小编din*_*uru的帖子

我有一个uipageviewcontroller并在uipageviewcontroller中设置了一个名为contentviewcontroller的子视图控制器.

thePageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation: UIPageViewControllerNavigationOrientationHorizontal options:nil];

    thePageViewController.delegate = self;
    thePageViewController.dataSource = self;

    thePageViewController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;

    contentViewController = [[HBDocumentChildViewController alloc] initWithPDF:PDFDocument];
    contentViewController.page = [modelArray objectAtIndex:0];
    NSArray *viewControllers = [NSArray arrayWithObject:contentViewController];
    [thePageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

    [self addChildViewController:thePageViewController];
    [self.view addSubview:thePageViewController.view];
    thePageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
    [thePageViewController didMoveToParentViewController:self];
    self.view.gestureRecognizers = thePageViewController.gestureRecognizers;
    self.view.backgroundColor = [UIColor underPageBackgroundColor];

我已经完成了借助滚动视图类(pdfScrollView)将pdf文件加载到uipageviewcontroller中的页面.followig是uipageviewcontroller的内容类并初始化uiscrollview类.

#import "HBDocumentChildViewController.h"

@interface HBDocumentChildViewController ()<UIWebViewDelegate>
{
    int currentPage;
    NSString*localPath;
}

@end

@implementation HBDocumentChildViewController

#pragma mark - View lifecycle

- (void)viewDidLoad
{ …

我可以找到一些代码来跳过打印UI并通过Air Printer直接打印.但代码不完整.代码如下,

 UIPrinterPickerController *printPicker = [UIPrinterPickerController printerPickerControllerWithInitiallySelectedPrinter:self.savedPrinter];
    [printPicker presentAnimated:YES completionHandler:
        ^(UIPrinterPickerController *printerPicker, BOOL userDidSelect, NSError *error) {
        if (userDidSelect) {
            self.savedPrinter = printerPicker.selectedPrinter;
        }
    }];

在这段代码中,提到了self.savedPrinter.但是我如何在这里获得保存的打印机.请给我一个完整的答案或样本解决方案.