android xml Textview text attribute cannot take '<' as value

Question

I cannot type

   <Button
        android:id="@+id/del"
        android:text="<"
        android:textColor="#FFFFFF"/>

it gives an error

Error:(317) Error parsing XML: not well-formed (invalid token)

Answer 1

Do it like this in the XML:

<Button
    android:id="@+id/del"
    android:text="&lt;"
    android:textColor="#FFFFFF"/>

Programmatically:

button.setText("<");