ios - how to set the values for UIEdgeinset for button -

i wanted increase button touch area without without increasing original size.

when comes insets there many in button , there no clear documentation find on differences

• content insets

• title insets

• image insets

so later on thought try on content inset. according other stack overflow answers settings negative value co-ordiantes(left,top,right,bottom) increase touch area of button without increasing width , height.

but interfacebuilder doesn't allow me enter values on all.

for example if enter -10 in left , couldn't enter -10 in right , others that.

i confused on can me unravel complexity

thanks

try this:

func setupbutton(button: uibutton) {     button.titleedgeinsets = uiedgeinsetsmake(top, left, bottom, right)     button.imageedgeinsets =  uiedgeinsetsmake(top, left, bottom, right)     button.contentedgeinsets =  uiedgeinsetsmake(top, left, bottom, right) } 

you can refer this link more elaborated answer.