ios - Set UIImage to cover the screen for all device screens, xib file -

i have view controller , ui view controller represented through xib file instead of main.storyboard. here how looks like. can see have uiimage view acts background image , suppose cover whole screen.

i trying add 4 constraints: make 4 spacing nearest neighbors equal 0. when use pin constraint option , set pin sides 0, doesn't make spacing nearest neighbor 0 gives me following 4 constraints:

so tried control drag uiimage edge of frame can't either. how can solve issue?

also forgot mention important thing. when run app there black spaces in top , bottom of screen. uiimage not cover whole screen. here picture while app running:

your problem launchscreen.

you need check launchscreen ,if not in correct format or there no launchscreen means kind of problem occurs .