问题
Using android studio 2.1.2 I added navigation activity from standard library. It inflates menu with some default items:
How can I remove those borders from menu items?
Device: Asus padfone 2 Android 4.1.1
Compilation: compileSdkVersion 23 buildToolsVersion "23.0.2" minSdkVersion 16 targetSdkVersion 23 com.android.support:appcompat-v7:23.4.0
来源：https://stackoverflow.com/questions/38042866/android-how-to-remove-borders-around-navview-menu-items