Android动态改变TextView字体颜色

font_style_colors.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="true" android:color="#3399FF" />
<item android:state_focused="true" android:color="#3399FF" />
<item android:state_pressed="true" android:color="#3399FF" />
<item android:color="#FFFFFF"></item>
</selector>

<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="@string/text"
android:textColor="@color/font_style_colors"
android:focusable="true"
/>