List View and Grid View

-
Android ListView is a view which groups several items and display them in vertical scrollable list. The list items are automatically inserted to the list using an Adapter that pulls content from a source such as an array or database.
An adapter actually bridges between UI components and the data source that fill data into UI Component. Adapter holds the data and send the data to adapter view, the view can takes the data from adapter view and shows the data on different views like as spinner, list view, grid view etc.
The ListView and GridView are subclasses of AdapterView and they can be populated by binding them to an Adapter, which retrieves data from an external source and creates a View that represents each data entry.
Android provides several subclasses of Adapter that are useful for retrieving different kinds of data and building views for an AdapterView ( i.e. ListView or GridView). The common adapters are ArrayAdapter,Base Adapter, CursorAdapter, SimpleCursorAdapter,SpinnerAdapter and WrapperListAdapter.
Android GridView shows items in two-dimensional scrolling grid (rows & columns) and the grid items are not necessarily predetermined but they automatically inserted to the layout using a ListAdapter.
An adapter actually bridges between UI components and the data source that fill data into UI Component. Adapter can be used to supply the data to like spinner, list view, grid view etc.
The ListView and GridView are subclasses of AdapterView and they can be populated by binding them to an Adapter, which retrieves data from an external source and creates a View that represents each data entry.

Comments

Post a Comment

Popular posts from this blog

Flutter : Introduction

-
Image
  Introduction to Flutter Installation In this section, let us see how to install Flutter SDK and its requirement in a windows system. Step 1 − Go to URL, https://flutter.dev/docs/get-started/install/windows and download the latest Flutter SDK. As of April 2019, the version is 1.2.1 and the file is flutter_windows_v1.2.1-stable.zip. Step 2 − Unzip the zip archive in a folder, say C:\flutter\ Step 3 − Update the system path to include flutter bin directory. Step 4 − Flutter provides a tool, flutter doctor to check that all the requirement of flutter development is met. flutter doctor Step 5 − Running the above command will analyze the system and show its report as shown below − Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, v1.2.1, on Microsoft Windows [Version 10.0.17134.706], locale en-US) [√] Android tool chain - develop for Android devices (Android SDK version 28.0.3) [√] Android Studio (version 3.2) [√] VS Code, 64-bit editio
Read more

How to release your Flutter app

-
  How to release your Flutter app for iOS   Prerequisites Make sure that you’ve covered Apple’s guidelines for releasing an app on the app store. Have your app’s icons and launch screens ready. Have an Apple Developer account.   Prepare for building Before you can build and release your app on the App Store, you need to set up a place for it using App Store Connect. But first, you need to register a unique bundle ID for your app. This can be done by logging into your Apple Developer account and following these steps: Open the App IDs page. Click + to create a new Bundle ID . Fill out the needed information: App Name, and Explicit App ID. If your app needs specific services, select them and click Continue . Review the details and click Register to finish. Now that we have a unique bundle ID, it’s time to set up a place for your app on the App Store Connect. Log in to the App Store Connect. Select My Apps . Click + then select New App . Fill in your app details and make sure i
Read more

Firebase Cloud Messaging

-
Image
  what are push notifications? Push Notifications are a sort of pop-up messaging medium that alerts app users to what's going on in the app. They are also an important way to amplify user engagement in your app. For example, say a user forgets about the app once they have installed it. Then you can use push notifications as a mechanism to regain and retain their interest. Push notifications also help drive traffic to your app. Firebase Cloud Messaging is a service offered by Firebase which lets you send these notifications to your users. You can set up various configurations to send different notifications to different audiences based on time and routine. Because of all these benefits, we are going to use it to send notifications to our Flutter app. Step 1: Create a Flutter Project First, we are going to create a flutter project. For that, we must have the Flutter SDK installed in our system. You can find simple steps for flutter installation in the official documenta
Read more