Text from UITextFieldTextDidChangeNotification

Question

I have a UITextField with this NSNotification:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textFieldDidChange:) name:@"UITextFieldTextDidChangeNotification" object:_searchTextField];

- (void)textFieldDidChange :(NSNotification *)notif 
    {
     //
    }

The NSLog is when I type in r

NSConcreteNotification 0x193c20 {name = UITextFieldTextDidChangeNotification; object = <UITextField: 0x15a980; frame = (20 20; 280 31); text = 'r'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; layer = <CALayer: 0x15aad0>>}

How do I get the text r out of the notif object?

You should use the constant UITextFieldTextDidChangeNotification (declared in UITextField.h) instead of passing your own NSString as the "name" argument — Christophe Fondacci, Mar 12 '15 at 16:11

score 16 · Accepted Answer · answered Mar 31 '12 at 09:45

16

The notification's object property stores the text field whose text changed, so notif.object.text would contain the text "r".

answered Mar 31 '12 at 09:45

yuji

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Its giving an error - Property 'text' not found on object of type 'id' – daihovey Mar 31 '12 at 11:18
6

Do `[(UITextField*)notif.object text]` instead – yuji Mar 31 '12 at 11:32
1

Ah yep, so I had to: UITextField* txt = (UITextField*)notif.object; NSlog(@"%@",txt.text); – daihovey Mar 31 '12 at 11:40

Text from UITextFieldTextDidChangeNotification

1 Answers1