After successfully building the AppCenter client application and launching it in an iOS device, my problem is that when I enter my Worklight Server credentials, the server URL and the port and with or without the applicationcenter context, the loading progress keeps running...
How to solve this issue?
I agree with Idan, first thing to do is to run the application center client on the iOS emulator and look at the device logs. I have seen the loading never ending when the client was not compiled correctly, note that the native folder of the application center client worklight project contains native code (a cordova plugin) that needs to be present in order for the application to run properly. If this is the problem you are facing, the cordova log will tell you that the plugin named 'com.ibm.mobile.InstallerPlugin' is missing.