我有两个日期选择器对话框，我想根据两个对话框选择器的选择更改日期并设置最大值和最小值。 如果我选择＆＃34;开始日期＆＃34;，结束日期应以＆＃34;开始日期＆＃34;开头。选择的值，如果我选择＆＃34;结束日期＆＃34;第一个＆＃34;开始日期＆＃34;最长日期应该是＆＃34;结束日期＆＃34;选定的价值。
private DatePickerDialog datePickerOne;
private DatePickerDialog datePickeTwo;
private void MyListener() {
final Calendar calendarMain = Calendar.getInstance();
Year = calendarMain.get(Calendar.YEAR);
Month = calendarMain.get(Calendar.MONTH);
Day = calendarMain.get(Calendar.DAY_OF_MONTH);
datePickerOne = new DatePickerDialog(activity, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Year = year;
Month = monthOfYear;
Day = dayOfMonth;
StringBuilder selectedDateFrom = new StringBuilder().append(dayOfMonth).append("-").append(monthOfYear + 1).append("-").append(year);
textDateStart.setText(selectedDateFrom);
textDateStart.setTextColor(android.graphics.Color.BLACK);
Calendar c2 = Calendar.getInstance();
int yearResp=c2.get(Calendar.YEAR);
int monthResp=c2.get(Calendar.MONTH);
int dayResp=c2.get(Calendar.DAY_OF_MONTH);
datePickerTwo.getDatePicker().setMinDate(c2.getTime().getTime());
datePickerTwo.updateDate(dayResp, monthResp,yearResp);
datePickerTwo.getDatePicker().setMaxDate(new Date().getTime());
}
}, Year, Month, Day);
textDateStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
datePickerOne.show();
}
});
datePickerTwo = new DatePickerDialog(activity, new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Year = year;
Month = monthOfYear;
Day = dayOfMonth;
StringBuilder selectedDateTO = new StringBuilder().append(dayOfMonth).append("-").append(monthOfYear + 1).append("-").append(year);
textDateEnd.setText(selectedDateTO);
textDateEnd.setTextColor(android.graphics.Color.BLACK);
Calendar c3 = Calendar.getInstance();
int yearResp=c3.get(Calendar.YEAR);
int monthResp=c3.get(Calendar.MONTH);
int dayResp=c3.get(Calendar.DAY_OF_MONTH);
datePickerOne.getDatePicker().setMaxDate(c3.getTime().getTime());
datePickerOne.updateDate(dayResp, monthResp,yearResp);
datePickerOne.getDatePicker().setMinDate(new Date().getTime());
}
}, Year, Month, Day);
textDateEnd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
datePickerTwo.show();
}
});
现在只有我可以更改值的初始时间，下次不能正常工作。这里的datepicker对话框是datePickerOne和datePickerTwo。 textDateStart和textDateEnd是textviews。
答案 0 :(得分：0)
您可以创建自己的日期选择器对话框片段并通过意图传递数据，并在调用者片段/活动的onActivityResult中获得所需的结果取决于您想要的位置以下代码可能对您有所帮助
public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {
public static final String FROM_DATE = "fromdate";
public static final String TO_DATE = "todate";
public static final String WHICH_DATE_TO_CHANGE = "which";
private String fromDate;
private String toDate;
private int whichDate;
public static final int FROM_DATE_FLAG = 0;
public static final int TO_DATE_FLAG = 1;
private Date fromDateObj;
private Date toDateObj;
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
String arra[] = null;
fromDate = getArguments().getString(FROM_DATE);
toDate = getArguments().getString(TO_DATE);
whichDate = getArguments().getInt(WHICH_DATE_TO_CHANGE);
initDateObjs();
switch (whichDate) {
case FROM_DATE_FLAG:
arra = fromDate.split("-");
break;
case TO_DATE_FLAG:
arra = toDate.split("-");
break;
}
int year = Integer.parseInt(arra[0]);
int month = Integer.parseInt(arra[1]) - 1;
int day = Integer.parseInt(arra[2]);
android.app.DatePickerDialog datePickerDialog = null;
// Create a new instance of DatePickerDialog and return it
if (Build.VERSION.SDK_INT >= 21) {
datePickerDialog = new android.app.DatePickerDialog(getActivity(), R.style.DialogFragmentTheme, this, year, month, day);
} else {
datePickerDialog = new android.app.DatePickerDialog(getActivity(), this, year, month, day);
}
datePickerDialog.getDatePicker().setMinDate(getMinDate());
datePickerDialog.getDatePicker().setMaxDate(System.currentTimeMillis() - 1000);
return datePickerDialog;
}
public void initDateObjs() {
fromDateObj=getDateobject(fromDate);
toDateObj=getDateobject(toDate);
}
public Date getDateobject(String dateStr) {
//fromDateObj;
//toDateObj;
String arra[] = null;
arra = dateStr.split("-");
int year = Integer.parseInt(arra[0]);
int month = Integer.parseInt(arra[1]) - 1;
int day = Integer.parseInt(arra[2]);
Calendar cal = Calendar.getInstance();
cal.set(year, month, day);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return cal.getTime();
}
public static long getMinDate() {
// getting date 30 days back for data of graph
/* SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
Date parsedDate = formatter.parse(dateInString);*/
Calendar cal = Calendar.getInstance();
/*
cal.set(someTimeDuringYear1, someTimeDuringMonth1 - 1, someTimeDuringDay1);
*/
cal.set(Calendar.HOUR_OF_DAY, cal.getMinimum(Calendar.HOUR_OF_DAY));
cal.set(Calendar.MINUTE, cal.getMinimum(Calendar.MINUTE));
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
// Calendar.add(Calendar.DAY_OF_YEAR, -15)
// first parameter is represent days of year and second is how many days before the current date
cal.add(Calendar.MONTH, -11);
return cal.getTime().getTime();
}
public boolean vaidatePickedDate(String picekdDate) {
boolean flag=true;
Date date=getDateobject(picekdDate);
switch (whichDate) {
case FROM_DATE_FLAG:
if(date.compareTo(toDateObj)>0){
// error
flag=false;
}
break;
case TO_DATE_FLAG:
if(date.compareTo(fromDateObj)<0){
flag=false;
}
break;
}
return flag;
}
@Override
public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Intent intent = new Intent();
//yyyy-MM-dd
monthOfYear = monthOfYear + 1;
String day = String.valueOf(dayOfMonth);
String month = String.valueOf(monthOfYear);
if (day.length() == 1) {
day = "0" + dayOfMonth;
}
if (month.length() == 1) {
month = "0" + monthOfYear;
}
String dateRes=year + "-" + month + "-" + day;
intent.putExtra("date",dateRes );
if(vaidatePickedDate(dateRes)){
getTargetFragment().onActivityResult(getTargetRequestCode(), Activity.RESULT_OK, intent);
dismiss();
}else {
showErrorMessage();
}
}
public void showErrorMessage(){
switch (whichDate){
case FROM_DATE_FLAG:
Toast.makeText(getActivity(),getString(R.string.from_date_error),Toast.LENGTH_SHORT).show();
break;
case TO_DATE_FLAG:
Toast.makeText(getActivity(),getString(R.string.to_date_error),Toast.LENGTH_SHORT).show();
break;
}
}
@Override
public void onCancel(DialogInterface dialog) {
super.onCancel(dialog);
if (getParentFragment() instanceof DialogInterface.OnCancelListener)
((DialogInterface.OnCancelListener) getParentFragment()).onCancel(dialog);
}
public static String getCurrentTimeStamp() {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd-MM-yyyy-hh-mm-ss");
return simpleDateFormat.format(new Date());
}
}
以下代码用于调用此datepicker对话框片段，这是我根据我的要求编写的，您必须根据您的要求进行更改
int requestCode=123;
DatePickerFragment datePickerFragment = new DatePickerFragment();
Bundle b = new Bundle();
b.putString(DatePickerFragment.FROM_DATE,
start_date_textview.getText().toString());
b.putString(DatePickerFragment.TO_DATE,
end_date_textview.getText().toString());
b.putInt(DatePickerFragment.WHICH_DATE_TO_CHANGE, whichDateToChange); //whichDateToChange is a flag to identify either its start date or end date
datePickerFragment.setArguments(b);
datePickerFragment.setTargetFragment(this, requestCode);
datePickerFragment.show(getChildFragmentManager(), "");
您将在onActivityResult
中获得结果