我正在使用以下代码打印包含文本和图像的 HTML 内容。
if (![UIPrintInteractionController isPrintingAvailable]) {
UIAlertView *alertView = [[[UIAlertView alloc]
initWithTitle:NSLocalizedString(@"Printer Availability Error Title", @"")
message:NSLocalizedString(@"Printer Availability Error Message", @"")
delegate:nil
cancelButtonTitle:NSLocalizedString(@"OK", @"OK")
otherButtonTitles:nil] autorelease];
[alertView show];
return;
}
UIPrintInteractionController *pic =
[UIPrintInteractionController sharedPrintController];
if(!pic) {
NSLog(@"Couldn't get shared UIPrintInteractionController!");
return;
}
pic.delegate = self;
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.jobName = @"Sample";
pic.printInfo = printInfo;
NSString *htmlString = [self prepareHTMLText];
UIMarkupTextPrintFormatter *htmlFormatter =
[[UIMarkupTextPrintFormatter alloc] initWithMarkupText:htmlString];
htmlFormatter.startPage = 0;
// 1-inch margins on all sides
htmlFormatter.contentInsets = UIEdgeInsetsMake(72.0, 72.0, 72.0, 72.0);
// printed content should be 6-inches wide within those margins
htmlFormatter.maximumContentWidth = 6 * 72.0;
pic.printFormatter = htmlFormatter;
[htmlFormatter release];
pic.showsPageRange = YES;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
if (!completed && error) {
NSLog(@"Printing could not complete because of error: %@", error);
}
};
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[pic presentFromBarButtonItem:self.myPrintBarButton
animated:YES
completionHandler:completionHandler];
} else {
[pic presentAnimated:YES completionHandler:completionHandler];
}
结果见附件(按比例缩小的版本可能不是很清楚,但希望你能得到图片)。
以下是我的问题:
AirPrint 如何确定打印纸的尺寸?如果我想专门为 A4 纸格式化和打印数据怎么办?
使用上述代码并使用不同的模拟打印机(打印机模拟器)进行打印的结果是,在所有情况下,我在第一页的顶部都有 1 英寸的边距,但在连续页面上却没有。为什么?
使用上述代码和使用不同的模拟打印机(Printer Simulator)打印的结果是,在某些情况下,字体样式会丢失。结果,内容被向下移动。为什么?