android 中 系統日期時間的獲取

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());//獲取當前時間       
String    str    =    formatter.format(curDate);    

可以獲取當前的年月時分,也可以分開寫:

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SimpleDateFormat    sDateFormat    =   new    SimpleDateFormat("yyyy-MM-dd    hh:mm:ss");       
String    date    =    sDateFormat.format(new    java.util.Date());  

如果想獲取當前的年月,則可以這樣寫(只獲取時間或秒種一樣):
Java代碼

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SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM");    
String date=sdf.format(new java.util.Date());    

當然還有就是可以指定時區的時間(待):

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df=DateFormat.getDateTimeInstance(DateFormat.FULL,DateFormat.FULL,Locale.CHINA);  
System.out.println(df.format(new Date())); 

如何獲取Android系統時間是24小時制還是12小時制

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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();
取得系統日期:year = c.get(Calendar.YEAR)
month = c.grt(Calendar.MONTH)
day = c.get(Calendar.DAY_OF_MONTH)
取得系統時間：hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE)

利用Calenda
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Calendar c = Calendar.getInstance();
取得系統日期:year = c.get(Calendar.YEAR)
month = c.grt(Calendar.MONTH)
day = c.get(Calendar.DAY_OF_MONTH)
取得系統時間：hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE)
Calendar c = Calendar.getInstance();
取得系統日期:year = c.get(Calendar.YEAR)
month = c.grt(Calendar.MONTH)
day = c.get(Calendar.DAY_OF_MONTH)
取得系統時間：hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE)
利用Time獲取

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Time t=new Time(); // or Time t=new Time("GMT+8"); 加上Time Zone資料。  
t.setToNow(); // 取得系統時間。  
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;  

唯一不足是取出時間只有24小時模式.