You may download the bundle Eclipse+ADT here http://developer.android.com/sdk/index.html , unzip. Inside the folder (after extraction) you will find the Eclipse and sdk folder. Find the eclipse.exe in the eclipse folder to run the IDE.
You may find the eclipse.exe in the <installation-folder>/eclipse/ . Now, You’re good to develop your first Android native app. The installation file is about 400MB.
As mentioned in the Android developer official site, do not attempt to remove any of the folder inside the bundle or you’ll end up messing the default configuration, resulting malfunction in the ADT.
Optional: In case you already have previously install ADT, you might need to tweak the Android preferences setting to point the new Android SDK folder. Go to Window –> Preferences and choose Android options. Reset the SDK location by pointing to the new SDK location. Bear in mind that the new ADT bundle only provides the latest Android platform (API level 17 – currently). And this ADT bundle supports ADT version 21.
What you will get with a single download;
- Eclipse + ADT plugin
- Android SDK Tools
- Android Platform-tools
- The latest Android platform
- The latest Android system image for the emulator