ios - Custom shaped buttons objective-c -


i'm building app kids lots of interactive image objects (click on pic & result)

for example: have cat on screen , click on need produce sound.

after having read lots of info got idea it's impossible transform parts of image clickable objects.

while there lots of games on app store contains lots of custom shaped clickable objects. how did manage this?

what need read answer? thank in advance.

update: can have clipart images vector-graphic, e.g. .svg file. make situation simpler?

implement each image uibutton , set background of each button image desired. (setbackgroundimage)

links: https://developer.apple.com/library/ios/documentation/uikit/reference/uibutton_class/


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