Black-out on the screen when the Xcode7/ios9 version of the app is running

When Xcode is upgraded from a low version to 7.0 or later, some of the lower versions of the app are compiled again, and when the app is running on the device, black edges appear at the top and bottom. This led to the app's display interface shrinking and becoming very ugly.

For this problem, find Niang, did not find a similar solution. Some people say that the platform in the content of the Xcode package in the lower version is added to the platform of the higher version of Xcode, which can be resolved. But I personally tested, found still not effective.

Now give a solution to your own success:

Select Target-->general-->app icons and launch images-->launch screen file--> Select a storyboard file, compile and run, package, Black edge problem no longer appears!

Black-out on the screen when the Xcode7/ios9 version of the app is running