| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.app; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.StyleRes; |
| import android.annotation.UnsupportedAppUsage; |
| import android.content.Context; |
| import android.content.DialogInterface; |
| import android.content.DialogInterface.OnClickListener; |
| import android.os.Bundle; |
| import android.util.TypedValue; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.widget.Button; |
| import android.widget.DatePicker; |
| import android.widget.DatePicker.OnDateChangedListener; |
| import android.widget.DatePicker.ValidationCallback; |
| |
| import com.android.internal.R; |
| |
| import java.util.Calendar; |
| |
| /** |
| * A simple dialog containing an {@link android.widget.DatePicker}. |
| * <p> |
| * See the <a href="{@docRoot}guide/topics/ui/controls/pickers.html">Pickers</a> |
| * guide. |
| */ |
| public class DatePickerDialog extends AlertDialog implements OnClickListener, |
| OnDateChangedListener { |
| private static final String YEAR = "year"; |
| private static final String MONTH = "month"; |
| private static final String DAY = "day"; |
| |
| @UnsupportedAppUsage |
| private final DatePicker mDatePicker; |
| |
| private OnDateSetListener mDateSetListener; |
| |
| /** |
| * Creates a new date picker dialog for the current date using the parent |
| * context's default date picker dialog theme. |
| * |
| * @param context the parent context |
| */ |
| public DatePickerDialog(@NonNull Context context) { |
| this(context, 0, null, Calendar.getInstance(), -1, -1, -1); |
| } |
| |
| /** |
| * Creates a new date picker dialog for the current date. |
| * |
| * @param context the parent context |
| * @param themeResId the resource ID of the theme against which to inflate |
| * this dialog, or {@code 0} to use the parent |
| * {@code context}'s default alert dialog theme |
| */ |
| public DatePickerDialog(@NonNull Context context, @StyleRes int themeResId) { |
| this(context, themeResId, null, Calendar.getInstance(), -1, -1, -1); |
| } |
| |
| /** |
| * Creates a new date picker dialog for the specified date using the parent |
| * context's default date picker dialog theme. |
| * |
| * @param context the parent context |
| * @param listener the listener to call when the user sets the date |
| * @param year the initially selected year |
| * @param month the initially selected month (0-11 for compatibility with |
| * {@link Calendar#MONTH}) |
| * @param dayOfMonth the initially selected day of month (1-31, depending |
| * on month) |
| */ |
| public DatePickerDialog(@NonNull Context context, @Nullable OnDateSetListener listener, |
| int year, int month, int dayOfMonth) { |
| this(context, 0, listener, null, year, month, dayOfMonth); |
| } |
| |
| /** |
| * Creates a new date picker dialog for the specified date. |
| * |
| * @param context the parent context |
| * @param themeResId the resource ID of the theme against which to inflate |
| * this dialog, or {@code 0} to use the parent |
| * {@code context}'s default alert dialog theme |
| * @param listener the listener to call when the user sets the date |
| * @param year the initially selected year |
| * @param monthOfYear the initially selected month of the year (0-11 for |
| * compatibility with {@link Calendar#MONTH}) |
| * @param dayOfMonth the initially selected day of month (1-31, depending |
| * on month) |
| */ |
| public DatePickerDialog(@NonNull Context context, @StyleRes int themeResId, |
| @Nullable OnDateSetListener listener, int year, int monthOfYear, int dayOfMonth) { |
| this(context, themeResId, listener, null, year, monthOfYear, dayOfMonth); |
| } |
| |
| private DatePickerDialog(@NonNull Context context, @StyleRes int themeResId, |
| @Nullable OnDateSetListener listener, @Nullable Calendar calendar, int year, |
| int monthOfYear, int dayOfMonth) { |
| super(context, resolveDialogTheme(context, themeResId)); |
| |
| final Context themeContext = getContext(); |
| final LayoutInflater inflater = LayoutInflater.from(themeContext); |
| final View view = inflater.inflate(R.layout.date_picker_dialog, null); |
| setView(view); |
| |
| setButton(BUTTON_POSITIVE, themeContext.getString(R.string.ok), this); |
| setButton(BUTTON_NEGATIVE, themeContext.getString(R.string.cancel), this); |
| setButtonPanelLayoutHint(LAYOUT_HINT_SIDE); |
| |
| if (calendar != null) { |
| year = calendar.get(Calendar.YEAR); |
| monthOfYear = calendar.get(Calendar.MONTH); |
| dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH); |
| } |
| |
| mDatePicker = (DatePicker) view.findViewById(R.id.datePicker); |
| mDatePicker.init(year, monthOfYear, dayOfMonth, this); |
| mDatePicker.setValidationCallback(mValidationCallback); |
| |
| mDateSetListener = listener; |
| } |
| |
| static @StyleRes int resolveDialogTheme(@NonNull Context context, @StyleRes int themeResId) { |
| if (themeResId == 0) { |
| final TypedValue outValue = new TypedValue(); |
| context.getTheme().resolveAttribute(R.attr.datePickerDialogTheme, outValue, true); |
| return outValue.resourceId; |
| } else { |
| return themeResId; |
| } |
| } |
| |
| @Override |
| public void onDateChanged(@NonNull DatePicker view, int year, int month, int dayOfMonth) { |
| mDatePicker.init(year, month, dayOfMonth, this); |
| } |
| |
| /** |
| * Sets the listener to call when the user sets the date. |
| * |
| * @param listener the listener to call when the user sets the date |
| */ |
| public void setOnDateSetListener(@Nullable OnDateSetListener listener) { |
| mDateSetListener = listener; |
| } |
| |
| @Override |
| public void onClick(@NonNull DialogInterface dialog, int which) { |
| switch (which) { |
| case BUTTON_POSITIVE: |
| if (mDateSetListener != null) { |
| // Clearing focus forces the dialog to commit any pending |
| // changes, e.g. typed text in a NumberPicker. |
| mDatePicker.clearFocus(); |
| mDateSetListener.onDateSet(mDatePicker, mDatePicker.getYear(), |
| mDatePicker.getMonth(), mDatePicker.getDayOfMonth()); |
| } |
| break; |
| case BUTTON_NEGATIVE: |
| cancel(); |
| break; |
| } |
| } |
| |
| /** |
| * Returns the {@link DatePicker} contained in this dialog. |
| * |
| * @return the date picker |
| */ |
| @NonNull |
| public DatePicker getDatePicker() { |
| return mDatePicker; |
| } |
| |
| /** |
| * Sets the current date. |
| * |
| * @param year the year |
| * @param month the month (0-11 for compatibility with |
| * {@link Calendar#MONTH}) |
| * @param dayOfMonth the day of month (1-31, depending on month) |
| */ |
| public void updateDate(int year, int month, int dayOfMonth) { |
| mDatePicker.updateDate(year, month, dayOfMonth); |
| } |
| |
| @Override |
| public Bundle onSaveInstanceState() { |
| final Bundle state = super.onSaveInstanceState(); |
| state.putInt(YEAR, mDatePicker.getYear()); |
| state.putInt(MONTH, mDatePicker.getMonth()); |
| state.putInt(DAY, mDatePicker.getDayOfMonth()); |
| return state; |
| } |
| |
| @Override |
| public void onRestoreInstanceState(Bundle savedInstanceState) { |
| super.onRestoreInstanceState(savedInstanceState); |
| final int year = savedInstanceState.getInt(YEAR); |
| final int month = savedInstanceState.getInt(MONTH); |
| final int day = savedInstanceState.getInt(DAY); |
| mDatePicker.init(year, month, day, this); |
| } |
| |
| private final ValidationCallback mValidationCallback = new ValidationCallback() { |
| @Override |
| public void onValidationChanged(boolean valid) { |
| final Button positive = getButton(BUTTON_POSITIVE); |
| if (positive != null) { |
| positive.setEnabled(valid); |
| } |
| } |
| }; |
| |
| /** |
| * The listener used to indicate the user has finished selecting a date. |
| */ |
| public interface OnDateSetListener { |
| /** |
| * @param view the picker associated with the dialog |
| * @param year the selected year |
| * @param month the selected month (0-11 for compatibility with |
| * {@link Calendar#MONTH}) |
| * @param dayOfMonth th selected day of the month (1-31, depending on |
| * month) |
| */ |
| void onDateSet(DatePicker view, int year, int month, int dayOfMonth); |
| } |
| } |