样式化的定型对象
类似于CSS的方法，例如
main.xml
<TextView
style="@style/StyleText1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal"
android:text="@string/str_text1"
/>
<TextView
style="@style/StyleText2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal"
android:text="@string/str_text2"
/>
res/values/style.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="StyleText1">
<item name="android:textSize">18sp</item>
<item name="android:textColor">#EC9237</item>
</style>
<style name="StyleText2">
<item name="android:textSize">14sp</item>
<item name="android:textColor">#FF7F7C</item>
<item name="android:fromAlpha">0.0</item>
<item name="android:toAlpha">0.0</item>
</style>
</resources>
