have you tried using following in your manifest file
android:windowSoftInputMode="adjustPan"
like this
<activity
android:name="com.example.activity.YourActivity"
android:label="@string/title_activity_subscription_setup"
android:screenOrientation="portrait"
android:windowSoftInputMode="adjustPan" >
</activity>
there are various values like adjustPan, adjustResize etc etc. Try them out to see what works best for your situation.