Custom Android EditText not working

I am trying to implement a custom onDraw() method in my EditText.
onDraw is getting called - I can see the log messages, but it is not drawing anything.

Can anyone please tell me what I am doing wrong?

Here is an excerpt from my layout:

    <view xmlns:android="http://schemas.android.com/apk/res/android"
           class ="my.package.NotePadEditView"
             android:inputType="textMultiLine"
             android:id="@+id/edit_text"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:background="@android:color/transparent"
             android:singleLine="false"
             >
         <requestFocus/>
     </view>
 </ScrollView>
 

Here is the class (just with some test code for now):

public class NotePadEditView extends EditText {
 Paint paint = new Paint();
 public NotePadEditView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    paint.setStyle(Paint.Style.STROKE);
    paint.setStrokeWidth(3);
    paint.setColor(0xFF0000);
  }
  @Override
  protected void onDraw(Canvas canvas) {
    Log.d("NotePadEditView", "Calling onDraw()"); // These log messages are displaying
    canvas.drawLine(0, 0, 50, 50, paint); // just some random stuff so we know when we are done. (Note: these are not displaying - what's up with that???)
    canvas.drawText("Hello, World", 30, 30, paint);
    super.onDraw(canvas);
   }
 
 // more constructors, etc
 

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