What is the method for setting the shadow border on Android?

In Android, you can use the elevation attribute to create a shadow effect. The elevation attribute is a property in the View class used to set the Z-axis height of a View and produce a shadow effect. For example:

<View
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:elevation="8dp"
    android:background="@android:color/white"/>

In the example above, the elevation property is set to 8dp, indicating the View’s Z-axis height is 8dp, creating a shadow effect. The depth of the shadow can be adjusted by changing the value of the elevation as needed.

Additionally, if you want to set the border of a View, you can use the Stroke and StrokeColor properties to achieve this. For example:

<View
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/white"
    android:strokeWidth="2dp"
    android:strokeColor="@android:color/black"/>

In the above example, the strokeWidth property is set to 2dp, indicating that the border width is 2dp, and the strokeColor property is set to @android:color/black, indicating that the border color is black. The border style can be adjusted by changing the values of strokeWidth and strokeColor as needed.