iphone - iOS AirPrint-打印多个URL

遵循此帖子中的问题：
Unable to display printer options with AirPrint

我有几个问题：

1）答案之一是将Controller.printItem设置为URL。同样，我可以设置多个URL吗？基本上，我需要一次打印一组URL。是否可以将controller.printitems设置为URL数组？另外，我知道controller.printItem的类型为“数据”，那么如何将基于Web的图像URL转换为“数据”类型？

2）由于某些奇怪的原因，默认情况下，每次我进入打印对话框时，双面都设置为on。我需要将该变量设置为什么？如果我不能向用户显示该选项，那就太好了。

最佳答案

试试此代码可能对您有帮助

- (IBAction)btnPrintTapped:(id)sender {
    NSData *imageData = UIImagePNGRepresentation(self.imgV.image);
    [self printItem:imageData];
}

#pragma mark - Printing

-(void)printItem :(NSData*)data {
    printController = [UIPrintInteractionController sharedPrintController];
    if(printController && [UIPrintInteractionController canPrintData:data]) {
        printController.delegate = self;
        UIPrintInfo *printInfo = [UIPrintInfo printInfo];
        printInfo.outputType = UIPrintInfoOutputGeneral;
        printInfo.jobName = [NSString stringWithFormat:@""];
        printInfo.duplex = UIPrintInfoDuplexLongEdge;
        printController.printInfo = printInfo;
        printController.showsPageRange = YES;
        printController.printingItem = data;
        void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) = ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
            if (!completed && error) {
                //NSLog(@"FAILED! due to error in domain %@ with error code %u", error.domain, error.code);
            }
        };
        [printController presentFromBarButtonItem:self.item animated:YES completionHandler:completionHandler];
    }
}

- (BOOL)presentFromRect:(CGRect)rect inView:(UIView *)view animated:(BOOL)animated completionHandler:(UIPrintInteractionCompletionHandler)completion {
    return YES;
}

- (BOOL)presentFromBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated completionHandler:(UIPrintInteractionCompletionHandler)completion {
    return YES;
}

关于iphone - iOS AirPrint-打印多个URL，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/10102392/