Android-动态显示相聚时间（具体到秒）

目标效果：

主要功能代码：

@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);        setSupportActionBar(toolbar);        //初始化控件        info();        //立即调用该方法        handler.post(runnable);    }    //立即调用方法        Handler handler = new Handler();        Runnable runnable=new Runnable() {            @Override            public void run() {                handler.postDelayed(runnable,1000);                //计算相恋时间                culLoveDate();            }        };    //初始化控件    private void info() {        tvLoveDays= (TextView) findViewById(R.id.tvLoveDays);        tvLoveHoursMinutesSeconds= (TextView) findViewById(R.id.tvLoveHoursMinutesSeconds);    }    //计算相恋时间    private void culLoveDate() {        SimpleDateFormat dfs=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        long between = 0;        try {            Date begin = dfs.parse("2015-04-11 09:09:09");  //设置开始计算时间            Date end = new Date(System.currentTimeMillis());//获取当前时间            between = (end.getTime() - begin.getTime());// 得到两者的秒数        } catch (Exception ex) {            ex.printStackTrace();        }        long day = between / (24 * 60 * 60 * 1000);        long hour = (between / (60 * 60 * 1000) - day * 24);        long min = ((between / (60 * 1000)) - day * 24 * 60 - hour * 60);        long sec = (between / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);        String loveDays="已相恋："+day+"天";        String loveHoursMinutesSeconds=hour+"时"+min+"分"+sec+"秒";        tvLoveDays.setText(loveDays);        tvLoveHoursMinutesSeconds.setText(loveHoursMinutesSeconds);    }