Custom view in xml layout

I've created my own view by creating a subclass of the SurfaceView class.

However I can't figure out how to add it from the xml layout file. My current main.xml looks like this:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >

<View
    class="com.chainparticles.ChainView"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent" 
    />


</LinearLayout>

What have I missed?

Edit

More info

My view looks like this

package com.chainparticles;
public class ChainView extends SurfaceView implements SurfaceHolder.Callback {
    public ChainView(Context context) {
        super(context);
        getHolder().addCallback(this);
    }
// Other stuff
}

And it works fine like this:

ChainView cview = new ChainView(this);
setContentView(cview);

But nothing happens when trying to use it from the xml.

Custom view in xml layout

2 Answers