Programmatically discover identity of first responder

Question

I want a UITextField to be sent the resignFirstResponder message if it is being edited and a user touches elsewhere on the screen. Since there are several text fields I need a way to programmatically determine which one is the first responder to send it the message. How can I do this? Is there some sort of global first responder object?

Thanks, Jacob

duplicate of http://stackoverflow.com/questions/1823317/how-do-i-legally-get-the-current-first-responder-on-the-screen-on-an-iphone — mvds, Aug 07 '10 at 23:22

score 0 · Answer 1 · answered Aug 07 '10 at 23:08

0

UITextField inherits from UIResponder so you can use isFirstResponder (which returns a BOOL) to query it.

if ([myTextField isFirstResponder]) {
    // do stuff
}

answered Aug 07 '10 at 23:08

nevan king

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Let's say a user is editing a UITextField in a UITableViewCell and he taps the background in another UITableViewCell. That UITableViewCell has no access to its sibling UITableViewCells, so I would have to pass a message up to a parent view to pass another message back down to all the cells. Is this what you recommend? – Jacob Lyles Aug 07 '10 at 23:13

score 0 · Accepted Answer · edited May 23 '17 at 11:47

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The simplest way is to find the first responder and tell it to resignFirstResponder.

edited May 23 '17 at 11:47

Community

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answered Aug 08 '10 at 07:11

rpetrich

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Programmatically discover identity of first responder

2 Answers2