如何在 iOS 4.2 中打印? [英] How to print in iOS 4.2?

问题描述

我想在我的应用中集成打印功能.

I want to integrate the print functionality in my app.

我要打印的文档为 .doc 或 .txt 格式.我在 iPhone 开发方面还不是很有经验，所以很难按照 Apple 的文档来实现它.

The document I want to print will be in .doc or .txt format. I am not very experienced in iPhone development yet, so finding it difficult to implement it by following the Apple documentation.

如果有人可以通过发布一些示例代码来帮助我，那将是一个很大的帮助.

If someone could help me by posting some sample code, will be a great help.

推荐答案

查看iOS 绘图和打印指南 -- 我链接到打印部分.那里有示例代码和指向更多示例代码的良好链接.

Check out the Drawing and Printing Guide for iOS -- I linked to the printing section. There's sample code and good links to more sample code there.

编辑:我现在看到您表示您发现文档难以遵循.

Edit: I see now that you indicate you find the documentation difficult to follow.

Word 文档很复杂——您需要解析数据，这非常困难.

Word documents are complicated -- you'll need to parse through the data, which is quite difficult.

文本和 HTML 更容易.我采用了 Apple 的 HTML 示例并将其更改为纯文本:

Text and HTML are easier. I took Apple's example for HTML and changed it for plain text:

- (IBAction)printContent:(id)sender {
    UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
    pic.delegate = self;

    UIPrintInfo *printInfo = [UIPrintInfo printInfo];
    printInfo.outputType = UIPrintInfoOutputGeneral;
    printInfo.jobName = self.documentName;
    pic.printInfo = printInfo;

    UISimpleTextPrintFormatter *textFormatter = [[UISimpleTextPrintFormatter alloc]
                                                 initWithText:yourNSStringWithContextOfTextFileHere];
    textFormatter.startPage = 0;
    textFormatter.contentInsets = UIEdgeInsetsMake(72.0, 72.0, 72.0, 72.0); // 1 inch margins
    textFormatter.maximumContentWidth = 6 * 72.0;
    pic.printFormatter = textFormatter;
    [textFormatter 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:sender animated:YES completionHandler:completionHandler];
    } else {
        [pic presentAnimated:YES completionHandler:completionHandler];
    }
}

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