1<?xml version="1.0" encoding="utf-8"?> 2<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android" 3 android:layout_width="match_parent" 4 android:layout_height="wrap_content" 5 android:background="@color/ColorPrimary" 6 android:elevation="4dp"> 7 8</android.support.v7.widget.Toolbar>