如何在Android Keyboard XML中使用Unicode？

Question

According to Keyboard.Key android:codes , android:keyLabel , and android:keyOutputText , I can use Unicode in these fields.

May be a string value, using '\\;' to escape characters such as '\\n' or '\\uxxxx' for a unicode character;

In my code, I have tried

<Key android:codes="\\u2460;" android:keyLabel="\\u2460;"/>
<Key android:codes="\\u2460" android:keyLabel="\\u2460"/> <!-- no semi -->

Which didn't work. So then I tried

<Key android:codes="\u2460" android:keyLabel="\u2460"/> <!-- no double slash -->

This worked but only for the keyLabel . Neither codes nor keyOutputText cause anything to be outputted.

I even tried moving it over to strings.xml

<string name="one">\u2460</string>

Which again only works for the keyLabel .

How do I get this to output what I want?

Note : For those curious, 2460 is an encircled one.

Answer 1

Documentation uses single quotes '\\\①;' you are using double quotes "\\\①;" .

Disclaimer: I have no idea if that will help as I have not tried but I thought I should mention it