Toolbar Shadow, Cubic Effect

1. 얇게

 

<View
            android:layout_alignParentBottom="true"
            android:layout_width="fill_parent"
            android:layout_height="2dp"
            android:background="@drawable/drop_shadow" >

<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient
        android:startColor="@android:color/transparent"
        android:endColor="#44000000"
        android:angle="90"/>
</shape>

 

 

 

2. 두껍게

 

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:gravity="bottom">
        <shape>
            <size android:height="5dp" />
            <solid android:color="#f5f5f5" />
            <gradient
                android:angle="90"
                android:endColor="#23000000"
                android:startColor="@android:color/transparent" />
        </shape>
    </item>
</layer-list>