Android 获取时间实例代码
Android获取时间实例代码
注意：
h：12小时制小时数
H：24小时制小时数
实例代码：
importjava.text.DateFormat;
importjava.text.ParseException;
importjava.text.SimpleDateFormat;
importjava.util.Calendar;
importjava.util.Date;
/**
*CreatedbyAdministratoron2017/5/8.
*/
publicclassGetTime{
publicstaticvoidmain(String[]args){
Datedate=newDate();
System.out.println(date);//MonMay0814:27:44CST2017
System.out.println(newSimpleDateFormat("yyyy-MM-ddhh:mm:ss").format(date));//2017-05-0802:27:44
longmillis=System.currentTimeMillis();
System.out.println(millis);//1494224864479
System.out.println(newSimpleDateFormat("yyyy-MM-ddhh:mm:ss").format(millis));//2017-05-0802:27:44
//yyyy-MM-ddEhh:mm:ss.sss
//年-月-日星期时:分:秒.毫秒
System.out.println(newSimpleDateFormat("yyyy-MM-ddEhh:mm:ss.sss").format(date));//2017-05-08星期一02:27:44.044
System.out.println(newSimpleDateFormat("yyyy-MM-ddHH:mm:ss.sss").format(date));//2017-05-0814:27:44.044
System.out.println(newSimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(date));//2017-05-0814:27:44
System.out.println(newSimpleDateFormat("yyyy-MM-ddHH:mm").format(date));//2017-05-0814:27
System.out.println(newSimpleDateFormat().format(date));//17-5-8下午2:27:默认
compareDataToNow("2017-05-0312:45:00");
try{
Datedate1=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss").parse("2017-05-0312:45:00");
compareToNowDate(date1);
}catch(ParseExceptione){
e.printStackTrace();
}
getWeek();
getTime1();
getTime2();
}
staticvoidgetTime1(){
longtime=System.currentTimeMillis();
//longnow=android.os.SystemClock.uptimeMillis();
SimpleDateFormatformat=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss");
Dated1=newDate(time);
Stringt1=format.format(d1);
System.out.println("SimpleDateFormat时间==="+t1);//2017-05-0812:44:10
SimpleDateFormatf4=newSimpleDateFormat("今天是"+"yyyy年MM月dd日Ekk点mm分");
System.out.println("f4======"+f4.format(newDate()));//今天是2017年05月08日星期一14点15分
SimpleDateFormatf3=newSimpleDateFormat("今天是"+"hh小时mm分钟");
System.out.println("f3======"+f3.format(newDate()));//今天是02小时15分钟
SimpleDateFormatf2=newSimpleDateFormat("今天是"+"kk点mm分钟");
System.out.println("f2======"+f2.format(newDate()));//今天是14点17分钟
}
staticvoidgetTime2(){
Calendarcalendar=Calendar.getInstance();
Stringcreated=calendar.get(Calendar.YEAR)+"年"
+(calendar.get(Calendar.MONTH)+1)+"月"//从0计算
+calendar.get(Calendar.DAY_OF_MONTH)+"日"
+calendar.get(Calendar.HOUR_OF_DAY)+"时"
+calendar.get(Calendar.MINUTE)+"分"+calendar.get(Calendar.SECOND)+"s";
System.out.println("Calendar时间===="+created);//时间：2017年5月8日12时33分24s
}
staticvoidgetWeek(){
Calendarcalendar=Calendar.getInstance();
intday=calendar.get(Calendar.DAY_OF_WEEK);
Stringtoday=null;
if(day==2){
today="Monday";
}elseif(day==3){
today="Tuesday";
}elseif(day==4){
today="Wednesday";
}elseif(day==5){
today="Thursday";
}elseif(day==6){
today="Friday";
}elseif(day==7){
today="Saturday";
}elseif(day==1){
today="Sunday";
}
System.out.println("Todayis:-"+today);//Todayis:-Monday
}
//计算日期之间相隔几天：
staticlongcompareDataToNow(Stringdate){
SimpleDateFormatsdf=newSimpleDateFormat("yyyy-MM-ddHH:mm:ss");
DatepassDate,nowDate;
longdiff=-100l,days=-100l;
try{
passDate=sdf.parse(date);
StringnowStr=sdf.format(newDate());
nowDate=sdf.parse(nowStr);
diff=passDate.getTime()-nowDate.getTime();//long型的毫秒数
days=diff/(1000*60*60*24);
System.out.println("相隔："+days+"天"+"nowDate.getTime()====="+nowDate.getTime());//-5天
}catch(ParseExceptione){
e.printStackTrace();
}
returndiff;
}
//计算日期之间相隔几天：
staticlongcompareToNowDate(Datedate){
longdiff=-100l,days=-100l;
DatenowDate=newDate();
diff=date.getTime()-nowDate.getTime();//long型的毫秒数
days=diff/(1000*60*60*24);
System.out.println("相隔："+days+"天"+"nowDate.getTime()====="+nowDate.getTime());//-5天
returndiff;
}
}
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