Android随时显示当前时间

        //直接在方法中打      
       Calendar c = Calendar.getInstance();
        // 获取当前年份
       String mYear = String.valueOf(c.get(Calendar.YEAR)); 
        // 获取当前月份
       String mMonth = String.valueOf(c.get(Calendar.MONTH) + 1);
        // 获取当前月份的日期号码
       String mDay = String.valueOf(c.get(Calendar.DAY_OF_MONTH));
        // 获取当前星期 他获得的是数字1 2 3 4 5 6所以根据数字换一下
       String mWay = String.valueOf(c.get(Calendar.DAY_OF_WEEK));
        if ("1".equals(mWay)) {
            mWay = "天";
        } else if ("2".equals(mWay)) {
            mWay = "一";
        } else if ("3".equals(mWay)) {
            mWay = "二";
        } else if ("4".equals(mWay)) {
            mWay = "三";
        } else if ("5".equals(mWay)) {
            mWay = "四";
        } else if ("6".equals(mWay)) {
            mWay = "五";
        } else if ("7".equals(mWay)) {
            mWay = "六";
        }
       //textview赋值
        date.setText(mYear + "." + mMonth + "." + mDay + "             星期"
                + mWay+"              "+"今天");