custom keyboard keys looks blurry

Question

I customized the soft keyboard. But keyboard keys(1,2,3,4,5,6,7,8,9,0,. and OK) is looking blurry.Delete key is fine but other key is looking blurry.

Here is my keyboard.

Here is my custom keyboard xml file

<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
android:horizontalGap="0px"
android:keyHeight="10%p"
android:keyWidth="24%p"
android:verticalGap="0px" >

<Row>
    <Key
        android:codes="49"
        android:keyEdgeFlags="left"
        android:keyLabel="1" />
    <Key
        android:codes="50"
        android:keyLabel="2" />
    <Key
        android:codes="51"
        android:keyLabel="3" />
    <Key
        android:codes="-3"
        android:keyEdgeFlags="right"
        android:keyLabel="OK"
        android:keyWidth="28%p" />
</Row>
<Row>
    <Key
        android:codes="52"
        android:keyEdgeFlags="left"
        android:keyLabel="4" />
    <Key
        android:codes="53"
        android:keyLabel="5" />
    <Key
        android:codes="54"
        android:keyLabel="6" />
    <Key
        android:codes="-5"
        android:isRepeatable="true"
        android:keyEdgeFlags="right"
        android:keyIcon="@drawable/sym_keyboard_delete"
        android:keyWidth="28%p" />
</Row>
<Row>
    <Key
        android:codes="55"
        android:keyEdgeFlags="left"
        android:keyLabel="7" />
    <Key
        android:codes="56"
        android:keyLabel="8" />
    <Key
        android:codes="57"
        android:keyLabel="9" />
    <Key
        android:codes="48"
        android:keyLabel="0"
        android:keyWidth="14%p" />
    <Key
        android:codes="46"
        android:keyEdgeFlags="right"
        android:keyLabel="."
        android:keyWidth="14%p" />
</Row>

Answer 1

Though it is very late answer, it will help others.

use either android:shadowRadius or android:shadowColor attribute in your KeyboardView tag.

ex:

<android.inputmethodservice.KeyboardView
    android:id="@+id/keyboardview"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:shadowColor="@android:color/transparent"
    android:focusableInTouchMode="true" 
    android:visibility="gone" />

or

<android.inputmethodservice.KeyboardView
        android:id="@+id/keyboardview"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:shadowRadius="0.0"
        android:focusableInTouchMode="true" 
        android:visibility="gone" />