XML and Java code. Sets the Layout of the activity.

activity_clipboard.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FFFFFF"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/clipboardLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="@drawable/colorbballcourt"
        android:orientation="vertical"
        tools:context=".ClipboardActivity" >

        <android.gesture.GestureOverlayView
            android:id="@+id/gestures"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fadeEnabled="false"
            android:fadeOffset="5000000000"
            android:gestureColor="#000000"
            android:gestureStrokeType="multiple"
            android:gestureStrokeWidth="3"
            android:uncertainGestureColor="#000000" >
        </android.gesture.GestureOverlayView>
    </RelativeLayout>

    <LinearLayout
        android:id="@+id/colorButtonLayout"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_weight="1"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/blueColor"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:onClick="setBlueInk"
            android:text="@string/blue" />

        <Button
            android:id="@+id/redColor"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:onClick="setRedInk"
            android:text="@string/red" />

        <Button
            android:id="@+id/greenColor"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:onClick="setGreenInk"
            android:text="@string/green" />

        <Button
            android:id="@+id/eraser"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:onClick="eraseInk"
            android:text="@string/eraser" />
    </LinearLayout>

</LinearLayout>

ClipboardActivity.java

package com.jeremy.basketballclipboard;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.gesture.GestureOverlayView;
import android.graphics.Color;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.RelativeLayout;
import android.support.v4.app.NavUtils;

public class ClipboardActivity extends Activity implements OnTouchListener {
  
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_clipboard);
		// Show the Up button in the action bar.
		setupActionBar();		
	}
	
	/**
	 * Set up the {@link android.app.ActionBar}.
	 */
	private void setupActionBar() {

		getActionBar().setDisplayHomeAsUpEnabled(true);

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.clipboard, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case android.R.id.home:
			// This ID represents the Home or Up button. In the case of this
			// activity, the Up button is shown. Use NavUtils to allow users
			// to navigate up one level in the application structure. For
			// more details, see the Navigation pattern on Android Design:
			//
			// http://developer.android.com/design/patterns/navigation.html#up-vs-back
			//
			NavUtils.navigateUpFromSameTask(this);
			return true;
		case R.id.action_new_clipboard:
			newClipboard();
			return true;
		default:
			return super.onOptionsItemSelected(item);
		}
	}

	private void newClipboard() {
		Intent intent = getIntent();
		finish();
		startActivity(intent);
//		GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
//		gestures.clear(true);
	}

	@Override
	public boolean onTouch(View arg0, MotionEvent arg1) {
		// TODO Auto-generated method stub
		return false;
	}
	
	public void setBlueInk(View view){
		GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
		gestures.setGestureColor(Color.BLUE);
	}
	
	public void setRedInk(View view){
		GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
		gestures.setGestureColor(Color.RED);
	}
	
	public void setGreenInk(View view){
		GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
		gestures.setGestureColor(Color.GREEN);
	}
	
	public void eraseInk(View view){
		GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
		gestures.setGestureColor(Color.TRANSPARENT);
	}

}