ios - How to keep keyboard and dissmiss after finish with UIView -

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i have uiview few uitextfields. on load call [textfield becomefirstresponder] bring keyboard on screen. don't want dismiss keyboard until done view.

keyboard dissapear after "touch" outside textfield.

i tried set 

- (bool)textfieldshouldendediting:(uitextfield *)textfield {     return no; }

however can't dismiss keyboard after unloaded. hints how keep keyboard time , dissmiss before uiview remove?

when viewwilldisappear (or viewdiddisappear) called, call resignfirstresponder on uitextfield.

    - (void) viewwilldisappear:(bool) animated {           [self.textfield resignfirstresponder];     }

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