mCalendar = Calendar.getInstance(); /**  * 日历  */ //时间显示 String dataSplit = getTimeStyle(mCalendar); String[] dataSplits = dataSplit.split("-"); mTvTimeEnd.setText(dataSplits[0] + "-" + String.valueOf(getStringDate(Integer.valueOf(dataSplits[1]))) + "-" + String.valueOf(getStringDate(Integer.valueOf(dataSplits[2])))); //时间间隔 mCalendar.add(Calendar.DAY_OF_MONTH, -30); String dataSplit1 = getTimeStyle(mCalendar); String[] dataSplit1s = dataSplit1.split("-"); mTvTimeStart.setText(dataSplit1s[0] + "-" + String.valueOf(getStringDate(Integer.valueOf(dataSplit1s[1]))) + "-" + String.valueOf(getStringDate(Integer.valueOf(dataSplit1s[2]))));

private Calendar showDatePickers(Calendar calendar) {
      DatePickerDialog dialog = new DatePickerDialog(mContext, (view, year, month, dayOfMonth) -> {
          calendar.set(year, month, dayOfMonth);         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");     }, calendar.get(Calendar.YEAR),             calendar.get(Calendar.MONTH),             calendar.get(Calendar.DAY_OF_MONTH));     //设置日期最小值(只能选择当前时间以后的时间)     dialog.getDatePicker().setMinDate(Calendar.getInstance().getTimeInMillis());     dialog.show();     return calendar; }

@Override protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
      super.onActivityResult(requestCode, resultCode, data);     if (data != null && resultCode == PeriodTimeDateActivity.RESULT_OK) {
          ArrayList
    
      date = data.getIntegerArrayListExtra(PeriodTimeDateActivity.DEFAULT_DATE);         mTvTimeStart.setText(date.get(0) + "-" + getStringDate(date.get(1)) + "-" + getStringDate(date.get(2)));         mTvTimeEnd.setText(date.get(3) + "-" + getStringDate(date.get(4)) + "-" + getStringDate(date.get(5)));     } }
    

/**  * 日期格式转换  */ private String getTimeStyle(Calendar calendar) {
      String f = "%d-%d-%d";     int year = calendar.get(Calendar.YEAR);     int month = calendar.get(Calendar.MONTH);     int day = calendar.get(Calendar.DAY_OF_MONTH);     return String.format(f, year, month + 1, day); } private String getStringDate(int num) {
      if (num < 10) {
          return "0" + num;     }     return String.valueOf(num); }