Access-Control-Allow-Origin不允许使用Origin null（从android获取XML）

Question

I've researched about this problem.
Everywhere people get this error because of reading local file from localhost. Also almost everywhere people need a json.

In my case i want to get this xml file from this site from android (WebView). So can anybody explain what's wrong? What should I do to get it?

Here's my code:

$.get('http://www.revotech.am/smarthome/app/xml/config.xml', function(xmlData)
{
    ...
}

Answer 1

I assue you are using Android version JELLY_BEAN or above and the javascript is running in the context of a file schema - If YES then do the following.

webView.getSettings().setAllowFileAccessFromFileURLs(true);

From the Android documentation:

Sets whether JavaScript running in the context of a file scheme URL should be allowed to access content from any origin. This includes access to content from other file scheme URLs. See setAllowFileAccessFromFileURLs(boolean). To enable the most restrictive, and therefore secure policy, this setting should be disabled.

The default value is true for API level ICE_CREAM_SANDWICH_MR1 and below, and false for API level JELLY_BEAN and above.