从UIWebView捕获打印请求 [英] Capture print requests from a UIWebView

问题描述

我有一个应用程序，可以包装网站。它允许我们将第三方Web应用程序用于我们业务中的某些服务。它将要做的一件事是打印标签。在移动safari中，如果我进行设置并按print，则该请求将在safari中处理，并且使用空中打印我可以毫无问题地进行打印。

I have an app that is a wrapper for a website. It allows us to use a third party web app for some services in our business. One of the things it will do is print labels. In mobile safari if I do the setup and press print, the request is processed in safari and I can print without any issue using air print.

在我的自定义应用程序中，uiwebview发出相同的请求，但是没有任何内容发送到打印机。我添加了一个弹出框，可以手动提交打印作业，但无法捕获来自Web视图的任何打印请求。

Inside of my custom app the uiwebview makes the same request however nothing is sent to the printer. I have added a popover that I can manually submit a print job, but I can't manage to capture any print requests that come from the webview.

推荐答案

我能够与一位Apple工程师联系，该工程师确认无法从 UIWebView接收 window.print 请求。就我的目的而言，我只是使用javascript将 window.print 函数更改为一个命令，该命令将告诉我发出了打印请求，然后可以打印出部分内容。我需要的网络视图。

I was able to get in touch with an Apple engineer who confirmed it is impossible to receive the window.print request from UIWebView. For my purposes, I just use javascript to change the window.print function to a command that will tell me the print request was made, and then I can print the part of the webview that I needed.

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