This is another tutorial in the Retrofit series. It explains how to integrate authentication with username/email and password with Retrofit. Update — October 22nd 2015 We’ve added new code examples for Retrofit 2 besides the existing ones for Retrofit 1.9. We’ve also published an extensive Retrofit upgrade …

In comparison to the other mobile platforms, Android's Java is slow to run computationally intensive tasks. RenderScript offers a framework to efficiently compute algorithms by utilizing all processors. RenderScript is fairly new to Android and most of the APIs are only available for Android 4.3 (Jellybean) or newer. Fortunately, …

This is the first tutorial in an extensive series on Retrofit. The series dives through all aspects of Retrofit and prepares you for many potential use cases. You’ll get to know Retrofit’s range of functions and extensibility. Update — October 21st 2015 We’ve added new code examples for …

When using ActiveAndroid you may face the problem that the database Model class already declears an id field as primary key and you actually need that id field for your own purposes. The following will describe how to change the primary key identifier of ActiveAndroid so you can use your …

Recently, I ran into a situation where I receive a list of objects in JSON from a REST endpoint. So far, this is nothing unusual and not a problem. However, the catch was that the objects were polymorphic and it was required to parse the child-class-specific fields. The previous solution …

I discovered this little trick a year ago and it was immensely helpful. So far, whenever I was working on my Android apps, I had to connect it to my laptop with a USB cable. The USB cable is annoying and limits my movements. Consequently, I was researching, if there …

Currently, I'm working on a project which relies a lot on its notifications. So far, the logic was fairly simple: display the notification if there is already a notification, replace the previous one The code for that logic is to use the same ID when creating the notification: // constant notification …

In the last few sprints in our eat foody project we focused on improving the design. Especially on the Android app we had a lot of potential to take the design to a higher level. After we added a custom font (Source Sans Pro), gave the buttons and the actionbar …