First, go to the official website http://developer.android.com/index.html to download ADT and SDK corresponding version.
ADT configuration: Open eclipse
For example, select install new software.
After you click Add, an example is displayed. Write a name at the name location, click archive, select the ADT location (a compressed package), and perform the following steps in sequence.
The idea is to disconnect the network when installing ADT because it will automatically connect to the Internet. This is for local installation, so there is no need to connect to the Internet.
SDK, about SDK configuration: After the ADT is installed, restart eclipse and click "preference" on Windows.
Then find the SDK path to configure the SDK. For SDK simulator configuration, first open the folder
Then, click SDK manager.exe to install SDK versions online. Here, the SDK is installed online. First install SDK-tool and then install the required version of Android tool.
In this way, the android ADT and SDK are configured ,,,