Iosapp with black edges up and down

This situation is caused by no start page, and after the start page picture is added, it will not appear again.

To set the Startup page method:

Http://www.cnblogs.com/BK-12345/p/5218229.html

Some people say I added Ah, but still appeared, that is how it happened????

In fact, it is very simple, because the size of the image on the start page is incorrect. You can look at it if you don't believe it. It must be the wrong size of your picture.

By the way, the size of Apple's four launch pages (7.0 and 8.0 are compatible with four, 7-9 have two, 8-9 have two)

7-9 the size of the start page is 640*960 (corresponding to 2X is 3.5 inch screen) and 640*1136 (corresponding to 4 inch screen)

8-9 the size of the start page is 1242*2208 (corresponding to the 5.5-inch screen) and 750*1334 (corresponding to the 4.7-inch screen)

Now Xcode8.2 minimum Support iOS8 system, set the Start page, the right side will have a reminder, app-compatible version how many start page pictures are different, the app icon is the same

Select the icon or the start page to see which version is compatible to the right (feeling is generally compatible to 7.0 is very good), this compatibility is only the app icon or start page compatible, does not mean that the program is compatible.

Iosapp with black edges up and down