In the last tutorial, we've explored the modern way of implementing custom fonts on Android. However, it broke the support for dynamically changing the font style and weights (for example, bold or italic). In this tutorial, we'll fix this drawback and configure a font family with different styles. {{outline}} {{video} …

In today's competitive app market on Google Play, a beautiful, polished app is necessary to be successful. Custom fonts are an important element of taking an app to the next level and distinct yourselves from the mass. We discussed this in our first tutorials on how to implement custom fonts …

After more than fifteen function-relevant Gson tutorials we'll move to something more developer focused. By default Gson will create minified JSON strings. This is important to reduce the amount of data being transferred over the network. However, especially with large models, for us developers it can be challenging to read …

If you're using the code obfuscator ProGuard before releasing apps, this will be a valuable tutorial for you. We'll go through a standard ProGuard configuration, which should prevent unexpected runtime exceptions in your apps when you're using ProGuard and Gson. If you're not using ProGuard, you can check our other …

When you’re developing an app professionally, you’re probably dealing with multiple server environments. Your API developers are constantly changing and improving the endpoints the apps consume. If you’ve an excellent backend developer, he’ll provide multiple environments: develop: latest snapshot of the API code staging: next API …

Travis CI is a sophisticated continuous integration and deployment service. It integrates with GitHub and runs tests on events like commits or pull requests. {{outline}} {{video}} At this point, we published two hapi plugins. Testing both plugins is an essential part of our development flow to know they are mature …

Retrofit is an excellent library to load data from an API or website. In a previous tutorial, you've learned how to load data from Wikipedia with jspoon. However, we didn't cover displaying that data. In this tutorial, you'll use a RecyclerView to display the section titles of a parsed Wikipedia …

Returning the result of a long-running function at a later time is an important aspect of programming. A lot of high-level programming languages have the asynchronousity build in (e.g. C# with delegates) or it’s part of the language nature that it even leads to a callback hell (Node. …