SafeKeyboard/app/src/main/res/values/keyboard_dimens.xml

<resources>
    <!-- Default screen margins, per the Android Design guidelines. -->
    <dimen name="keyboard_activity_horizontal_margin">16dp</dimen>
    <dimen name="keyboard_activity_vertical_margin">16dp</dimen>

    <!--键盘-->
    <dimen name="keyboard_key_height">45dp</dimen>
    <dimen name="keyboard_horizontalGap">10dp</dimen>
    <dimen name="keyboard_verticalGap">10dp</dimen>
    <dimen name="keyboard_key_height_double">120dp</dimen>
</resources>