Injection libraries for Java, Android: Butterknife & Roboguice
In this article, I will show you how to inject Android views using Roboguice and Butterknife, and how to use dependency injection using Roboguice. You can infer that Butterknife is not a dependency injection library. Why do we need them? If you start to develop programs beyond “hello world” with java or all other languages, you probably want to get rid of some repetitive, cumbersome boilerplate coding parts. Indeed, we should focus on logic, not on metaprogramming. For example, in Android development, you get view references as follows: In this code, we only want to change a textView’s text and show the labels of the two buttons. What we want is called our program’s logic. As it is obvious we have to write a lot of statements to achieve such a simple task. Now try to guess what happens if you have a lot of views, more than just two… Butterknife helps us to focus on logic With this library, it is easier for us to create view references. So you can write a shorter version ...