Android--获取当前系统时间

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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;      }        }

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