android 中 系统日期时间的获取

From：http://blog.csdn.net/feifei454498130/article/details/6540133

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);       

可以获取当前的年月时分,也可以分开写:

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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):

Java代码

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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):

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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

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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");
       }
 

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Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
               month = c.grt(Calendar.MONTH)
               day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                  minute = c.get(Calendar.MINUTE)

利用Calendar获取

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Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
               month = c.grt(Calendar.MONTH)
               day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                  minute = c.get(Calendar.MINUTE)
                    Calendar c = Calendar.getInstance();
取得系统日期:year = c.get(Calendar.YEAR)
                   month = c.grt(Calendar.MONTH)
                   day = c.get(Calendar.DAY_OF_MONTH)
取得系统时间：hour = c.get(Calendar.HOUR_OF_DAY);
                     minute = c.get(Calendar.MINUTE)

利用Time获取

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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;