Question

我有一个包含静态和动态数据的html文件，我需要从该html文件生成PDF文件。我能够创建PDF文件，但它只打印第一页。我需要一个三页的PDF文件。我使用了以下两个函数来绘制和保存PDF文件。我的代码是：

func exportHTMLContentToPDF(HTMLContent: String) {

    let printFormatter = UIMarkupTextPrintFormatter(markupText: HTMLContent)

    let printPageRenderer = CustomPrintPageRenderer()

    printPageRenderer.addPrintFormatter(printFormatter, startingAtPageAt: 0)

    let pdfData = drawPDFUsingPrintPageRenderer(printPageRenderer: printPageRenderer)

    pdfFilename = "\(AppDelegate.getAppDelegate().getDocDir())/FinalPdf.pdf"

    pdfData?.write(toFile: pdfFilename, atomically: true)

    print(pdfFilename)

}

func drawPDFUsingPrintPageRenderer(printPageRenderer: UIPrintPageRenderer) -> NSData! {

    let data = NSMutableData()

    UIGraphicsBeginPDFContextToData(data, CGRect.zero, nil)

    UIGraphicsBeginPDFPage()

    printPageRenderer.drawPage(at: 0, in: UIGraphicsGetPDFContextBounds())

    UIGraphicsEndPDFContext()

    return data

}

我已经关注了app coda教程。对于多个页面，它表示包括PDF页面创建的开始和打印页面渲染器绘制到循环中。请帮我创建多页PDF。

Answer 1

使用下面的代码代替您当前的drawPDFUsingPrintPageRenderer函数：

// let causes the variable to have block level scope and with a loop
// that means that a separately scoped variable is created for each
// loop iteration. This allows each iteration to have its own unique
// value for the variable that doesn't share a higher level scope.
for (let i = 0; i < 5; i++) {
        var btn = document.createElement("button");
        btn.onclick = function(){alert(i);}
        btn.innerHTML = "Button " + i;
        document.body.appendChild(btn);
}

Viola，多页。

无法在Swift中生成多页PDF

1 个答案: