我有一个应用程序，我在一个网页上按下按钮，该网页在网络视图中呈现。
现在点击按钮，下载一个pdf文件，然后需要在同一个网络视图中打开该文件。
将下载侦听器附加到web视图，并按如下方式更改url。。
“https://docs.google.com/gview?embedded=true&；网址=https://www.实例.com/xxxxxyyyyyxz.pdf“
实例
这是一个用来打开pdf而不下载的链接。。。
我希望它能解决你的问题。。
我发现google查看器似乎可以在android浏览器中查看在线PDF文件。您可以建立一个指向PDF的链接，以便在查看器中显示。不过，我还没有尝试在WebView中这样做。
更新
The link is dead, there is an explanation of how to get the functionality to still work at this link.
In case this link also dies, here is the relevant section:
虽然该页面在重定向到谷歌文档/驱动器时不再可用，但您仍然可以使用谷歌文档查看器。将此URL粘贴到新选项卡中：
https://docs.google.com/viewer?url=
然后粘贴要在线查看的文档的地址。下面是一个例子：
https://docs.google.com/viewer?url=http://research.google.com/archive/bigtable-osdi06.pdf
我认为除了Chrome之外，任何浏览器都不支持在没有插件或第三方工具的情况下渲染PDF。让用户使用自己的应用程序打开PDF可能更容易。
I used the IText PDF library mentioned in this thread Android : Is there any free PDF library for Android for a sample project. You could try getting using this API to get the PDF page as an image. I am not familiar with every aspect of Itext so it might have better way to do this.
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