ios - Change navigation bar title from text entered in a text field with Objective C -

i want title @ top of page in navigation bar change based on text entered specific text field. through separate uinavigationcontroller or in uiviewcontroller, , if how work?

you don't need separate uinavigationcontroller; can set title with

self.navigationitem.title = titletextfield.text; 

if set view controller delegate of uitextfield, , implement method:

- (bool)textfield:(uitextfield *)textfield shouldchangecharactersinrange:(nsrange)range replacementstring:(nsstring *)string {     if (textfield == titletextfield) {         self.navigationitem.title = [textfield.text stringbyreplacingcharactersinrange:range                                                              withstring:string];     }     return yes; } 

you'll title updates in real time. (remember method called before textfield.text changes, that's why there stringbyreplacingcharactersinrange:withstring: call in it.)