在Android中将Res/font中的自定义字体与WebView一起使用 [英] Use custom font from res/font with WebView in Android
问题描述
我想更改加载到WebView中的html字符串的字体，类似于此问题中所述:
I want to change font face of html string loaded into WebView similarly as mentioned in this question:
How to change font face of Webview in Android?
区别在于，我没有使用旧的方法将字体文件存储在Assets文件夹中，而是将它们存储在res/font中，如"XML字体" android字体支持文档中所述:
The difference is that I am not using old approach where you store you font files in assets folder, but I store them in res/font as described in "Fonts in XML" android font support documentation:
https://developer. android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html
现在，我显然不能使用:
Now, I obviously can't use:
file:///android_asset/fonts/my_font.otf
我尝试过:
file:///android_res/font/my_font.otf
以及在res/font文件夹中描述我的字体路径的许多其他方式，但是它们都不起作用.
and many other ways of describing path to my font inside of res/font folder, but none of them work.
如果我的字体存储在res/font文件夹中，如何为加载html字符串的WebView使用自定义字体系列?
How to use custom font family for a WebView that loads html string if my font is stored in res/font folder ?
//
我当前无法执行的实现是:
My current implementation that is not working is:
@BindingAdapter("loadData")
public static void loadData(WebView webView, String htmlData) {
webView.loadDataWithBaseURL(null, htmlData, "text/html", "utf-8", null);
}
@BindingAdapter({"loadData", "fontFamily"})
public static void loadData(WebView webView, String htmlData, @FontRes int fontFamilyId) {
TypedValue value = new TypedValue();
ApplicationActivity.getSharedApplication().getResources().getValue(fontFamilyId, value, true);
String fontPath = value.string.toString();
File fontFile = new File(fontPath);
String prefix = "<html>\n"
+"\t<head>\n"
+"\t\t<style type=\"text/css\">\n"
+"\t\t\t@font-face {\n"
+"\t\t\t\tfont-family: 'CustomFont';\n"
+"\t\t\t\tsrc: url(\"file:///android_res/font/"+fontFile.getName()+"\")\n"
+"\t\t\t}\n"
+"\t\t\tbody {\n"
+"\t\t\t\tfont-family: 'CustomFont';\n"
+"\t\t\t}\n"
+"\t\t</style>\n"
+"\t</head>\n"
+"\t<body>\n";
String postfix = "\t</body>\n</html>";
loadData(webView, prefix + htmlData + postfix);
}
推荐答案
只需尝试一下，它的工作原理与从资源中加载字体类似，您只需要更改基本URL即可指向资源.
Just tried and this works similarly to loading fonts from assets, you just need to change the base url to point to resources instead.
示例HTML
<html>
<head>
<style>
@font-face {
font-family: 'CustomFont';
src: url('font/CustomFont.ttf');
}
#font {
font-family: 'CustomFont';
}
</style>
</head>
<body>
<p>No Font</p>
<br />
<p id="font">Font</p>
</body>
使用file://android_res/作为基本网址(第一个参数)，使用Webview#loadDataWithBaseURL(String, String, String, String, String)将此HTML加载到Web视图中.
load this HTML into the webview using Webview#loadDataWithBaseURL(String, String, String, String, String), using file://android_res/ as the base url (first param)
示例:
webview.loadDataWithBaseURL("file:///android_res/", html, "text/html", "utf-8", null)
如果在发行版本上使用proguard，则需要添加其他规则，以防止在ProGuard过程中重命名R类，否则WebView将无法找到字体资源.可以在此帖子中找到详细信息
If you're using proguard on your release builds you'll need to add extra rules to prevent the R class being renamed during the ProGuard process otherwise the WebView won't be able to find the font resource. Details can be found at this post
这篇关于在Android中将Res/font中的自定义字体与WebView一起使用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
