a thing that doesn't render the top N pixels of a listview.

gistfile1.txt

package com.derp.android

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.util.AttributeSet;
import android.widget.ListView;

/**
 * Created by fdoyle on 9/4/14.
 */
public class TopClippingListView extends ListView {
    Paint clearPaint = new Paint();
    int clipHeight = 0;

    public TopClippingListView(Context context) {
        super(context);
        init();
    }

    public TopClippingListView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public TopClippingListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    public void setClipHeight(int newHeight) {
        clipHeight = newHeight;
    }

    public void init() {
        setLayerType(LAYER_TYPE_SOFTWARE, new Paint());
        clearPaint.setAlpha(0xFF);
        clearPaint.setXfermode(new PorterDuffXfermode(
                PorterDuff.Mode.CLEAR));
    }

    @Override
    public void draw(Canvas canvas) {
        super.draw(canvas);
        canvas.drawRect(0, 0, getWidth(), clipHeight, clearPaint);
    }
}