Question

我正在使用代码创建PDF文件。的工作原理。

但是：我希望我的PDF文件中的整个UITableView（我需要滚动），而不仅仅是当前显示在屏幕上的视图部分。另外我需要将三个textField添加到同一个文件PDF中这必须是视图的所有内容（三个textField和tableView与所有单元格）因为这是一张发票有没有办法实现这个目标？我使用以下代码

- (void)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, self.view.bounds, nil);
    UIGraphicsBeginPDFPage();
    CGContextRef pdfContext = UIGraphicsGetCurrentContext();


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

    [self.view.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];


    [pdfData writeToFile:documentDirectoryFilename atomically:YES];

}

但是它作为图像的视图和tableView的剩余单元格所包含的问题不包括PDF文件

Answer 1

UIView *viewToRender = self.tableView;
CGPoint contentOffset = self.tableView.contentOffset;

UIGraphicsBeginImageContext(viewToRender.bounds.size);

CGContextRef ctx = UIGraphicsGetCurrentContext();

//  KEY: need to translate the context down to the current visible portion of the tablview
CGContextTranslateCTM(ctx, 0, -contentOffset.y);

[viewToRender.layer renderInContext:ctx];

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();


try this

如何将带有tableView的textField插入到PDF文件中

1 个答案: