As far as "re-installing" Android SDK, all I have is the following .ZIP file:
android-sdk_r18-windows.zip
which I re-extracted. This placed "AVD Manager.exe" and "SDK Manager.exe" in my "android-sdk-windows" folder. Tried again to run both programs, but all they do is VERY temporarily open a command window which immediately disappears. Is there some other method to "install" the Android SDK? There is no "Android SDK" in my list of installed programs that can be uninstalled. I'm running Windows 7 Home Premium SP1.
Did some investigating. Found out that I have SIX "AVD Manager.exe" files on my C:\ Drive. Only two of them are in a "...tools\lib" folder (neither of these being one where I did the ZIP file extraction), and when I try to run these two from their folders in Windows, they open in a command window, but I get an error saying that the "android.bat" file cannot be found. The "android.bat" files are found in the associated next higher "...tools" folder. The other four "AVD Manager.exe" files do the original brief opening of a command window and then the window disappears.
If I try running the "SDK Manager.exe" files found in the same folders as the "AVD Manager.exe" files, I get the same kind of results -- four open the brief command windows, and the other two lead to the "android.bat file can't be found" message.
Why can Eclipse open and, I assume, run one of these, but I can't do it manually, and which one is it that runs?
Incidentally, can only try running any of these files from a command window prompt by placing the whole file name in quotes (due to the space found in the file name). If I run the file name using quotes, or re-name the file to not have a space, I get the same "android.bat file not found" error.