BooleanButton.java

package com.google.mcommerce.sample.android.chapter08.motionEvent;

// This file is BooleanButton.java
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.Button;

public abstract class BooleanButton extends Button {
	protected boolean myValue() {
		return false;
	}

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

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		String myTag = this.getTag().toString();
		Log.v(myTag, "-----------------------------------");
		Log.v(myTag, MotionEventLogUitl.describeEvent(this, event));
		Log.v(myTag,
				"super onTouchEvent() returns " + super.onTouchEvent(event));
		Log.v(myTag, "and I'm returning " + myValue());
		return (myValue());
	}
}