iOS : How to detect any key pressed when use a BT keyboard

Question

I have to implement a manufacturer keyboard test app of iOS on iPad.

I am surveying on this topic right now.

According to this article

[_myUITextField becomeFirstResponder];
[_myUITextField addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventAllEvents];
}

-(IBAction)textFieldDidChange:(id)sender{
    UITextField *_field = (UITextField *)sender;
    NSLog(@"%@",[_field text]);
}

With these code I can detect the letter(like 1,2,3,a,b,c...) I pressed in my app, but not all key pressed (like fn, ctl, cmd ...etc?)

Anyone know how to achieve this...thanks^^

BTW, I do not care if it's a public or private API be use. – Gray lin Dec 21 '13 at 08:20 — Gray lin, Dec 21 '13 at 08:20

score 0 · Answer 1 · answered Dec 21 '13 at 10:12

0

Try Notification center instead.

 NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];

UITextField :

[notificationCenter addObserver:self
                   selector:@selector (textFieldText:)
                       name:UITextFieldTextDidChangeNotification
                     object:yourtextfield];

answered Dec 21 '13 at 10:12

Snowmanzzz

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5
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Hi man, thanks first, but the result is the same as previous method, it can't detect any key as well. – Gray lin Dec 22 '13 at 08:25

iOS : How to detect any key pressed when use a BT keyboard

1 Answers1