dType is a lightweight distraction-free text editor for Android. It features a minimalistic interface and an original export/save system. It’s a quick-to-load, distraction-free interface layer between the idea and any app/format of choice.

dType source code is distributed in a form of Eclipse project. It requires the following dependencies to be satisfied:

• JVM and JDK
• Eclipse Java IDE
• Android SDK
• ADT plugin for Eclipse

These are the common prerequisites for general-purpose Android development. You can get more information on installing and configuring these on the official Android developers resources.

Simply import the project and install the required library to get rid of the error. Android SDK even provides a way to do that automatically: right click on the project → Android Tools → Add Support Library.