Android: Drawable with rounded corners / rounded corners only top

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/white" />
    <stroke android:width="1dp" android:color="@color/light_gray" />
    <padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
    <corners android:radius="6dp" />
</shape>

 top corners:
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/white" />
    <stroke android:width="1dp" android:color="@color/light_gray" />
    <padding android:left="10dp" android:top="10dp" android:right="10dp" android:bottom="10dp" />
   <corners android:topLeftRadius="6dp" android:topRightRadius="6dp" android:bottomLeftRadius="0       .1dp" android:bottomRightRadius="0.1dp"/>

</shape>