Launchscreen.storyboard startup page Settings The picture does not display the startup page screen

Problem Description: After modifying the Launchscreen's startup diagram, I find that the load is still before the picture.
Problem solving ideas: think is the problem of caching, by restarting Xcode, remove app Reinstall, Cleanxcode found It don ' t work;
How about that.
The solution was found by searching the Web:
1. Modify the image name of the start chart;
2. Place the catalog of the picture under the directory of the file (if you need to move in the Assets.xcassets).

Evaluation: This should be a bug on the iOS system;