Android使用CountDownTimer倒计时

1、布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />
</LinearLayout>

2、调用

package com.best.daojishi;

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

public class MainActivity extends Activity {
    CountdownUtil c;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TextView textView = (TextView) findViewById(R.id.textView1);

        c = new CountdownUtil(60000000, textView);
        c.countdown();
    }
    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        c.stopThread();
    }
}

3、倒计时

package com.best.daojishi;

import java.text.SimpleDateFormat;
import java.util.TimeZone;
import android.os.CountDownTimer;
import android.widget.TextView;
/**
 * 倒计时
 * */
public class CountdownUtil {
    private long time;
    TextView counetdownView;
    CountdownThread thread;
    SimpleDateFormat formatter;
    String hms;
    /**
     * @time:时间差(指定的一段时间长),时间戳
     * @counetdownView：TextView显示倒计时
     * */
    public CountdownUtil(long time, TextView counetdownView) {
        this.time = time;
        this.counetdownView = counetdownView;
    }
    /**
     * 倒计时
     * */
    public void countdown(){
        formatter = new SimpleDateFormat("HH:mm:ss");// 初始化Formatter的转换格式。
        formatter.setTimeZone(TimeZone.getTimeZone("GMT +8:00"));//设置时区(北京),如果你不设置这个,你会发现你的时间总会多出来8个小时

        thread = new CountdownThread(time, 1000);// 构造CountDownTimer对象
        thread.start();
    }
    class CountdownThread extends CountDownTimer {
        public CountdownThread(long millisInFuture, long countDownInterval) {
            super(millisInFuture, countDownInterval);
            // TODO Auto-generated constructor stub
        }
        @Override
        public void onTick(long millisUntilFinished) {
            hms = formatter.format(millisUntilFinished);//转化成  "00:00:00"的格式
            counetdownView.setText(hms);
        }

        @Override
        public void onFinish() {
            // TODO Auto-generated method stub
            //倒计时结束时触发
            counetdownView.setText("00:00:00");
        }
    }
    /**
     * 终止线程
     * */
    public void stopThread(){
        thread.cancel();
    }
}