如何制作如图所示的按钮？

终于决定了

shape_button_location.xml

<?xml version="1.0" encoding="utf-8"?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <corners android:radius="9dp" />
    <solid android:color="@android:color/white" />
</shape>

layer_button_location.xml

<?xml version="1.0" encoding="utf-8"?>
 <layer-list
     xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:drawable="@drawable/shape_button_location" />
     <item android:drawable="@drawable/ic_location"
         android:top="10dp"
         android:bottom="10dp"
         android:left="10dp"
         android:right="10dp">
     </item>
 </layer-list>

还有我自己button

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<Button
    android:id="@+id/btnMap"
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:background="@drawable/layer_button_location"
    android:layout_marginStart="15dp"
    android:layout_marginTop="15dp"/>

<fragment
    android:id="@+id/map"
    android:name="com.google.android.gms.maps.SupportMapFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />