Start Android, download eclipse from the Eclipse official website, and never install it again.

From Android Studio 1.0 to the world,

Want to use Eclipse to launch Android, but because Android's official internet Android Developer (http://developer.android.com/sdk/index.html)
The Eclipse ADT Bundle (also known as the Eclipse ADT Integration Pack) is not available for download,

So to start Android in Eclipse:
You can:
(1) Update ADT plugin. This update and installation step is detailed in another blog post: http://9659784.blog.51cto.com/9649784/1602492

Or:
From (2) Eclipse official web download Eclipse,
This is the detail of this article that you can never install again.

And then it's done from the head.

0. Because Java's JDK may not yet be installed, you can
(1) in command-line mode, under C:\>, hit "java-version" to determine if there is an installation,
(If you don't want to check for direct installation, you won't be able to produce different versions of the conflict, because you can choose which version to start with in Eclipse)
Or:
(2) Browse to the installation location of the Java program with your files. This example uses (Jdk-7u25-windows-i586.exe) is Java 7.0 32-bit.
So first check C:\Program Files (x86) \java There is no jdk1.7.0_25 folder.

1. First download eclipse,

You can:
(1) Select the one you want:
To http://www.eclipse.org/downloads/packages/
Choose a download that you want.
You can choose the latest eclipse download (currently the latest Mars), (Eclipse Update is fast, last month the newest is Luna),

Or:
(2) Follow me to:
Https://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/junosr2
Download the Java EE version of the Eclipse development environment.
(This example is Android from Java EE, so i downloaded the Java EE version of Eclipse development.)
I chose to use the ready-made Juno, the operation of the interface is not a big difference.)

(In this case, the 32-bit windows_x86 is chosen for the installation, if you choose Windows x86_64),
In Windows 7 or more of the operating system two support, choose any one can, it is important to be consistent with your Java JDK.

2.Eclipse decompression can be done to open the Eclipse.exe, but don't start

3. Download the Adt-2x.x.x.zip:
Http://developer.android.com/sdk/installing/installing-adt.html
(Currently the newest is 24.0.2 but the web provides only to 23.0.4)

5. Do not decompress the adt-2x.x.x.zip, put in the same layer with the Eclipse.exe folder.

4. Then open Eclipse. Then select a file folder or enter a custom name to add a folder to the workspace. ".
5. This is the welcome screen of the Eclipse Java EE. Go directly to the project Explorer, where you can see the development environment.

6. Install Android Development Tools Plugin (external).
Help→install New Software Click: In the upper right corner of the dialogue window [ADD] button, select [Archive]

6. Take a look at what the Java EE has installed: to Help→install New sofeware→ There is a hyperlink to [what ' s already installed] in the right-hand side of the conversation window.

9. Click on the developer Tool, select all, press next→ to enter the install Detail next→ into the review license (see currently there are five major purposes hanging) need to agree to the terms of the license,
In the lower right corner agree to make a tick, on behalf of all agree.
Press [Finish] to start downloading.

10. Download the degree, you can see the details according to detail.
11. Press [OK] to agree to the procured (unsigned content) can also be downloaded.
12. Re-open Eclipse.
13. Ask if you want to install a new Android SDK, or choose an installed Android SDK location.
14. Select the SDK tool you want, SDK Platform tool, SDK build tool and
SDK Platform for Android 5.0.1 (API 21).
(To be able to run Google Maps on Android virtual machine I chose Google API x86)

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Start Android, download eclipse from the Eclipse official website, and never install it again.