Implementation method of parsing custom fonts in Android

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:Andro
    Android:layout_width="fill_parent"
    Android:layout_height="fill_parent" >

    <TableRow>

        <TextView
            Android:layout_marginRight="4px"
            Android:text="sans:"
            Android:textSize="20sp" >
        </TextView>
<!-- Use the default sans font -->

        <TextView
            Android:
            Android:text="Hello,World"
            Android:textSize="20sp"
            Android:typeface="sans" >
        </TextView>
    </TableRow>

    <TableRow>

        <TextView
            Android:layout_marginRight="4px"
            Android:text="serif:"
            Android:textSize="20sp" >
        </TextView>
<!-- Use the default serifs font -->

        <TextView
            Android:
            Android:text="Hello,World"
            Android:textSize="20sp"
            Android:typeface="serif" >
        </TextView>
    </TableRow>

    <TableRow>

        <TextView
            Android:layout_marginRight="4px"
            Android:text="monospace:"
            Android:textSize="20sp" >
        </TextView>
<!-- Use the default monospace font -->

        <TextView
            Android:
            Android:text="Hello,World"
            Android:textSize="20sp"
            Android:typeface="monospace" >
        </TextView>
    </TableRow>
<!-- There is no font set here, we will set it in Java code -->

    <TableRow>

        <TextView
            Android:layout_marginRight="4px"
            Android:text="custom:"
            Android:textSize="20sp" >
        </TextView>

        <TextView
            Android:
            Android:text="Hello,World"
            Android:textSize="20sp" >
        </TextView>
    </TableRow>

</TableLayout>