter and Dart is an excellent combination for creating the mobile app with material design with nice GUI. Its lots of widget which help the developer for creating the app UI very fast with respect to the other language. You may face some problem in starting due to comm, curly brace and semicolon but after some time you will find the way how to work with these all stuff and it becomes very easy for you. But in this article, we are not going to discuss all these. In this article, we will handle a very interesting topic on how to create a custom theme or multiple themes and let's user decide which theme to use.



Create a flutter project



So let's create a flutter project by selecting the appropriate option from the File menu in android studio or Visual Code. If you are new to Flutter and Dart you can check out our recent post to get started Creating Cross-platform app using flutter.



Once your project is created you will get the default counter app and you try running the app in the…

Flutter Page Navigation and Send data to Page

Flutter Page Navigation, If you are from the Kotlin or Java and witting the Android app using the Android Studio then you are well aware of the Activity and Fragment. But in the Flutter, there is no activity and fragment. So question is that what is alternative of this and the answer is Page/Widget. So in this article, we will explore how to navigate from one page to other pages, send and receive data to the page step by step.



The Home Page of Flutter



When we create the project by default we get one page created and it's defined as home. If you are new to Flutter and Dart then please check our earlier article. There is no restriction on the page definition so you can give any page as the home page.



class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Navigation Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHome…

Flutter and Dart Create Dialog Widget

Flutter and Dart provide us a comman tool for developement of the mobile app for Android and IOS platform.  As mobile app developer we often required to implement the Dialog to so quick action, some alert msg and more to the user. In Simple word Dialogs are used to inform users about a task and can contain critical information, require decisions, or involve multiple tasks. So in this post we are going to explore the several type of the Dialoag and its implementation in Flutter. 


Type of Dialog



We have three types of dialog that Flutter and Dart SDK platform provide us.



Alert Dialog -- To show some content and action input from the end-user Simple Dialog -- Its have lots customization option to show the dialogAbout Dialog -- Dialog to show about us with icon and text.



Alert Dialog and its implementation in Flutter and Dart



First of all, we are going to implement the alert dialog. If you are looking to show the dialog then I am sure you have good knowledge about the dart and flutter and you…

How to create a circular EditText View in android

You obsrved several app use the Circlular View with rounded corner for taking user input edittext. In this post we are going to explore to create a Circular EditText view for user input. Let's start the creation of the Circular EditText View.


Create The Circlular EditText Demo Project



Creating the new project is everyday work if you are a mobile app developer, but just adding steps who is new in the android mobile app development.



For creating the new project go to the File menu in android studio and click on File -> New-> New Project. In the next windows select the Activity Type I will in this demo will select Empty Activity. Choose the Application name like Circle EditText Demo and Finish.



Attach the EditText and Button to layout



Now, We need to create an EditText and Button into the main layout located inside the res->layout directory.



Circular Image View Project





Now, add the EditText and button to the activity_main.xml. In this example, androidx is used so you can migrate to…