Android Keyboard resolution

I'm working on an android soft keyboard. It seems I keep making my canva开发者_开发知识库s about 533x320 resolution even though my phone (galaxy) is 800x480.

I've even tried making onMeasure in my view call setMeasure with 800x480 with no luck.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"     

    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="true"
        android:smallScreens="true" />

</manifest>

My reference is this link.