ios - AirPrint UIImage A4

Question

我的应用程序当前正在创建大小为 2480 3508 的图像(A4 页面)如何将此图像发送到 A4 页面上的 AirPrint？创建图像后，它会将其保存到照片应用程序中，我还想将其发送以进行打印。有任何想法吗？谢谢

Answer 1

您需要使用 UIPrintInteractionController，并将图像设置为 printingItem。根据您选择的打印质量(照片模式或标准)，默认纸张可能小于 a4，但用户可以在打印对话框中选择 a4。

`- (void) printImage: (UIImage *) myImage {
UIPrintInteractionController *controller = [UIPrintInteractionController  sharedPrintController];
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];
    printInfo.outputType = UIPrintInfoOutputPhoto;
    printInfo.jobName = @"Testprint";
    printInfo.duplex = UIPrintInfoDuplexNone;
    controller.printingItem = myImage;
    controller.showsPaperSelectionForLoadedPapers = YES;

   void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
    ^(UIPrintInteractionController *pic, BOOL completed, NSError *error) {
    if (!completed && error)
        NSLog(@"FAILED! due to error in domain %@ with error code %u",
              error.domain, error.code);
       NSLog(@"Completed: %s", (completed?"YES":"NO"));
    };
  [controller presentAnimated:YES completionHandler:completionHandler];
}`