I got this error when trying to export a signed apk in Eclipse
Error while running zipalign: Unable to open as zip archive
I have run the Help->Check for Updat
This is your mistake
You are trying to set or reference zipalign first and then run zipalign -v 4 app-release-unsigned.apk HelloWorld.apk
No, this is what you should do, set the zipalign reference and run the command at the same time
like this
/Users/s****/Library/Android/sdk/build-tools/28.0.3/zipalign -v 4 app-release-unsigned.apk MyApp.apk
Your apk will build immediatelly.