Question

Here a question for the pros…
I’m developing an application on Ipad and i’m using a barcode reader with bluetooth. I have sync the barcode reader with my Ipad and I can catch the text on a textField without problems.
When I read a barcode I don’t want to put it on a textField, I want to catch it on a class, process it and decide what to do with it. I have searched on the internet the way to do it but I can’t find it. Someone can help me? Can I do a class the delegate to receive the input strings?

I’m a little lost with it and any help will be very usefull for me

Thanks for your time!!

Answer 1

I have solved the problem creating a hide textfield that become the first responder when the viewcontroller is created. After I have did the same viewController the delegate of this text field. When the BT codebar reader do a read he makes a return at the end so it calls the – (BOOL)textFieldShouldReturn: where I process the information. I hope that will be usefull for someone in the futur with the same problem. I post the code:

_textSender = [[UITextField alloc] initWithFrame:CGRectMake(150, 300, 300, 25)];
[_textSender setBackgroundColor:[UIColor whiteColor]];
[self.view addSubview:_textSender];
_textSender.hidden=YES;
[_textSender becomeFirstResponder];
_textSender.delegate=self;


- (BOOL)textFieldShouldReturn:(UITextField *)textField{
[messageSenderProtocolDelegate message:textField.text];
return YES;
}

It’s not a beatiful way to do it and it gives me a little problem, when the BT barcode disconnects the keyboard appears and that’s not good for me. I want my view clean without keyboards all the time. Now I will research if it’s a function that is called when the keyboard shows to prevent him to be show

If someone have any advice it will be usefull but say thanks for your help Erik!