Configuration.java revision 69cb87576ba163b61bb0e6477a3b7c57a9b11d40
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import android.content.pm.ActivityInfo; 20import android.os.Parcel; 21import android.os.Parcelable; 22 23import java.util.Locale; 24 25/** 26 * This class describes all device configuration information that can 27 * impact the resources the application retrieves. This includes both 28 * user-specified configuration options (locale and scaling) as well 29 * as device configurations (such as input modes, screen size and screen orientation). 30 * <p>You can acquire this object from {@link Resources}, using {@link 31 * Resources#getConfiguration}. Thus, from an activity, you can get it by chaining the request 32 * with {@link android.app.Activity#getResources}:</p> 33 * <pre>Configuration config = getResources().getConfiguration();</pre> 34 */ 35public final class Configuration implements Parcelable, Comparable<Configuration> { 36 /** 37 * Current user preference for the scaling factor for fonts, relative 38 * to the base density scaling. 39 */ 40 public float fontScale; 41 42 /** 43 * IMSI MCC (Mobile Country Code). 0 if undefined. 44 */ 45 public int mcc; 46 47 /** 48 * IMSI MNC (Mobile Network Code). 0 if undefined. 49 */ 50 public int mnc; 51 52 /** 53 * Current user preference for the locale. 54 */ 55 public Locale locale; 56 57 /** 58 * Locale should persist on setting. This is hidden because it is really 59 * questionable whether this is the right way to expose the functionality. 60 * @hide 61 */ 62 public boolean userSetLocale; 63 64 /** Constant for {@link #screenLayout}: bits that encode the size. */ 65 public static final int SCREENLAYOUT_SIZE_MASK = 0x0f; 66 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 67 * value indicating that no size has been set. */ 68 public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00; 69 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 70 * value indicating the screen is at least approximately 320x426 dp units. 71 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 72 * Multiple Screens</a> for more information. */ 73 public static final int SCREENLAYOUT_SIZE_SMALL = 0x01; 74 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 75 * value indicating the screen is at least approximately 320x470 dp units. 76 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 77 * Multiple Screens</a> for more information. */ 78 public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02; 79 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 80 * value indicating the screen is at least approximately 480x640 dp units. 81 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 82 * Multiple Screens</a> for more information. */ 83 public static final int SCREENLAYOUT_SIZE_LARGE = 0x03; 84 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 85 * value indicating the screen is at least approximately 720x960 dp units. 86 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 87 * Multiple Screens</a> for more information.*/ 88 public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04; 89 90 public static final int SCREENLAYOUT_LONG_MASK = 0x30; 91 public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00; 92 public static final int SCREENLAYOUT_LONG_NO = 0x10; 93 public static final int SCREENLAYOUT_LONG_YES = 0x20; 94 95 /** 96 * Special flag we generate to indicate that the screen layout requires 97 * us to use a compatibility mode for apps that are not modern layout 98 * aware. 99 * @hide 100 */ 101 public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000; 102 103 /** 104 * Bit mask of overall layout of the screen. Currently there are two 105 * fields: 106 * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size 107 * of the screen. They may be one of 108 * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL}, 109 * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}. 110 * 111 * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen 112 * is wider/taller than normal. They may be one of 113 * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}. 114 * 115 * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 116 * Multiple Screens</a> for more information. 117 */ 118 public int screenLayout; 119 120 /** 121 * Check if the Configuration's current {@link #screenLayout} is at 122 * least the given size. 123 * 124 * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL}, 125 * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or 126 * {@link #SCREENLAYOUT_SIZE_XLARGE}. 127 * @return Returns true if the current screen layout size is at least 128 * the given size. 129 */ 130 public boolean isLayoutSizeAtLeast(int size) { 131 int cur = screenLayout&SCREENLAYOUT_SIZE_MASK; 132 if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false; 133 return cur >= size; 134 } 135 136 public static final int TOUCHSCREEN_UNDEFINED = 0; 137 public static final int TOUCHSCREEN_NOTOUCH = 1; 138 public static final int TOUCHSCREEN_STYLUS = 2; 139 public static final int TOUCHSCREEN_FINGER = 3; 140 141 /** 142 * The kind of touch screen attached to the device. 143 * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_STYLUS}, 144 * {@link #TOUCHSCREEN_FINGER}. 145 */ 146 public int touchscreen; 147 148 public static final int KEYBOARD_UNDEFINED = 0; 149 public static final int KEYBOARD_NOKEYS = 1; 150 public static final int KEYBOARD_QWERTY = 2; 151 public static final int KEYBOARD_12KEY = 3; 152 153 /** 154 * The kind of keyboard attached to the device. 155 * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY}, 156 * {@link #KEYBOARD_12KEY}. 157 */ 158 public int keyboard; 159 160 public static final int KEYBOARDHIDDEN_UNDEFINED = 0; 161 public static final int KEYBOARDHIDDEN_NO = 1; 162 public static final int KEYBOARDHIDDEN_YES = 2; 163 /** Constant matching actual resource implementation. {@hide} */ 164 public static final int KEYBOARDHIDDEN_SOFT = 3; 165 166 /** 167 * A flag indicating whether any keyboard is available. Unlike 168 * {@link #hardKeyboardHidden}, this also takes into account a soft 169 * keyboard, so if the hard keyboard is hidden but there is soft 170 * keyboard available, it will be set to NO. Value is one of: 171 * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}. 172 */ 173 public int keyboardHidden; 174 175 public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0; 176 public static final int HARDKEYBOARDHIDDEN_NO = 1; 177 public static final int HARDKEYBOARDHIDDEN_YES = 2; 178 179 /** 180 * A flag indicating whether the hard keyboard has been hidden. This will 181 * be set on a device with a mechanism to hide the keyboard from the 182 * user, when that mechanism is closed. One of: 183 * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}. 184 */ 185 public int hardKeyboardHidden; 186 187 public static final int NAVIGATION_UNDEFINED = 0; 188 public static final int NAVIGATION_NONAV = 1; 189 public static final int NAVIGATION_DPAD = 2; 190 public static final int NAVIGATION_TRACKBALL = 3; 191 public static final int NAVIGATION_WHEEL = 4; 192 193 /** 194 * The kind of navigation method available on the device. 195 * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD}, 196 * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}. 197 */ 198 public int navigation; 199 200 public static final int NAVIGATIONHIDDEN_UNDEFINED = 0; 201 public static final int NAVIGATIONHIDDEN_NO = 1; 202 public static final int NAVIGATIONHIDDEN_YES = 2; 203 204 /** 205 * A flag indicating whether any 5-way or DPAD navigation available. 206 * This will be set on a device with a mechanism to hide the navigation 207 * controls from the user, when that mechanism is closed. One of: 208 * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}. 209 */ 210 public int navigationHidden; 211 212 public static final int ORIENTATION_UNDEFINED = 0; 213 public static final int ORIENTATION_PORTRAIT = 1; 214 public static final int ORIENTATION_LANDSCAPE = 2; 215 public static final int ORIENTATION_SQUARE = 3; 216 217 /** 218 * Overall orientation of the screen. May be one of 219 * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}, 220 * or {@link #ORIENTATION_SQUARE}. 221 */ 222 public int orientation; 223 224 public static final int UI_MODE_TYPE_MASK = 0x0f; 225 public static final int UI_MODE_TYPE_UNDEFINED = 0x00; 226 public static final int UI_MODE_TYPE_NORMAL = 0x01; 227 public static final int UI_MODE_TYPE_DESK = 0x02; 228 public static final int UI_MODE_TYPE_CAR = 0x03; 229 230 public static final int UI_MODE_NIGHT_MASK = 0x30; 231 public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; 232 public static final int UI_MODE_NIGHT_NO = 0x10; 233 public static final int UI_MODE_NIGHT_YES = 0x20; 234 235 /** 236 * Bit mask of the ui mode. Currently there are two fields: 237 * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the 238 * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, 239 * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, 240 * or {@link #UI_MODE_TYPE_CAR}. 241 * 242 * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen 243 * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, 244 * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. 245 */ 246 public int uiMode; 247 248 public static final int SCREEN_WIDTH_DP_UNDEFINED = 0; 249 250 /** 251 * The current width of the available screen space, in dp units. 252 */ 253 public int screenWidthDp; 254 255 public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0; 256 257 /** 258 * The current height of the available screen space, in dp units. 259 */ 260 public int screenHeightDp; 261 262 public static final int SMALLEST_SCREEN_WIDTH_DP_UNDEFINED = 0; 263 264 /** 265 * The smallest screen size an application will see in normal operation. 266 * This is the smallest value of both screenWidthDp and screenHeightDp 267 * in both portrait and landscape. 268 */ 269 public int smallestScreenWidthDp; 270 271 /** 272 * @hide Internal book-keeping. 273 */ 274 public int seq; 275 276 /** 277 * Construct an invalid Configuration. You must call {@link #setToDefaults} 278 * for this object to be valid. {@more} 279 */ 280 public Configuration() { 281 setToDefaults(); 282 } 283 284 /** 285 * Makes a deep copy suitable for modification. 286 */ 287 public Configuration(Configuration o) { 288 setTo(o); 289 } 290 291 public void setTo(Configuration o) { 292 fontScale = o.fontScale; 293 mcc = o.mcc; 294 mnc = o.mnc; 295 if (o.locale != null) { 296 locale = (Locale) o.locale.clone(); 297 } 298 userSetLocale = o.userSetLocale; 299 touchscreen = o.touchscreen; 300 keyboard = o.keyboard; 301 keyboardHidden = o.keyboardHidden; 302 hardKeyboardHidden = o.hardKeyboardHidden; 303 navigation = o.navigation; 304 navigationHidden = o.navigationHidden; 305 orientation = o.orientation; 306 screenLayout = o.screenLayout; 307 uiMode = o.uiMode; 308 screenWidthDp = o.screenWidthDp; 309 screenHeightDp = o.screenHeightDp; 310 smallestScreenWidthDp = o.smallestScreenWidthDp; 311 seq = o.seq; 312 } 313 314 public String toString() { 315 StringBuilder sb = new StringBuilder(128); 316 sb.append("{"); 317 sb.append(fontScale); 318 sb.append("x imsi="); 319 sb.append(mcc); 320 sb.append("/"); 321 sb.append(mnc); 322 if (locale != null) { 323 sb.append(" "); 324 sb.append(locale); 325 } else { 326 sb.append(" (no locale)"); 327 } 328 if (smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 329 sb.append(" sw"); sb.append(smallestScreenWidthDp); sb.append("dp"); 330 } else { 331 sb.append("?swdp"); 332 } 333 if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 334 sb.append(" w"); sb.append(screenWidthDp); sb.append("dp"); 335 } else { 336 sb.append("?wdp"); 337 } 338 if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 339 sb.append(" h"); sb.append(screenHeightDp); sb.append("dp"); 340 } else { 341 sb.append("?hdp"); 342 } 343 switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) { 344 case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?lsize"); break; 345 case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break; 346 case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break; 347 case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break; 348 case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break; 349 default: sb.append(" layoutSize="); 350 sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break; 351 } 352 switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) { 353 case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break; 354 case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break; 355 case SCREENLAYOUT_LONG_YES: sb.append(" long"); break; 356 default: sb.append(" layoutLong="); 357 sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break; 358 } 359 switch (orientation) { 360 case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break; 361 case ORIENTATION_LANDSCAPE: sb.append(" land"); break; 362 case ORIENTATION_PORTRAIT: sb.append(" port"); break; 363 default: sb.append(" orien="); sb.append(orientation); break; 364 } 365 switch ((uiMode&UI_MODE_TYPE_MASK)) { 366 case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break; 367 case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break; 368 case UI_MODE_TYPE_DESK: sb.append(" desk"); break; 369 case UI_MODE_TYPE_CAR: sb.append(" car"); break; 370 default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break; 371 } 372 switch ((uiMode&UI_MODE_NIGHT_MASK)) { 373 case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break; 374 case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break; 375 case UI_MODE_NIGHT_YES: sb.append(" night"); break; 376 default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break; 377 } 378 switch (touchscreen) { 379 case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break; 380 case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break; 381 case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break; 382 case TOUCHSCREEN_FINGER: sb.append(" finger"); break; 383 default: sb.append(" touch="); sb.append(touchscreen); break; 384 } 385 switch (keyboard) { 386 case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break; 387 case KEYBOARD_NOKEYS: sb.append(" -keyb"); break; 388 case KEYBOARD_QWERTY: sb.append(" qwerty"); break; 389 case KEYBOARD_12KEY: sb.append(" 12key"); break; 390 default: sb.append(" keys="); sb.append(keyboard); break; 391 } 392 switch (keyboardHidden) { 393 case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 394 case KEYBOARDHIDDEN_NO: sb.append("/v"); break; 395 case KEYBOARDHIDDEN_YES: sb.append("/h"); break; 396 case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break; 397 default: sb.append("/"); sb.append(keyboardHidden); break; 398 } 399 switch (hardKeyboardHidden) { 400 case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 401 case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break; 402 case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break; 403 default: sb.append("/"); sb.append(hardKeyboardHidden); break; 404 } 405 switch (navigation) { 406 case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break; 407 case NAVIGATION_NONAV: sb.append(" -nav"); break; 408 case NAVIGATION_DPAD: sb.append(" dpad"); break; 409 case NAVIGATION_TRACKBALL: sb.append(" tball"); break; 410 case NAVIGATION_WHEEL: sb.append(" wheel"); break; 411 default: sb.append(" nav="); sb.append(navigation); break; 412 } 413 switch (navigationHidden) { 414 case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?"); break; 415 case NAVIGATIONHIDDEN_NO: sb.append("/v"); break; 416 case NAVIGATIONHIDDEN_YES: sb.append("/h"); break; 417 default: sb.append("/"); sb.append(navigationHidden); break; 418 } 419 if (seq != 0) { 420 sb.append(" s."); 421 sb.append(seq); 422 } 423 sb.append('}'); 424 return sb.toString(); 425 } 426 427 /** 428 * Set this object to the system defaults. 429 */ 430 public void setToDefaults() { 431 fontScale = 1; 432 mcc = mnc = 0; 433 locale = null; 434 userSetLocale = false; 435 touchscreen = TOUCHSCREEN_UNDEFINED; 436 keyboard = KEYBOARD_UNDEFINED; 437 keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; 438 hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; 439 navigation = NAVIGATION_UNDEFINED; 440 navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; 441 orientation = ORIENTATION_UNDEFINED; 442 screenLayout = SCREENLAYOUT_SIZE_UNDEFINED; 443 uiMode = UI_MODE_TYPE_UNDEFINED; 444 screenWidthDp = SCREEN_WIDTH_DP_UNDEFINED; 445 screenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED; 446 smallestScreenWidthDp = SMALLEST_SCREEN_WIDTH_DP_UNDEFINED; 447 seq = 0; 448 } 449 450 /** {@hide} */ 451 @Deprecated public void makeDefault() { 452 setToDefaults(); 453 } 454 455 /** 456 * Copy the fields from delta into this Configuration object, keeping 457 * track of which ones have changed. Any undefined fields in 458 * <var>delta</var> are ignored and not copied in to the current 459 * Configuration. 460 * @return Returns a bit mask of the changed fields, as per 461 * {@link #diff}. 462 */ 463 public int updateFrom(Configuration delta) { 464 int changed = 0; 465 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 466 changed |= ActivityInfo.CONFIG_FONT_SCALE; 467 fontScale = delta.fontScale; 468 } 469 if (delta.mcc != 0 && mcc != delta.mcc) { 470 changed |= ActivityInfo.CONFIG_MCC; 471 mcc = delta.mcc; 472 } 473 if (delta.mnc != 0 && mnc != delta.mnc) { 474 changed |= ActivityInfo.CONFIG_MNC; 475 mnc = delta.mnc; 476 } 477 if (delta.locale != null 478 && (locale == null || !locale.equals(delta.locale))) { 479 changed |= ActivityInfo.CONFIG_LOCALE; 480 locale = delta.locale != null 481 ? (Locale) delta.locale.clone() : null; 482 } 483 if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) 484 { 485 userSetLocale = true; 486 changed |= ActivityInfo.CONFIG_LOCALE; 487 } 488 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 489 && touchscreen != delta.touchscreen) { 490 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 491 touchscreen = delta.touchscreen; 492 } 493 if (delta.keyboard != KEYBOARD_UNDEFINED 494 && keyboard != delta.keyboard) { 495 changed |= ActivityInfo.CONFIG_KEYBOARD; 496 keyboard = delta.keyboard; 497 } 498 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 499 && keyboardHidden != delta.keyboardHidden) { 500 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 501 keyboardHidden = delta.keyboardHidden; 502 } 503 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 504 && hardKeyboardHidden != delta.hardKeyboardHidden) { 505 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 506 hardKeyboardHidden = delta.hardKeyboardHidden; 507 } 508 if (delta.navigation != NAVIGATION_UNDEFINED 509 && navigation != delta.navigation) { 510 changed |= ActivityInfo.CONFIG_NAVIGATION; 511 navigation = delta.navigation; 512 } 513 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 514 && navigationHidden != delta.navigationHidden) { 515 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 516 navigationHidden = delta.navigationHidden; 517 } 518 if (delta.orientation != ORIENTATION_UNDEFINED 519 && orientation != delta.orientation) { 520 changed |= ActivityInfo.CONFIG_ORIENTATION; 521 orientation = delta.orientation; 522 } 523 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 524 && screenLayout != delta.screenLayout) { 525 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 526 screenLayout = delta.screenLayout; 527 } 528 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 529 && uiMode != delta.uiMode) { 530 changed |= ActivityInfo.CONFIG_UI_MODE; 531 if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { 532 uiMode = (uiMode&~UI_MODE_TYPE_MASK) 533 | (delta.uiMode&UI_MODE_TYPE_MASK); 534 } 535 if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { 536 uiMode = (uiMode&~UI_MODE_NIGHT_MASK) 537 | (delta.uiMode&UI_MODE_NIGHT_MASK); 538 } 539 } 540 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 541 && screenWidthDp != delta.screenWidthDp) { 542 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 543 screenWidthDp = delta.screenWidthDp; 544 } 545 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 546 && screenHeightDp != delta.screenHeightDp) { 547 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 548 screenHeightDp = delta.screenHeightDp; 549 } 550 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED 551 && smallestScreenWidthDp != delta.smallestScreenWidthDp) { 552 changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; 553 smallestScreenWidthDp = delta.smallestScreenWidthDp; 554 } 555 556 if (delta.seq != 0) { 557 seq = delta.seq; 558 } 559 560 return changed; 561 } 562 563 /** 564 * Return a bit mask of the differences between this Configuration 565 * object and the given one. Does not change the values of either. Any 566 * undefined fields in <var>delta</var> are ignored. 567 * @return Returns a bit mask indicating which configuration 568 * values has changed, containing any combination of 569 * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE 570 * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, 571 * {@link android.content.pm.ActivityInfo#CONFIG_MCC 572 * PackageManager.ActivityInfo.CONFIG_MCC}, 573 * {@link android.content.pm.ActivityInfo#CONFIG_MNC 574 * PackageManager.ActivityInfo.CONFIG_MNC}, 575 * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE 576 * PackageManager.ActivityInfo.CONFIG_LOCALE}, 577 * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN 578 * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, 579 * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD 580 * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, 581 * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION 582 * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, 583 * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION 584 * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, 585 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT 586 * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or 587 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE 588 * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}, or 589 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE 590 * PackageManager.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE}. 591 */ 592 public int diff(Configuration delta) { 593 int changed = 0; 594 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 595 changed |= ActivityInfo.CONFIG_FONT_SCALE; 596 } 597 if (delta.mcc != 0 && mcc != delta.mcc) { 598 changed |= ActivityInfo.CONFIG_MCC; 599 } 600 if (delta.mnc != 0 && mnc != delta.mnc) { 601 changed |= ActivityInfo.CONFIG_MNC; 602 } 603 if (delta.locale != null 604 && (locale == null || !locale.equals(delta.locale))) { 605 changed |= ActivityInfo.CONFIG_LOCALE; 606 } 607 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 608 && touchscreen != delta.touchscreen) { 609 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 610 } 611 if (delta.keyboard != KEYBOARD_UNDEFINED 612 && keyboard != delta.keyboard) { 613 changed |= ActivityInfo.CONFIG_KEYBOARD; 614 } 615 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 616 && keyboardHidden != delta.keyboardHidden) { 617 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 618 } 619 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 620 && hardKeyboardHidden != delta.hardKeyboardHidden) { 621 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 622 } 623 if (delta.navigation != NAVIGATION_UNDEFINED 624 && navigation != delta.navigation) { 625 changed |= ActivityInfo.CONFIG_NAVIGATION; 626 } 627 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 628 && navigationHidden != delta.navigationHidden) { 629 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 630 } 631 if (delta.orientation != ORIENTATION_UNDEFINED 632 && orientation != delta.orientation) { 633 changed |= ActivityInfo.CONFIG_ORIENTATION; 634 } 635 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 636 && screenLayout != delta.screenLayout) { 637 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 638 } 639 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 640 && uiMode != delta.uiMode) { 641 changed |= ActivityInfo.CONFIG_UI_MODE; 642 } 643 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 644 && screenWidthDp != delta.screenWidthDp) { 645 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 646 } 647 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 648 && screenHeightDp != delta.screenHeightDp) { 649 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 650 } 651 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED 652 && smallestScreenWidthDp != delta.smallestScreenWidthDp) { 653 changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; 654 } 655 656 return changed; 657 } 658 659 /** 660 * Determine if a new resource needs to be loaded from the bit set of 661 * configuration changes returned by {@link #updateFrom(Configuration)}. 662 * 663 * @param configChanges The mask of changes configurations as returned by 664 * {@link #updateFrom(Configuration)}. 665 * @param interestingChanges The configuration changes that the resource 666 * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. 667 * 668 * @return Return true if the resource needs to be loaded, else false. 669 */ 670 public static boolean needNewResources(int configChanges, int interestingChanges) { 671 return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; 672 } 673 674 /** 675 * @hide Return true if the sequence of 'other' is better than this. Assumes 676 * that 'this' is your current sequence and 'other' is a new one you have 677 * received some how and want to compare with what you have. 678 */ 679 public boolean isOtherSeqNewer(Configuration other) { 680 if (other == null) { 681 // Sanity check. 682 return false; 683 } 684 if (other.seq == 0) { 685 // If the other sequence is not specified, then we must assume 686 // it is newer since we don't know any better. 687 return true; 688 } 689 if (seq == 0) { 690 // If this sequence is not specified, then we also consider the 691 // other is better. Yes we have a preference for other. Sue us. 692 return true; 693 } 694 int diff = other.seq - seq; 695 if (diff > 0x10000) { 696 // If there has been a sufficiently large jump, assume the 697 // sequence has wrapped around. 698 return false; 699 } 700 return diff > 0; 701 } 702 703 /** 704 * Parcelable methods 705 */ 706 public int describeContents() { 707 return 0; 708 } 709 710 public void writeToParcel(Parcel dest, int flags) { 711 dest.writeFloat(fontScale); 712 dest.writeInt(mcc); 713 dest.writeInt(mnc); 714 if (locale == null) { 715 dest.writeInt(0); 716 } else { 717 dest.writeInt(1); 718 dest.writeString(locale.getLanguage()); 719 dest.writeString(locale.getCountry()); 720 dest.writeString(locale.getVariant()); 721 } 722 if(userSetLocale) { 723 dest.writeInt(1); 724 } else { 725 dest.writeInt(0); 726 } 727 dest.writeInt(touchscreen); 728 dest.writeInt(keyboard); 729 dest.writeInt(keyboardHidden); 730 dest.writeInt(hardKeyboardHidden); 731 dest.writeInt(navigation); 732 dest.writeInt(navigationHidden); 733 dest.writeInt(orientation); 734 dest.writeInt(screenLayout); 735 dest.writeInt(uiMode); 736 dest.writeInt(screenWidthDp); 737 dest.writeInt(screenHeightDp); 738 dest.writeInt(smallestScreenWidthDp); 739 dest.writeInt(seq); 740 } 741 742 public void readFromParcel(Parcel source) { 743 fontScale = source.readFloat(); 744 mcc = source.readInt(); 745 mnc = source.readInt(); 746 if (source.readInt() != 0) { 747 locale = new Locale(source.readString(), source.readString(), 748 source.readString()); 749 } 750 userSetLocale = (source.readInt()==1); 751 touchscreen = source.readInt(); 752 keyboard = source.readInt(); 753 keyboardHidden = source.readInt(); 754 hardKeyboardHidden = source.readInt(); 755 navigation = source.readInt(); 756 navigationHidden = source.readInt(); 757 orientation = source.readInt(); 758 screenLayout = source.readInt(); 759 uiMode = source.readInt(); 760 screenWidthDp = source.readInt(); 761 screenHeightDp = source.readInt(); 762 smallestScreenWidthDp = source.readInt(); 763 seq = source.readInt(); 764 } 765 766 public static final Parcelable.Creator<Configuration> CREATOR 767 = new Parcelable.Creator<Configuration>() { 768 public Configuration createFromParcel(Parcel source) { 769 return new Configuration(source); 770 } 771 772 public Configuration[] newArray(int size) { 773 return new Configuration[size]; 774 } 775 }; 776 777 /** 778 * Construct this Configuration object, reading from the Parcel. 779 */ 780 private Configuration(Parcel source) { 781 readFromParcel(source); 782 } 783 784 public int compareTo(Configuration that) { 785 int n; 786 float a = this.fontScale; 787 float b = that.fontScale; 788 if (a < b) return -1; 789 if (a > b) return 1; 790 n = this.mcc - that.mcc; 791 if (n != 0) return n; 792 n = this.mnc - that.mnc; 793 if (n != 0) return n; 794 if (this.locale == null) { 795 if (that.locale != null) return 1; 796 } else if (that.locale == null) { 797 return -1; 798 } else { 799 n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); 800 if (n != 0) return n; 801 n = this.locale.getCountry().compareTo(that.locale.getCountry()); 802 if (n != 0) return n; 803 n = this.locale.getVariant().compareTo(that.locale.getVariant()); 804 if (n != 0) return n; 805 } 806 n = this.touchscreen - that.touchscreen; 807 if (n != 0) return n; 808 n = this.keyboard - that.keyboard; 809 if (n != 0) return n; 810 n = this.keyboardHidden - that.keyboardHidden; 811 if (n != 0) return n; 812 n = this.hardKeyboardHidden - that.hardKeyboardHidden; 813 if (n != 0) return n; 814 n = this.navigation - that.navigation; 815 if (n != 0) return n; 816 n = this.navigationHidden - that.navigationHidden; 817 if (n != 0) return n; 818 n = this.orientation - that.orientation; 819 if (n != 0) return n; 820 n = this.screenLayout - that.screenLayout; 821 if (n != 0) return n; 822 n = this.uiMode - that.uiMode; 823 if (n != 0) return n; 824 n = this.screenWidthDp - that.screenWidthDp; 825 if (n != 0) return n; 826 n = this.screenHeightDp - that.screenHeightDp; 827 if (n != 0) return n; 828 n = this.smallestScreenWidthDp - that.smallestScreenWidthDp; 829 //if (n != 0) return n; 830 return n; 831 } 832 833 public boolean equals(Configuration that) { 834 if (that == null) return false; 835 if (that == this) return true; 836 return this.compareTo(that) == 0; 837 } 838 839 public boolean equals(Object that) { 840 try { 841 return equals((Configuration)that); 842 } catch (ClassCastException e) { 843 } 844 return false; 845 } 846 847 public int hashCode() { 848 int result = 17; 849 result = 31 * result + Float.floatToIntBits(fontScale); 850 result = 31 * result + mcc; 851 result = 31 * result + mnc; 852 result = 31 * result + (locale != null ? locale.hashCode() : 0); 853 result = 31 * result + touchscreen; 854 result = 31 * result + keyboard; 855 result = 31 * result + keyboardHidden; 856 result = 31 * result + hardKeyboardHidden; 857 result = 31 * result + navigation; 858 result = 31 * result + navigationHidden; 859 result = 31 * result + orientation; 860 result = 31 * result + screenLayout; 861 result = 31 * result + uiMode; 862 result = 31 * result + screenWidthDp; 863 result = 31 * result + screenHeightDp; 864 result = 31 * result + smallestScreenWidthDp; 865 return result; 866 } 867} 868