TimePickerDialog.java revision fbb045399fd7b455c8fd17cfc23a2f53642ba16b
1/* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17package com.android.datetimepicker.time; 18 19import android.animation.ObjectAnimator; 20import android.app.ActionBar.LayoutParams; 21import android.app.DialogFragment; 22import android.content.Context; 23import android.content.res.Resources; 24import android.os.Bundle; 25import android.util.Log; 26import android.view.KeyCharacterMap; 27import android.view.KeyEvent; 28import android.view.LayoutInflater; 29import android.view.View; 30import android.view.View.OnClickListener; 31import android.view.View.OnKeyListener; 32import android.view.ViewGroup; 33import android.view.Window; 34import android.widget.RelativeLayout; 35import android.widget.TextView; 36 37import com.android.datetimepicker.HapticFeedbackController; 38import com.android.datetimepicker.R; 39import com.android.datetimepicker.Utils; 40import com.android.datetimepicker.time.RadialPickerLayout.OnValueSelectedListener; 41 42import java.text.DateFormatSymbols; 43import java.util.ArrayList; 44import java.util.Locale; 45 46/** 47 * Dialog to set a time. 48 */ 49public class TimePickerDialog extends DialogFragment implements OnValueSelectedListener{ 50 private static final String TAG = "TimePickerDialog"; 51 52 private static final String KEY_HOUR_OF_DAY = "hour_of_day"; 53 private static final String KEY_MINUTE = "minute"; 54 private static final String KEY_IS_24_HOUR_VIEW = "is_24_hour_view"; 55 private static final String KEY_CURRENT_ITEM_SHOWING = "current_item_showing"; 56 private static final String KEY_IN_KB_MODE = "in_kb_mode"; 57 private static final String KEY_TYPED_TIMES = "typed_times"; 58 59 public static final int HOUR_INDEX = 0; 60 public static final int MINUTE_INDEX = 1; 61 // NOT a real index for the purpose of what's showing. 62 public static final int AMPM_INDEX = 2; 63 // Also NOT a real index, just used for keyboard mode. 64 public static final int ENABLE_PICKER_INDEX = 3; 65 public static final int AM = 0; 66 public static final int PM = 1; 67 68 // Delay before starting the pulse animation, in ms. 69 private static final int PULSE_ANIMATOR_DELAY = 300; 70 71 private OnTimeSetListener mCallback; 72 73 private HapticFeedbackController mHapticFeedbackController; 74 75 private TextView mDoneButton; 76 private TextView mHourView; 77 private TextView mHourSpaceView; 78 private TextView mMinuteView; 79 private TextView mMinuteSpaceView; 80 private TextView mAmPmTextView; 81 private View mAmPmHitspace; 82 private RadialPickerLayout mTimePicker; 83 84 private int mBlue; 85 private int mBlack; 86 private String mAmText; 87 private String mPmText; 88 89 private boolean mAllowAutoAdvance; 90 private int mInitialHourOfDay; 91 private int mInitialMinute; 92 private boolean mIs24HourMode; 93 94 // For hardware IME input. 95 private char mPlaceholderText; 96 private String mDoublePlaceholderText; 97 private String mDeletedKeyFormat; 98 private boolean mInKbMode; 99 private ArrayList<Integer> mTypedTimes; 100 private Node mLegalTimesTree; 101 private int mAmKeyCode; 102 private int mPmKeyCode; 103 104 // Accessibility strings. 105 private String mHourPickerDescription; 106 private String mSelectHours; 107 private String mMinutePickerDescription; 108 private String mSelectMinutes; 109 110 /** 111 * The callback interface used to indicate the user is done filling in 112 * the time (they clicked on the 'Set' button). 113 */ 114 public interface OnTimeSetListener { 115 116 /** 117 * @param view The view associated with this listener. 118 * @param hourOfDay The hour that was set. 119 * @param minute The minute that was set. 120 */ 121 void onTimeSet(RadialPickerLayout view, int hourOfDay, int minute); 122 } 123 124 public TimePickerDialog() { 125 // Empty constructor required for dialog fragment. 126 } 127 128 public TimePickerDialog(Context context, int theme, OnTimeSetListener callback, 129 int hourOfDay, int minute, boolean is24HourMode) { 130 // Empty constructor required for dialog fragment. 131 } 132 133 public static TimePickerDialog newInstance(OnTimeSetListener callback, 134 int hourOfDay, int minute, boolean is24HourMode) { 135 TimePickerDialog ret = new TimePickerDialog(); 136 ret.initialize(callback, hourOfDay, minute, is24HourMode); 137 return ret; 138 } 139 140 public void initialize(OnTimeSetListener callback, 141 int hourOfDay, int minute, boolean is24HourMode) { 142 mCallback = callback; 143 144 mInitialHourOfDay = hourOfDay; 145 mInitialMinute = minute; 146 mIs24HourMode = is24HourMode; 147 mInKbMode = false; 148 } 149 150 public void setOnTimeSetListener(OnTimeSetListener callback) { 151 mCallback = callback; 152 } 153 154 public void setStartTime(int hourOfDay, int minute) { 155 mInitialHourOfDay = hourOfDay; 156 mInitialMinute = minute; 157 mInKbMode = false; 158 } 159 160 @Override 161 public void onCreate(Bundle savedInstanceState) { 162 super.onCreate(savedInstanceState); 163 if (savedInstanceState != null && savedInstanceState.containsKey(KEY_HOUR_OF_DAY) 164 && savedInstanceState.containsKey(KEY_MINUTE) 165 && savedInstanceState.containsKey(KEY_IS_24_HOUR_VIEW)) { 166 mInitialHourOfDay = savedInstanceState.getInt(KEY_HOUR_OF_DAY); 167 mInitialMinute = savedInstanceState.getInt(KEY_MINUTE); 168 mIs24HourMode = savedInstanceState.getBoolean(KEY_IS_24_HOUR_VIEW); 169 mInKbMode = savedInstanceState.getBoolean(KEY_IN_KB_MODE); 170 } 171 } 172 173 @Override 174 public View onCreateView(LayoutInflater inflater, ViewGroup container, 175 Bundle savedInstanceState) { 176 getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE); 177 178 View view = inflater.inflate(R.layout.time_picker_dialog, null); 179 KeyboardListener keyboardListener = new KeyboardListener(); 180 view.findViewById(R.id.time_picker_dialog).setOnKeyListener(keyboardListener); 181 182 Resources res = getResources(); 183 mHourPickerDescription = res.getString(R.string.hour_picker_description); 184 mSelectHours = res.getString(R.string.select_hours); 185 mMinutePickerDescription = res.getString(R.string.minute_picker_description); 186 mSelectMinutes = res.getString(R.string.select_minutes); 187 mBlue = res.getColor(R.color.blue); 188 mBlack = res.getColor(R.color.numbers_text_color); 189 190 mHourView = (TextView) view.findViewById(R.id.hours); 191 mHourView.setOnKeyListener(keyboardListener); 192 mHourSpaceView = (TextView) view.findViewById(R.id.hour_space); 193 mMinuteSpaceView = (TextView) view.findViewById(R.id.minutes_space); 194 mMinuteView = (TextView) view.findViewById(R.id.minutes); 195 mMinuteView.setOnKeyListener(keyboardListener); 196 mAmPmTextView = (TextView) view.findViewById(R.id.ampm_label); 197 mAmPmTextView.setOnKeyListener(keyboardListener); 198 String[] amPmTexts = new DateFormatSymbols().getAmPmStrings(); 199 mAmText = amPmTexts[0]; 200 mPmText = amPmTexts[1]; 201 202 mTimePicker = (RadialPickerLayout) view.findViewById(R.id.time_picker); 203 mTimePicker.setOnValueSelectedListener(this); 204 mTimePicker.setOnKeyListener(keyboardListener); 205 mTimePicker.initialize(getActivity(), this, mInitialHourOfDay, mInitialMinute, 206 mIs24HourMode); 207 int currentItemShowing = HOUR_INDEX; 208 if (savedInstanceState != null && 209 savedInstanceState.containsKey(KEY_CURRENT_ITEM_SHOWING)) { 210 currentItemShowing = savedInstanceState.getInt(KEY_CURRENT_ITEM_SHOWING); 211 } 212 setCurrentItemShowing(currentItemShowing, false, true, true); 213 mTimePicker.invalidate(); 214 215 mHapticFeedbackController = new HapticFeedbackController(getActivity()); 216 mHourView.setOnClickListener(new OnClickListener() { 217 @Override 218 public void onClick(View v) { 219 setCurrentItemShowing(HOUR_INDEX, true, false, true); 220 tryVibrate(); 221 } 222 }); 223 mMinuteView.setOnClickListener(new OnClickListener() { 224 @Override 225 public void onClick(View v) { 226 setCurrentItemShowing(MINUTE_INDEX, true, false, true); 227 tryVibrate(); 228 } 229 }); 230 231 mDoneButton = (TextView) view.findViewById(R.id.done_button); 232 mDoneButton.setOnClickListener(new OnClickListener() { 233 @Override 234 public void onClick(View v) { 235 if (mInKbMode && isTypedTimeFullyLegal()) { 236 finishKbMode(false); 237 } else { 238 tryVibrate(); 239 } 240 if (mCallback != null) { 241 mCallback.onTimeSet(mTimePicker, 242 mTimePicker.getHours(), mTimePicker.getMinutes()); 243 } 244 dismiss(); 245 } 246 }); 247 mDoneButton.setOnKeyListener(keyboardListener); 248 249 // Enable or disable the AM/PM view. 250 mAmPmHitspace = view.findViewById(R.id.ampm_hitspace); 251 if (mIs24HourMode) { 252 mAmPmTextView.setVisibility(View.GONE); 253 254 RelativeLayout.LayoutParams paramsSeparator = new RelativeLayout.LayoutParams( 255 LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 256 paramsSeparator.addRule(RelativeLayout.CENTER_IN_PARENT); 257 TextView separatorView = (TextView) view.findViewById(R.id.separator); 258 separatorView.setLayoutParams(paramsSeparator); 259 } else { 260 mAmPmTextView.setVisibility(View.VISIBLE); 261 updateAmPmDisplay(mInitialHourOfDay < 12? AM : PM); 262 mAmPmHitspace.setOnClickListener(new OnClickListener() { 263 @Override 264 public void onClick(View v) { 265 tryVibrate(); 266 int amOrPm = mTimePicker.getIsCurrentlyAmOrPm(); 267 if (amOrPm == AM) { 268 amOrPm = PM; 269 } else if (amOrPm == PM){ 270 amOrPm = AM; 271 } 272 updateAmPmDisplay(amOrPm); 273 mTimePicker.setAmOrPm(amOrPm); 274 } 275 }); 276 } 277 278 mAllowAutoAdvance = true; 279 setHour(mInitialHourOfDay, true); 280 setMinute(mInitialMinute); 281 282 // Set up for keyboard mode. 283 mDoublePlaceholderText = res.getString(R.string.time_placeholder); 284 mDeletedKeyFormat = res.getString(R.string.deleted_key); 285 mPlaceholderText = mDoublePlaceholderText.charAt(0); 286 mAmKeyCode = mPmKeyCode = -1; 287 generateLegalTimesTree(); 288 if (mInKbMode) { 289 mTypedTimes = savedInstanceState.getIntegerArrayList(KEY_TYPED_TIMES); 290 tryStartingKbMode(-1); 291 mHourView.invalidate(); 292 } else if (mTypedTimes == null) { 293 mTypedTimes = new ArrayList<Integer>(); 294 } 295 296 return view; 297 } 298 299 @Override 300 public void onResume() { 301 super.onResume(); 302 mHapticFeedbackController.start(); 303 } 304 305 @Override 306 public void onPause() { 307 super.onPause(); 308 mHapticFeedbackController.stop(); 309 } 310 311 public void tryVibrate() { 312 mHapticFeedbackController.tryVibrate(); 313 } 314 315 private void updateAmPmDisplay(int amOrPm) { 316 if (amOrPm == AM) { 317 mAmPmTextView.setText(mAmText); 318 Utils.tryAccessibilityAnnounce(mTimePicker, mAmText); 319 mAmPmHitspace.setContentDescription(mAmText); 320 } else if (amOrPm == PM){ 321 mAmPmTextView.setText(mPmText); 322 Utils.tryAccessibilityAnnounce(mTimePicker, mPmText); 323 mAmPmHitspace.setContentDescription(mPmText); 324 } else { 325 mAmPmTextView.setText(mDoublePlaceholderText); 326 } 327 } 328 329 @Override 330 public void onSaveInstanceState(Bundle outState) { 331 if (mTimePicker != null) { 332 outState.putInt(KEY_HOUR_OF_DAY, mTimePicker.getHours()); 333 outState.putInt(KEY_MINUTE, mTimePicker.getMinutes()); 334 outState.putBoolean(KEY_IS_24_HOUR_VIEW, mIs24HourMode); 335 outState.putInt(KEY_CURRENT_ITEM_SHOWING, mTimePicker.getCurrentItemShowing()); 336 outState.putBoolean(KEY_IN_KB_MODE, mInKbMode); 337 if (mInKbMode) { 338 outState.putIntegerArrayList(KEY_TYPED_TIMES, mTypedTimes); 339 } 340 } 341 } 342 343 /** 344 * Called by the picker for updating the header display. 345 */ 346 @Override 347 public void onValueSelected(int pickerIndex, int newValue, boolean autoAdvance) { 348 if (pickerIndex == HOUR_INDEX) { 349 setHour(newValue, false); 350 String announcement = String.format("%d", newValue); 351 if (mAllowAutoAdvance && autoAdvance) { 352 setCurrentItemShowing(MINUTE_INDEX, true, true, false); 353 announcement += ". " + mSelectMinutes; 354 } else { 355 mTimePicker.setContentDescription(mHourPickerDescription + ": " + newValue); 356 } 357 358 Utils.tryAccessibilityAnnounce(mTimePicker, announcement); 359 } else if (pickerIndex == MINUTE_INDEX){ 360 setMinute(newValue); 361 mTimePicker.setContentDescription(mMinutePickerDescription + ": " + newValue); 362 } else if (pickerIndex == AMPM_INDEX) { 363 updateAmPmDisplay(newValue); 364 } else if (pickerIndex == ENABLE_PICKER_INDEX) { 365 if (!isTypedTimeFullyLegal()) { 366 mTypedTimes.clear(); 367 } 368 finishKbMode(true); 369 } 370 } 371 372 private void setHour(int value, boolean announce) { 373 String format; 374 if (mIs24HourMode) { 375 format = "%02d"; 376 } else { 377 format = "%d"; 378 value = value % 12; 379 if (value == 0) { 380 value = 12; 381 } 382 } 383 384 CharSequence text = String.format(format, value); 385 mHourView.setText(text); 386 mHourSpaceView.setText(text); 387 if (announce) { 388 Utils.tryAccessibilityAnnounce(mTimePicker, text); 389 } 390 } 391 392 private void setMinute(int value) { 393 if (value == 60) { 394 value = 0; 395 } 396 CharSequence text = String.format(Locale.getDefault(), "%02d", value); 397 Utils.tryAccessibilityAnnounce(mTimePicker, text); 398 mMinuteView.setText(text); 399 mMinuteSpaceView.setText(text); 400 } 401 402 // Show either Hours or Minutes. 403 private void setCurrentItemShowing(int index, boolean animateCircle, boolean delayLabelAnimate, 404 boolean announce) { 405 mTimePicker.setCurrentItemShowing(index, animateCircle); 406 407 TextView labelToAnimate; 408 if (index == HOUR_INDEX) { 409 int hours = mTimePicker.getHours(); 410 if (!mIs24HourMode) { 411 hours = hours % 12; 412 } 413 mTimePicker.setContentDescription(mHourPickerDescription + ": " + hours); 414 if (announce) { 415 Utils.tryAccessibilityAnnounce(mTimePicker, mSelectHours); 416 } 417 labelToAnimate = mHourView; 418 } else { 419 int minutes = mTimePicker.getMinutes(); 420 mTimePicker.setContentDescription(mMinutePickerDescription + ": " + minutes); 421 if (announce) { 422 Utils.tryAccessibilityAnnounce(mTimePicker, mSelectMinutes); 423 } 424 labelToAnimate = mMinuteView; 425 } 426 427 int hourColor = (index == HOUR_INDEX)? mBlue : mBlack; 428 int minuteColor = (index == MINUTE_INDEX)? mBlue : mBlack; 429 mHourView.setTextColor(hourColor); 430 mMinuteView.setTextColor(minuteColor); 431 432 ObjectAnimator pulseAnimator = Utils.getPulseAnimator(labelToAnimate, 0.85f, 1.1f); 433 if (delayLabelAnimate) { 434 pulseAnimator.setStartDelay(PULSE_ANIMATOR_DELAY); 435 } 436 pulseAnimator.start(); 437 } 438 439 /** 440 * For keyboard mode, processes key events. 441 * @param keyCode the pressed key. 442 * @return true if the key was successfully processed, false otherwise. 443 */ 444 private boolean processKeyUp(int keyCode) { 445 if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) { 446 dismiss(); 447 return true; 448 } else if (keyCode == KeyEvent.KEYCODE_TAB) { 449 if(mInKbMode) { 450 if (isTypedTimeFullyLegal()) { 451 finishKbMode(true); 452 } 453 return true; 454 } 455 } else if (keyCode == KeyEvent.KEYCODE_ENTER) { 456 if (mInKbMode) { 457 if (!isTypedTimeFullyLegal()) { 458 return true; 459 } 460 finishKbMode(false); 461 } 462 if (mCallback != null) { 463 mCallback.onTimeSet(mTimePicker, 464 mTimePicker.getHours(), mTimePicker.getMinutes()); 465 } 466 dismiss(); 467 return true; 468 } else if (keyCode == KeyEvent.KEYCODE_DEL) { 469 if (mInKbMode) { 470 if (!mTypedTimes.isEmpty()) { 471 int deleted = deleteLastTypedKey(); 472 String deletedKeyStr; 473 if (deleted == getAmOrPmKeyCode(AM)) { 474 deletedKeyStr = mAmText; 475 } else if (deleted == getAmOrPmKeyCode(PM)) { 476 deletedKeyStr = mPmText; 477 } else { 478 deletedKeyStr = String.format("%d", getValFromKeyCode(deleted)); 479 } 480 Utils.tryAccessibilityAnnounce(mTimePicker, 481 String.format(mDeletedKeyFormat, deletedKeyStr)); 482 updateDisplay(true); 483 } 484 } 485 } else if (keyCode == KeyEvent.KEYCODE_0 || keyCode == KeyEvent.KEYCODE_1 486 || keyCode == KeyEvent.KEYCODE_2 || keyCode == KeyEvent.KEYCODE_3 487 || keyCode == KeyEvent.KEYCODE_4 || keyCode == KeyEvent.KEYCODE_5 488 || keyCode == KeyEvent.KEYCODE_6 || keyCode == KeyEvent.KEYCODE_7 489 || keyCode == KeyEvent.KEYCODE_8 || keyCode == KeyEvent.KEYCODE_9 490 || (!mIs24HourMode && 491 (keyCode == getAmOrPmKeyCode(AM) || keyCode == getAmOrPmKeyCode(PM)))) { 492 if (!mInKbMode) { 493 if (mTimePicker == null) { 494 // Something's wrong, because time picker should definitely not be null. 495 Log.e(TAG, "Unable to initiate keyboard mode, TimePicker was null."); 496 return true; 497 } 498 mTypedTimes.clear(); 499 tryStartingKbMode(keyCode); 500 return true; 501 } 502 // We're already in keyboard mode. 503 if (addKeyIfLegal(keyCode)) { 504 updateDisplay(false); 505 } 506 return true; 507 } 508 return false; 509 } 510 511 /** 512 * Try to start keyboard mode with the specified key, as long as the timepicker is not in the 513 * middle of a touch-event. 514 * @param keyCode The key to use as the first press. Keyboard mode will not be started if the 515 * key is not legal to start with. Or, pass in -1 to get into keyboard mode without a starting 516 * key. 517 */ 518 private void tryStartingKbMode(int keyCode) { 519 if (mTimePicker.trySettingInputEnabled(false) && 520 (keyCode == -1 || addKeyIfLegal(keyCode))) { 521 mInKbMode = true; 522 mDoneButton.setEnabled(false); 523 updateDisplay(false); 524 } 525 } 526 527 private boolean addKeyIfLegal(int keyCode) { 528 // If we're in 24hour mode, we'll need to check if the input is full. If in AM/PM mode, 529 // we'll need to see if AM/PM have been typed. 530 if ((mIs24HourMode && mTypedTimes.size() == 4) || 531 (!mIs24HourMode && isTypedTimeFullyLegal())) { 532 return false; 533 } 534 535 mTypedTimes.add(keyCode); 536 if (!isTypedTimeLegalSoFar()) { 537 deleteLastTypedKey(); 538 return false; 539 } 540 541 int val = getValFromKeyCode(keyCode); 542 Utils.tryAccessibilityAnnounce(mTimePicker, String.format("%d", val)); 543 // Automatically fill in 0's if AM or PM was legally entered. 544 if (isTypedTimeFullyLegal()) { 545 if (!mIs24HourMode && mTypedTimes.size() <= 3) { 546 mTypedTimes.add(mTypedTimes.size() - 1, KeyEvent.KEYCODE_0); 547 mTypedTimes.add(mTypedTimes.size() - 1, KeyEvent.KEYCODE_0); 548 } 549 mDoneButton.setEnabled(true); 550 } 551 552 return true; 553 } 554 555 /** 556 * Traverse the tree to see if the keys that have been typed so far are legal as is, 557 * or may become legal as more keys are typed (excluding backspace). 558 */ 559 private boolean isTypedTimeLegalSoFar() { 560 Node node = mLegalTimesTree; 561 for (int keyCode : mTypedTimes) { 562 node = node.canReach(keyCode); 563 if (node == null) { 564 return false; 565 } 566 } 567 return true; 568 } 569 570 /** 571 * Check if the time that has been typed so far is completely legal, as is. 572 */ 573 private boolean isTypedTimeFullyLegal() { 574 if (mIs24HourMode) { 575 // For 24-hour mode, the time is legal if the hours and minutes are each legal. Note: 576 // getEnteredTime() will ONLY call isTypedTimeFullyLegal() when NOT in 24hour mode. 577 int[] values = getEnteredTime(null); 578 return (values[0] >= 0 && values[1] >= 0 && values[1] < 60); 579 } else { 580 // For AM/PM mode, the time is legal if it contains an AM or PM, as those can only be 581 // legally added at specific times based on the tree's algorithm. 582 return (mTypedTimes.contains(getAmOrPmKeyCode(AM)) || 583 mTypedTimes.contains(getAmOrPmKeyCode(PM))); 584 } 585 } 586 587 private int deleteLastTypedKey() { 588 int deleted = mTypedTimes.remove(mTypedTimes.size() - 1); 589 if (!isTypedTimeFullyLegal()) { 590 mDoneButton.setEnabled(false); 591 } 592 return deleted; 593 } 594 595 /** 596 * Get out of keyboard mode. If there is nothing in typedTimes, revert to TimePicker's time. 597 * @param changeDisplays If true, update the displays with the relevant time. 598 */ 599 private void finishKbMode(boolean updateDisplays) { 600 mInKbMode = false; 601 if (!mTypedTimes.isEmpty()) { 602 int values[] = getEnteredTime(null); 603 mTimePicker.setTime(values[0], values[1]); 604 if (!mIs24HourMode) { 605 mTimePicker.setAmOrPm(values[2]); 606 } 607 mTypedTimes.clear(); 608 } 609 if (updateDisplays) { 610 updateDisplay(false); 611 mTimePicker.trySettingInputEnabled(true); 612 } 613 } 614 615 /** 616 * Update the hours, minutes, and AM/PM displays with the typed times. If the typedTimes is 617 * empty, either show an empty display (filled with the placeholder text), or update from the 618 * timepicker's values. 619 * @param allowEmptyDisplay if true, then if the typedTimes is empty, use the placeholder text. 620 * Otherwise, revert to the timepicker's values. 621 */ 622 private void updateDisplay(boolean allowEmptyDisplay) { 623 if (!allowEmptyDisplay && mTypedTimes.isEmpty()) { 624 int hour = mTimePicker.getHours(); 625 int minute = mTimePicker.getMinutes(); 626 setHour(hour, true); 627 setMinute(minute); 628 if (!mIs24HourMode) { 629 updateAmPmDisplay(hour < 12? AM : PM); 630 } 631 setCurrentItemShowing(mTimePicker.getCurrentItemShowing(), true, true, true); 632 mDoneButton.setEnabled(true); 633 } else { 634 Boolean[] enteredZeros = {false, false}; 635 int[] values = getEnteredTime(enteredZeros); 636 String hourFormat = enteredZeros[0]? "%02d" : "%2d"; 637 String minuteFormat = (enteredZeros[1])? "%02d" : "%2d"; 638 String hourStr = (values[0] == -1)? mDoublePlaceholderText : 639 String.format(hourFormat, values[0]).replace(' ', mPlaceholderText); 640 String minuteStr = (values[1] == -1)? mDoublePlaceholderText : 641 String.format(minuteFormat, values[1]).replace(' ', mPlaceholderText); 642 mHourView.setText(hourStr); 643 mHourSpaceView.setText(hourStr); 644 mHourView.setTextColor(mBlack); 645 mMinuteView.setText(minuteStr); 646 mMinuteSpaceView.setText(minuteStr); 647 mMinuteView.setTextColor(mBlack); 648 if (!mIs24HourMode) { 649 updateAmPmDisplay(values[2]); 650 } 651 } 652 } 653 654 private int getValFromKeyCode(int keyCode) { 655 switch (keyCode) { 656 case KeyEvent.KEYCODE_0: 657 return 0; 658 case KeyEvent.KEYCODE_1: 659 return 1; 660 case KeyEvent.KEYCODE_2: 661 return 2; 662 case KeyEvent.KEYCODE_3: 663 return 3; 664 case KeyEvent.KEYCODE_4: 665 return 4; 666 case KeyEvent.KEYCODE_5: 667 return 5; 668 case KeyEvent.KEYCODE_6: 669 return 6; 670 case KeyEvent.KEYCODE_7: 671 return 7; 672 case KeyEvent.KEYCODE_8: 673 return 8; 674 case KeyEvent.KEYCODE_9: 675 return 9; 676 default: 677 return -1; 678 } 679 } 680 681 /** 682 * Get the currently-entered time, as integer values of the hours and minutes typed. 683 * @param enteredZeros A size-2 boolean array, which the caller should initialize, and which 684 * may then be used for the caller to know whether zeros had been explicitly entered as either 685 * hours of minutes. This is helpful for deciding whether to show the dashes, or actual 0's. 686 * @return A size-3 int array. The first value will be the hours, the second value will be the 687 * minutes, and the third will be either TimePickerDialog.AM or TimePickerDialog.PM. 688 */ 689 private int[] getEnteredTime(Boolean[] enteredZeros) { 690 int amOrPm = -1; 691 int startIndex = 1; 692 if (!mIs24HourMode && isTypedTimeFullyLegal()) { 693 int keyCode = mTypedTimes.get(mTypedTimes.size() - 1); 694 if (keyCode == getAmOrPmKeyCode(AM)) { 695 amOrPm = AM; 696 } else if (keyCode == getAmOrPmKeyCode(PM)){ 697 amOrPm = PM; 698 } 699 startIndex = 2; 700 } 701 int minute = -1; 702 int hour = -1; 703 for (int i = startIndex; i <= mTypedTimes.size(); i++) { 704 int val = getValFromKeyCode(mTypedTimes.get(mTypedTimes.size() - i)); 705 if (i == startIndex) { 706 minute = val; 707 } else if (i == startIndex+1) { 708 minute += 10*val; 709 if (enteredZeros != null && val == 0) { 710 enteredZeros[1] = true; 711 } 712 } else if (i == startIndex+2) { 713 hour = val; 714 } else if (i == startIndex+3) { 715 hour += 10*val; 716 if (enteredZeros != null && val == 0) { 717 enteredZeros[0] = true; 718 } 719 } 720 } 721 722 int[] ret = {hour, minute, amOrPm}; 723 return ret; 724 } 725 726 /** 727 * Get the keycode value for AM and PM in the current language. 728 */ 729 private int getAmOrPmKeyCode(int amOrPm) { 730 // Cache the codes. 731 if (mAmKeyCode == -1 || mPmKeyCode == -1) { 732 // Find the first character in the AM/PM text that is unique. 733 KeyCharacterMap kcm = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 734 char amChar; 735 char pmChar; 736 for (int i = 0; i < Math.max(mAmText.length(), mPmText.length()); i++) { 737 amChar = mAmText.toLowerCase(Locale.getDefault()).charAt(i); 738 pmChar = mPmText.toLowerCase(Locale.getDefault()).charAt(i); 739 if (amChar != pmChar) { 740 KeyEvent[] events = kcm.getEvents(new char[]{amChar, pmChar}); 741 // There should be 4 events: a down and up for both AM and PM. 742 if (events != null && events.length == 4) { 743 mAmKeyCode = events[0].getKeyCode(); 744 mPmKeyCode = events[2].getKeyCode(); 745 } else { 746 Log.e(TAG, "Unable to find keycodes for AM and PM."); 747 } 748 break; 749 } 750 } 751 } 752 if (amOrPm == AM) { 753 return mAmKeyCode; 754 } else if (amOrPm == PM) { 755 return mPmKeyCode; 756 } 757 758 return -1; 759 } 760 761 /** 762 * Create a tree for deciding what keys can legally be typed. 763 */ 764 private void generateLegalTimesTree() { 765 // Create a quick cache of numbers to their keycodes. 766 int k0 = KeyEvent.KEYCODE_0; 767 int k1 = KeyEvent.KEYCODE_1; 768 int k2 = KeyEvent.KEYCODE_2; 769 int k3 = KeyEvent.KEYCODE_3; 770 int k4 = KeyEvent.KEYCODE_4; 771 int k5 = KeyEvent.KEYCODE_5; 772 int k6 = KeyEvent.KEYCODE_6; 773 int k7 = KeyEvent.KEYCODE_7; 774 int k8 = KeyEvent.KEYCODE_8; 775 int k9 = KeyEvent.KEYCODE_9; 776 777 // The root of the tree doesn't contain any numbers. 778 mLegalTimesTree = new Node(); 779 if (mIs24HourMode) { 780 // We'll be re-using these nodes, so we'll save them. 781 Node minuteFirstDigit = new Node(k0, k1, k2, k3, k4, k5); 782 Node minuteSecondDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 783 // The first digit must be followed by the second digit. 784 minuteFirstDigit.addChild(minuteSecondDigit); 785 786 // The first digit may be 0-1. 787 Node firstDigit = new Node(k0, k1); 788 mLegalTimesTree.addChild(firstDigit); 789 790 // When the first digit is 0-1, the second digit may be 0-5. 791 Node secondDigit = new Node(k0, k1, k2, k3, k4, k5); 792 firstDigit.addChild(secondDigit); 793 // We may now be followed by the first minute digit. E.g. 00:09, 15:58. 794 secondDigit.addChild(minuteFirstDigit); 795 796 // When the first digit is 0-1, and the second digit is 0-5, the third digit may be 6-9. 797 Node thirdDigit = new Node(k6, k7, k8, k9); 798 // The time must now be finished. E.g. 0:55, 1:08. 799 secondDigit.addChild(thirdDigit); 800 801 // When the first digit is 0-1, the second digit may be 6-9. 802 secondDigit = new Node(k6, k7, k8, k9); 803 firstDigit.addChild(secondDigit); 804 // We must now be followed by the first minute digit. E.g. 06:50, 18:20. 805 secondDigit.addChild(minuteFirstDigit); 806 807 // The first digit may be 2. 808 firstDigit = new Node(k2); 809 mLegalTimesTree.addChild(firstDigit); 810 811 // When the first digit is 2, the second digit may be 0-3. 812 secondDigit = new Node(k0, k1, k2, k3); 813 firstDigit.addChild(secondDigit); 814 // We must now be followed by the first minute digit. E.g. 20:50, 23:09. 815 secondDigit.addChild(minuteFirstDigit); 816 817 // When the first digit is 2, the second digit may be 4-5. 818 secondDigit = new Node(k4, k5); 819 firstDigit.addChild(secondDigit); 820 // We must now be followd by the last minute digit. E.g. 2:40, 2:53. 821 secondDigit.addChild(minuteSecondDigit); 822 823 // The first digit may be 3-9. 824 firstDigit = new Node(k3, k4, k5, k6, k7, k8, k9); 825 mLegalTimesTree.addChild(firstDigit); 826 // We must now be followed by the first minute digit. E.g. 3:57, 8:12. 827 firstDigit.addChild(minuteFirstDigit); 828 } else { 829 // We'll need to use the AM/PM node a lot. 830 // Set up AM and PM to respond to "a" and "p". 831 Node ampm = new Node(getAmOrPmKeyCode(AM), getAmOrPmKeyCode(PM)); 832 833 // The first hour digit may be 1. 834 Node firstDigit = new Node(k1); 835 mLegalTimesTree.addChild(firstDigit); 836 // We'll allow quick input of on-the-hour times. E.g. 1pm. 837 firstDigit.addChild(ampm); 838 839 // When the first digit is 1, the second digit may be 0-2. 840 Node secondDigit = new Node(k0, k1, k2); 841 firstDigit.addChild(secondDigit); 842 // Also for quick input of on-the-hour times. E.g. 10pm, 12am. 843 secondDigit.addChild(ampm); 844 845 // When the first digit is 1, and the second digit is 0-2, the third digit may be 0-5. 846 Node thirdDigit = new Node(k0, k1, k2, k3, k4, k5); 847 secondDigit.addChild(thirdDigit); 848 // The time may be finished now. E.g. 1:02pm, 1:25am. 849 thirdDigit.addChild(ampm); 850 851 // When the first digit is 1, the second digit is 0-2, and the third digit is 0-5, 852 // the fourth digit may be 0-9. 853 Node fourthDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 854 thirdDigit.addChild(fourthDigit); 855 // The time must be finished now. E.g. 10:49am, 12:40pm. 856 fourthDigit.addChild(ampm); 857 858 // When the first digit is 1, and the second digit is 0-2, the third digit may be 6-9. 859 thirdDigit = new Node(k6, k7, k8, k9); 860 secondDigit.addChild(thirdDigit); 861 // The time must be finished now. E.g. 1:08am, 1:26pm. 862 thirdDigit.addChild(ampm); 863 864 // When the first digit is 1, the second digit may be 3-5. 865 secondDigit = new Node(k3, k4, k5); 866 firstDigit.addChild(secondDigit); 867 868 // When the first digit is 1, and the second digit is 3-5, the third digit may be 0-9. 869 thirdDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 870 secondDigit.addChild(thirdDigit); 871 // The time must be finished now. E.g. 1:39am, 1:50pm. 872 thirdDigit.addChild(ampm); 873 874 // The hour digit may be 2-9. 875 firstDigit = new Node(k2, k3, k4, k5, k6, k7, k8, k9); 876 mLegalTimesTree.addChild(firstDigit); 877 // We'll allow quick input of on-the-hour-times. E.g. 2am, 5pm. 878 firstDigit.addChild(ampm); 879 880 // When the first digit is 2-9, the second digit may be 0-5. 881 secondDigit = new Node(k0, k1, k2, k3, k4, k5); 882 firstDigit.addChild(secondDigit); 883 884 // When the first digit is 2-9, and the second digit is 0-5, the third digit may be 0-9. 885 thirdDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 886 secondDigit.addChild(thirdDigit); 887 // The time must be finished now. E.g. 2:57am, 9:30pm. 888 thirdDigit.addChild(ampm); 889 } 890 } 891 892 /** 893 * Simple node class to be used for traversal to check for legal times. 894 * mLegalKeys represents the keys that can be typed to get to the node. 895 * mChildren are the children that can be reached from this node. 896 */ 897 private class Node { 898 private int[] mLegalKeys; 899 private ArrayList<Node> mChildren; 900 901 public Node(int... legalKeys) { 902 mLegalKeys = legalKeys; 903 mChildren = new ArrayList<Node>(); 904 } 905 906 public void addChild(Node child) { 907 mChildren.add(child); 908 } 909 910 public boolean containsKey(int key) { 911 for (int i = 0; i < mLegalKeys.length; i++) { 912 if (mLegalKeys[i] == key) { 913 return true; 914 } 915 } 916 return false; 917 } 918 919 public Node canReach(int key) { 920 if (mChildren == null) { 921 return null; 922 } 923 for (Node child : mChildren) { 924 if (child.containsKey(key)) { 925 return child; 926 } 927 } 928 return null; 929 } 930 } 931 932 private class KeyboardListener implements OnKeyListener { 933 @Override 934 public boolean onKey(View v, int keyCode, KeyEvent event) { 935 if (event.getAction() == KeyEvent.ACTION_UP) { 936 return processKeyUp(keyCode); 937 } 938 return false; 939 } 940 } 941} 942