この要件は、datepicker を使用したカスタム xml レイアウトを含むカスタム ダイアログを作成することで解決しました。
次の例は、日曜日がない、特定の日付より前の日付がないなどの特別なニーズを持つ日付ピッカー ダイアログが必要なすべての人のために作成されました。
カスタム日付ピッカーを作成します。
public void showDatePicker() {
final String dateFormatStr = "yyyyMMdd";
final String dateSearchFormatStr = "yyyy-MM-dd";
final String dateFormatStrGUI = "dd.MM.yyyy";
final String dateFormatStrGUIDatepickerDialog = "EEEE, dd.MM.yyyy";
final String minDateAvailable = "01.01.2005";
// Initializiation
LayoutInflater inflater = (LayoutInflater) getLayoutInflater();
final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
View customView = inflater.inflate(R.layout.activity_dateselect_dialog, null);
dialogBuilder.setView(customView);
final DatePicker datePicker = (DatePicker) customView.findViewById(R.id.activity_thumbnail_dateselect_dialog_datepicker);
final TextView dateTextView = (TextView) customView.findViewById(R.id.activity_thumbnail_dateselect_dialog_dateview);
final SimpleDateFormat dateTextViewFormatter = new SimpleDateFormat(Constants.dateFormatStrGUIDatepickerDialog, Locale.GERMANY);
// Minimum date
SimpleDateFormat formatter = new SimpleDateFormat(Constants.dateFormatStrGUI, Locale.GERMANY);
Calendar minDate = Calendar.getInstance();
try {
minDate.setTime(formatter.parse(Constants.minDateAvailable));
} catch (ParseException e) {
e.printStackTrace();
}
datePicker.setMinDate(minDate.getTimeInMillis());
// View settings
dialogBuilder.setTitle("Choose date");
Calendar choosenDate = Calendar.getInstance();
int year = choosenDate.get(Calendar.YEAR);
int month = choosenDate.get(Calendar.MONTH);
int day = choosenDate.get(Calendar.DAY_OF_MONTH);
try {
Date choosenDateFromUI = formatter.parse(newspaperDatePickerButton.getText().toString());
choosenDate.setTime(choosenDateFromUI);
year = choosenDate.get(Calendar.YEAR);
month = choosenDate.get(Calendar.MONTH);
day = choosenDate.get(Calendar.DAY_OF_MONTH);
} catch (Exception e) {
e.printStackTrace();
}
Calendar dateToDisplay = Calendar.getInstance();
dateToDisplay.set(year, month, day);
dateTextView.setText(dateTextViewFormatter.format(dateToDisplay.getTime()));
// Buttons
dialogBuilder.setNegativeButton("today", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
newspaperDatePickerButton.setText(R.string.date_latest_identifier);
newspaperDate = getString(R.string.date_latest_identifier);
controller.loadNewspaper(newspaperDate, model.getSubscriptions().get(newspaperEditionPosition), true);
dialog.dismiss();
}
});
dialogBuilder.setPositiveButton("Apply", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
SimpleDateFormat formatter = new SimpleDateFormat(Constants.dateFormatStrGUI, Locale.GERMANY);
Calendar now = Calendar.getInstance();
Calendar choosen = Calendar.getInstance();
choosen.set(datePicker.getYear(), datePicker.getMonth(), datePicker.getDayOfMonth());
if (now.compareTo(choosen) == 0) {
newspaperDate = getString(R.string.date_latest_identifier);
newspaperDatePickerButton.setText(newspaperDate);
} else {
newspaperDate = formatter.format(choosen.getTime());
newspaperDatePickerButton.setText(newspaperDate);
}
controller.loadNewspaper(newspaperDate, model.getSubscriptions().get(newspaperEditionPosition), false);
dialog.dismiss();
}
});
final AlertDialog dialog = dialogBuilder.create();
// Datepicker
datePicker.init(year, month, day, new DatePicker.OnDateChangedListener() {
public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
Calendar choosenDate = Calendar.getInstance();
choosenDate.set(year, monthOfYear, dayOfMonth);
Calendar now = Calendar.getInstance();
dateTextView.setText(dateTextViewFormatter.format(choosenDate.getTime()));
if (choosenDate.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY || now.compareTo(choosenDate) < 0) {
dateTextView.setTextColor(Color.parseColor("#ff0000"));
((Button) dialog.getButton(AlertDialog.BUTTON_POSITIVE)).setEnabled(false);
} else {
dateTextView.setTextColor(Color.parseColor("#000000"));
((Button) dialog.getButton(AlertDialog.BUTTON_POSITIVE)).setEnabled(true);
}
}
});
// Finish
dialog.show();
}
レイアウト
<TextView
android:id="@+id/activity_thumbnail_dateselect_dialog_dateview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:layout_margin="12dp"
android:text=""
android:layout_gravity="center"/>
<DatePicker
android:id="@+id/activity_thumbnail_dateselect_dialog_datepicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:calendarViewShown="false"/>