Android开发-emulator-5554 disconnected错误解决办法

Android第一步-helloworld开发实例错误：
[2012-01-10 14:59:20 - helloworld] emulator-5554 disconnected! Cancelling 'com.hitsoft.helloworld.HelloworldActivity activity launch'!
[2012-01-10 15:06:27 - helloworld] ------------------------------
[2012-01-10 15:06:27 - helloworld] Android Launch!
[2012-01-10 15:06:27 - helloworld] adb is running normally.
[2012-01-10 15:06:27 - helloworld] Performing com.hitsoft.helloworld.HelloworldActivity activity launch
[2012-01-10 15:06:27 - helloworld] Automatic Target Mode: launching new emulator with compatible AVD '1.6'
[2012-01-10 15:06:27 - helloworld] Launching a new emulator with Virtual Device '1.6'
[2012-01-10 15:06:40 - Emulator] emulator: WARNING: Unable to create sensors port: Unknown error
[2012-01-10 15:06:40 - helloworld] New emulator found: emulator-5554
[2012-01-10 15:06:40 - helloworld] Waiting for HOME ('android.process.acore') to be launched...
[2012-01-10 15:08:01 - helloworld] emulator-5554 disconnected! Cancelling 'com.hitsoft.helloworld.HelloworldActivity activity launch'!

解决办法：
新增一个环境变量为 "ANDROID_SDK_HOME”，然后把变量值改为你想将".android”文件夹(AVD信息)所放置的位置，在这里我把它设置为Android SDK包中，值为："E:\android\android-sdk_r16-windows\android-sdk-windows"，问题解决了。

正确日志：
[2012-01-10 15:14:37 - helloworld] Android Launch!
[2012-01-10 15:14:37 - helloworld] adb is running normally.
[2012-01-10 15:14:37 - helloworld] Performing com.hitsoft.helloworld.HelloworldActivity activity launch
[2012-01-10 15:14:37 - helloworld] Automatic Target Mode: launching new emulator with compatible AVD '1.6'
[2012-01-10 15:14:37 - helloworld] Launching a new emulator with Virtual Device '1.6'
[2012-01-10 15:14:43 - Emulator] emulator: WARNING: Unable to create sensors port: Unknown error
[2012-01-10 15:14:43 - helloworld] New emulator found: emulator-5554
[2012-01-10 15:14:43 - helloworld] Waiting for HOME ('android.process.acore') to be launched...
[2012-01-10 15:15:04 - helloworld] HOME is up on device 'emulator-5554'
[2012-01-10 15:15:04 - helloworld] Uploading helloworld.apk onto device 'emulator-5554'
[2012-01-10 15:15:05 - helloworld] Installing helloworld.apk...
[2012-01-10 15:15:13 - helloworld] Success!
[2012-01-10 15:15:13 - helloworld] Starting activity com.hitsoft.helloworld.HelloworldActivity on device emulator-5554
[2012-01-10 15:15:18 - helloworld] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.hitsoft.helloworld/.HelloworldActivity }