TextView中style的应用

<TextView android:layout_width="fill_parent"             android:layout_height="wrap_content"           android:text="Style"           style="@style/style1" />

<resources><style name="style1"><item name="android:textSize">20sp</item><item name="android:textColor">#FFFF00</item></style><style name="style1.style2"><item name="android:gravity">center_horizontal</item></style><style name="style1.style2.style3"><item name="android:gravity">right</item><item name="android:textColor">#FF0000</item></style></resources>