我在Eclipse中写了一个简单的“hello world”程序，我在java文件中什么都没有加，只在main.xml 中加了text view ，像下边这样：
//main.xml文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello World"
/>
</LinearLayout>
当我运行我的程序的时候，它在控制台显示如下边的错误：
//控制台输出
[2012-09-12 07:10:22 - demo] ------------------------------
[2012-09-12 07:10:22 - demo] Android Launch!
[2012-09-12 07:10:24 - demo] adb is running normally.
[2012-09-12 07:10:24 - demo] Performing com.demo.DemoActivity activity launch
[2012-09-12 07:10:25 - demo] Automatic Target Mode: launching new emulator with compatible AVD 'vishal'
[2012-09-12 07:10:25 - demo] Launching a new emulator with Virtual Device 'vishal'
[2012-09-12 07:11:06 - Emulator] invalid command-line parameter: Files\Android\android-sdk\tools/emulator-arm.exe.
[2012-09-12 07:11:07 - Emulator] Hint: use '@foo' to launch a virtual device named 'foo'.
[2012-09-12 07:11:07 - Emulator] please use -help for more information
//--------------------------------------------------------------------------------/
这表明，因为一些原因我的ACD无法启动，我应该怎么做才能解决这个问题？
