Question

Using the below code, the issue is I have two buttons and two textfields but I am getting the qrcode value using single method. How can i use it for two textfields

- (IBAction) keyScanButtonTapped
{

NSLog(@"TBD: scan barcode here...");

// ADD: present a barcode reader that scans from the camera feed
ZBarReaderViewController *reader = [ZBarReaderViewController new];
reader.readerDelegate = self;
reader.supportedOrientationsMask = ZBarOrientationMaskAll;

ZBarImageScanner *scanner = reader.scanner;
// TODO: (optional) additional reader configuration here

// EXAMPLE: disable rarely used I2/5 to improve performance
[scanner setSymbology: ZBAR_I25 config: ZBAR_CFG_ENABLE to: 0];

// present and release the controller
[self presentModalViewController: reader animated: YES];

[reader release];

}

-(void) imagePickerController: (UIImagePickerController*) reader didFinishPickingMediaWithInfo: (NSDictionary*) info
{

// ADD: get the decode results

id<NSFastEnumeration> results = [info objectForKey: ZBarReaderControllerResults];

ZBarSymbol *symbol = nil;

for(symbol in results)
    // EXAMPLE: just grab the first barcode
    break;

// EXAMPLE: do something useful with the barcode data

deviceKey.text = symbol.data;

// EXAMPLE: do something useful with the barcode image

resultImage.image = [info objectForKey: UIImagePickerControllerOriginalImage];

// ADD: dismiss the controller (NB dismiss from the *reader*!)
[reader dismissModalViewControllerAnimated: YES];
}

Answer 1

Do you simply want to connect two different buttons to this same function? That is no problem just go into interface builder and connect both buttons to this method. You can see this question on how to connect buttons in interface builder

How can I connect "File's Owner" with a button in a Toolbar?

when the callback function is called you can identify which button called the function in such a manner

-(void)buttonPressed:(id)sender{
    //find out which button was pressed
    UIButton * pressed = (UIButton*) sender;
    NSInteger tag = pressed.tag;
}

the tags are defined in the interface builder, just make sure that they are different for the two buttons and you are good to go.