dimens.xml

<resources>

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

</resources>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string name="hello">Hello World, Sudoku!</string>
    <string name="app_name">Sudoku</string>
    <string name="main_title">Android Sudoku</string>
    <string name="continue_label">Continue</string>
    <string name="new_game_label">New Game</string>
    <string name="about_label">About</string>
    <string name="exit_label">Exit</string>
    <string name="about_title">About Android Sudoku</string>
    <string name="about_text">\
Sudoku is a logic-based number placement puzzle.
Starting with a partially completed 9x9 grid, the
objective is to fill the grid so that each
row, each column, and each of the 3x3 boxes
(also called <i>blocks</i>) contains the digits
1 to 9 exactly once.</string>
    <string name="settings_label">Settings…</string>
    <string name="settings_title">Sudoku settings</string>
    <string name="settings_shortcut">s</string>
    <string name="music_title">Music</string>
    <string name="music_summary">Play background music</string>
    <string name="hints_title">Hints</string>
    <string name="hints_summary">Show hints during play</string>
    <string name="new_game_title">Difficulty</string>
    <string name="easy_label">Easy</string>
    <string name="medium_label">Medium</string>
    <string name="hard_label">Hard</string>
    <string name="extreme_label">Extreme</string>
    <string name="game_title">Game</string>
    <string name="high_score_label">High Score</string>
    <string name="no_moves_label">No moves</string>
    <string name="keypad_title">Keypad</string>
    <string name="num_0">0</string>
    <string name="num_1">1</string>
    <string name="num_2">2</string>
    <string name="num_3">3</string>
    <string name="num_4">4</string>
    <string name="num_5">5</string>
    <string name="num_6">6</string>
    <string name="num_7">7</string>
    <string name="num_8">8</string>
    <string name="num_9">9</string>

</resources>