ドラッグ-アンド-ドロップでOK
background.png
<span class="tag"><LinearLayout</span> <span class="atn">xmlns:android</span><span class="pun">=</span><span class="atv">"http://schemas.android.com/apk/res/android"</span> <span class="atn">android:orientation</span><span class="pun">=</span><span class="atv">"vertical"</span> <span class="atn">android:layout_width</span><span class="pun">=</span><span class="atv">"fill_parent"</span> <span class="atn">android:layout_height</span><span class="pun">=</span><span class="atv">"fill_parent"</span> <span class="atn">android:background</span><span class="pun">=</span><span class="atv">"@drawable/background"</span> <span class="atn">android:gravity</span><span class="pun">=</span><span class="atv">"center_vertical"</span> <span class="tag">></span> <span class="tag"><TextView</span> <span class="atn">android:layout_width</span><span class="pun">=</span><span class="atv">"fill_parent"</span> <span class="atn">android:layout_height</span><span class="pun">=</span><span class="atv">"wrap_content"</span> <span class="atn">android:text</span><span class="pun">=</span><span class="atv">"@string/hello"</span> <span class="tag">/></span> <span class="tag"></LinearLayout></span></pre> <pre>こんな感じで2行追加しました
画像を指定
android:background="@drawable/background"センタリング
android:gravity="center_vertical"表示がこちら