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Android 获取当前时间，时间戳转日期

Android获取当前时间代码


//需要引用的
import java.sql.Timestamp;
import java.text.SimpleDateFormat;

//详细代码
java.util.Date currentdate = new java.util.Date();//当前时间
//long i = (currentdate.getTime()/1000-timestamp)/(60);
//System.out.println(currentdate.getTime());
//System.out.println(i);
Timestamp now = new Timestamp(System.currentTimeMillis());//获取系统当前时间
System.out.println("now-->"+now);//返回结果精确到毫秒。

时间戳转日期

int timestamp = 1310457552; //将这个时间戳转为日期

return getTime(timestamp);

定义getTime， getDate, IntToLong


    public static String getTime(int timestamp){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String time= null;
        try {
            String str = sdf.format(new Timestamp(IntToLong(timestamp)));
            time = str.substring(11, 16);

            String month = str.substring(5, 7);
            String day = str.substring(8,10 );
            time =getDate(month, day)+ time;
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return time;
    }

    public static String getDate(String month,String day){
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//24小时制
        java.util.Date d = new java.util.Date(); ;
        String str = sdf.format(d);
        String nowmonth = str.substring(5, 7);
        String nowday = str.substring(8,10 );
        String result = null;

        int temp =   Integer.parseInt(nowday)-Integer.parseInt(day);
        switch (temp) {
            case 0:
                result="今天";
                break;
            case 1:
                result = "昨天";
                break;
            case 2:
                result = "前天";
                break;
            default:
                StringBuilder sb = new StringBuilder();
                sb.append(Integer.parseInt(month)+"月");
                sb.append(Integer.parseInt(day)+"日");
                result  = sb.toString();
                break;
        }
        return result;
    }

    //java Timestamp构造函数需传入Long型
    public static long IntToLong(int i){
        long result = (long)i;
        result*=1000;
        return  result;
    }

部分代码摘自网络，仅供参考。

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