A simple QRView
add Code like this where you need scan
AKQRCodeView *scanView = [[AKQRCodeView alloc]initWithFrame:CGRectMake(([UIScreen mainScreen].bounds.size.width - 200) / 2, ([UIScreen mainScreen].bounds.size.height - 200) / 2, 200, 200)];
scanView.warningToneFileName = @"sound.mp3";
[self.view addSubview:scanView];
[scanView startScan];
scanView.getStringValue = ^(NSString *stringValue) {
NSLog(@"_______ StringValue: %@",stringValue);
// Use stringValue here
};
Demo will show you the details.