"Can't find API database; API check was not performed" in Android App SDK with Eclipse [duplicate]

Question

I'm starting a new Android App using the Android SDK on Eclipse, build tools 19.0.2, on a Windows 7 PC. At some point during my work, I started receiving the error "Can't find API database; API check was not performed". This error is not shown in the code but instead shows a red X in the project folder and a line one error in the Problems window. There is a previous question on this topic but that did not work for me. I have already tried adjusting the target and minimum SDK versions in the manifest and re-installed the SDK multiple times. This problem also occurs with the only other project in my work space and shows the same error. Thanks in advance for any help.

Answer 1

For me, Eclipse --> Project --> Clean... is enough set everything right again:

Answer 2

Following works for me:

1. Make sure you installed SDKs listed in your manifest.xml, i.e. mini version and target version.
2. Click the icon with red x on the right hand side tool bar, which has tip of 'Problems(...)' if you move your cursor over it.
3. Right click on your error, choose quick fix.
4. Choose Disable Check in This Project