Configuration.java revision e2515eebf42c763c0a2d9f873a153711778cfc17
1/* 2 * Copyright (C) 2008 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 android.content.res; 18 19import android.content.pm.ActivityInfo; 20import android.os.Parcel; 21import android.os.Parcelable; 22 23import java.util.Locale; 24 25/** 26 * This class describes all device configuration information that can 27 * impact the resources the application retrieves. This includes both 28 * user-specified configuration options (locale and scaling) as well 29 * as device configurations (such as input modes, screen size and screen orientation). 30 * <p>You can acquire this object from {@link Resources}, using {@link 31 * Resources#getConfiguration}. Thus, from an activity, you can get it by chaining the request 32 * with {@link android.app.Activity#getResources}:</p> 33 * <pre>Configuration config = getResources().getConfiguration();</pre> 34 */ 35public final class Configuration implements Parcelable, Comparable<Configuration> { 36 /** 37 * Current user preference for the scaling factor for fonts, relative 38 * to the base density scaling. 39 */ 40 public float fontScale; 41 42 /** 43 * IMSI MCC (Mobile Country Code). 0 if undefined. 44 */ 45 public int mcc; 46 47 /** 48 * IMSI MNC (Mobile Network Code). 0 if undefined. 49 */ 50 public int mnc; 51 52 /** 53 * Current user preference for the locale. 54 */ 55 public Locale locale; 56 57 /** 58 * Locale should persist on setting. This is hidden because it is really 59 * questionable whether this is the right way to expose the functionality. 60 * @hide 61 */ 62 public boolean userSetLocale; 63 64 /** Constant for {@link #screenLayout}: bits that encode the size. */ 65 public static final int SCREENLAYOUT_SIZE_MASK = 0x0f; 66 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 67 * value indicating that no size has been set. */ 68 public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00; 69 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 70 * value indicating the screen is at least approximately 320x426 dp units. 71 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 72 * Multiple Screens</a> for more information. */ 73 public static final int SCREENLAYOUT_SIZE_SMALL = 0x01; 74 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 75 * value indicating the screen is at least approximately 320x470 dp units. 76 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 77 * Multiple Screens</a> for more information. */ 78 public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02; 79 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 80 * value indicating the screen is at least approximately 480x640 dp units. 81 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 82 * Multiple Screens</a> for more information. */ 83 public static final int SCREENLAYOUT_SIZE_LARGE = 0x03; 84 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 85 * value indicating the screen is at least approximately 720x960 dp units. 86 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 87 * Multiple Screens</a> for more information.*/ 88 public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04; 89 90 public static final int SCREENLAYOUT_LONG_MASK = 0x30; 91 public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00; 92 public static final int SCREENLAYOUT_LONG_NO = 0x10; 93 public static final int SCREENLAYOUT_LONG_YES = 0x20; 94 95 /** 96 * Special flag we generate to indicate that the screen layout requires 97 * us to use a compatibility mode for apps that are not modern layout 98 * aware. 99 * @hide 100 */ 101 public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000; 102 103 /** 104 * Bit mask of overall layout of the screen. Currently there are two 105 * fields: 106 * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size 107 * of the screen. They may be one of 108 * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL}, 109 * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}. 110 * 111 * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen 112 * is wider/taller than normal. They may be one of 113 * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}. 114 * 115 * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 116 * Multiple Screens</a> for more information. 117 */ 118 public int screenLayout; 119 120 /** 121 * Check if the Configuration's current {@link #screenLayout} is at 122 * least the given size. 123 * 124 * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL}, 125 * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or 126 * {@link #SCREENLAYOUT_SIZE_XLARGE}. 127 * @return Returns true if the current screen layout size is at least 128 * the given size. 129 */ 130 public boolean isLayoutSizeAtLeast(int size) { 131 int cur = screenLayout&SCREENLAYOUT_SIZE_MASK; 132 if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false; 133 return cur >= size; 134 } 135 136 public static final int TOUCHSCREEN_UNDEFINED = 0; 137 public static final int TOUCHSCREEN_NOTOUCH = 1; 138 public static final int TOUCHSCREEN_STYLUS = 2; 139 public static final int TOUCHSCREEN_FINGER = 3; 140 141 /** 142 * The kind of touch screen attached to the device. 143 * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_STYLUS}, 144 * {@link #TOUCHSCREEN_FINGER}. 145 */ 146 public int touchscreen; 147 148 public static final int KEYBOARD_UNDEFINED = 0; 149 public static final int KEYBOARD_NOKEYS = 1; 150 public static final int KEYBOARD_QWERTY = 2; 151 public static final int KEYBOARD_12KEY = 3; 152 153 /** 154 * The kind of keyboard attached to the device. 155 * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY}, 156 * {@link #KEYBOARD_12KEY}. 157 */ 158 public int keyboard; 159 160 public static final int KEYBOARDHIDDEN_UNDEFINED = 0; 161 public static final int KEYBOARDHIDDEN_NO = 1; 162 public static final int KEYBOARDHIDDEN_YES = 2; 163 /** Constant matching actual resource implementation. {@hide} */ 164 public static final int KEYBOARDHIDDEN_SOFT = 3; 165 166 /** 167 * A flag indicating whether any keyboard is available. Unlike 168 * {@link #hardKeyboardHidden}, this also takes into account a soft 169 * keyboard, so if the hard keyboard is hidden but there is soft 170 * keyboard available, it will be set to NO. Value is one of: 171 * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}. 172 */ 173 public int keyboardHidden; 174 175 public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0; 176 public static final int HARDKEYBOARDHIDDEN_NO = 1; 177 public static final int HARDKEYBOARDHIDDEN_YES = 2; 178 179 /** 180 * A flag indicating whether the hard keyboard has been hidden. This will 181 * be set on a device with a mechanism to hide the keyboard from the 182 * user, when that mechanism is closed. One of: 183 * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}. 184 */ 185 public int hardKeyboardHidden; 186 187 public static final int NAVIGATION_UNDEFINED = 0; 188 public static final int NAVIGATION_NONAV = 1; 189 public static final int NAVIGATION_DPAD = 2; 190 public static final int NAVIGATION_TRACKBALL = 3; 191 public static final int NAVIGATION_WHEEL = 4; 192 193 /** 194 * The kind of navigation method available on the device. 195 * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD}, 196 * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}. 197 */ 198 public int navigation; 199 200 public static final int NAVIGATIONHIDDEN_UNDEFINED = 0; 201 public static final int NAVIGATIONHIDDEN_NO = 1; 202 public static final int NAVIGATIONHIDDEN_YES = 2; 203 204 /** 205 * A flag indicating whether any 5-way or DPAD navigation available. 206 * This will be set on a device with a mechanism to hide the navigation 207 * controls from the user, when that mechanism is closed. One of: 208 * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}. 209 */ 210 public int navigationHidden; 211 212 public static final int ORIENTATION_UNDEFINED = 0; 213 public static final int ORIENTATION_PORTRAIT = 1; 214 public static final int ORIENTATION_LANDSCAPE = 2; 215 public static final int ORIENTATION_SQUARE = 3; 216 217 /** 218 * Overall orientation of the screen. May be one of 219 * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}, 220 * or {@link #ORIENTATION_SQUARE}. 221 */ 222 public int orientation; 223 224 public static final int UI_MODE_TYPE_MASK = 0x0f; 225 public static final int UI_MODE_TYPE_UNDEFINED = 0x00; 226 public static final int UI_MODE_TYPE_NORMAL = 0x01; 227 public static final int UI_MODE_TYPE_DESK = 0x02; 228 public static final int UI_MODE_TYPE_CAR = 0x03; 229 230 public static final int UI_MODE_NIGHT_MASK = 0x30; 231 public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; 232 public static final int UI_MODE_NIGHT_NO = 0x10; 233 public static final int UI_MODE_NIGHT_YES = 0x20; 234 235 /** 236 * Bit mask of the ui mode. Currently there are two fields: 237 * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the 238 * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, 239 * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, 240 * or {@link #UI_MODE_TYPE_CAR}. 241 * 242 * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen 243 * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, 244 * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. 245 */ 246 public int uiMode; 247 248 /** 249 * @hide Internal book-keeping. 250 */ 251 public int seq; 252 253 /** 254 * Construct an invalid Configuration. You must call {@link #setToDefaults} 255 * for this object to be valid. {@more} 256 */ 257 public Configuration() { 258 setToDefaults(); 259 } 260 261 /** 262 * Makes a deep copy suitable for modification. 263 */ 264 public Configuration(Configuration o) { 265 setTo(o); 266 } 267 268 public void setTo(Configuration o) { 269 fontScale = o.fontScale; 270 mcc = o.mcc; 271 mnc = o.mnc; 272 if (o.locale != null) { 273 locale = (Locale) o.locale.clone(); 274 } 275 userSetLocale = o.userSetLocale; 276 touchscreen = o.touchscreen; 277 keyboard = o.keyboard; 278 keyboardHidden = o.keyboardHidden; 279 hardKeyboardHidden = o.hardKeyboardHidden; 280 navigation = o.navigation; 281 navigationHidden = o.navigationHidden; 282 orientation = o.orientation; 283 screenLayout = o.screenLayout; 284 uiMode = o.uiMode; 285 seq = o.seq; 286 } 287 288 public String toString() { 289 StringBuilder sb = new StringBuilder(128); 290 sb.append("{ scale="); 291 sb.append(fontScale); 292 sb.append(" imsi="); 293 sb.append(mcc); 294 sb.append("/"); 295 sb.append(mnc); 296 sb.append(" loc="); 297 sb.append(locale); 298 sb.append(" touch="); 299 sb.append(touchscreen); 300 sb.append(" keys="); 301 sb.append(keyboard); 302 sb.append("/"); 303 sb.append(keyboardHidden); 304 sb.append("/"); 305 sb.append(hardKeyboardHidden); 306 sb.append(" nav="); 307 sb.append(navigation); 308 sb.append("/"); 309 sb.append(navigationHidden); 310 sb.append(" orien="); 311 switch(orientation) { 312 case ORIENTATION_LANDSCAPE: 313 sb.append("L"); break; 314 case ORIENTATION_PORTRAIT: 315 sb.append("P"); break; 316 default: 317 sb.append(orientation); 318 } 319 sb.append(" layout=0x"); 320 sb.append(java.lang.Integer.toHexString(screenLayout)); 321 sb.append(" uiMode=0x"); 322 sb.append(java.lang.Integer.toHexString(uiMode)); 323 if (seq != 0) { 324 sb.append(" seq="); 325 sb.append(seq); 326 } 327 sb.append('}'); 328 return sb.toString(); 329 } 330 331 /** 332 * Set this object to the system defaults. 333 */ 334 public void setToDefaults() { 335 fontScale = 1; 336 mcc = mnc = 0; 337 locale = null; 338 userSetLocale = false; 339 touchscreen = TOUCHSCREEN_UNDEFINED; 340 keyboard = KEYBOARD_UNDEFINED; 341 keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; 342 hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; 343 navigation = NAVIGATION_UNDEFINED; 344 navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; 345 orientation = ORIENTATION_UNDEFINED; 346 screenLayout = SCREENLAYOUT_SIZE_UNDEFINED; 347 uiMode = UI_MODE_TYPE_UNDEFINED; 348 seq = 0; 349 } 350 351 /** {@hide} */ 352 @Deprecated public void makeDefault() { 353 setToDefaults(); 354 } 355 356 /** 357 * Copy the fields from delta into this Configuration object, keeping 358 * track of which ones have changed. Any undefined fields in 359 * <var>delta</var> are ignored and not copied in to the current 360 * Configuration. 361 * @return Returns a bit mask of the changed fields, as per 362 * {@link #diff}. 363 */ 364 public int updateFrom(Configuration delta) { 365 int changed = 0; 366 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 367 changed |= ActivityInfo.CONFIG_FONT_SCALE; 368 fontScale = delta.fontScale; 369 } 370 if (delta.mcc != 0 && mcc != delta.mcc) { 371 changed |= ActivityInfo.CONFIG_MCC; 372 mcc = delta.mcc; 373 } 374 if (delta.mnc != 0 && mnc != delta.mnc) { 375 changed |= ActivityInfo.CONFIG_MNC; 376 mnc = delta.mnc; 377 } 378 if (delta.locale != null 379 && (locale == null || !locale.equals(delta.locale))) { 380 changed |= ActivityInfo.CONFIG_LOCALE; 381 locale = delta.locale != null 382 ? (Locale) delta.locale.clone() : null; 383 } 384 if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) 385 { 386 userSetLocale = true; 387 changed |= ActivityInfo.CONFIG_LOCALE; 388 } 389 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 390 && touchscreen != delta.touchscreen) { 391 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 392 touchscreen = delta.touchscreen; 393 } 394 if (delta.keyboard != KEYBOARD_UNDEFINED 395 && keyboard != delta.keyboard) { 396 changed |= ActivityInfo.CONFIG_KEYBOARD; 397 keyboard = delta.keyboard; 398 } 399 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 400 && keyboardHidden != delta.keyboardHidden) { 401 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 402 keyboardHidden = delta.keyboardHidden; 403 } 404 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 405 && hardKeyboardHidden != delta.hardKeyboardHidden) { 406 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 407 hardKeyboardHidden = delta.hardKeyboardHidden; 408 } 409 if (delta.navigation != NAVIGATION_UNDEFINED 410 && navigation != delta.navigation) { 411 changed |= ActivityInfo.CONFIG_NAVIGATION; 412 navigation = delta.navigation; 413 } 414 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 415 && navigationHidden != delta.navigationHidden) { 416 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 417 navigationHidden = delta.navigationHidden; 418 } 419 if (delta.orientation != ORIENTATION_UNDEFINED 420 && orientation != delta.orientation) { 421 changed |= ActivityInfo.CONFIG_ORIENTATION; 422 orientation = delta.orientation; 423 } 424 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 425 && screenLayout != delta.screenLayout) { 426 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 427 screenLayout = delta.screenLayout; 428 } 429 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 430 && uiMode != delta.uiMode) { 431 changed |= ActivityInfo.CONFIG_UI_MODE; 432 if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { 433 uiMode = (uiMode&~UI_MODE_TYPE_MASK) 434 | (delta.uiMode&UI_MODE_TYPE_MASK); 435 } 436 if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { 437 uiMode = (uiMode&~UI_MODE_NIGHT_MASK) 438 | (delta.uiMode&UI_MODE_NIGHT_MASK); 439 } 440 } 441 442 if (delta.seq != 0) { 443 seq = delta.seq; 444 } 445 446 return changed; 447 } 448 449 /** 450 * Return a bit mask of the differences between this Configuration 451 * object and the given one. Does not change the values of either. Any 452 * undefined fields in <var>delta</var> are ignored. 453 * @return Returns a bit mask indicating which configuration 454 * values has changed, containing any combination of 455 * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE 456 * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, 457 * {@link android.content.pm.ActivityInfo#CONFIG_MCC 458 * PackageManager.ActivityInfo.CONFIG_MCC}, 459 * {@link android.content.pm.ActivityInfo#CONFIG_MNC 460 * PackageManager.ActivityInfo.CONFIG_MNC}, 461 * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE 462 * PackageManager.ActivityInfo.CONFIG_LOCALE}, 463 * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN 464 * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, 465 * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD 466 * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, 467 * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION 468 * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, 469 * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION 470 * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, or 471 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT 472 * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}. 473 */ 474 public int diff(Configuration delta) { 475 int changed = 0; 476 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 477 changed |= ActivityInfo.CONFIG_FONT_SCALE; 478 } 479 if (delta.mcc != 0 && mcc != delta.mcc) { 480 changed |= ActivityInfo.CONFIG_MCC; 481 } 482 if (delta.mnc != 0 && mnc != delta.mnc) { 483 changed |= ActivityInfo.CONFIG_MNC; 484 } 485 if (delta.locale != null 486 && (locale == null || !locale.equals(delta.locale))) { 487 changed |= ActivityInfo.CONFIG_LOCALE; 488 } 489 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 490 && touchscreen != delta.touchscreen) { 491 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 492 } 493 if (delta.keyboard != KEYBOARD_UNDEFINED 494 && keyboard != delta.keyboard) { 495 changed |= ActivityInfo.CONFIG_KEYBOARD; 496 } 497 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 498 && keyboardHidden != delta.keyboardHidden) { 499 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 500 } 501 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 502 && hardKeyboardHidden != delta.hardKeyboardHidden) { 503 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 504 } 505 if (delta.navigation != NAVIGATION_UNDEFINED 506 && navigation != delta.navigation) { 507 changed |= ActivityInfo.CONFIG_NAVIGATION; 508 } 509 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 510 && navigationHidden != delta.navigationHidden) { 511 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 512 } 513 if (delta.orientation != ORIENTATION_UNDEFINED 514 && orientation != delta.orientation) { 515 changed |= ActivityInfo.CONFIG_ORIENTATION; 516 } 517 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 518 && screenLayout != delta.screenLayout) { 519 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 520 } 521 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 522 && uiMode != delta.uiMode) { 523 changed |= ActivityInfo.CONFIG_UI_MODE; 524 } 525 526 return changed; 527 } 528 529 /** 530 * Determine if a new resource needs to be loaded from the bit set of 531 * configuration changes returned by {@link #updateFrom(Configuration)}. 532 * 533 * @param configChanges The mask of changes configurations as returned by 534 * {@link #updateFrom(Configuration)}. 535 * @param interestingChanges The configuration changes that the resource 536 * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. 537 * 538 * @return Return true if the resource needs to be loaded, else false. 539 */ 540 public static boolean needNewResources(int configChanges, int interestingChanges) { 541 return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; 542 } 543 544 /** 545 * @hide Return true if the sequence of 'other' is better than this. Assumes 546 * that 'this' is your current sequence and 'other' is a new one you have 547 * received some how and want to compare with what you have. 548 */ 549 public boolean isOtherSeqNewer(Configuration other) { 550 if (other == null) { 551 // Sanity check. 552 return false; 553 } 554 if (other.seq == 0) { 555 // If the other sequence is not specified, then we must assume 556 // it is newer since we don't know any better. 557 return true; 558 } 559 if (seq == 0) { 560 // If this sequence is not specified, then we also consider the 561 // other is better. Yes we have a preference for other. Sue us. 562 return true; 563 } 564 int diff = other.seq - seq; 565 if (diff > 0x10000) { 566 // If there has been a sufficiently large jump, assume the 567 // sequence has wrapped around. 568 return false; 569 } 570 return diff > 0; 571 } 572 573 /** 574 * Parcelable methods 575 */ 576 public int describeContents() { 577 return 0; 578 } 579 580 public void writeToParcel(Parcel dest, int flags) { 581 dest.writeFloat(fontScale); 582 dest.writeInt(mcc); 583 dest.writeInt(mnc); 584 if (locale == null) { 585 dest.writeInt(0); 586 } else { 587 dest.writeInt(1); 588 dest.writeString(locale.getLanguage()); 589 dest.writeString(locale.getCountry()); 590 dest.writeString(locale.getVariant()); 591 } 592 if(userSetLocale) { 593 dest.writeInt(1); 594 } else { 595 dest.writeInt(0); 596 } 597 dest.writeInt(touchscreen); 598 dest.writeInt(keyboard); 599 dest.writeInt(keyboardHidden); 600 dest.writeInt(hardKeyboardHidden); 601 dest.writeInt(navigation); 602 dest.writeInt(navigationHidden); 603 dest.writeInt(orientation); 604 dest.writeInt(screenLayout); 605 dest.writeInt(uiMode); 606 dest.writeInt(seq); 607 } 608 609 public void readFromParcel(Parcel source) { 610 fontScale = source.readFloat(); 611 mcc = source.readInt(); 612 mnc = source.readInt(); 613 if (source.readInt() != 0) { 614 locale = new Locale(source.readString(), source.readString(), 615 source.readString()); 616 } 617 userSetLocale = (source.readInt()==1); 618 touchscreen = source.readInt(); 619 keyboard = source.readInt(); 620 keyboardHidden = source.readInt(); 621 hardKeyboardHidden = source.readInt(); 622 navigation = source.readInt(); 623 navigationHidden = source.readInt(); 624 orientation = source.readInt(); 625 screenLayout = source.readInt(); 626 uiMode = source.readInt(); 627 seq = source.readInt(); 628 } 629 630 public static final Parcelable.Creator<Configuration> CREATOR 631 = new Parcelable.Creator<Configuration>() { 632 public Configuration createFromParcel(Parcel source) { 633 return new Configuration(source); 634 } 635 636 public Configuration[] newArray(int size) { 637 return new Configuration[size]; 638 } 639 }; 640 641 /** 642 * Construct this Configuration object, reading from the Parcel. 643 */ 644 private Configuration(Parcel source) { 645 readFromParcel(source); 646 } 647 648 public int compareTo(Configuration that) { 649 int n; 650 float a = this.fontScale; 651 float b = that.fontScale; 652 if (a < b) return -1; 653 if (a > b) return 1; 654 n = this.mcc - that.mcc; 655 if (n != 0) return n; 656 n = this.mnc - that.mnc; 657 if (n != 0) return n; 658 if (this.locale == null) { 659 if (that.locale != null) return 1; 660 } else if (that.locale == null) { 661 return -1; 662 } else { 663 n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); 664 if (n != 0) return n; 665 n = this.locale.getCountry().compareTo(that.locale.getCountry()); 666 if (n != 0) return n; 667 n = this.locale.getVariant().compareTo(that.locale.getVariant()); 668 if (n != 0) return n; 669 } 670 n = this.touchscreen - that.touchscreen; 671 if (n != 0) return n; 672 n = this.keyboard - that.keyboard; 673 if (n != 0) return n; 674 n = this.keyboardHidden - that.keyboardHidden; 675 if (n != 0) return n; 676 n = this.hardKeyboardHidden - that.hardKeyboardHidden; 677 if (n != 0) return n; 678 n = this.navigation - that.navigation; 679 if (n != 0) return n; 680 n = this.navigationHidden - that.navigationHidden; 681 if (n != 0) return n; 682 n = this.orientation - that.orientation; 683 if (n != 0) return n; 684 n = this.screenLayout - that.screenLayout; 685 if (n != 0) return n; 686 n = this.uiMode - that.uiMode; 687 //if (n != 0) return n; 688 return n; 689 } 690 691 public boolean equals(Configuration that) { 692 if (that == null) return false; 693 if (that == this) return true; 694 return this.compareTo(that) == 0; 695 } 696 697 public boolean equals(Object that) { 698 try { 699 return equals((Configuration)that); 700 } catch (ClassCastException e) { 701 } 702 return false; 703 } 704 705 public int hashCode() { 706 int result = 17; 707 result = 31 * result + Float.floatToIntBits(fontScale); 708 result = 31 * result + mcc; 709 result = 31 * result + mnc; 710 result = 31 * result + (locale != null ? locale.hashCode() : 0); 711 result = 31 * result + touchscreen; 712 result = 31 * result + keyboard; 713 result = 31 * result + keyboardHidden; 714 result = 31 * result + hardKeyboardHidden; 715 result = 31 * result + navigation; 716 result = 31 * result + navigationHidden; 717 result = 31 * result + orientation; 718 result = 31 * result + screenLayout; 719 result = 31 * result + uiMode; 720 return result; 721 } 722} 723