Configuration.java revision e17aeb31030cfeed339a39a107912ad5e9178390
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 dynamic device configuration (various types of input devices). 30 */ 31public final class Configuration implements Parcelable, Comparable<Configuration> { 32 /** 33 * Current user preference for the scaling factor for fonts, relative 34 * to the base density scaling. 35 */ 36 public float fontScale; 37 38 /** 39 * IMSI MCC (Mobile Country Code). 0 if undefined. 40 */ 41 public int mcc; 42 43 /** 44 * IMSI MNC (Mobile Network Code). 0 if undefined. 45 */ 46 public int mnc; 47 48 /** 49 * Current user preference for the locale. 50 */ 51 public Locale locale; 52 53 /** 54 * Locale should persist on setting. This is hidden because it is really 55 * questionable whether this is the right way to expose the functionality. 56 * @hide 57 */ 58 public boolean userSetLocale; 59 60 /** Constant for {@link #screenLayout}: bits that encode the size. */ 61 public static final int SCREENLAYOUT_SIZE_MASK = 0x0f; 62 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 63 * value indicating that no size has been set. */ 64 public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00; 65 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 66 * value indicating the screen is at least approximately 320x426 dp units. 67 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 68 * Multiple Screens</a> for more information. */ 69 public static final int SCREENLAYOUT_SIZE_SMALL = 0x01; 70 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 71 * value indicating the screen is at least approximately 320x470 dp units. 72 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 73 * Multiple Screens</a> for more information. */ 74 public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02; 75 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 76 * value indicating the screen is at least approximately 480x640 dp units. 77 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 78 * Multiple Screens</a> for more information. */ 79 public static final int SCREENLAYOUT_SIZE_LARGE = 0x03; 80 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 81 * value indicating the screen is at least approximately 720x960 dp units. 82 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 83 * Multiple Screens</a> for more information.*/ 84 public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04; 85 86 public static final int SCREENLAYOUT_LONG_MASK = 0x30; 87 public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00; 88 public static final int SCREENLAYOUT_LONG_NO = 0x10; 89 public static final int SCREENLAYOUT_LONG_YES = 0x20; 90 91 /** 92 * Special flag we generate to indicate that the screen layout requires 93 * us to use a compatibility mode for apps that are not modern layout 94 * aware. 95 * @hide 96 */ 97 public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000; 98 99 /** 100 * Bit mask of overall layout of the screen. Currently there are two 101 * fields: 102 * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size 103 * of the screen. They may be one of 104 * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL}, 105 * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}. 106 * 107 * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen 108 * is wider/taller than normal. They may be one of 109 * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}. 110 * 111 * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 112 * Multiple Screens</a> for more information. 113 */ 114 public int screenLayout; 115 116 /** 117 * Check if the Configuration's current {@link #screenLayout} is at 118 * least the given size. 119 * 120 * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL}, 121 * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or 122 * {@link #SCREENLAYOUT_SIZE_XLARGE}. 123 * @return Returns true if the current screen layout size is at least 124 * the given size. 125 */ 126 public boolean isLayoutSizeAtLeast(int size) { 127 int cur = screenLayout&SCREENLAYOUT_SIZE_MASK; 128 if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false; 129 return cur >= size; 130 } 131 132 public static final int TOUCHSCREEN_UNDEFINED = 0; 133 public static final int TOUCHSCREEN_NOTOUCH = 1; 134 public static final int TOUCHSCREEN_STYLUS = 2; 135 public static final int TOUCHSCREEN_FINGER = 3; 136 137 /** 138 * The kind of touch screen attached to the device. 139 * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_STYLUS}, 140 * {@link #TOUCHSCREEN_FINGER}. 141 */ 142 public int touchscreen; 143 144 public static final int KEYBOARD_UNDEFINED = 0; 145 public static final int KEYBOARD_NOKEYS = 1; 146 public static final int KEYBOARD_QWERTY = 2; 147 public static final int KEYBOARD_12KEY = 3; 148 149 /** 150 * The kind of keyboard attached to the device. 151 * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY}, 152 * {@link #KEYBOARD_12KEY}. 153 */ 154 public int keyboard; 155 156 public static final int KEYBOARDHIDDEN_UNDEFINED = 0; 157 public static final int KEYBOARDHIDDEN_NO = 1; 158 public static final int KEYBOARDHIDDEN_YES = 2; 159 /** Constant matching actual resource implementation. {@hide} */ 160 public static final int KEYBOARDHIDDEN_SOFT = 3; 161 162 /** 163 * A flag indicating whether any keyboard is available. Unlike 164 * {@link #hardKeyboardHidden}, this also takes into account a soft 165 * keyboard, so if the hard keyboard is hidden but there is soft 166 * keyboard available, it will be set to NO. Value is one of: 167 * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}. 168 */ 169 public int keyboardHidden; 170 171 public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0; 172 public static final int HARDKEYBOARDHIDDEN_NO = 1; 173 public static final int HARDKEYBOARDHIDDEN_YES = 2; 174 175 /** 176 * A flag indicating whether the hard keyboard has been hidden. This will 177 * be set on a device with a mechanism to hide the keyboard from the 178 * user, when that mechanism is closed. One of: 179 * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}. 180 */ 181 public int hardKeyboardHidden; 182 183 public static final int NAVIGATION_UNDEFINED = 0; 184 public static final int NAVIGATION_NONAV = 1; 185 public static final int NAVIGATION_DPAD = 2; 186 public static final int NAVIGATION_TRACKBALL = 3; 187 public static final int NAVIGATION_WHEEL = 4; 188 189 /** 190 * The kind of navigation method available on the device. 191 * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD}, 192 * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}. 193 */ 194 public int navigation; 195 196 public static final int NAVIGATIONHIDDEN_UNDEFINED = 0; 197 public static final int NAVIGATIONHIDDEN_NO = 1; 198 public static final int NAVIGATIONHIDDEN_YES = 2; 199 200 /** 201 * A flag indicating whether any 5-way or DPAD navigation available. 202 * This will be set on a device with a mechanism to hide the navigation 203 * controls from the user, when that mechanism is closed. One of: 204 * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}. 205 */ 206 public int navigationHidden; 207 208 public static final int ORIENTATION_UNDEFINED = 0; 209 public static final int ORIENTATION_PORTRAIT = 1; 210 public static final int ORIENTATION_LANDSCAPE = 2; 211 public static final int ORIENTATION_SQUARE = 3; 212 213 /** 214 * Overall orientation of the screen. May be one of 215 * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}, 216 * or {@link #ORIENTATION_SQUARE}. 217 */ 218 public int orientation; 219 220 public static final int UI_MODE_TYPE_MASK = 0x0f; 221 public static final int UI_MODE_TYPE_UNDEFINED = 0x00; 222 public static final int UI_MODE_TYPE_NORMAL = 0x01; 223 public static final int UI_MODE_TYPE_DESK = 0x02; 224 public static final int UI_MODE_TYPE_CAR = 0x03; 225 226 public static final int UI_MODE_NIGHT_MASK = 0x30; 227 public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; 228 public static final int UI_MODE_NIGHT_NO = 0x10; 229 public static final int UI_MODE_NIGHT_YES = 0x20; 230 231 /** 232 * Bit mask of the ui mode. Currently there are two fields: 233 * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the 234 * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, 235 * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, 236 * or {@link #UI_MODE_TYPE_CAR}. 237 * 238 * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen 239 * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, 240 * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. 241 */ 242 public int uiMode; 243 244 public static final int SCREEN_WIDTH_DP_UNDEFINED = 0; 245 246 /** 247 * The current width of the available screen space, in dp units. 248 */ 249 public int screenWidthDp; 250 251 public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0; 252 253 /** 254 * The current height of the available screen space, in dp units. 255 */ 256 public int screenHeightDp; 257 258 /** 259 * @hide Internal book-keeping. 260 */ 261 public int seq; 262 263 /** 264 * Construct an invalid Configuration. You must call {@link #setToDefaults} 265 * for this object to be valid. {@more} 266 */ 267 public Configuration() { 268 setToDefaults(); 269 } 270 271 /** 272 * Makes a deep copy suitable for modification. 273 */ 274 public Configuration(Configuration o) { 275 setTo(o); 276 } 277 278 public void setTo(Configuration o) { 279 fontScale = o.fontScale; 280 mcc = o.mcc; 281 mnc = o.mnc; 282 if (o.locale != null) { 283 locale = (Locale) o.locale.clone(); 284 } 285 userSetLocale = o.userSetLocale; 286 touchscreen = o.touchscreen; 287 keyboard = o.keyboard; 288 keyboardHidden = o.keyboardHidden; 289 hardKeyboardHidden = o.hardKeyboardHidden; 290 navigation = o.navigation; 291 navigationHidden = o.navigationHidden; 292 orientation = o.orientation; 293 screenLayout = o.screenLayout; 294 uiMode = o.uiMode; 295 screenWidthDp = o.screenWidthDp; 296 screenHeightDp = o.screenHeightDp; 297 seq = o.seq; 298 } 299 300 public String toString() { 301 StringBuilder sb = new StringBuilder(128); 302 sb.append("{ fnt="); 303 sb.append(fontScale); 304 sb.append(" imsi="); 305 sb.append(mcc); 306 sb.append("/"); 307 sb.append(mnc); 308 if (locale != null) { 309 sb.append(" "); 310 sb.append(locale); 311 } else { 312 sb.append(" (no locale)"); 313 } 314 switch (touchscreen) { 315 case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break; 316 case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break; 317 case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break; 318 case TOUCHSCREEN_FINGER: sb.append(" finger"); break; 319 default: sb.append(" touch="); sb.append(touchscreen); break; 320 } 321 switch (keyboard) { 322 case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break; 323 case KEYBOARD_NOKEYS: sb.append(" -keyb"); break; 324 case KEYBOARD_QWERTY: sb.append(" qwerty"); break; 325 case KEYBOARD_12KEY: sb.append(" 12key"); break; 326 default: sb.append(" keys="); sb.append(keyboard); break; 327 } 328 switch (keyboardHidden) { 329 case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 330 case KEYBOARDHIDDEN_NO: sb.append("/v"); break; 331 case KEYBOARDHIDDEN_YES: sb.append("/h"); break; 332 case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break; 333 default: sb.append("/"); sb.append(keyboardHidden); break; 334 } 335 switch (hardKeyboardHidden) { 336 case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 337 case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break; 338 case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break; 339 default: sb.append("/"); sb.append(hardKeyboardHidden); break; 340 } 341 switch (navigation) { 342 case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break; 343 case NAVIGATION_NONAV: sb.append(" -nav"); break; 344 case NAVIGATION_DPAD: sb.append(" dpad"); break; 345 case NAVIGATION_TRACKBALL: sb.append(" tball"); break; 346 case NAVIGATION_WHEEL: sb.append(" wheel"); break; 347 default: sb.append(" nav="); sb.append(navigation); break; 348 } 349 switch (navigationHidden) { 350 case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?"); break; 351 case NAVIGATIONHIDDEN_NO: sb.append("/v"); break; 352 case NAVIGATIONHIDDEN_YES: sb.append("/h"); break; 353 default: sb.append("/"); sb.append(navigationHidden); break; 354 } 355 switch (orientation) { 356 case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break; 357 case ORIENTATION_LANDSCAPE: sb.append(" land"); break; 358 case ORIENTATION_PORTRAIT: sb.append(" port"); break; 359 default: sb.append(" orien="); sb.append(orientation); break; 360 } 361 switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) { 362 case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?lsize"); break; 363 case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break; 364 case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break; 365 case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break; 366 case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break; 367 default: sb.append(" layoutSize="); 368 sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break; 369 } 370 switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) { 371 case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break; 372 case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break; 373 case SCREENLAYOUT_LONG_YES: sb.append(" long"); break; 374 default: sb.append(" layoutLong="); 375 sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break; 376 } 377 switch ((uiMode&UI_MODE_TYPE_MASK)) { 378 case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break; 379 case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break; 380 case UI_MODE_TYPE_DESK: sb.append(" desk"); break; 381 case UI_MODE_TYPE_CAR: sb.append(" car"); break; 382 default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break; 383 } 384 switch ((uiMode&UI_MODE_NIGHT_MASK)) { 385 case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break; 386 case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break; 387 case UI_MODE_NIGHT_YES: sb.append(" night"); break; 388 default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break; 389 } 390 if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 391 sb.append(" w"); sb.append(screenWidthDp); sb.append("dp"); 392 } else { 393 sb.append("?wdp"); 394 } 395 if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 396 sb.append(" h"); sb.append(screenHeightDp); sb.append("dp"); 397 } else { 398 sb.append("?hdp"); 399 } 400 if (seq != 0) { 401 sb.append(" s."); 402 sb.append(seq); 403 } 404 sb.append('}'); 405 return sb.toString(); 406 } 407 408 /** 409 * Set this object to the system defaults. 410 */ 411 public void setToDefaults() { 412 fontScale = 1; 413 mcc = mnc = 0; 414 locale = null; 415 userSetLocale = false; 416 touchscreen = TOUCHSCREEN_UNDEFINED; 417 keyboard = KEYBOARD_UNDEFINED; 418 keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; 419 hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; 420 navigation = NAVIGATION_UNDEFINED; 421 navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; 422 orientation = ORIENTATION_UNDEFINED; 423 screenLayout = SCREENLAYOUT_SIZE_UNDEFINED; 424 uiMode = UI_MODE_TYPE_UNDEFINED; 425 screenWidthDp = SCREEN_WIDTH_DP_UNDEFINED; 426 screenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED; 427 seq = 0; 428 } 429 430 /** {@hide} */ 431 @Deprecated public void makeDefault() { 432 setToDefaults(); 433 } 434 435 /** 436 * Copy the fields from delta into this Configuration object, keeping 437 * track of which ones have changed. Any undefined fields in 438 * <var>delta</var> are ignored and not copied in to the current 439 * Configuration. 440 * @return Returns a bit mask of the changed fields, as per 441 * {@link #diff}. 442 */ 443 public int updateFrom(Configuration delta) { 444 int changed = 0; 445 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 446 changed |= ActivityInfo.CONFIG_FONT_SCALE; 447 fontScale = delta.fontScale; 448 } 449 if (delta.mcc != 0 && mcc != delta.mcc) { 450 changed |= ActivityInfo.CONFIG_MCC; 451 mcc = delta.mcc; 452 } 453 if (delta.mnc != 0 && mnc != delta.mnc) { 454 changed |= ActivityInfo.CONFIG_MNC; 455 mnc = delta.mnc; 456 } 457 if (delta.locale != null 458 && (locale == null || !locale.equals(delta.locale))) { 459 changed |= ActivityInfo.CONFIG_LOCALE; 460 locale = delta.locale != null 461 ? (Locale) delta.locale.clone() : null; 462 } 463 if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) 464 { 465 userSetLocale = true; 466 changed |= ActivityInfo.CONFIG_LOCALE; 467 } 468 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 469 && touchscreen != delta.touchscreen) { 470 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 471 touchscreen = delta.touchscreen; 472 } 473 if (delta.keyboard != KEYBOARD_UNDEFINED 474 && keyboard != delta.keyboard) { 475 changed |= ActivityInfo.CONFIG_KEYBOARD; 476 keyboard = delta.keyboard; 477 } 478 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 479 && keyboardHidden != delta.keyboardHidden) { 480 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 481 keyboardHidden = delta.keyboardHidden; 482 } 483 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 484 && hardKeyboardHidden != delta.hardKeyboardHidden) { 485 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 486 hardKeyboardHidden = delta.hardKeyboardHidden; 487 } 488 if (delta.navigation != NAVIGATION_UNDEFINED 489 && navigation != delta.navigation) { 490 changed |= ActivityInfo.CONFIG_NAVIGATION; 491 navigation = delta.navigation; 492 } 493 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 494 && navigationHidden != delta.navigationHidden) { 495 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 496 navigationHidden = delta.navigationHidden; 497 } 498 if (delta.orientation != ORIENTATION_UNDEFINED 499 && orientation != delta.orientation) { 500 changed |= ActivityInfo.CONFIG_ORIENTATION; 501 orientation = delta.orientation; 502 } 503 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 504 && screenLayout != delta.screenLayout) { 505 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 506 screenLayout = delta.screenLayout; 507 } 508 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 509 && uiMode != delta.uiMode) { 510 changed |= ActivityInfo.CONFIG_UI_MODE; 511 if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { 512 uiMode = (uiMode&~UI_MODE_TYPE_MASK) 513 | (delta.uiMode&UI_MODE_TYPE_MASK); 514 } 515 if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { 516 uiMode = (uiMode&~UI_MODE_NIGHT_MASK) 517 | (delta.uiMode&UI_MODE_NIGHT_MASK); 518 } 519 } 520 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 521 && screenWidthDp != delta.screenWidthDp) { 522 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 523 screenWidthDp = delta.screenWidthDp; 524 } 525 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 526 && screenHeightDp != delta.screenHeightDp) { 527 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 528 screenHeightDp = delta.screenHeightDp; 529 } 530 531 if (delta.seq != 0) { 532 seq = delta.seq; 533 } 534 535 return changed; 536 } 537 538 /** 539 * Return a bit mask of the differences between this Configuration 540 * object and the given one. Does not change the values of either. Any 541 * undefined fields in <var>delta</var> are ignored. 542 * @return Returns a bit mask indicating which configuration 543 * values has changed, containing any combination of 544 * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE 545 * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, 546 * {@link android.content.pm.ActivityInfo#CONFIG_MCC 547 * PackageManager.ActivityInfo.CONFIG_MCC}, 548 * {@link android.content.pm.ActivityInfo#CONFIG_MNC 549 * PackageManager.ActivityInfo.CONFIG_MNC}, 550 * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE 551 * PackageManager.ActivityInfo.CONFIG_LOCALE}, 552 * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN 553 * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, 554 * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD 555 * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, 556 * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION 557 * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, 558 * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION 559 * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, 560 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT 561 * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or 562 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE 563 * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}. 564 */ 565 public int diff(Configuration delta) { 566 int changed = 0; 567 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 568 changed |= ActivityInfo.CONFIG_FONT_SCALE; 569 } 570 if (delta.mcc != 0 && mcc != delta.mcc) { 571 changed |= ActivityInfo.CONFIG_MCC; 572 } 573 if (delta.mnc != 0 && mnc != delta.mnc) { 574 changed |= ActivityInfo.CONFIG_MNC; 575 } 576 if (delta.locale != null 577 && (locale == null || !locale.equals(delta.locale))) { 578 changed |= ActivityInfo.CONFIG_LOCALE; 579 } 580 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 581 && touchscreen != delta.touchscreen) { 582 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 583 } 584 if (delta.keyboard != KEYBOARD_UNDEFINED 585 && keyboard != delta.keyboard) { 586 changed |= ActivityInfo.CONFIG_KEYBOARD; 587 } 588 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 589 && keyboardHidden != delta.keyboardHidden) { 590 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 591 } 592 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 593 && hardKeyboardHidden != delta.hardKeyboardHidden) { 594 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 595 } 596 if (delta.navigation != NAVIGATION_UNDEFINED 597 && navigation != delta.navigation) { 598 changed |= ActivityInfo.CONFIG_NAVIGATION; 599 } 600 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 601 && navigationHidden != delta.navigationHidden) { 602 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 603 } 604 if (delta.orientation != ORIENTATION_UNDEFINED 605 && orientation != delta.orientation) { 606 changed |= ActivityInfo.CONFIG_ORIENTATION; 607 } 608 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 609 && screenLayout != delta.screenLayout) { 610 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 611 } 612 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 613 && uiMode != delta.uiMode) { 614 changed |= ActivityInfo.CONFIG_UI_MODE; 615 } 616 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 617 && screenWidthDp != delta.screenWidthDp) { 618 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 619 } 620 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 621 && screenHeightDp != delta.screenHeightDp) { 622 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 623 } 624 625 return changed; 626 } 627 628 /** 629 * Determine if a new resource needs to be loaded from the bit set of 630 * configuration changes returned by {@link #updateFrom(Configuration)}. 631 * 632 * @param configChanges The mask of changes configurations as returned by 633 * {@link #updateFrom(Configuration)}. 634 * @param interestingChanges The configuration changes that the resource 635 * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. 636 * 637 * @return Return true if the resource needs to be loaded, else false. 638 */ 639 public static boolean needNewResources(int configChanges, int interestingChanges) { 640 return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; 641 } 642 643 /** 644 * @hide Return true if the sequence of 'other' is better than this. Assumes 645 * that 'this' is your current sequence and 'other' is a new one you have 646 * received some how and want to compare with what you have. 647 */ 648 public boolean isOtherSeqNewer(Configuration other) { 649 if (other == null) { 650 // Sanity check. 651 return false; 652 } 653 if (other.seq == 0) { 654 // If the other sequence is not specified, then we must assume 655 // it is newer since we don't know any better. 656 return true; 657 } 658 if (seq == 0) { 659 // If this sequence is not specified, then we also consider the 660 // other is better. Yes we have a preference for other. Sue us. 661 return true; 662 } 663 int diff = other.seq - seq; 664 if (diff > 0x10000) { 665 // If there has been a sufficiently large jump, assume the 666 // sequence has wrapped around. 667 return false; 668 } 669 return diff > 0; 670 } 671 672 /** 673 * Parcelable methods 674 */ 675 public int describeContents() { 676 return 0; 677 } 678 679 public void writeToParcel(Parcel dest, int flags) { 680 dest.writeFloat(fontScale); 681 dest.writeInt(mcc); 682 dest.writeInt(mnc); 683 if (locale == null) { 684 dest.writeInt(0); 685 } else { 686 dest.writeInt(1); 687 dest.writeString(locale.getLanguage()); 688 dest.writeString(locale.getCountry()); 689 dest.writeString(locale.getVariant()); 690 } 691 if(userSetLocale) { 692 dest.writeInt(1); 693 } else { 694 dest.writeInt(0); 695 } 696 dest.writeInt(touchscreen); 697 dest.writeInt(keyboard); 698 dest.writeInt(keyboardHidden); 699 dest.writeInt(hardKeyboardHidden); 700 dest.writeInt(navigation); 701 dest.writeInt(navigationHidden); 702 dest.writeInt(orientation); 703 dest.writeInt(screenLayout); 704 dest.writeInt(uiMode); 705 dest.writeInt(screenWidthDp); 706 dest.writeInt(screenHeightDp); 707 dest.writeInt(seq); 708 } 709 710 public void readFromParcel(Parcel source) { 711 fontScale = source.readFloat(); 712 mcc = source.readInt(); 713 mnc = source.readInt(); 714 if (source.readInt() != 0) { 715 locale = new Locale(source.readString(), source.readString(), 716 source.readString()); 717 } 718 userSetLocale = (source.readInt()==1); 719 touchscreen = source.readInt(); 720 keyboard = source.readInt(); 721 keyboardHidden = source.readInt(); 722 hardKeyboardHidden = source.readInt(); 723 navigation = source.readInt(); 724 navigationHidden = source.readInt(); 725 orientation = source.readInt(); 726 screenLayout = source.readInt(); 727 uiMode = source.readInt(); 728 screenWidthDp = source.readInt(); 729 screenHeightDp = source.readInt(); 730 seq = source.readInt(); 731 } 732 733 public static final Parcelable.Creator<Configuration> CREATOR 734 = new Parcelable.Creator<Configuration>() { 735 public Configuration createFromParcel(Parcel source) { 736 return new Configuration(source); 737 } 738 739 public Configuration[] newArray(int size) { 740 return new Configuration[size]; 741 } 742 }; 743 744 /** 745 * Construct this Configuration object, reading from the Parcel. 746 */ 747 private Configuration(Parcel source) { 748 readFromParcel(source); 749 } 750 751 public int compareTo(Configuration that) { 752 int n; 753 float a = this.fontScale; 754 float b = that.fontScale; 755 if (a < b) return -1; 756 if (a > b) return 1; 757 n = this.mcc - that.mcc; 758 if (n != 0) return n; 759 n = this.mnc - that.mnc; 760 if (n != 0) return n; 761 if (this.locale == null) { 762 if (that.locale != null) return 1; 763 } else if (that.locale == null) { 764 return -1; 765 } else { 766 n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); 767 if (n != 0) return n; 768 n = this.locale.getCountry().compareTo(that.locale.getCountry()); 769 if (n != 0) return n; 770 n = this.locale.getVariant().compareTo(that.locale.getVariant()); 771 if (n != 0) return n; 772 } 773 n = this.touchscreen - that.touchscreen; 774 if (n != 0) return n; 775 n = this.keyboard - that.keyboard; 776 if (n != 0) return n; 777 n = this.keyboardHidden - that.keyboardHidden; 778 if (n != 0) return n; 779 n = this.hardKeyboardHidden - that.hardKeyboardHidden; 780 if (n != 0) return n; 781 n = this.navigation - that.navigation; 782 if (n != 0) return n; 783 n = this.navigationHidden - that.navigationHidden; 784 if (n != 0) return n; 785 n = this.orientation - that.orientation; 786 if (n != 0) return n; 787 n = this.screenLayout - that.screenLayout; 788 if (n != 0) return n; 789 n = this.uiMode - that.uiMode; 790 if (n != 0) return n; 791 n = this.screenWidthDp - that.screenWidthDp; 792 if (n != 0) return n; 793 n = this.screenHeightDp - that.screenHeightDp; 794 //if (n != 0) return n; 795 return n; 796 } 797 798 public boolean equals(Configuration that) { 799 if (that == null) return false; 800 if (that == this) return true; 801 return this.compareTo(that) == 0; 802 } 803 804 public boolean equals(Object that) { 805 try { 806 return equals((Configuration)that); 807 } catch (ClassCastException e) { 808 } 809 return false; 810 } 811 812 public int hashCode() { 813 return ((int)this.fontScale) + this.mcc + this.mnc 814 + (this.locale != null ? this.locale.hashCode() : 0) 815 + this.touchscreen 816 + this.keyboard + this.keyboardHidden + this.hardKeyboardHidden 817 + this.navigation + this.navigationHidden 818 + this.orientation + this.screenLayout + this.uiMode 819 + this.screenWidthDp + this.screenHeightDp; 820 } 821} 822