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How to Add Multiple Selection to Android RecyclerView

The RecyclerView widget is an integral part of most Android applications today. Ever since it was added to the Android support library in late 2014, it has eclipsed the ListView widget as the most preferred widget for displaying large, complex lists. However, there’s one important feature missing in it: support for selecting . . . Read more

Angular Form Validation With Reactive and Template-Driven Forms

In this tutorial, we’ll explore reactive and template driven-forms in Angular. You’ll see how to create each kind and how to perform validation in Angular 6. Reactive and Template-Driven Forms What Are Angular Reactive Forms? Reactive forms are also known as model-driven forms. This means that the HTML content changes depending on . . . Read more

How to Use MongoDB Stitch in Android Apps

With MongoDB Atlas, all it takes is a few clicks in the browser to get your own MongoDB cluster up and running in the cloud. By using it, you can build Android and iOS apps that can serve millions of users efficiently. However, you’d still need a back-end server that . . . Read more

Create a Note-Taking App for Android With MongoDB Stitch

If you are looking for a secure serverless platform that’s both feature rich and cost effective, you may want to give MongoDB Stitch a try. In addition to offering handy server-side features such as functions, service webhooks, and user authentication, it comes tightly integrated with MongoDB Atlas, a powerful and . . . Read more

Design Better UX With Vue.js Transitions and Animations

Transitions and animations are an important design pattern whose aim is to improve the user experience (UX) by making the user interface (UI) more natural and intuitive.  Most people think that the purpose of transitions and animations is to engage the user’s attention, and this is true to some extent. . . . Read more

Write to Files and Read Files With PHP

In this tutorial, you’ll learn several important functions in PHP which are sufficient for all your basic file reading and writing needs. You’ll learn how to read a file, write to a file, write to a text file, and check if a file exists. Luckily, PHP provides a lot of . . . Read more

Connect to an API With Retrofit, RxJava 2, and Kotlin

Today, it’s pretty common for mobile apps to exchange data with remote servers, using web Application Programming Interfaces (APIs). Whether it’s checking for new emails using the Gmail API, searching for events in the local area with the Ticketmaster API, or leveraging the user’s Spotify history to recommend new music, APIs . . . Read more

What’s New in Swift 4.2?

The second update release to Swift of 2018, Swift 4.2 introduces some great improvements to the language. Read this post to learn how they can help you write even better code. Included in this version’s list of improvements: SE-0194: Adds the CaseIterable protocol to automatically generate an array of all the possible . . . Read more