android.widget.DatePicker#setCalendarViewShown ( )源码实例Demo

/**
 * 年月选择对话框
 *
 * @param con
 * @param title
 * @param calendar
 * @param listener
 */
public static void pickMonth(Context con, String title, Calendar calendar, final OnDateSetListener listener) {
    LinearLayout ll = new LinearLayout(con);
    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    ll.setLayoutParams(layoutParams);
    ll.setOrientation(LinearLayout.VERTICAL);
    //添加一条线
    LinearLayout line = new LinearLayout(con);
    LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 1);
    line.setBackgroundColor(con.getResources().getColor(R.color.line));
    line.setLayoutParams(lp);
    ll.addView(line);
    //添加选择器控件
    final DatePicker datePicker = new DatePicker(con, null, themeId);
    datePicker.setLayoutParams(layoutParams);
    datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), null);
    datePicker.setCalendarViewShown(false);
    ll.addView(datePicker);
    //初始化对话框
    QuickDialog.Builder builder = new QuickDialog.Builder(con);
    builder.setContentView(ll);
    builder.setTitle(title);
    builder.setPositiveButton(R.string.confirm, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
            listener.onDateSet(datePicker, datePicker.getYear(), datePicker.getMonth(), datePicker.getDayOfMonth());
        }
    });
    builder.create().show();
}
 

/**
 * {@inheritDoc}
 *
 * @return      A new dialog to let the user choose an expiration date that will be bound to a share link.
 */
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Load arguments
    mFile = getArguments().getParcelable(ARG_FILE);

    // Chosen date received as an argument must be later than tomorrow ; default to tomorrow in other case
    final Calendar chosenDate = Calendar.getInstance();
    long tomorrowInMillis = chosenDate.getTimeInMillis() + DateUtils.DAY_IN_MILLIS;
    long chosenDateInMillis = getArguments().getLong(ARG_CHOSEN_DATE_IN_MILLIS);
    if (chosenDateInMillis > tomorrowInMillis) {
        chosenDate.setTimeInMillis(chosenDateInMillis);
    } else {
        chosenDate.setTimeInMillis(tomorrowInMillis);
    }

    // Create a new instance of DatePickerDialog
    DatePickerDialog dialog = new DatePickerDialog(
            getActivity(),
            this,
            chosenDate.get(Calendar.YEAR),
            chosenDate.get(Calendar.MONTH),
            chosenDate.get(Calendar.DAY_OF_MONTH)
    );

    // Prevent days in the past may be chosen
    DatePicker picker = dialog.getDatePicker();
    picker.setMinDate(tomorrowInMillis - 1000);

    // Enforce spinners view; ignored by MD-based theme in Android >=5, but calendar is REALLY buggy
    // in Android < 5, so let's be sure it never appears (in tablets both spinners and calendar are
    // shown by default)
    picker.setCalendarViewShown(false);

    return dialog;
}
 

private void datePicker(String targetElement, Calendar initialDate) {
	// Remove single-quotes from the `targetElement` CSS selecter, as
	// we'll be using these to enclose the entire string in JS.  We
	// are not trying to properly escape these characters, just prevent
	// suprises from JS injection.
	final String safeTargetElement = targetElement.replace('\'', '_');

	DatePickerDialog.OnDateSetListener listener = new DatePickerDialog.OnDateSetListener() {
		public void onDateSet(DatePicker view, int year, int month, int day) {
			++month;
			String dateString = String.format(UK, "%04d-%02d-%02d", year, month, day);
			String setJs = String.format("$('%s').val('%s').trigger('change')",
					safeTargetElement, dateString);
			parent.evaluateJavascript(setJs);
		}
	};

	// Make sure that the datepicker uses spinners instead of calendars.  Material design
	// does not support non-calendar view, so we explicitly use the Holo theme here.
	// Rumours suggest this may still show a calendar view on Android 24.  This has not been confirmed.
	// https://stackoverflow.com/questions/28740657/datepicker-dialog-without-calendar-visualization-in-lollipop-spinner-mode
	DatePickerDialog dialog = new DatePickerDialog(parent, android.R.style.Theme_Holo_Dialog, listener,
			initialDate.get(YEAR), initialDate.get(MONTH), initialDate.get(DAY_OF_MONTH));

	DatePicker picker = dialog.getDatePicker();
	picker.setCalendarViewShown(false);
	picker.setSpinnersShown(true);

	dialog.show();
}
 

private DatePicker buildDatePicker(boolean isQuestionWriteable) {
    DatePicker datePicker = new DatePicker(getContext());
    datePicker.setFocusable(isQuestionWriteable);
    datePicker.setEnabled(isQuestionWriteable);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        datePicker.setCalendarViewShown(false);
    }
    return datePicker;
}
 

@Override
protected View onCreateDialogView() {
    dp = new DatePicker(getContext());
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        dp.setCalendarViewShown(true);
        dp.setSpinnersShown(false);
        dp.setMaxDate(System.currentTimeMillis());
    }
    updateDialog();
    return dp;
}
 

/**
 * 隐藏日，只选择年月
 */
public void hideDay() {
    if (Build.VERSION.SDK_INT >= 24) {
        try {
            final Field field = this.findField(DatePickerDialog.class,
                    DatePicker.class, "mDatePicker");

            DatePicker datePicker = (DatePicker) field.get(this);
            final Class<?> delegateClass = Class
                    .forName("android.widget.DatePicker$DatePickerDelegate");
            final Field delegateField = this.findField(DatePicker.class,
                    delegateClass, "mDelegate");

            final Object delegate = delegateField.get(datePicker);
            final Class<?> spinnerDelegateClass = Class
                    .forName("android.widget.DatePickerSpinnerDelegate");

            if (delegate.getClass() != spinnerDelegateClass) {
                delegateField.set(datePicker, null);
                datePicker.removeAllViews();

                final Constructor spinnerDelegateConstructor = spinnerDelegateClass
                        .getDeclaredConstructor(DatePicker.class,
                                Context.class, AttributeSet.class,
                                int.class, int.class);
                spinnerDelegateConstructor.setAccessible(true);

                final Object spinnerDelegate = spinnerDelegateConstructor
                        .newInstance(datePicker, con, null,
                                android.R.attr.datePickerStyle, 0);
                delegateField.set(datePicker, spinnerDelegate);

                datePicker.init(year, monthOfYear, dayOfMonth, this);
                datePicker.setCalendarViewShown(false);
                datePicker.setSpinnersShown(true);
            }
        } catch (Exception e) { /* Do nothing */
        }
    } else {
        ((ViewGroup) ((ViewGroup) getDatePicker().getChildAt(0)).getChildAt(0)).getChildAt(2).setVisibility(View.GONE);
    }
}