First Settings in a your project info-list set key Icon
already inculdes gloss effects to YES Boolean value like below screen shot:
首先在plist文件里添加一个属性Icon already inculdes gloss effects，然后设置为YES
after try project Target settings tick the checkbox in
the summary tap
in the App
Icons section like below screen shot:
在target设置里把Prerendered打上对号就ok了
it is working for me!
Welcome in Advance!