我在互联网和堆栈上阅读和搜索了很多,但我有一个问题
我用过这个扩展
extension UITableView {
// Export pdf from UITableView and save pdf in drectory and return pdf file path
func exportAsPdfFromTable() -> String {
self.showsVerticalScrollIndicator = false
let originalBounds = self.bounds
self.bounds = CGRect(x:originalBounds.origin.x, y: originalBounds.origin.y, width: self.contentSize.width, height: self.contentSize.height)
let pdfPageFrame = CGRect(x: 0, y: 0, width: self.bounds.size.width, height: self.contentSize.height)
let pdfData = NSMutableData()
UIGraphicsBeginPDFContextToData(pdfData, pdfPageFrame, nil)
UIGraphicsBeginPDFPageWithInfo(pdfPageFrame, nil)
guard let pdfContext = UIGraphicsGetCurrentContext() else { return "" }
self.layer.render(in: pdfContext)
UIGraphicsEndPDFContext()
self.bounds = originalBounds
// Save pdf data
return self.saveTablePdf(data: pdfData)
}
// Save pdf file in document directory
func saveTablePdf(data: NSMutableData) -> String {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
let docDirectoryPath = paths[0]
let pdfPath = docDirectoryPath.appendingPathComponent("myPDF.pdf")
if data.write(to: pdfPath, atomically: true) {
return pdfPath.path
} else {
return ""
}
}
}
然后我以这种方式保存路径
myPdfPath = self.tableView.exportAsPdfFromTable()
我尝试了几种显示pdf的方法:
- UIActivityViewController (with this work but not well)
- WKWebView
- SFSafariViewController (only http / https, path file not work)
- UIDocumentInteractionController (not show preview and not work)
用于保存 pdf 的扩展不能正常工作(不填充打印预览页面)。生成一个 125MB 的 pdf,其标题是我不想要的。
是否有捷径可寻?
1)TableView(在白色背景上生成pdf(例如,即使tableview是红色的)
2)打印生成的pdf。
谢谢