我该如何在iPhone或iPad上允许用户打印文档或页面?哪些版本的iOS支持打印?
以下是一个简单的代码。
-(void)printItem {
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, YES, 0);
CGContextRef context = UIGraphicsGetCurrentContext();
[self.view.layer renderInContext:context];
UIImage *imageFromCurrentView = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIPrintInteractionController *printController = [UIPrintInteractionController sharedPrintController];
printController.printingItem = imageFromCurrentView;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGrayscale;
printController.printInfo = printInfo;
printController.showsPageRange = YES;
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 presentAnimated:YES completionHandler:completionHandler];
}