TimerLoop-TimeDisplay

TimerLoop-TimeDisplay/src/com/brainyideas/dev/poc/tltd/TimeDisplay.java

package com.brainyideas.dev.poc.tltd;

import android.app.Activity;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.widget.TextView;


public class TimeDisplay extends Activity {
	
	TextView tv;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
    	tv = (TextView) findViewById(R.id.textView1);
    	
    	long bignum;
    	
    	// get the largest possible long value and decrement it every second
    	// it will take approximately 5.849x10^11 years to reach zero at which time a new Android will likely have emerged
    	bignum = Long.MAX_VALUE;
    	// this is same as, 
    	//bignum = (long) Math.pow(2,64) - 1;
    	
        new CountDownTimer(bignum, 1000) {

            public void onTick(long millisUntilFinished) {
            	tv.setText("seconds remaining: " + millisUntilFinished / 1000);
            }

            public void onFinish() {
                tv.setText("done!");
            }
         }.start();
    }
}

TimerLoop-TimeDisplay/res/layout/main.xml

<?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">

	<TextView 
		android:text="@string/startvalue" 
		android:id="@+id/textView1"
		android:layout_width="wrap_content" 
		android:layout_height="wrap_content"/>

</LinearLayout>