Configuration.java revision 3fb824bae3322252a68c1cf8537280a5d2bd356d
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; 22import android.util.LocaleUtil; 23import android.view.View; 24 25import java.util.Locale; 26 27/** 28 * This class describes all device configuration information that can 29 * impact the resources the application retrieves. This includes both 30 * user-specified configuration options (locale and scaling) as well 31 * as device configurations (such as input modes, screen size and screen orientation). 32 * <p>You can acquire this object from {@link Resources}, using {@link 33 * Resources#getConfiguration}. Thus, from an activity, you can get it by chaining the request 34 * with {@link android.app.Activity#getResources}:</p> 35 * <pre>Configuration config = getResources().getConfiguration();</pre> 36 */ 37public final class Configuration implements Parcelable, Comparable<Configuration> { 38 /** 39 * Current user preference for the scaling factor for fonts, relative 40 * to the base density scaling. 41 */ 42 public float fontScale; 43 44 /** 45 * IMSI MCC (Mobile Country Code). 0 if undefined. 46 */ 47 public int mcc; 48 49 /** 50 * IMSI MNC (Mobile Network Code). 0 if undefined. 51 */ 52 public int mnc; 53 54 /** 55 * Current user preference for the locale. 56 */ 57 public Locale locale; 58 59 /** 60 * Locale should persist on setting. This is hidden because it is really 61 * questionable whether this is the right way to expose the functionality. 62 * @hide 63 */ 64 public boolean userSetLocale; 65 66 /** Constant for {@link #screenLayout}: bits that encode the size. */ 67 public static final int SCREENLAYOUT_SIZE_MASK = 0x0f; 68 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 69 * value indicating that no size has been set. */ 70 public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00; 71 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 72 * value indicating the screen is at least approximately 320x426 dp units. 73 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 74 * Multiple Screens</a> for more information. */ 75 public static final int SCREENLAYOUT_SIZE_SMALL = 0x01; 76 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 77 * value indicating the screen is at least approximately 320x470 dp units. 78 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 79 * Multiple Screens</a> for more information. */ 80 public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02; 81 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 82 * value indicating the screen is at least approximately 480x640 dp units. 83 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 84 * Multiple Screens</a> for more information. */ 85 public static final int SCREENLAYOUT_SIZE_LARGE = 0x03; 86 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 87 * value indicating the screen is at least approximately 720x960 dp units. 88 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 89 * Multiple Screens</a> for more information.*/ 90 public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04; 91 92 public static final int SCREENLAYOUT_LONG_MASK = 0x30; 93 public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00; 94 public static final int SCREENLAYOUT_LONG_NO = 0x10; 95 public static final int SCREENLAYOUT_LONG_YES = 0x20; 96 97 /** 98 * Special flag we generate to indicate that the screen layout requires 99 * us to use a compatibility mode for apps that are not modern layout 100 * aware. 101 * @hide 102 */ 103 public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000; 104 105 /** 106 * Bit mask of overall layout of the screen. Currently there are two 107 * fields: 108 * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size 109 * of the screen. They may be one of 110 * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL}, 111 * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}. 112 * 113 * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen 114 * is wider/taller than normal. They may be one of 115 * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}. 116 * 117 * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 118 * Multiple Screens</a> for more information. 119 */ 120 public int screenLayout; 121 122 /** 123 * Check if the Configuration's current {@link #screenLayout} is at 124 * least the given size. 125 * 126 * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL}, 127 * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or 128 * {@link #SCREENLAYOUT_SIZE_XLARGE}. 129 * @return Returns true if the current screen layout size is at least 130 * the given size. 131 */ 132 public boolean isLayoutSizeAtLeast(int size) { 133 int cur = screenLayout&SCREENLAYOUT_SIZE_MASK; 134 if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false; 135 return cur >= size; 136 } 137 138 public static final int TOUCHSCREEN_UNDEFINED = 0; 139 public static final int TOUCHSCREEN_NOTOUCH = 1; 140 public static final int TOUCHSCREEN_STYLUS = 2; 141 public static final int TOUCHSCREEN_FINGER = 3; 142 143 /** 144 * The kind of touch screen attached to the device. 145 * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_STYLUS}, 146 * {@link #TOUCHSCREEN_FINGER}. 147 */ 148 public int touchscreen; 149 150 public static final int KEYBOARD_UNDEFINED = 0; 151 public static final int KEYBOARD_NOKEYS = 1; 152 public static final int KEYBOARD_QWERTY = 2; 153 public static final int KEYBOARD_12KEY = 3; 154 155 /** 156 * The kind of keyboard attached to the device. 157 * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY}, 158 * {@link #KEYBOARD_12KEY}. 159 */ 160 public int keyboard; 161 162 public static final int KEYBOARDHIDDEN_UNDEFINED = 0; 163 public static final int KEYBOARDHIDDEN_NO = 1; 164 public static final int KEYBOARDHIDDEN_YES = 2; 165 /** Constant matching actual resource implementation. {@hide} */ 166 public static final int KEYBOARDHIDDEN_SOFT = 3; 167 168 /** 169 * A flag indicating whether any keyboard is available. Unlike 170 * {@link #hardKeyboardHidden}, this also takes into account a soft 171 * keyboard, so if the hard keyboard is hidden but there is soft 172 * keyboard available, it will be set to NO. Value is one of: 173 * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}. 174 */ 175 public int keyboardHidden; 176 177 public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0; 178 public static final int HARDKEYBOARDHIDDEN_NO = 1; 179 public static final int HARDKEYBOARDHIDDEN_YES = 2; 180 181 /** 182 * A flag indicating whether the hard keyboard has been hidden. This will 183 * be set on a device with a mechanism to hide the keyboard from the 184 * user, when that mechanism is closed. One of: 185 * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}. 186 */ 187 public int hardKeyboardHidden; 188 189 public static final int NAVIGATION_UNDEFINED = 0; 190 public static final int NAVIGATION_NONAV = 1; 191 public static final int NAVIGATION_DPAD = 2; 192 public static final int NAVIGATION_TRACKBALL = 3; 193 public static final int NAVIGATION_WHEEL = 4; 194 195 /** 196 * The kind of navigation method available on the device. 197 * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD}, 198 * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}. 199 */ 200 public int navigation; 201 202 public static final int NAVIGATIONHIDDEN_UNDEFINED = 0; 203 public static final int NAVIGATIONHIDDEN_NO = 1; 204 public static final int NAVIGATIONHIDDEN_YES = 2; 205 206 /** 207 * A flag indicating whether any 5-way or DPAD navigation available. 208 * This will be set on a device with a mechanism to hide the navigation 209 * controls from the user, when that mechanism is closed. One of: 210 * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}. 211 */ 212 public int navigationHidden; 213 214 public static final int ORIENTATION_UNDEFINED = 0; 215 public static final int ORIENTATION_PORTRAIT = 1; 216 public static final int ORIENTATION_LANDSCAPE = 2; 217 public static final int ORIENTATION_SQUARE = 3; 218 219 /** 220 * Overall orientation of the screen. May be one of 221 * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}, 222 * or {@link #ORIENTATION_SQUARE}. 223 */ 224 public int orientation; 225 226 public static final int UI_MODE_TYPE_MASK = 0x0f; 227 public static final int UI_MODE_TYPE_UNDEFINED = 0x00; 228 public static final int UI_MODE_TYPE_NORMAL = 0x01; 229 public static final int UI_MODE_TYPE_DESK = 0x02; 230 public static final int UI_MODE_TYPE_CAR = 0x03; 231 public static final int UI_MODE_TYPE_TELEVISION = 0x04; 232 public static final int UI_MODE_TYPE_APPLIANCE = 0x05; 233 234 public static final int UI_MODE_NIGHT_MASK = 0x30; 235 public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; 236 public static final int UI_MODE_NIGHT_NO = 0x10; 237 public static final int UI_MODE_NIGHT_YES = 0x20; 238 239 /** 240 * Bit mask of the ui mode. Currently there are two fields: 241 * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the 242 * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, 243 * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, 244 * {@link #UI_MODE_TYPE_CAR}, {@link #UI_MODE_TYPE_TELEVISION}, or 245 * {@link #UI_MODE_TYPE_APPLIANCE}. 246 * 247 * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen 248 * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, 249 * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. 250 */ 251 public int uiMode; 252 253 public static final int SCREEN_WIDTH_DP_UNDEFINED = 0; 254 255 /** 256 * The current width of the available screen space, in dp units. 257 */ 258 public int screenWidthDp; 259 260 public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0; 261 262 /** 263 * The current height of the available screen space, in dp units. 264 */ 265 public int screenHeightDp; 266 267 public static final int SMALLEST_SCREEN_WIDTH_DP_UNDEFINED = 0; 268 269 /** 270 * The smallest screen size an application will see in normal operation. 271 * This is the smallest value of both screenWidthDp and screenHeightDp 272 * in both portrait and landscape. 273 */ 274 public int smallestScreenWidthDp; 275 276 /** @hide Hack to get this information from WM to app running in compat mode. */ 277 public int compatScreenWidthDp; 278 /** @hide Hack to get this information from WM to app running in compat mode. */ 279 public int compatScreenHeightDp; 280 /** @hide Hack to get this information from WM to app running in compat mode. */ 281 public int compatSmallestScreenWidthDp; 282 283 /** 284 * @hide The layout direction associated to the current Locale 285 */ 286 public int layoutDirection; 287 288 /** 289 * @hide Internal book-keeping. 290 */ 291 public int seq; 292 293 /** 294 * Construct an invalid Configuration. You must call {@link #setToDefaults} 295 * for this object to be valid. {@more} 296 */ 297 public Configuration() { 298 setToDefaults(); 299 } 300 301 /** 302 * Makes a deep copy suitable for modification. 303 */ 304 public Configuration(Configuration o) { 305 setTo(o); 306 } 307 308 public void setTo(Configuration o) { 309 fontScale = o.fontScale; 310 mcc = o.mcc; 311 mnc = o.mnc; 312 if (o.locale != null) { 313 locale = (Locale) o.locale.clone(); 314 layoutDirection = o.layoutDirection; 315 } 316 userSetLocale = o.userSetLocale; 317 touchscreen = o.touchscreen; 318 keyboard = o.keyboard; 319 keyboardHidden = o.keyboardHidden; 320 hardKeyboardHidden = o.hardKeyboardHidden; 321 navigation = o.navigation; 322 navigationHidden = o.navigationHidden; 323 orientation = o.orientation; 324 screenLayout = o.screenLayout; 325 uiMode = o.uiMode; 326 screenWidthDp = o.screenWidthDp; 327 screenHeightDp = o.screenHeightDp; 328 smallestScreenWidthDp = o.smallestScreenWidthDp; 329 compatScreenWidthDp = o.compatScreenWidthDp; 330 compatScreenHeightDp = o.compatScreenHeightDp; 331 compatSmallestScreenWidthDp = o.compatSmallestScreenWidthDp; 332 seq = o.seq; 333 } 334 335 public String toString() { 336 StringBuilder sb = new StringBuilder(128); 337 sb.append("{"); 338 sb.append(fontScale); 339 sb.append(" "); 340 sb.append(mcc); 341 sb.append("mcc"); 342 sb.append(mnc); 343 sb.append("mnc"); 344 if (locale != null) { 345 sb.append(" "); 346 sb.append(locale); 347 } else { 348 sb.append(" (no locale)"); 349 } 350 switch (layoutDirection) { 351 case View.LAYOUT_DIRECTION_LTR: /* ltr not interesting */ break; 352 case View.LAYOUT_DIRECTION_RTL: sb.append(" rtl"); break; 353 default: sb.append(" layoutDir="); sb.append(layoutDirection); break; 354 } 355 if (smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 356 sb.append(" sw"); sb.append(smallestScreenWidthDp); sb.append("dp"); 357 } else { 358 sb.append(" ?swdp"); 359 } 360 if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 361 sb.append(" w"); sb.append(screenWidthDp); sb.append("dp"); 362 } else { 363 sb.append(" ?wdp"); 364 } 365 if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 366 sb.append(" h"); sb.append(screenHeightDp); sb.append("dp"); 367 } else { 368 sb.append(" ?hdp"); 369 } 370 switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) { 371 case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?lsize"); break; 372 case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break; 373 case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break; 374 case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break; 375 case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break; 376 default: sb.append(" layoutSize="); 377 sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break; 378 } 379 switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) { 380 case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break; 381 case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break; 382 case SCREENLAYOUT_LONG_YES: sb.append(" long"); break; 383 default: sb.append(" layoutLong="); 384 sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break; 385 } 386 switch (orientation) { 387 case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break; 388 case ORIENTATION_LANDSCAPE: sb.append(" land"); break; 389 case ORIENTATION_PORTRAIT: sb.append(" port"); break; 390 default: sb.append(" orien="); sb.append(orientation); break; 391 } 392 switch ((uiMode&UI_MODE_TYPE_MASK)) { 393 case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break; 394 case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break; 395 case UI_MODE_TYPE_DESK: sb.append(" desk"); break; 396 case UI_MODE_TYPE_CAR: sb.append(" car"); break; 397 case UI_MODE_TYPE_TELEVISION: sb.append(" television"); break; 398 case UI_MODE_TYPE_APPLIANCE: sb.append(" appliance"); break; 399 default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break; 400 } 401 switch ((uiMode&UI_MODE_NIGHT_MASK)) { 402 case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break; 403 case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break; 404 case UI_MODE_NIGHT_YES: sb.append(" night"); break; 405 default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break; 406 } 407 switch (touchscreen) { 408 case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break; 409 case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break; 410 case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break; 411 case TOUCHSCREEN_FINGER: sb.append(" finger"); break; 412 default: sb.append(" touch="); sb.append(touchscreen); break; 413 } 414 switch (keyboard) { 415 case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break; 416 case KEYBOARD_NOKEYS: sb.append(" -keyb"); break; 417 case KEYBOARD_QWERTY: sb.append(" qwerty"); break; 418 case KEYBOARD_12KEY: sb.append(" 12key"); break; 419 default: sb.append(" keys="); sb.append(keyboard); break; 420 } 421 switch (keyboardHidden) { 422 case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 423 case KEYBOARDHIDDEN_NO: sb.append("/v"); break; 424 case KEYBOARDHIDDEN_YES: sb.append("/h"); break; 425 case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break; 426 default: sb.append("/"); sb.append(keyboardHidden); break; 427 } 428 switch (hardKeyboardHidden) { 429 case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 430 case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break; 431 case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break; 432 default: sb.append("/"); sb.append(hardKeyboardHidden); break; 433 } 434 switch (navigation) { 435 case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break; 436 case NAVIGATION_NONAV: sb.append(" -nav"); break; 437 case NAVIGATION_DPAD: sb.append(" dpad"); break; 438 case NAVIGATION_TRACKBALL: sb.append(" tball"); break; 439 case NAVIGATION_WHEEL: sb.append(" wheel"); break; 440 default: sb.append(" nav="); sb.append(navigation); break; 441 } 442 switch (navigationHidden) { 443 case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?"); break; 444 case NAVIGATIONHIDDEN_NO: sb.append("/v"); break; 445 case NAVIGATIONHIDDEN_YES: sb.append("/h"); break; 446 default: sb.append("/"); sb.append(navigationHidden); break; 447 } 448 if (seq != 0) { 449 sb.append(" s."); 450 sb.append(seq); 451 } 452 sb.append('}'); 453 return sb.toString(); 454 } 455 456 /** 457 * Set this object to the system defaults. 458 */ 459 public void setToDefaults() { 460 fontScale = 1; 461 mcc = mnc = 0; 462 locale = null; 463 userSetLocale = false; 464 touchscreen = TOUCHSCREEN_UNDEFINED; 465 keyboard = KEYBOARD_UNDEFINED; 466 keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; 467 hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; 468 navigation = NAVIGATION_UNDEFINED; 469 navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; 470 orientation = ORIENTATION_UNDEFINED; 471 screenLayout = SCREENLAYOUT_SIZE_UNDEFINED; 472 uiMode = UI_MODE_TYPE_UNDEFINED; 473 screenWidthDp = compatScreenWidthDp = SCREEN_WIDTH_DP_UNDEFINED; 474 screenHeightDp = compatScreenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED; 475 smallestScreenWidthDp = compatSmallestScreenWidthDp = SMALLEST_SCREEN_WIDTH_DP_UNDEFINED; 476 layoutDirection = View.LAYOUT_DIRECTION_LTR; 477 seq = 0; 478 } 479 480 /** {@hide} */ 481 @Deprecated public void makeDefault() { 482 setToDefaults(); 483 } 484 485 /** 486 * Copy the fields from delta into this Configuration object, keeping 487 * track of which ones have changed. Any undefined fields in 488 * <var>delta</var> are ignored and not copied in to the current 489 * Configuration. 490 * @return Returns a bit mask of the changed fields, as per 491 * {@link #diff}. 492 */ 493 public int updateFrom(Configuration delta) { 494 int changed = 0; 495 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 496 changed |= ActivityInfo.CONFIG_FONT_SCALE; 497 fontScale = delta.fontScale; 498 } 499 if (delta.mcc != 0 && mcc != delta.mcc) { 500 changed |= ActivityInfo.CONFIG_MCC; 501 mcc = delta.mcc; 502 } 503 if (delta.mnc != 0 && mnc != delta.mnc) { 504 changed |= ActivityInfo.CONFIG_MNC; 505 mnc = delta.mnc; 506 } 507 if (delta.locale != null 508 && (locale == null || !locale.equals(delta.locale))) { 509 changed |= ActivityInfo.CONFIG_LOCALE; 510 locale = delta.locale != null 511 ? (Locale) delta.locale.clone() : null; 512 layoutDirection = LocaleUtil.getLayoutDirectionFromLocale(locale); 513 } 514 if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) 515 { 516 userSetLocale = true; 517 changed |= ActivityInfo.CONFIG_LOCALE; 518 } 519 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 520 && touchscreen != delta.touchscreen) { 521 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 522 touchscreen = delta.touchscreen; 523 } 524 if (delta.keyboard != KEYBOARD_UNDEFINED 525 && keyboard != delta.keyboard) { 526 changed |= ActivityInfo.CONFIG_KEYBOARD; 527 keyboard = delta.keyboard; 528 } 529 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 530 && keyboardHidden != delta.keyboardHidden) { 531 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 532 keyboardHidden = delta.keyboardHidden; 533 } 534 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 535 && hardKeyboardHidden != delta.hardKeyboardHidden) { 536 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 537 hardKeyboardHidden = delta.hardKeyboardHidden; 538 } 539 if (delta.navigation != NAVIGATION_UNDEFINED 540 && navigation != delta.navigation) { 541 changed |= ActivityInfo.CONFIG_NAVIGATION; 542 navigation = delta.navigation; 543 } 544 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 545 && navigationHidden != delta.navigationHidden) { 546 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 547 navigationHidden = delta.navigationHidden; 548 } 549 if (delta.orientation != ORIENTATION_UNDEFINED 550 && orientation != delta.orientation) { 551 changed |= ActivityInfo.CONFIG_ORIENTATION; 552 orientation = delta.orientation; 553 } 554 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 555 && screenLayout != delta.screenLayout) { 556 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 557 screenLayout = delta.screenLayout; 558 } 559 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 560 && uiMode != delta.uiMode) { 561 changed |= ActivityInfo.CONFIG_UI_MODE; 562 if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { 563 uiMode = (uiMode&~UI_MODE_TYPE_MASK) 564 | (delta.uiMode&UI_MODE_TYPE_MASK); 565 } 566 if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { 567 uiMode = (uiMode&~UI_MODE_NIGHT_MASK) 568 | (delta.uiMode&UI_MODE_NIGHT_MASK); 569 } 570 } 571 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 572 && screenWidthDp != delta.screenWidthDp) { 573 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 574 screenWidthDp = delta.screenWidthDp; 575 } 576 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 577 && screenHeightDp != delta.screenHeightDp) { 578 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 579 screenHeightDp = delta.screenHeightDp; 580 } 581 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 582 smallestScreenWidthDp = delta.smallestScreenWidthDp; 583 } 584 if (delta.compatScreenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 585 compatScreenWidthDp = delta.compatScreenWidthDp; 586 } 587 if (delta.compatScreenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 588 compatScreenHeightDp = delta.compatScreenHeightDp; 589 } 590 if (delta.compatSmallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 591 compatSmallestScreenWidthDp = delta.compatSmallestScreenWidthDp; 592 } 593 594 if (delta.seq != 0) { 595 seq = delta.seq; 596 } 597 598 return changed; 599 } 600 601 /** 602 * Return a bit mask of the differences between this Configuration 603 * object and the given one. Does not change the values of either. Any 604 * undefined fields in <var>delta</var> are ignored. 605 * @return Returns a bit mask indicating which configuration 606 * values has changed, containing any combination of 607 * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE 608 * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, 609 * {@link android.content.pm.ActivityInfo#CONFIG_MCC 610 * PackageManager.ActivityInfo.CONFIG_MCC}, 611 * {@link android.content.pm.ActivityInfo#CONFIG_MNC 612 * PackageManager.ActivityInfo.CONFIG_MNC}, 613 * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE 614 * PackageManager.ActivityInfo.CONFIG_LOCALE}, 615 * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN 616 * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, 617 * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD 618 * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, 619 * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION 620 * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, 621 * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION 622 * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, 623 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT 624 * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or 625 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE 626 * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}, or 627 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE 628 * PackageManager.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE}. 629 */ 630 public int diff(Configuration delta) { 631 int changed = 0; 632 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 633 changed |= ActivityInfo.CONFIG_FONT_SCALE; 634 } 635 if (delta.mcc != 0 && mcc != delta.mcc) { 636 changed |= ActivityInfo.CONFIG_MCC; 637 } 638 if (delta.mnc != 0 && mnc != delta.mnc) { 639 changed |= ActivityInfo.CONFIG_MNC; 640 } 641 if (delta.locale != null 642 && (locale == null || !locale.equals(delta.locale))) { 643 changed |= ActivityInfo.CONFIG_LOCALE; 644 } 645 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 646 && touchscreen != delta.touchscreen) { 647 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 648 } 649 if (delta.keyboard != KEYBOARD_UNDEFINED 650 && keyboard != delta.keyboard) { 651 changed |= ActivityInfo.CONFIG_KEYBOARD; 652 } 653 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 654 && keyboardHidden != delta.keyboardHidden) { 655 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 656 } 657 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 658 && hardKeyboardHidden != delta.hardKeyboardHidden) { 659 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 660 } 661 if (delta.navigation != NAVIGATION_UNDEFINED 662 && navigation != delta.navigation) { 663 changed |= ActivityInfo.CONFIG_NAVIGATION; 664 } 665 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 666 && navigationHidden != delta.navigationHidden) { 667 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 668 } 669 if (delta.orientation != ORIENTATION_UNDEFINED 670 && orientation != delta.orientation) { 671 changed |= ActivityInfo.CONFIG_ORIENTATION; 672 } 673 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 674 && screenLayout != delta.screenLayout) { 675 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 676 } 677 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 678 && uiMode != delta.uiMode) { 679 changed |= ActivityInfo.CONFIG_UI_MODE; 680 } 681 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 682 && screenWidthDp != delta.screenWidthDp) { 683 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 684 } 685 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 686 && screenHeightDp != delta.screenHeightDp) { 687 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 688 } 689 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED 690 && smallestScreenWidthDp != delta.smallestScreenWidthDp) { 691 changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; 692 } 693 694 return changed; 695 } 696 697 /** 698 * Determine if a new resource needs to be loaded from the bit set of 699 * configuration changes returned by {@link #updateFrom(Configuration)}. 700 * 701 * @param configChanges The mask of changes configurations as returned by 702 * {@link #updateFrom(Configuration)}. 703 * @param interestingChanges The configuration changes that the resource 704 * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. 705 * 706 * @return Return true if the resource needs to be loaded, else false. 707 */ 708 public static boolean needNewResources(int configChanges, int interestingChanges) { 709 return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; 710 } 711 712 /** 713 * @hide Return true if the sequence of 'other' is better than this. Assumes 714 * that 'this' is your current sequence and 'other' is a new one you have 715 * received some how and want to compare with what you have. 716 */ 717 public boolean isOtherSeqNewer(Configuration other) { 718 if (other == null) { 719 // Sanity check. 720 return false; 721 } 722 if (other.seq == 0) { 723 // If the other sequence is not specified, then we must assume 724 // it is newer since we don't know any better. 725 return true; 726 } 727 if (seq == 0) { 728 // If this sequence is not specified, then we also consider the 729 // other is better. Yes we have a preference for other. Sue us. 730 return true; 731 } 732 int diff = other.seq - seq; 733 if (diff > 0x10000) { 734 // If there has been a sufficiently large jump, assume the 735 // sequence has wrapped around. 736 return false; 737 } 738 return diff > 0; 739 } 740 741 /** 742 * Parcelable methods 743 */ 744 public int describeContents() { 745 return 0; 746 } 747 748 public void writeToParcel(Parcel dest, int flags) { 749 dest.writeFloat(fontScale); 750 dest.writeInt(mcc); 751 dest.writeInt(mnc); 752 if (locale == null) { 753 dest.writeInt(0); 754 } else { 755 dest.writeInt(1); 756 dest.writeString(locale.getLanguage()); 757 dest.writeString(locale.getCountry()); 758 dest.writeString(locale.getVariant()); 759 } 760 if(userSetLocale) { 761 dest.writeInt(1); 762 } else { 763 dest.writeInt(0); 764 } 765 dest.writeInt(touchscreen); 766 dest.writeInt(keyboard); 767 dest.writeInt(keyboardHidden); 768 dest.writeInt(hardKeyboardHidden); 769 dest.writeInt(navigation); 770 dest.writeInt(navigationHidden); 771 dest.writeInt(orientation); 772 dest.writeInt(screenLayout); 773 dest.writeInt(uiMode); 774 dest.writeInt(screenWidthDp); 775 dest.writeInt(screenHeightDp); 776 dest.writeInt(smallestScreenWidthDp); 777 dest.writeInt(compatScreenWidthDp); 778 dest.writeInt(compatScreenHeightDp); 779 dest.writeInt(compatSmallestScreenWidthDp); 780 dest.writeInt(layoutDirection); 781 dest.writeInt(seq); 782 } 783 784 public void readFromParcel(Parcel source) { 785 fontScale = source.readFloat(); 786 mcc = source.readInt(); 787 mnc = source.readInt(); 788 if (source.readInt() != 0) { 789 locale = new Locale(source.readString(), source.readString(), 790 source.readString()); 791 } 792 userSetLocale = (source.readInt()==1); 793 touchscreen = source.readInt(); 794 keyboard = source.readInt(); 795 keyboardHidden = source.readInt(); 796 hardKeyboardHidden = source.readInt(); 797 navigation = source.readInt(); 798 navigationHidden = source.readInt(); 799 orientation = source.readInt(); 800 screenLayout = source.readInt(); 801 uiMode = source.readInt(); 802 screenWidthDp = source.readInt(); 803 screenHeightDp = source.readInt(); 804 smallestScreenWidthDp = source.readInt(); 805 compatScreenWidthDp = source.readInt(); 806 compatScreenHeightDp = source.readInt(); 807 compatSmallestScreenWidthDp = source.readInt(); 808 layoutDirection = source.readInt(); 809 seq = source.readInt(); 810 } 811 812 public static final Parcelable.Creator<Configuration> CREATOR 813 = new Parcelable.Creator<Configuration>() { 814 public Configuration createFromParcel(Parcel source) { 815 return new Configuration(source); 816 } 817 818 public Configuration[] newArray(int size) { 819 return new Configuration[size]; 820 } 821 }; 822 823 /** 824 * Construct this Configuration object, reading from the Parcel. 825 */ 826 private Configuration(Parcel source) { 827 readFromParcel(source); 828 } 829 830 public int compareTo(Configuration that) { 831 int n; 832 float a = this.fontScale; 833 float b = that.fontScale; 834 if (a < b) return -1; 835 if (a > b) return 1; 836 n = this.mcc - that.mcc; 837 if (n != 0) return n; 838 n = this.mnc - that.mnc; 839 if (n != 0) return n; 840 if (this.locale == null) { 841 if (that.locale != null) return 1; 842 } else if (that.locale == null) { 843 return -1; 844 } else { 845 n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); 846 if (n != 0) return n; 847 n = this.locale.getCountry().compareTo(that.locale.getCountry()); 848 if (n != 0) return n; 849 n = this.locale.getVariant().compareTo(that.locale.getVariant()); 850 if (n != 0) return n; 851 } 852 n = this.touchscreen - that.touchscreen; 853 if (n != 0) return n; 854 n = this.keyboard - that.keyboard; 855 if (n != 0) return n; 856 n = this.keyboardHidden - that.keyboardHidden; 857 if (n != 0) return n; 858 n = this.hardKeyboardHidden - that.hardKeyboardHidden; 859 if (n != 0) return n; 860 n = this.navigation - that.navigation; 861 if (n != 0) return n; 862 n = this.navigationHidden - that.navigationHidden; 863 if (n != 0) return n; 864 n = this.orientation - that.orientation; 865 if (n != 0) return n; 866 n = this.screenLayout - that.screenLayout; 867 if (n != 0) return n; 868 n = this.uiMode - that.uiMode; 869 if (n != 0) return n; 870 n = this.screenWidthDp - that.screenWidthDp; 871 if (n != 0) return n; 872 n = this.screenHeightDp - that.screenHeightDp; 873 if (n != 0) return n; 874 n = this.smallestScreenWidthDp - that.smallestScreenWidthDp; 875 //if (n != 0) return n; 876 return n; 877 } 878 879 public boolean equals(Configuration that) { 880 if (that == null) return false; 881 if (that == this) return true; 882 return this.compareTo(that) == 0; 883 } 884 885 public boolean equals(Object that) { 886 try { 887 return equals((Configuration)that); 888 } catch (ClassCastException e) { 889 } 890 return false; 891 } 892 893 public int hashCode() { 894 int result = 17; 895 result = 31 * result + Float.floatToIntBits(fontScale); 896 result = 31 * result + mcc; 897 result = 31 * result + mnc; 898 result = 31 * result + (locale != null ? locale.hashCode() : 0); 899 result = 31 * result + touchscreen; 900 result = 31 * result + keyboard; 901 result = 31 * result + keyboardHidden; 902 result = 31 * result + hardKeyboardHidden; 903 result = 31 * result + navigation; 904 result = 31 * result + navigationHidden; 905 result = 31 * result + orientation; 906 result = 31 * result + screenLayout; 907 result = 31 * result + uiMode; 908 result = 31 * result + screenWidthDp; 909 result = 31 * result + screenHeightDp; 910 result = 31 * result + smallestScreenWidthDp; 911 return result; 912 } 913} 914