After reading this chapter, I found that this book is used by ADT as a development environment, and this approach is obsolete. After looking at the material, I learned that the development is generally using Android studio, so I reviewed the installation method of Android studio.
1. Download and install the JDK
First download the JDK installation package on Oracle's official website and choose the correct version to download according to your computer's operating system. Select the appropriate operating system and number of system bits. After downloading, double-click Install. After the environment variable is configured, it is ready to use.
2, download Android Studio 2.0
Login to Google's developer website and download the Android Studio 2.0 installation package. Due to network reasons, not very good on, so installed a VPN, successfully downloaded.
3. Update Android Studio essential Components Online
Once installed, opening Android Studio will download some of the necessary components first. You also need to turn on the VPN.
4, update the SDK online
Update the SDK version.
Build an Android development environment