I have added the web services in ionic 3 but its showing the error after creating apk.
Error: (No ‘Access-Control-Allow-Origin’ header)
Please help me to solve the issue.
The best solution is to enable CORS on the server-side.
Josh Morony has made a nice tutorial about it: https://www.joshmorony.com/dealing-with-cors-cross-origin-resource-sharing-in-ionic-applications/