Android--获取当前系统时间


import java.text.SimpleDateFormat;

SimpleDateFormat formatter = new SimpleDateFormat ("yyyy年MM月dd日 HH:mm:ss ");
Date curDate = new Date(System.currentTimeMillis());//获取当前时间
String str = formatter.format(curDate);

以上可以获取当前的年月时分,也可以分开写(如下):
SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String date = sDateFormat.format(new java.util.Date());

如果想获取当前的年月,则可以这样写(只获取时间或秒种一样):
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM");
String date=sdf.format(new java.util.Date());

当然还有就是可以指定时区的时间(待):
df=DateFormat.getDateTimeInstance(DateFormat.FULL,DateFormat.FULL,Locale.CHINA);
System.out.println(df.format(new Date()));

如何获取Android系统时间是24小时制还是12小时制:

ContentResolver cv = this.getContentResolver();  
  String strTimeFormat = android.provider.Settings.System.getString(cv,
  android.provider.Settings.System.TIME_12_24);
  if(strTimeFormat.equals("24"))
  {
  Log.i("activity","24");
  }


取得系统日期:
Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.grt(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);

取得系统时间:
Calendar c = Calendar.getInstance();
hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE);

利用Time获取:
Time t=new Time(); // or Time t=new Time("GMT+8"); 加上Time Zone资料。
  t.setToNow(); // 取得系统时间。
  int year = t.year;
  int month = t.month;
  int date = t.monthDay;
  int hour = t.hour; // 0-23
  int minute = t.minute;
  int second = t.second;


public class DataString {  
    private static String mYear;  
    private static String mMonth;  
    private static String mDay;  
    private static String mWay;  
      
    public static String StringData(){  
        final Calendar c = Calendar.getInstance();  
        c.setTimeZone(TimeZone.getTimeZone("GMT+8:00"));  
        mYear = String.valueOf(c.get(Calendar.YEAR)); // 获取当前年份  
        mMonth = String.valueOf(c.get(Calendar.MONTH) + 1);// 获取当前月份  
        mDay = String.valueOf(c.get(Calendar.DAY_OF_MONTH));// 获取当前月份的日期号码  
        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";  
        }  
        return mYear + "年" + mMonth + "月" + mDay+"日"+"/星期"+mWay;  
    }  
      
}


原文

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