http://*.com/questions/31204320/how-can-i-change-the-navigationviews-item-text-size
自定义style
<style name="NavigationDrawerStyle">
<item name="android:textSize">16sp</item>
<item name="android:listPreferredItemHeight">30dp</item>
<item name="android:listPreferredItemHeightLarge">30dp</item>
<item name="android:listPreferredItemHeightSmall">30dp</item>
</style>