// 取得目前日期
Date date = new Date();
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
String currentDatetime = dateFormat.format(date);
// 日期-1
Calendar day = Calendar.getInstance();
day.add(Calendar.DATE,-1);
SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-MM-dd ");
System.out.println("yesterday =" + sdf.format(day.getTime()));
// String 轉日期
String currentDate = "2012-12-13";
Date date = sdf.parse(currentDate); // 解析
Calendar calendar = Calendar.getInstance(); // 呼叫Calendar
calendar.setTime(date); // 設定指定時間
int year=calendar.get(Calendar.YEAR); // 取得年月日
int month=calendar.get(Calendar.MONTH);
int day=calendar.get(Calendar.DAY_OF_MONTH);
String _year = Integer.toString(year); // 轉字串
String _month = Integer.toString(monthOfYear + 1);
String _day = Integer.toString(dayOfMonth);
String date = _year + "-" + _month + "-" + _day;
彈出日期選擇
void dateView(){
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
try {
//設定日期格式
Date date = sdf.parse(currentDate);
Calendar calendar = Calendar.getInstance();//取得目前時間
calendar.setTime(date);//或是設定指定時間
int year=calendar.get(Calendar.YEAR);
int month=calendar.get(Calendar.MONTH);
int day=calendar.get(Calendar.DAY_OF_MONTH);
new DatePickerDialog(this,
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year,int monthOfYear, int dayOfMonth) {
// 設置日曆
String _year = Integer.toString(year);
String _month = Integer.toString(monthOfYear + 1);
String _day = Integer.toString(dayOfMonth);
String date = _year + "-" + _month + "-" + _day;
currentDate = date;
editDate.setText(date);
}
}, year, month, day).show();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
