ios - 从 UIWebView 进行 PDF 分页

Question

我正在使用此类从 UIWebView 生成 PDF 文件

-(void)createPDFfromUI:(UIView *)aView saveToDocumentsWithFileName:(NSString*)aFilename
{
    // Creates a mutable data object for updating with binary data, like a byte array
    NSMutableData *pdfData = [NSMutableData data];

    // Points the pdf converter to the mutable data object and to the UIView to be converted
    UIGraphicsBeginPDFContextToData(pdfData, aView.bounds, nil);
    UIGraphicsBeginPDFPage();

    CGContextRef pdfContext = UIGraphicsGetCurrentContext();


    // draws rect to the view and thus this is captured by UIGraphicsBeginPDFContextToData

    [aView.layer renderInContext:pdfContext];

    // remove PDF rendering context
    UIGraphicsEndPDFContext();

    // Retrieves the document directories from the iOS device
    NSArray* documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);

    NSString* documentDirectory = [documentDirectories objectAtIndex:0];
    NSString* documentDirectoryFilename = [documentDirectory stringByAppendingPathComponent:aFilename];

    // instructs the mutable data object to write its context to a file on disk
    [pdfData writeToFile:documentDirectoryFilename atomically:YES];
}

我遇到的唯一问题是它只是在一页中生成 PDF 文件，我只是想知道是否可以将其分成多页。

Answer 1

是的，您的 PDF 中可以包含多页，但为此您必须每次手动使用来标记页面开头

 UIGraphicsBeginPDFPage

这个想法是根据您想要生成的页面数量在 for LOOP 中执行此部分。

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