As i uploaded to make my project in to apk file, the result after downloading apk is ‘App not Installed’. I don’t know what is the exact issue is.
Can you give more information?
Where does the ‘App not installed’ message appear? In VoltBuilder, the desktop or on your Android device?
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I notice you have this line in your index.html:
<script src="cordova.js" defer></script>
Try removing the defer.
I once saw this when I had another app already installed with the same certificate.