1.在activity中 添加一个内部类
class MyCount extends CountDownTimer{
public MyCount(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onTick(long millisUntilFinished) {
textView3.setText("距出发时间还有:\n"
+ Utils.formatDuring(millisUntilFinished));
}
@Override
public void onFinish() {
//倒计时完成以后 执行的语句
textView3.setVisibility(View.GONE);
}
}
2.添加工具类Utils
package com.example.image_up;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import android.app.ActivityManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.os.Environment;
import android.preference.PreferenceManager;
public class Utils {
/**
*
* @param 要转换的毫秒数
* @return 该毫秒数转换为 * days * hours * minutes * seconds 后的格式
* @author fy.zhang
*/
public static String formatDuring(long mss) {
long days = mss / (1000 * 60 * 60 * 24);
long hours = (mss % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);
long minutes = (mss % (1000 * 60 * 60)) / (1000 * 60);
long seconds = (mss % (1000 * 60)) / 1000;
return days + " 天 " + hours + " 时 " + minutes + " 分 "
+ seconds + " 秒 ";
}
/**
*
* @param begin 时间段的开始
* @param end 时间段的结束
* @return 输入的两个Date类型数据之间的时间间格用* days * hours * minutes * seconds的格式展示
* @author fy.zhang
*/
public static String formatDuring(Date begin, Date end) {
return formatDuring(end.getTime() - begin.getTime());
}
}
3.使用
try {
String aa="2015-09-02 19:31:41";
SimpleDateFormat formatDate = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
Long time;
time = formatDate.parse(
aa).getTime()
- new Date().getTime();
if (time > 60000) {
mc = new MyCount(time, 1000);
mc.start();
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}