Android之时间戳的简单使用

package com.example.test_time;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import android.app.Activity;import android.os.Bundle;import android.util.Log;public class TimeActivity extends Activity{private long systemTimes;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_main);getSystemTime();//获取系统时间戳String string =transationSysTime("yyyy-MM-dd HH:mm:ss",1414994617);//已知时间戳（服务器）转换为标准格式Log.e("TAG", "===已知时间戳"+string);}public void getSystemTime(){//获取系统时间戳的几种方式//systemTimes = System.currentTimeMillis();//systemTimes = new Date().getTime();systemTimes = Calendar.getInstance().getTimeInMillis();Log.e("TAG","===系统时间戳="+systemTimes);//转换为标准时间格式SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒");String time = dateFormat.format(systemTimes);Log.e("TAG","===系统时间="+time);}public String transationSysTime(String dateFormate,long timeType){if(timeType==0)return null;String result = "";timeType*=1000;SimpleDateFormat format = new SimpleDateFormat(dateFormate);result = format.format(new Date(timeType));transationTimetoInt(format,result);//将时间转换为Int类型，方便计算return result;}public void transationTimetoInt(SimpleDateFormat format,String resultStr){try {Date date = format.parse(resultStr);Calendar calendar = Calendar.getInstance();calendar.setTime(date);int year = calendar.get(Calendar.YEAR);int month = calendar.get(Calendar.MONTH);//month从0开始int day = calendar.get(Calendar.DAY_OF_MONTH);int hour = calendar.get(Calendar.HOUR_OF_DAY);int minute = calendar.get(Calendar.MINUTE);int seconds = calendar.get(Calendar.SECOND);Log.e("TAG","===转换为Int="+year+"年"+month+"月"+day+"日"+hour+"时"+minute+"分"+seconds+"秒");} catch (ParseException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
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