Use dimension value instead of fixed constant in code.

import android.content.Context;

import android.content.SharedPreferences;

import android.content.pm.PackageManager;

import android.content.res.Resources;

import android.os.Build;

import android.os.Handler;

import android.os.Message;

        // Detect tablet device for fixed viewport mode.

        final DisplayMetrics metrics = context.getResources().getDisplayMetrics();

        final int landscapeWidth = Math.max(metrics.widthPixels, metrics.heightPixels);

        mUseFixedViewport = (metrics.density == 1.0f && landscapeWidth >= 800);

        final int minTabletWidth = context.getResources().getDimensionPixelSize(

            com.android.internal.R.dimen.min_xlarge_screen_width);

        mUseFixedViewport = (metrics.density == 1.0f && landscapeWidth >= minTabletWidth);

        mMaxFixedViewportWidth = (int) (landscapeWidth * 1.25);

        if (sLockForLocaleSettings == null) {

    <dimen name="fastscroll_thumb_width">64dp</dimen>

    <!-- Height of the fastscroll thumb -->

    <dimen name="fastscroll_thumb_height">52dp</dimen>

    <!-- Min width for a tablet device -->

    <dimen name="min_xlarge_screen_width">800dp</dimen>

    <!-- Default height of a key in the password keyboard for alpha -->

    <dimen name="password_keyboard_key_height_alpha">56dip</dimen>

    <!-- Default height of a key in the password keyboard for numeric -->