Articles tagged android
Build an Android App with RxJava and Kotlin
{% include integrator-org-warning.html %} {% include integrator-org-warning.html %} :toc: macro :page-liquid: :experimental: Modern-day mobile apps do so much. They communicate with different back-ends via network APIs. They store and retrieve data from the local database, do heavy media processing, and communicate with web sockets. It’s hard to keep track of all the information from different asynchronous data sources, especially knowing that the users are accustomed to constantly having a fluid experience with the apps they...
Android Login Made Easy with OIDC
{% include integrator-org-warning.html %} :toc: macro :page-liquid: :experimental: Having a dedicated part of a mobile app for authorized users is a must for a modern-day app. Users want to have a personalized experience with the apps they love. They expect to seamlessly use services on different devices and platforms. And, most of all, they want to be sure that their personal data is secure. Implementing a secure login process on Android can be challenging to...
Build an Android Application with Authentication
{% include integrator-org-warning.html %} :toc: macro :page-liquid: :experimental: With mobile apps becoming ever-present in users' lives, following best security practices has become essential in protecting your users and your apps. Implementing security alone and from the ground up can be costly for your development team, create a less-than-ideal user experience, and be susceptible to design/implementation errors. The easiest path to strong security, and a positive user experience, is to turn to the experts. The Okta...
Get Familiar with Android and Gradle
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Interested in Android development? Then you should get familiar with Gradle, the only Android development build system that Google officially supports. Gradle manages all...
Build Mobile Apps with Angular, Ionic 4, and Spring Boot
{% include integrator-org-warning.html %} {% include integrator-org-warning.html %} :page-liquid: :toc: macro I’m a big fan of Ionic. I started using it several years ago when it was based on AngularJS. As a developer, I really liked it because I knew Angular. I found didn’t have to learn much more to be a productive developer with Ionic. What is Ionic? I’m glad you asked! Ionic is an open source project that allows you to build mobile...
Tutorial: User Login and Registration in Ionic 4
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Ionic allows you to develop PWAs and hybrid mobile apps. PWAs are web applications that run in a browser and allow for offline capabilities...
Build Login in Xamarin with Xamarin.Forms
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Chuck Norris could easily make a single app run on all of the platforms iOS, Android, and Windows - without any frameworks or tools....
Build an iOS App with React Native and Publish it to the App Store
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Apple’s App Store is the holy grail for mobile developers. With React Native you can develop native apps for Android and iOS using a...
Build a Basic Android App with Xamarin and Visual Studio
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Are you a .NET developer that has always wanted to make a mobile application? Or maybe you have tried building native mobile apps with...
Design and Develop an Android App with React Native and Publish to Google Play Store
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. As mobile app usage is expected to continue to grow, now is as good a time as any to get into the market. Android...
Build and Test a React Native App with TypeScript and OAuth 2.0
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. React Native is one of the most popular ways of creating mobile apps. Building on the success of React, it ties together native components...
Build a Basic CRUD App in Android with Kotlin
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Kotlin was recently given official Android support status by Google, but it remains difficult to understand for many developers. The best way to start...
Create a Basic Android App without an IDE
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Virtually every Android tutorial uses Android Studio to create and develop an app. This isn’t great for learning since you don’t see how things...
Use Ionic for JHipster to Create Mobile Apps with OIDC Authentication
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. We 💙 Ionic, JHipster, and Java here at Okta. Ionic is a framework for building native mobile apps using web technologies. Technically, this is...
Build an App for iOS and Android with Xamarin
Xamarin is a cross-platform technology that makes it possible to build native applications for Android and iOS using a single, shared codebase. Like other technologies such as React Native and NativeScript, it allows development teams to spend less time writing code for both platforms. Xamarin is open-source (and free). Under the hood, it uses Mono (a version of the Microsoft .NET runtime), so Xamarin apps are usually written in C#. You can build Xamarin apps...
Build an Ionic App with User Authentication
With Okta and OpenID Connect (OIDC) you can easily integrate authentication into an Ionic application, and never have to build it yourself again. OIDC allows you to authenticate directly against the Okta API, and this article shows you how to do just that in an Ionic application. I’ll demo how to log in with OIDC redirect, using Okta’s Auth SDK as well as how to use OAuth with Cordova’s in-app browser; user registration is omitted...
Tutorial: Develop a Mobile App With Ionic and Spring Boot
You already know that building APIs with Spring Boot is incredibly easy. But, your API isn’t complete without a UI, right? Well, building UIs with Ionic is pretty easy too, especially if you know Angular! Ionic is an open source framework designed to help you build mobile applications with web technologies. It started out as a framework based on AngularJS. Ionic 3.0 was recently released, with support for Angular 4, TypeScript 2.2, and lazy loading....
Android Unit Testing Part IV: Mocking
This is the third of a four part series on Android Unit Testing. In the last two articles I discussed the general principles of having good tests and the way to run Android tests on JVM making them fast and how to make your code less coupled. This article will explain how to make tests isolated. We need to mock a dependency, inject it, and then modify our test to indicate that we are not...
Android Unit Testing Part III: Disintegration
This is the third of a four part series on Android Unit Testing. In the last two articles I discussed the general principles of having good tests and the way to run Android tests on JVM making them fast. This part will show how to make your Android code less heavily coupled. This is a preparation step to ensure that your tests are isolated from each other. We want to test each unit of work...
Android Unit Testing Part II: Escaping Dalvik's Hold
This is the second of a four part series on Android Unit Testing. In these posts, we’ll walk through the key steps engineers should take to make Android test fast by running them on JVM (versus running them on emulator). For background information on the importance of Android testing, visit Part I of the series. It appears that the need to run tests on an Android device or an emulator has concerned Android engineers for...