Problem Overview:
The following error is prompted after an app is imported:
"Error generating final archive: Debug certificate expired on 10/09/18"
Cause analysis:
Android requires allProgramA signature is required. Otherwise, the program will not be installed. During our development process, ADT uses debug keystore and sets it in preference-> Android-> buid. By default, the debug keystore is valid for one year. If you finish the android program from a year ago, the debug keystore may expire when you import the app one year later, as a result, you cannot generate an APK file.
Now you only need to delete the debug keystore, and the system will generate a private key valid for one year for you.
Solution:
Go to debug. keystore and ddms. cfg in the C: \ Documents and Settings \ Administrator \. Android deletion path.
(Directories in different environments may be slightly different. You can find this path in Eclipse: window-> preferences-> Android-> default debug keystore under build)
Then re-import.