我为三星S8制作了自定义键盘。 keyboard.xml文件如下所示：
<?xml version="1.0" encoding="utf-8"?>
<Keyboard n1:keyWidth="13.999998%p" n1:keyHeight="40.0dip" n1:horizontalGap="2.6000023%p" n1:verticalGap="10.0dip"
xmlns:n1="http://schemas.android.com/apk/res/android">
<Row n1:keyHeight="0.100000024px" n1:rowEdgeFlags="top" />
<Row>
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="49" n1:keyEdgeFlags="left" n1:keyLabel="1" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="50" n1:keyLabel="2" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="51" n1:keyLabel="3" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="52" n1:keyLabel="4" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="53" n1:keyLabel="5" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="54" n1:keyLabel="6" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="55" n1:keyLabel="7" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="56" n1:keyLabel="8" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="57" n1:keyLabel="9" />
<Key n1:keyWidth="8.7%p" n1:horizontalGap="1.05%p" n1:codes="48" n1:keyLabel="0" />
</Row>
</Keyboard>
（我省略了其他行，只有第一行包含在代码中）。
当我点击键盘数字时，而不是写＃34; 1＆＃34;，＆＃34; 2＆＃34;等等，我得到ASCII带圆圈的数字，例如＆＃34;❶＆ ＃34;，＆＃34;❷＆＃34;等等。 怎么会发生这种情况？ ASCII码是正确的（48,49等）。
如何解决此问题？