Eclipse New Project (From Sample) Defaults to Errors

I don't know much about Java or Android development, so I'm digging into it myself. But I noticed that if I open sample code 开发者_如何转开发that came with my new 2.2 SDK, Eclipse by default will contain errors until I open up specific files. Is this normal for IDEs? Or is there something I'm missing?

I am having to use Eclipse 3.5.2 since Google said there is issues with the new version and the 2.2 SDK (or was it the Android Plugin?)

The better way is install once again like following:

download ->http://www.eclipse.org/downloads/

download ->http://developer.android.com/sdk/index.html

And place that in one new folder. select->\android-sdk-windows\tools\emulator.exe (install packages if u need..refresh)

now open the eclipse select help-> install new software... and select "android-sdk-windows"

and before open the eclipse create one new folder to workspace (save projects).

This also seemed to may be a bug in what series of installs I was using and versions. Though updates I now notice no problems what so ever.