How can i resize the app display in xcode

hey guys i’m using xcode with cocos2d-x 4.0 version.

i made a game and i’m readying to release for ios.

then my game display size matched with android and i wanna match with ios display size too. !

but i used fixing size in android.

so when i installed my game in ios, it had so big space.

i wanna remove this big space because if i use virtual keypad, when the keypad rise up, the big space rise up too. so it’s weired !!

please help me bros…

Why not post some screenshots? A picture is worth a 1000 words, so the saying goes.