[android] Project has no default.properties file! Edit the project properties to set one

When importing to Eclipse project, I accidentally did:

BAD: Import... >> General >> Existing Proejcts into Workspace

when I should have done instead:

GOOD: Import... >> Android >> Existing Android Code Into Workspace

Removing the project imported with first method, and then re-importing it with the second method solved the problem for me.

(Others have written similar answers but I didn't get it until the explicit comparison.)