Android：Webview加载URL失败？
我能够运行将文件和文件夹从一个目录复制到另一个目录的代码，我有 ff.input:
Source: new File(Environment.getExternalStorageDirectory(), "E_BU/EngagiaDroid") ，它给出输出 /我的设备上的 mnt/sdcard/E_BU/EngagiaDroid，并且， 目的地： new File(Environment.getExternalStorageDirectory(), "EngagiaDroid") 在我的设备上提供输出 /mnt/sdcard/EngagiaDroid 。
但是，当我使用 webview 代码时使用此链接查看我的html：Environment.getExternalStorageDirectory() + "/EngagiaDroid/videos.html" 给出输出 /mnt/sdcard/EngagiaDroid/videos.html，webview 无法加载该 url。但是当我将网址更改为其他网址时 http://codeofaninja.blogspot.com /2011/05/how-to-view-webpage-inside-your-android.html，它能够加载，这意味着 webview 代码可以工作。
我确信文件已被复制。
I am able to run a code that copies files and folders from one directory to another, I have the ff.input:
Source: new File(Environment.getExternalStorageDirectory(), "E_BU/EngagiaDroid") which gives the output /mnt/sdcard/E_BU/EngagiaDroid on my device, AND,
Destination: new File(Environment.getExternalStorageDirectory(), "EngagiaDroid") which gives the output /mnt/sdcard/EngagiaDroid on my device.
However, when I used the webview code in this link to view my html using: Environment.getExternalStorageDirectory() + "/EngagiaDroid/videos.html"
which gives the output /mnt/sdcard/EngagiaDroid/videos.html, webview was not able to load that url. But when I change the url to other url for example
http://codeofaninja.blogspot.com/2011/05/how-to-view-webpage-inside-your-android.html, it was able to load, meaning the webview code works.
I'm sure that the files were copied.
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我假设您具有 READ_EXTERNAL_STORAGE 权限。您是否在 WebView 上设置了
webView.getSettings().setAllowFileAccess(true);？除此之外，最有可能的是 URL 的问题。一方面，它应该以
file:///开头。也许是这样的：我经常看到的例子出现在
file:///sdcard/...I assume you have the READ_EXTERNAL_STORAGE permission. Have you set
webView.getSettings().setAllowFileAccess(true);on the WebView?Other than that, the most likely thing would be a problem with the URL. It should start with
file:///, for one thing. Maybe something like:Examples I've seen often come out to
file:///sdcard/...用这个l
ine 及其工作
Use this l
ine and its work