I generated iOS build from my worklight project and uploaded to IBM Application Center. I have added icon.png 128x128 resolution and thumbnail.png 90x90 in my common\images folder.
In application center it display a blurry icon with resolution 57x57. I am not sure how application center take the reference of the icon from .IPA file. Please share your suggestion.
Note: In Worklight Console, app icon displays perfect, no issues.
Worklight Console and the Application Center management console are 2 separate entities.
When you deploy the .wlapp file - you essentially deploy it to the Worklight Server > database. The Worklight Console in turn receives from the server the data you then see in the console, including the common\images\thumbnail.png image for the application. That is not the same as the app icon.
In contrast, to the Application Center management console (server > database...) you are deploying the .ipa file that Xcode generated for you - that's very much different from the .wlapp file previously mentioned.
Please make sure you are providing in your application app icons with the correct filenames, per the guidelines from Apple, for example:
57x57 Icon.png
114x114 Icon@2x.png
72x72 Icon-72.png
144x144 Icon-72@2x.png