问题
The source HTML string (including the symbol) is coming from the strings.xml resource file, and is destined to be displayed in a WebView. I've tested with this in the resources:
<string name="MY_STRING">®</string>
- Using the actual trademark symbol in the resources (®), the projects builds, but when displayed in the WebView it shows as "®" (i.e. an "A" circumflex, followed by the registered trademark symbol) - i.e. two characters are shown, the first incorrect & unwanted.
- I see the same result when using the entity reference,
® - Using
®fails, and the project does not build.
This is the code that pushes the string resource into the WebView:
String html = getString(R.string.MY_STRING);
((WebView)findViewById(R.id.terms_web_view)).loadData(html, "text/html", "UTF-8");
I also tried this, but it did not help: webView.getSettings().setDefaultTextEncodingName("UTF-8");
I pushed the HTML string to Logcat, and it looks fine - it shows the symbol correctly. So if the string is ok, and the WebView is set to use UTF-8, why is the symbol not displaying correctly?
UPDATE I tested on other devices. I can only reproduce this issue on a Galaxy Nexus on Android v4.04. On a Nexus One v2.3.x, Wildfire S on v2.3.x and a Samsung Tab 10.1 on v3.2, it works fine. I've changed the question title to clarify this is an ICS issue.
回答1:
String resources are not designed to hold arbitrary HTML, including arbitrary entity references.
You might be able to get an arbitrary entity reference to work if you pre-escape it:
<string name="MY_STRING">&reg;</string>
IIRC, that should decode to ® after your call to getString().
At the end of the day, you need to get ® to WebView. If you cannot determine a way to do that with a string resource, you will need to store this value someplace else.
回答2:
You are using loadData(html, "text/html", "UTF-8"); This method expect a html string in your variable html. But it is not. Try
String html = "<html><body>My text is ®</body></html>";
for instance.
--updated to have a full html document
And if you store it in a resource file use :
<string name="MY_STRING" formatted="false"><html><body>My text is ®</body></html></string>
回答3:
This is not and Android developer answer but just something simple if you're trying to text somebody and neither Ⓡ nor ™ aren't available as symbols (like on my LG phone Android 7.0). Just copy those symbols from this message thread and send them in a message to yourself or stuff them in a quick memo. Then you have them readily available for future use.
来源：https://stackoverflow.com/questions/10106278/display-registered-trademark-symbol-in-android-v4-0-webview