On this new series I will explain what dependency injection is, what its main purpose is and how to use it on an Android project by using Dagger, the best know implementation designed with Android in mind.
It will be a follow-up from my previous post about MVP for Android, because I know some of you are quite interested in see them implemented in the same project, and I think they work quite well together.
This first part is going to be only a little theory to settle the basis. It’s important to understand what it is and why it exists, because if not we will think the benefits are not enough for the effort.
在这个新的系列文章中我将解释什么是依赖注入，它的主要目的是什么以及如何在 Android 项目中使用 Dagger，一个最著名的 Android 版本的实现。
本文是 MVP for Android 的后续文章，因为我知道你们中有一部分人对在项目中整合它们很感兴趣，而且我认为它们可以很好的协作。
第一部分将仅介绍一些理论来奠定基础。理解它是什么以及为什么存在是很重要的，因为如果我们不认为它有足够的好处，也不会有足够的动力去使用它。