Android--获取当前系统时间

 From:http://blog.csdn.net/zhangli_/article/details/52262599

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);

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）:

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SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

String date = sDateFormat.format(new java.util.Date());

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):

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SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM");

String date=sdf.format(new java.util.Date());

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()));

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");

　　}

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:

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Calendar c = Calendar.getInstance(); year = c.get(Calendar.YEAR); month = c.grt(Calendar.MONTH); day = c.get(Calendar.DAY_OF_MONTH);

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：

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Calendar c = Calendar.getInstance(); hour = c.get(Calendar.HOUR_OF_DAY); minute = c.get(Calendar.MINUTE);

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;

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;

}

} 

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;
}

}