Android倒计时案例

package com.example.timerrefurbish;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends Activity {
	private TextView timeShow;	
	private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
	private ScheduledFuture<?> tickFuture,tickFuture2;
	private Thread thread,threadMs;
	private TextView msTime;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		timeShow = (TextView) findViewById(R.id.time_textview);
		msTime = (TextView) findViewById(R.id.time_textview_ms);
		thread = new Thread(new Runnable() {		
			@Override
			public void run() {
				runOnUiThread(new Runnable() {					
					@Override
					public void run() {
						SimpleDateFormat dataformat = new SimpleDateFormat("yyyy-MM-dd  kk:mm:ss:aa");
						String format = dataformat.format(new Date());						
						timeShow.setText(format);
					}
				});
			}
		});
		
	threadMs = new Thread(new Runnable() {		
			@Override
			public void run() {
				runOnUiThread(new Runnable() {					
					@Override
					public void run() {	
						msTime.setText("姣"+System.currentTimeMillis());
					}
				});
			}
		});

	}
	@Override
	protected void onResume() {
		super.onResume();
		this.tickFuture = this.scheduler.scheduleAtFixedRate(thread, 1000L, 1000L, TimeUnit.MILLISECONDS);
		this.tickFuture2 = this.scheduler.scheduleAtFixedRate(threadMs, 1000L, 1L, TimeUnit.MILLISECONDS);
	}
	
	@Override
	protected void onPause() {
		super.onPause();
		this.tickFuture.cancel(true);
		this.tickFuture2.cancel(true);
		this.tickFuture2=null;
		this.tickFuture= null;
	}
	
	
}