objective c - IOS: action with enter key of iPad KeyBoard -

i have 2 textfield, in first textfield write "hello" , when push enter in ipad keyboard, want in second textfield appear "world"; how can use enter create action in application?

you typically assign view controller text field's delegate , implement textfieldshouldreturn: method, e.g.:

- (bool)textfieldshouldreturn:(uitextfield *)textfield {     othertextfield.text = @"world"     return yes; }