iOS二維碼掃描組件：QRCodeReaderViewController

QRCodeReaderViewController 是一個用于 iOS 7 的二維碼掃描組件。

使用方法：

- (IBAction)scanAction:(id)sender
{
  QRCodeReaderViewController *reader = [QRCodeReaderViewController new];
  reader.modalPresentationStyle      = UIModalPresentationFormSheet;

  // Using delegate methods
  reader.delegate                    = self;

  // Or by using blocks
  [reader setCompletionWithBlock:^(NSString *resultAsString) {
    [self dismissViewControllerAnimated:YES completion:^{
      NSLog(@"%@", result);
    }];
  }];

  [self presentViewController:reader animated:YES completion:NULL];
}

#pragma mark - QRCodeReader Delegate Methods

- (void)reader:(QRCodeReaderViewController *)reader didScanResult:(NSString *)result
{
  [self dismissViewControllerAnimated:YES completion:^{
    NSLog(@"%@", result);
  }];
}

- (void)readerDidCancel:(QRCodeReaderViewController *)reader
{
  [self dismissViewControllerAnimated:YES completion:NULL];
}

項目主頁：http://www.baiduhome.net/lib/view/home/1418698991777