Configuration.java revision 7a736fbf69dd6f03db968d7d8182024eebc0e508
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 public static final int UI_MODE_TYPE_TELEVISION = 0x04; 230 231 public static final int UI_MODE_NIGHT_MASK = 0x30; 232 public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; 233 public static final int UI_MODE_NIGHT_NO = 0x10; 234 public static final int UI_MODE_NIGHT_YES = 0x20; 235 236 /** 237 * Bit mask of the ui mode. Currently there are two fields: 238 * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the 239 * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, 240 * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, 241 * or {@link #UI_MODE_TYPE_CAR}. 242 * 243 * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen 244 * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, 245 * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. 246 */ 247 public int uiMode; 248 249 public static final int SCREEN_WIDTH_DP_UNDEFINED = 0; 250 251 /** 252 * The current width of the available screen space, in dp units. 253 */ 254 public int screenWidthDp; 255 256 public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0; 257 258 /** 259 * The current height of the available screen space, in dp units. 260 */ 261 public int screenHeightDp; 262 263 public static final int SMALLEST_SCREEN_WIDTH_DP_UNDEFINED = 0; 264 265 /** 266 * The smallest screen size an application will see in normal operation. 267 * This is the smallest value of both screenWidthDp and screenHeightDp 268 * in both portrait and landscape. 269 */ 270 public int smallestScreenWidthDp; 271 272 /** @hide Hack to get this information from WM to app running in compat mode. */ 273 public int compatScreenWidthDp; 274 /** @hide Hack to get this information from WM to app running in compat mode. */ 275 public int compatScreenHeightDp; 276 /** @hide Hack to get this information from WM to app running in compat mode. */ 277 public int compatSmallestScreenWidthDp; 278 279 /** 280 * @hide Do not use. Implementation not finished. 281 */ 282 public static final int TEXT_LAYOUT_DIRECTION_UNDEFINED_DO_NOT_USE = -1; 283 284 /** 285 * @hide Do not use. Implementation not finished. 286 */ 287 public static final int TEXT_LAYOUT_DIRECTION_LTR_DO_NOT_USE = 0; 288 289 /** 290 * @hide Do not use. Implementation not finished. 291 */ 292 public static final int TEXT_LAYOUT_DIRECTION_RTL_DO_NOT_USE = 1; 293 294 /** 295 * @hide The text layout direction associated to the current Locale 296 */ 297 public int textLayoutDirection; 298 299 /** 300 * @hide Internal book-keeping. 301 */ 302 public int seq; 303 304 /** 305 * Construct an invalid Configuration. You must call {@link #setToDefaults} 306 * for this object to be valid. {@more} 307 */ 308 public Configuration() { 309 setToDefaults(); 310 } 311 312 /** 313 * Makes a deep copy suitable for modification. 314 */ 315 public Configuration(Configuration o) { 316 setTo(o); 317 } 318 319 public void setTo(Configuration o) { 320 fontScale = o.fontScale; 321 mcc = o.mcc; 322 mnc = o.mnc; 323 if (o.locale != null) { 324 locale = (Locale) o.locale.clone(); 325 textLayoutDirection = o.textLayoutDirection; 326 } 327 userSetLocale = o.userSetLocale; 328 touchscreen = o.touchscreen; 329 keyboard = o.keyboard; 330 keyboardHidden = o.keyboardHidden; 331 hardKeyboardHidden = o.hardKeyboardHidden; 332 navigation = o.navigation; 333 navigationHidden = o.navigationHidden; 334 orientation = o.orientation; 335 screenLayout = o.screenLayout; 336 uiMode = o.uiMode; 337 screenWidthDp = o.screenWidthDp; 338 screenHeightDp = o.screenHeightDp; 339 smallestScreenWidthDp = o.smallestScreenWidthDp; 340 compatScreenWidthDp = o.compatScreenWidthDp; 341 compatScreenHeightDp = o.compatScreenHeightDp; 342 compatSmallestScreenWidthDp = o.compatSmallestScreenWidthDp; 343 seq = o.seq; 344 } 345 346 public String toString() { 347 StringBuilder sb = new StringBuilder(128); 348 sb.append("{"); 349 sb.append(fontScale); 350 sb.append(" "); 351 sb.append(mcc); 352 sb.append("mcc"); 353 sb.append(mnc); 354 sb.append("mnc"); 355 if (locale != null) { 356 sb.append(" "); 357 sb.append(locale); 358 } else { 359 sb.append(" (no locale)"); 360 } 361 switch (textLayoutDirection) { 362 case TEXT_LAYOUT_DIRECTION_UNDEFINED_DO_NOT_USE: sb.append(" ?layoutdir"); break; 363 case TEXT_LAYOUT_DIRECTION_RTL_DO_NOT_USE: sb.append(" rtl"); break; 364 default: sb.append(" layoutdir="); sb.append(textLayoutDirection); break; 365 } 366 if (smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 367 sb.append(" sw"); sb.append(smallestScreenWidthDp); sb.append("dp"); 368 } else { 369 sb.append(" ?swdp"); 370 } 371 if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 372 sb.append(" w"); sb.append(screenWidthDp); sb.append("dp"); 373 } else { 374 sb.append(" ?wdp"); 375 } 376 if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 377 sb.append(" h"); sb.append(screenHeightDp); sb.append("dp"); 378 } else { 379 sb.append(" ?hdp"); 380 } 381 switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) { 382 case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?lsize"); break; 383 case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break; 384 case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break; 385 case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break; 386 case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break; 387 default: sb.append(" layoutSize="); 388 sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break; 389 } 390 switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) { 391 case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break; 392 case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break; 393 case SCREENLAYOUT_LONG_YES: sb.append(" long"); break; 394 default: sb.append(" layoutLong="); 395 sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break; 396 } 397 switch (orientation) { 398 case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break; 399 case ORIENTATION_LANDSCAPE: sb.append(" land"); break; 400 case ORIENTATION_PORTRAIT: sb.append(" port"); break; 401 default: sb.append(" orien="); sb.append(orientation); break; 402 } 403 switch ((uiMode&UI_MODE_TYPE_MASK)) { 404 case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break; 405 case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break; 406 case UI_MODE_TYPE_DESK: sb.append(" desk"); break; 407 case UI_MODE_TYPE_CAR: sb.append(" car"); break; 408 case UI_MODE_TYPE_TELEVISION: sb.append(" television"); break; 409 default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break; 410 } 411 switch ((uiMode&UI_MODE_NIGHT_MASK)) { 412 case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break; 413 case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break; 414 case UI_MODE_NIGHT_YES: sb.append(" night"); break; 415 default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break; 416 } 417 switch (touchscreen) { 418 case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break; 419 case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break; 420 case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break; 421 case TOUCHSCREEN_FINGER: sb.append(" finger"); break; 422 default: sb.append(" touch="); sb.append(touchscreen); break; 423 } 424 switch (keyboard) { 425 case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break; 426 case KEYBOARD_NOKEYS: sb.append(" -keyb"); break; 427 case KEYBOARD_QWERTY: sb.append(" qwerty"); break; 428 case KEYBOARD_12KEY: sb.append(" 12key"); break; 429 default: sb.append(" keys="); sb.append(keyboard); break; 430 } 431 switch (keyboardHidden) { 432 case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 433 case KEYBOARDHIDDEN_NO: sb.append("/v"); break; 434 case KEYBOARDHIDDEN_YES: sb.append("/h"); break; 435 case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break; 436 default: sb.append("/"); sb.append(keyboardHidden); break; 437 } 438 switch (hardKeyboardHidden) { 439 case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 440 case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break; 441 case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break; 442 default: sb.append("/"); sb.append(hardKeyboardHidden); break; 443 } 444 switch (navigation) { 445 case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break; 446 case NAVIGATION_NONAV: sb.append(" -nav"); break; 447 case NAVIGATION_DPAD: sb.append(" dpad"); break; 448 case NAVIGATION_TRACKBALL: sb.append(" tball"); break; 449 case NAVIGATION_WHEEL: sb.append(" wheel"); break; 450 default: sb.append(" nav="); sb.append(navigation); break; 451 } 452 switch (navigationHidden) { 453 case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?"); break; 454 case NAVIGATIONHIDDEN_NO: sb.append("/v"); break; 455 case NAVIGATIONHIDDEN_YES: sb.append("/h"); break; 456 default: sb.append("/"); sb.append(navigationHidden); break; 457 } 458 if (seq != 0) { 459 sb.append(" s."); 460 sb.append(seq); 461 } 462 sb.append('}'); 463 return sb.toString(); 464 } 465 466 /** 467 * Set this object to the system defaults. 468 */ 469 public void setToDefaults() { 470 fontScale = 1; 471 mcc = mnc = 0; 472 locale = null; 473 userSetLocale = false; 474 touchscreen = TOUCHSCREEN_UNDEFINED; 475 keyboard = KEYBOARD_UNDEFINED; 476 keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; 477 hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; 478 navigation = NAVIGATION_UNDEFINED; 479 navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; 480 orientation = ORIENTATION_UNDEFINED; 481 screenLayout = SCREENLAYOUT_SIZE_UNDEFINED; 482 uiMode = UI_MODE_TYPE_UNDEFINED; 483 screenWidthDp = compatScreenWidthDp = SCREEN_WIDTH_DP_UNDEFINED; 484 screenHeightDp = compatScreenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED; 485 smallestScreenWidthDp = compatSmallestScreenWidthDp = SMALLEST_SCREEN_WIDTH_DP_UNDEFINED; 486 textLayoutDirection = TEXT_LAYOUT_DIRECTION_LTR_DO_NOT_USE; 487 seq = 0; 488 } 489 490 /** {@hide} */ 491 @Deprecated public void makeDefault() { 492 setToDefaults(); 493 } 494 495 /** 496 * Copy the fields from delta into this Configuration object, keeping 497 * track of which ones have changed. Any undefined fields in 498 * <var>delta</var> are ignored and not copied in to the current 499 * Configuration. 500 * @return Returns a bit mask of the changed fields, as per 501 * {@link #diff}. 502 */ 503 public int updateFrom(Configuration delta) { 504 int changed = 0; 505 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 506 changed |= ActivityInfo.CONFIG_FONT_SCALE; 507 fontScale = delta.fontScale; 508 } 509 if (delta.mcc != 0 && mcc != delta.mcc) { 510 changed |= ActivityInfo.CONFIG_MCC; 511 mcc = delta.mcc; 512 } 513 if (delta.mnc != 0 && mnc != delta.mnc) { 514 changed |= ActivityInfo.CONFIG_MNC; 515 mnc = delta.mnc; 516 } 517 if (delta.locale != null 518 && (locale == null || !locale.equals(delta.locale))) { 519 changed |= ActivityInfo.CONFIG_LOCALE; 520 locale = delta.locale != null 521 ? (Locale) delta.locale.clone() : null; 522 textLayoutDirection = getLayoutDirectionFromLocale(locale); 523 } 524 if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) 525 { 526 userSetLocale = true; 527 changed |= ActivityInfo.CONFIG_LOCALE; 528 } 529 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 530 && touchscreen != delta.touchscreen) { 531 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 532 touchscreen = delta.touchscreen; 533 } 534 if (delta.keyboard != KEYBOARD_UNDEFINED 535 && keyboard != delta.keyboard) { 536 changed |= ActivityInfo.CONFIG_KEYBOARD; 537 keyboard = delta.keyboard; 538 } 539 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 540 && keyboardHidden != delta.keyboardHidden) { 541 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 542 keyboardHidden = delta.keyboardHidden; 543 } 544 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 545 && hardKeyboardHidden != delta.hardKeyboardHidden) { 546 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 547 hardKeyboardHidden = delta.hardKeyboardHidden; 548 } 549 if (delta.navigation != NAVIGATION_UNDEFINED 550 && navigation != delta.navigation) { 551 changed |= ActivityInfo.CONFIG_NAVIGATION; 552 navigation = delta.navigation; 553 } 554 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 555 && navigationHidden != delta.navigationHidden) { 556 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 557 navigationHidden = delta.navigationHidden; 558 } 559 if (delta.orientation != ORIENTATION_UNDEFINED 560 && orientation != delta.orientation) { 561 changed |= ActivityInfo.CONFIG_ORIENTATION; 562 orientation = delta.orientation; 563 } 564 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 565 && screenLayout != delta.screenLayout) { 566 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 567 screenLayout = delta.screenLayout; 568 } 569 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 570 && uiMode != delta.uiMode) { 571 changed |= ActivityInfo.CONFIG_UI_MODE; 572 if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { 573 uiMode = (uiMode&~UI_MODE_TYPE_MASK) 574 | (delta.uiMode&UI_MODE_TYPE_MASK); 575 } 576 if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { 577 uiMode = (uiMode&~UI_MODE_NIGHT_MASK) 578 | (delta.uiMode&UI_MODE_NIGHT_MASK); 579 } 580 } 581 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 582 && screenWidthDp != delta.screenWidthDp) { 583 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 584 screenWidthDp = delta.screenWidthDp; 585 } 586 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 587 && screenHeightDp != delta.screenHeightDp) { 588 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 589 screenHeightDp = delta.screenHeightDp; 590 } 591 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 592 smallestScreenWidthDp = delta.smallestScreenWidthDp; 593 } 594 if (delta.compatScreenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 595 compatScreenWidthDp = delta.compatScreenWidthDp; 596 } 597 if (delta.compatScreenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 598 compatScreenHeightDp = delta.compatScreenHeightDp; 599 } 600 if (delta.compatSmallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 601 compatSmallestScreenWidthDp = delta.compatSmallestScreenWidthDp; 602 } 603 604 if (delta.seq != 0) { 605 seq = delta.seq; 606 } 607 608 return changed; 609 } 610 611 /** 612 * Return the layout direction for a given Locale 613 * @param locale the Locale for which we want the layout direction. Can be null. 614 * @return the layout direction. This may be one of: 615 * {@link #TEXT_LAYOUT_DIRECTION_UNDEFINED_DO_NOT_USE} or 616 * {@link #TEXT_LAYOUT_DIRECTION_LTR_DO_NOT_USE} or 617 * {@link #TEXT_LAYOUT_DIRECTION_RTL_DO_NOT_USE}. 618 * 619 * @hide 620 */ 621 public static int getLayoutDirectionFromLocale(Locale locale) { 622 if (locale == null || locale.equals(Locale.ROOT)) return TEXT_LAYOUT_DIRECTION_UNDEFINED_DO_NOT_USE; 623 // Be careful: this code will need to be changed when vertical scripts will be supported 624 // OR if ICU4C is updated to have the "likelySubtags" file 625 switch(Character.getDirectionality(locale.getDisplayName(locale).charAt(0))) { 626 case Character.DIRECTIONALITY_LEFT_TO_RIGHT: 627 return TEXT_LAYOUT_DIRECTION_LTR_DO_NOT_USE; 628 case Character.DIRECTIONALITY_RIGHT_TO_LEFT: 629 case Character.DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC: 630 return TEXT_LAYOUT_DIRECTION_RTL_DO_NOT_USE; 631 default: 632 return TEXT_LAYOUT_DIRECTION_UNDEFINED_DO_NOT_USE; 633 } 634 } 635 636 /** 637 * Return a bit mask of the differences between this Configuration 638 * object and the given one. Does not change the values of either. Any 639 * undefined fields in <var>delta</var> are ignored. 640 * @return Returns a bit mask indicating which configuration 641 * values has changed, containing any combination of 642 * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE 643 * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, 644 * {@link android.content.pm.ActivityInfo#CONFIG_MCC 645 * PackageManager.ActivityInfo.CONFIG_MCC}, 646 * {@link android.content.pm.ActivityInfo#CONFIG_MNC 647 * PackageManager.ActivityInfo.CONFIG_MNC}, 648 * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE 649 * PackageManager.ActivityInfo.CONFIG_LOCALE}, 650 * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN 651 * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, 652 * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD 653 * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, 654 * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION 655 * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, 656 * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION 657 * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, 658 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT 659 * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or 660 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE 661 * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}, or 662 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE 663 * PackageManager.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE}. 664 */ 665 public int diff(Configuration delta) { 666 int changed = 0; 667 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 668 changed |= ActivityInfo.CONFIG_FONT_SCALE; 669 } 670 if (delta.mcc != 0 && mcc != delta.mcc) { 671 changed |= ActivityInfo.CONFIG_MCC; 672 } 673 if (delta.mnc != 0 && mnc != delta.mnc) { 674 changed |= ActivityInfo.CONFIG_MNC; 675 } 676 if (delta.locale != null 677 && (locale == null || !locale.equals(delta.locale))) { 678 changed |= ActivityInfo.CONFIG_LOCALE; 679 } 680 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 681 && touchscreen != delta.touchscreen) { 682 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 683 } 684 if (delta.keyboard != KEYBOARD_UNDEFINED 685 && keyboard != delta.keyboard) { 686 changed |= ActivityInfo.CONFIG_KEYBOARD; 687 } 688 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 689 && keyboardHidden != delta.keyboardHidden) { 690 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 691 } 692 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 693 && hardKeyboardHidden != delta.hardKeyboardHidden) { 694 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 695 } 696 if (delta.navigation != NAVIGATION_UNDEFINED 697 && navigation != delta.navigation) { 698 changed |= ActivityInfo.CONFIG_NAVIGATION; 699 } 700 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 701 && navigationHidden != delta.navigationHidden) { 702 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 703 } 704 if (delta.orientation != ORIENTATION_UNDEFINED 705 && orientation != delta.orientation) { 706 changed |= ActivityInfo.CONFIG_ORIENTATION; 707 } 708 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 709 && screenLayout != delta.screenLayout) { 710 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 711 } 712 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 713 && uiMode != delta.uiMode) { 714 changed |= ActivityInfo.CONFIG_UI_MODE; 715 } 716 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 717 && screenWidthDp != delta.screenWidthDp) { 718 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 719 } 720 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 721 && screenHeightDp != delta.screenHeightDp) { 722 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 723 } 724 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED 725 && smallestScreenWidthDp != delta.smallestScreenWidthDp) { 726 changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; 727 } 728 729 return changed; 730 } 731 732 /** 733 * Determine if a new resource needs to be loaded from the bit set of 734 * configuration changes returned by {@link #updateFrom(Configuration)}. 735 * 736 * @param configChanges The mask of changes configurations as returned by 737 * {@link #updateFrom(Configuration)}. 738 * @param interestingChanges The configuration changes that the resource 739 * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. 740 * 741 * @return Return true if the resource needs to be loaded, else false. 742 */ 743 public static boolean needNewResources(int configChanges, int interestingChanges) { 744 return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; 745 } 746 747 /** 748 * @hide Return true if the sequence of 'other' is better than this. Assumes 749 * that 'this' is your current sequence and 'other' is a new one you have 750 * received some how and want to compare with what you have. 751 */ 752 public boolean isOtherSeqNewer(Configuration other) { 753 if (other == null) { 754 // Sanity check. 755 return false; 756 } 757 if (other.seq == 0) { 758 // If the other sequence is not specified, then we must assume 759 // it is newer since we don't know any better. 760 return true; 761 } 762 if (seq == 0) { 763 // If this sequence is not specified, then we also consider the 764 // other is better. Yes we have a preference for other. Sue us. 765 return true; 766 } 767 int diff = other.seq - seq; 768 if (diff > 0x10000) { 769 // If there has been a sufficiently large jump, assume the 770 // sequence has wrapped around. 771 return false; 772 } 773 return diff > 0; 774 } 775 776 /** 777 * Parcelable methods 778 */ 779 public int describeContents() { 780 return 0; 781 } 782 783 public void writeToParcel(Parcel dest, int flags) { 784 dest.writeFloat(fontScale); 785 dest.writeInt(mcc); 786 dest.writeInt(mnc); 787 if (locale == null) { 788 dest.writeInt(0); 789 } else { 790 dest.writeInt(1); 791 dest.writeString(locale.getLanguage()); 792 dest.writeString(locale.getCountry()); 793 dest.writeString(locale.getVariant()); 794 } 795 if(userSetLocale) { 796 dest.writeInt(1); 797 } else { 798 dest.writeInt(0); 799 } 800 dest.writeInt(touchscreen); 801 dest.writeInt(keyboard); 802 dest.writeInt(keyboardHidden); 803 dest.writeInt(hardKeyboardHidden); 804 dest.writeInt(navigation); 805 dest.writeInt(navigationHidden); 806 dest.writeInt(orientation); 807 dest.writeInt(screenLayout); 808 dest.writeInt(uiMode); 809 dest.writeInt(screenWidthDp); 810 dest.writeInt(screenHeightDp); 811 dest.writeInt(smallestScreenWidthDp); 812 dest.writeInt(compatScreenWidthDp); 813 dest.writeInt(compatScreenHeightDp); 814 dest.writeInt(compatSmallestScreenWidthDp); 815 dest.writeInt(textLayoutDirection); 816 dest.writeInt(seq); 817 } 818 819 public void readFromParcel(Parcel source) { 820 fontScale = source.readFloat(); 821 mcc = source.readInt(); 822 mnc = source.readInt(); 823 if (source.readInt() != 0) { 824 locale = new Locale(source.readString(), source.readString(), 825 source.readString()); 826 } 827 userSetLocale = (source.readInt()==1); 828 touchscreen = source.readInt(); 829 keyboard = source.readInt(); 830 keyboardHidden = source.readInt(); 831 hardKeyboardHidden = source.readInt(); 832 navigation = source.readInt(); 833 navigationHidden = source.readInt(); 834 orientation = source.readInt(); 835 screenLayout = source.readInt(); 836 uiMode = source.readInt(); 837 screenWidthDp = source.readInt(); 838 screenHeightDp = source.readInt(); 839 smallestScreenWidthDp = source.readInt(); 840 compatScreenWidthDp = source.readInt(); 841 compatScreenHeightDp = source.readInt(); 842 compatSmallestScreenWidthDp = source.readInt(); 843 textLayoutDirection = source.readInt(); 844 seq = source.readInt(); 845 } 846 847 public static final Parcelable.Creator<Configuration> CREATOR 848 = new Parcelable.Creator<Configuration>() { 849 public Configuration createFromParcel(Parcel source) { 850 return new Configuration(source); 851 } 852 853 public Configuration[] newArray(int size) { 854 return new Configuration[size]; 855 } 856 }; 857 858 /** 859 * Construct this Configuration object, reading from the Parcel. 860 */ 861 private Configuration(Parcel source) { 862 readFromParcel(source); 863 } 864 865 public int compareTo(Configuration that) { 866 int n; 867 float a = this.fontScale; 868 float b = that.fontScale; 869 if (a < b) return -1; 870 if (a > b) return 1; 871 n = this.mcc - that.mcc; 872 if (n != 0) return n; 873 n = this.mnc - that.mnc; 874 if (n != 0) return n; 875 if (this.locale == null) { 876 if (that.locale != null) return 1; 877 } else if (that.locale == null) { 878 return -1; 879 } else { 880 n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); 881 if (n != 0) return n; 882 n = this.locale.getCountry().compareTo(that.locale.getCountry()); 883 if (n != 0) return n; 884 n = this.locale.getVariant().compareTo(that.locale.getVariant()); 885 if (n != 0) return n; 886 } 887 n = this.touchscreen - that.touchscreen; 888 if (n != 0) return n; 889 n = this.keyboard - that.keyboard; 890 if (n != 0) return n; 891 n = this.keyboardHidden - that.keyboardHidden; 892 if (n != 0) return n; 893 n = this.hardKeyboardHidden - that.hardKeyboardHidden; 894 if (n != 0) return n; 895 n = this.navigation - that.navigation; 896 if (n != 0) return n; 897 n = this.navigationHidden - that.navigationHidden; 898 if (n != 0) return n; 899 n = this.orientation - that.orientation; 900 if (n != 0) return n; 901 n = this.screenLayout - that.screenLayout; 902 if (n != 0) return n; 903 n = this.uiMode - that.uiMode; 904 if (n != 0) return n; 905 n = this.screenWidthDp - that.screenWidthDp; 906 if (n != 0) return n; 907 n = this.screenHeightDp - that.screenHeightDp; 908 if (n != 0) return n; 909 n = this.smallestScreenWidthDp - that.smallestScreenWidthDp; 910 //if (n != 0) return n; 911 return n; 912 } 913 914 public boolean equals(Configuration that) { 915 if (that == null) return false; 916 if (that == this) return true; 917 return this.compareTo(that) == 0; 918 } 919 920 public boolean equals(Object that) { 921 try { 922 return equals((Configuration)that); 923 } catch (ClassCastException e) { 924 } 925 return false; 926 } 927 928 public int hashCode() { 929 int result = 17; 930 result = 31 * result + Float.floatToIntBits(fontScale); 931 result = 31 * result + mcc; 932 result = 31 * result + mnc; 933 result = 31 * result + (locale != null ? locale.hashCode() : 0); 934 result = 31 * result + touchscreen; 935 result = 31 * result + keyboard; 936 result = 31 * result + keyboardHidden; 937 result = 31 * result + hardKeyboardHidden; 938 result = 31 * result + navigation; 939 result = 31 * result + navigationHidden; 940 result = 31 * result + orientation; 941 result = 31 * result + screenLayout; 942 result = 31 * result + uiMode; 943 result = 31 * result + screenWidthDp; 944 result = 31 * result + screenHeightDp; 945 result = 31 * result + smallestScreenWidthDp; 946 return result; 947 } 948} 949