1page.title=SDK Platforms Release Notes 2 3@jd:body 4 5<div id="qv-wrapper"> 6<div id="qv"> 7 8 9<h2>See Also</h2> 10<ol> 11 <li><a href="{@docRoot}about/versions/kitkat.html">KitKat 12Highlights and APIs</a></li> 13 <li><a href="{@docRoot}about/versions/jelly-bean.html">Jelly Bean 14Highlights and APIs</a></li> 15 <li><a href="{@docRoot}about/versions/android-4.0-highlights.html">Ice Cream Sandwich 16Highlights and APIs</a></li> 17</ol> 18 19</div> 20</div> 21 22 23 24<p>This document provides release information about the SDK Platform packages required 25for app development. If you want details about the features and APIs added in each Android 26version, instead read the highlights in the <a href="{@docRoot}about/index.html">About</a> 27section.</p> 28 29<p>In order to compile your application against a particular version of Android, you must use the 30<a href="{@docRoot}tools/help/sdk-manager.html">SDK Manager</a> to download and install the SDK 31Platform for that release. If you want to test your application on an emulator, you must also 32download at least one System Image for that Android version.</p> 33 34 35<p>Each platform release includes system images that support a specific processor architecture, 36such as ARM EABI, Intel x86 or MIPS. Platform releases also include a system image that contains 37Google APIs. The <a href="{@docRoot}tools/help/sdk-manager.html">SDK Manager</a> lists available 38platform system images under each platform version header, for example:</p> 39 40<ul> 41 <li>ARM EABI v7a System Image</li> 42 <li>Intel x86 Atom System Image</li> 43 <li>MIPS System Image</li> 44 <li>Google APIs</li> 45</ul> 46 47<p>To determine what revisions of an Android platform you have installed, refer to the 48<em>Packages</em> listing in the Android 49<a href="{@docRoot}tools/help/sdk-manager.html">SDK Manager</a>.</p> 50 51<p class="caution"><strong>Important:</strong> To download the most recent Android 52system components from the Android SDK Manager, you must first update the SDK Tools to the 53most recent release and restart the SDK Manager. If you do not, the latest Android system 54packages may not be available for download.</p> 55 56 57<h2 id="5.0">Android 5.0</h2> 58 59<div class="toggle-content opened"> 60 <p><a href="#" onclick="return toggleContent(this)"> 61 <img src="{@docRoot}assets/images/triangle-opened.png" 62class="toggle-content-img" alt="" />Revision 2</a> <em>(December 2014)</em> 63 </p> 64 65 <div class="toggle-content-toggleme"> 66 67 <p>Updated layouts in the Support Library and fixed various issues.</p> 68 <p>Dependencies:</p> 69 <ul> 70 <li>Android SDK Platform-tools r21 or higher is required.</li> 71 <li>Android SDK Tools 23.0.5 or higher is required.</li> 72 </ul> 73 </div> 74 75<div class="toggle-content closed"> 76 <p><a href="#" onclick="return toggleContent(this)"> 77 <img src="{@docRoot}assets/images/triangle-closed.png" 78class="toggle-content-img" alt="" />Revision 1</a> <em>(October 2014)</em> 79 </p> 80 81 <div class="toggle-content-toggleme"> 82 83 <p>Initial release for Android 5.0 (API level 21).</p> 84 <p>Also see the 85 <a href="{@docRoot}about/versions/android-5.0.html">Android 5.0 APIs overview</a>.</p> 86 <p>Dependencies:</p> 87 <ul> 88 <li>Android SDK Platform-tools r21 or higher is required.</li> 89 <li>Android SDK Tools 23.0.5 or higher is required.</li> 90 </ul> 91 </div> 92 93 <h3>Device Definitions</h3> 94 95 <p>The platform includes the following new device definitions for use in creating 96 Android Virtual Devices in the <a href="{@docRoot}tools/help/avd-manager.html">AVD Manager</a>:</p> 97 98 <ul> 99 <li>Nexus 6 (5.96", 1440 x 2560, Normal 560dpi screen) </li> 100 <li>Nexus 9 (8.9", 2048 x 1536, X-Large xhdpi screen) </li> 101 </ul> 102 103</div> 104 105 106<h2 id="4.4">Android 4.4W</h2> 107 108<div class="toggle-content open"> 109 <p><a href="#" onclick="return toggleContent(this)"> 110 <img src="{@docRoot}assets/images/triangle-closed.png" 111class="toggle-content-img" alt="" />Revision 2</a> <em>(October 2014)</em> 112 </p> 113 114 <div class="toggle-content-toggleme"> 115 116 <p>Updated the rendering library. </p> 117 118 <p>Dependencies:</p> 119 <ul> 120 <li>Android SDK Platform-tools r20 or higher is required.</li> 121 <li>Android SDK Tools 23.0 or higher is required.</li> 122 </ul> 123 </div> 124 125<div class="toggle-content closed"> 126 <p><a href="#" onclick="return toggleContent(this)"> 127 <img src="{@docRoot}assets/images/triangle-closed.png" 128class="toggle-content-img" alt="" />Revision 1</a> <em>(June 2014)</em> 129 </p> 130 131 <div class="toggle-content-toggleme"> 132 133 <p>Initial release for Android Wear.</p> 134 <p>Dependencies:</p> 135 <ul> 136 <li>Android SDK Platform-tools r20 or higher is required.</li> 137 <li>Android SDK Tools 23.0 or higher is required.</li> 138 </ul> 139 </div> 140 141 <h3>Device Definitions</h3> 142 143 <p>The platform includes the following device definitions for use in creating Android Virtual 144 Devices in the <a href="{@docRoot}tools/help/avd-manager.html">AVD Manager</a>:</p> 145 146 <ul> 147 <li>Android Wear Round (320 x 320, hdpi)</li> 148 <li>Android Wear Square (320 x 320, hdpi)</li> 149 </ul> 150</div> 151 152<h2 id="4.4">Android 4.4</h2> 153 154<div class="toggle-content closed"> 155 <p><a href="#" onclick="return toggleContent(this)"> 156 <img src="{@docRoot}assets/images/triangle-closed.png" 157class="toggle-content-img" alt="" />Revision 2</a> <em>(December 2013)</em> 158 </p> 159 160 <div class="toggle-content-toggleme"> 161 162 <p>Maintenance release. The system version is 4.4.2.</p> 163 <p>Also see the 164 <a href="{@docRoot}about/versions/android-4.4.html">Android 4.4 APIs overview</a>.</p> 165 <dl> 166 <dt>Dependencies:</dt> 167 <dd>Android SDK Platform-tools r19 or higher is required.</dd> 168 <dd>Android SDK Tools 22.3 or higher is recommended.</dd> 169 </dl> 170 171 </div> 172</div> 173 174<div class="toggle-content closed"> 175 <p><a href="#" onclick="return toggleContent(this)"> 176 <img src="{@docRoot}assets/images/triangle-closed.png" 177class="toggle-content-img" alt="" />Revision 1</a> <em>(October 2013)</em> 178 </p> 179 180 <div class="toggle-content-toggleme"> 181 182 <p>Initial release. The system version is 4.4.</p> 183 <p>Also see the 184 <a href="{@docRoot}about/versions/android-4.4.html">Android 4.4 APIs overview</a>.</p> 185 <dl> 186 <dt>Dependencies:</dt> 187 <dd>Android SDK Platform-tools r19 or higher is required.</dd> 188 <dd>Android SDK Tools 22.3 or higher is recommended.</dd> 189 </dl> 190 191 </div> 192</div> 193 194 195 196<h3 id="gsi-4.4">Google APIs System Image</h3> 197 198<div class="toggle-content closed"> 199 <p><a href="#" onclick="return toggleContent(this)"> 200 <img src="{@docRoot}assets/images/triangle-closed.png" 201class="toggle-content-img" alt="" />Revision 4</a> <em>(March 2014)</em> 202 </p> 203 204 <div class="toggle-content-toggleme"> 205 206 <p>This release includes 207 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 4.3, 208 allowing you to test your application in an emulator using the latest Google Play services.</p> 209 210 </div> 211</div> 212 213<div class="toggle-content closed"> 214 <p><a href="#" onclick="return toggleContent(this)"> 215 <img src="{@docRoot}assets/images/triangle-closed.png" 216class="toggle-content-img" alt="" />Revision 3</a> <em>(February 2014)</em> 217 </p> 218 219 <div class="toggle-content-toggleme"> 220 221 <p>This release includes 222 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 4.2.42, 223 allowing you to test your application in an emulator using the latest Google Play services.</p> 224 225 </div> 226</div> 227 228<div class="toggle-content closed"> 229 <p><a href="#" onclick="return toggleContent(this)"> 230 <img src="{@docRoot}assets/images/triangle-closed.png" 231class="toggle-content-img" alt="" />Revision 2</a> <em>(December 2013)</em> 232 </p> 233 234 <div class="toggle-content-toggleme"> 235 236 <p>This release includes 237 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 4.0.33.</p> 238 239 </div> 240</div> 241 242<div class="toggle-content closed"> 243 <p><a href="#" onclick="return toggleContent(this)"> 244 <img src="{@docRoot}assets/images/triangle-closed.png" 245class="toggle-content-img" alt="" />Revision 1</a> <em>(October 2013)</em> 246 </p> 247 248 <div class="toggle-content-toggleme"> 249 250 <p>Initial release. This release includes 251 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 4.0.30. 252 </p> 253 254 </div> 255</div> 256 257 258 259<h2 id="4.3">Android 4.3</h2> 260 261 262<div class="toggle-content closed"> 263 264 <p><a href="#" onclick="return toggleContent(this)"> 265 <img src="{@docRoot}assets/images/triangle-closed.png" 266class="toggle-content-img" alt="" />Revision 2</a> <em>(August 2013)</em> 267 </p> 268 269 <div class="toggle-content-toggleme"> 270 271 <p>Maintenance update. The system version is 4.3.</p> 272 <dl> 273 <dt>Dependencies:</dt> 274 <dd>Android SDK Platform-tools r18 or higher is required.</dd> 275 <dd>Android SDK Tools 22.0.4 or higher is recommended.</dd> 276 </dl> 277 278 </div> 279</div> 280 281<div class="toggle-content closed"> 282 283 <p><a href="#" onclick="return toggleContent(this)"> 284 <img src="{@docRoot}assets/images/triangle-closed.png" 285class="toggle-content-img" alt="" />Revision 1</a> <em>(July 2013)</em> 286 </p> 287 288 <div class="toggle-content-toggleme"> 289 290 <p>Initial release. The system version is 4.3.</p> 291 <dl> 292 <dt>Dependencies:</dt> 293 <dd>Android SDK Platform-tools r18 or higher is required.</dd> 294 <dd>Android SDK Tools 22.0.4 or higher is recommended.</dd> 295 </dl> 296 297 </div> 298</div> 299 300<h3 id="gsi-4.3">Google APIs System Image</h3> 301 302<div class="toggle-content closed"> 303 <p><a href="#" onclick="return toggleContent(this)"> 304 <img src="{@docRoot}assets/images/triangle-closed.png" 305class="toggle-content-img" alt="" />Revision 3</a> <em>(September 2013)</em> 306 </p> 307 308 <div class="toggle-content-toggleme"> 309 310 <p>Maintenance update. This release includes 311 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 3.2.65. 312 </p> 313 314 </div> 315</div> 316 317<div class="toggle-content closed"> 318 <p><a href="#" onclick="return toggleContent(this)"> 319 <img src="{@docRoot}assets/images/triangle-closed.png" 320class="toggle-content-img" alt="" />Revision 2</a> <em>(August 2013)</em> 321 </p> 322 323 <div class="toggle-content-toggleme"> 324 325 <p>Maintenance update. This release includes 326 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 3.2.25. 327 </p> 328 329 </div> 330</div> 331 332<div class="toggle-content closed"> 333 <p><a href="#" onclick="return toggleContent(this)"> 334 <img src="{@docRoot}assets/images/triangle-closed.png" 335class="toggle-content-img" alt="" />Revision 1</a> <em>(July 2013)</em> 336 </p> 337 338 <div class="toggle-content-toggleme"> 339 340 <p>Initial release. This release includes 341 <a href="{@docRoot}google/play-services/index.html">Google Play services</a> version 3.1.58.</p> 342 343 </div> 344</div> 345 346 347 348 349<h2 id="4.2">Android 4.2</h2> 350 351 352<div class="toggle-content closed"> 353 354 <p><a href="#" onclick="return toggleContent(this)"> 355 <img src="{@docRoot}assets/images/triangle-closed.png" 356class="toggle-content-img" alt="" />Revision 2</a> <em>(February 2013)</em> 357 </p> 358 359 <div class="toggle-content-toggleme"> 360 361 <p>Maintenance update. The system version is 4.2.2.</p> 362 <dl> 363 <dt>Dependencies:</dt> 364 <dd>SDK Tools r21 or higher is required.</dd> 365 </dl> 366 367 </div> 368</div> 369 370<div class="toggle-content closed"> 371 372 <p><a href="#" onclick="return toggleContent(this)"> 373 <img src="{@docRoot}assets/images/triangle-closed.png" 374class="toggle-content-img" alt="" />Revision 1</a> <em>(November 2012)</em> 375 </p> 376 377 <div class="toggle-content-toggleme"> 378 379 <p>Initial release. The system version is 4.2.</p> 380 <dl> 381 <dt>Dependencies:</dt> 382 <dd>SDK Tools r20 or higher is required.</dd> 383 </dl> 384 385 </div> 386</div> 387 388<h3>Device Definitions</h3> 389 390<p>The platform includes the following device definitions for use in creating Android Virtual 391Devices in the <a href="{@docRoot}tools/help/avd-manager.html">AVD Manager</a>:</p> 392 393<ul> 394 <li> 395 Nexus 7 (7.3", 800 x 1280, Large tvdpi screen) 396 </li> 397 <li> 398 Galaxy Nexus (4.7", 720 x 1280, Normal xhdpi screen) 399 </li> 400 <li> 401 Nexus S (4.0", 480 x 800, Normal hdpi screen) 402 </li> 403 <li> 404 Nexus One (3.7", 480 x 720, Normal hdpi screen) 405 </li> 406 <li> 407 10.1" WXGA Tablet (1280 x 800, X-Large mdpi screen) 408 </li> 409 <li> 410 7.0" WSVGA Tablet (1024 x 600, Large mdpi screen) 411 </li> 412 <li> 413 5.4" FWVGA (480 x 854, Large mdpi screen) 414 </li> 415 <li> 416 5.1" WVGA (480 x 800, Large mdpi screen) 417 </li> 418 <li> 419 4.7" WXGA (1280 x 720, Normal xhdpi screen) 420 </li> 421 <li> 422 4.65" 720p (720 x 1280, Normal xhdpi screen) 423 </li> 424 <li> 425 4.0" WVGA (480 x 800, Normal hdpi screen) 426 </li> 427 <li> 428 3.7" WVGA (480 x 800, Normal hdpi screen) 429 </li> 430 <li> 431 3.7" FWVGA slider (480 x 854, Normal hdpi screen) 432 </li> 433 <li> 434 3.4" WQVGA (240 x 432, Normal ldpi screen) 435 </li> 436 <li> 437 3.3" WQVGA (240 x 400, Normal ldpi screen) 438 </li> 439 <li> 440 3.2" QVGA ADP2 (320 x 480, Normal mdpi screen) 441 </li> 442 <li> 443 3.2" HVGA slider ADP1 (320 x 480, Normal mdpi screen) 444 </li> 445 <li> 446 2.7" QVGA slider (240 x 320, Small ldpi screen) 447 </li> 448 <li> 449 2.7" QVGA (240 x 320, Small ldpi screen) 450 </li> 451</ul> 452 453 454 455<h2 id="4.1">Android 4.1</h2> 456 457 458<div class="toggle-content closed"> 459 460 <p><a href="#" onclick="return toggleContent(this)"> 461 <img src="{@docRoot}assets/images/triangle-closed.png" 462class="toggle-content-img" alt="" />Revision 3</a> <em>(October 2012)</em> 463 </p> 464 465 <div class="toggle-content-toggleme"> 466 467 <p>Maintenance update. The system version is 4.1.2.</p> 468 <dl> 469 <dt>Dependencies:</dt> 470 <dd>SDK Tools r20 or higher is required.</dd> 471 </dl> 472 473 </div> 474</div> 475 476<div class="toggle-content closed"> 477 478 <p><a href="#" onclick="return toggleContent(this)"> 479 <img src="{@docRoot}assets/images/triangle-closed.png" 480class="toggle-content-img" alt="" />Revision 2</a> <em>(July 2012)</em> 481 </p> 482 483 <div class="toggle-content-toggleme"> 484 485 <p>Maintenance update. The system version is 4.1.1.</p> 486 <dl> 487 <dt>Dependencies:</dt> 488 <dd>SDK Tools r20 or higher is required.</dd> 489 </dl> 490 491 </div> 492</div> 493 494<div class="toggle-content closed" > 495 496 <p><a href="#" onclick="return toggleContent(this)"> 497 <img src="{@docRoot}assets/images/triangle-closed.png" 498class="toggle-content-img" alt="" />Revision 1</a> <em>(June 2012)</em> 499 </p> 500 501 <div class="toggle-content-toggleme"> 502 503 <p>Initial release. The system version is 4.1.0.</p> 504 <dl> 505 <dt>Dependencies:</dt> 506 <dd>SDK Tools r20 or higher is required.</dd> 507 </dl> 508 509 </div> 510</div> 511 512<h3>Emulator Skins</h3> 513 514<p>The downloadable platform includes the following emulator skins:</p> 515 516<ul> 517 <li> 518 QVGA (240x320, low density, small screen) 519 </li> 520 <li> 521 WQVGA400 (240x400, low density, normal screen) 522 </li> 523 <li> 524 WQVGA432 (240x432, low density, normal screen) 525 </li> 526 <li> 527 HVGA (320x480, medium density, normal screen) 528 </li> 529 <li> 530 WVGA800 (480x800, high density, normal screen) 531 </li> 532 <li> 533 WVGA854 (480x854 high density, normal screen) 534 </li> 535 <li> 536 WXGA720 (1280x720, extra-high density, normal screen) 537 </li> 538 <li> 539 WSVGA (1024x600, medium density, large screen) 540 </li> 541 <li> 542 WXGA800-7in (1280x800, high density, large screen) <span class="new">new</span> 543 </li> 544 <li> 545 WXGA800 (1280x800, medium density, xlarge screen) 546 </li> 547</ul> 548 549<p>To test your application on an emulator that represents the <a 550href="http://play.google.com/nexus7">Nexus 7</a> tablet device, you can create an AVD with 551the new WXGA800-7in skin. For best performance, make sure to enable <a 552href="{@docRoot}tools/devices/emulator.html#accel-graphics">graphics acceleration</a> in the 553emulator configuration.</p> 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568<h2 id="4.0.3">Android 4.0.3</h2> 569 570 571<div class="toggle-content closed"> 572 573 <p><a href="#" onclick="return toggleContent(this)"> 574 <img src="{@docRoot}assets/images/triangle-closed.png" 575class="toggle-content-img" alt="" />Revision 3</a> <em>(March 2012)</em> 576 </p> 577 578 <div class="toggle-content-toggleme"> 579 580 <p>Maintenance update. The system version is 4.0.4.</p> 581 <p class="note"><strong>Note:</strong> This system image includes support for emulator 582hardware graphics acceleration when used with SDK Tools r17 or higher. 583(<a href="{@docRoot}tools/devices/emulator.html#accel-graphics">more info</a>)</p> 584 <dl> 585 <dt>Dependencies:</dt> 586 <dd>SDK Tools r17 or higher is required.</dd> 587 </dl> 588 589 </div> 590</div> 591 592<div class="toggle-content closed" > 593 594 <p><a href="#" onclick="return toggleContent(this)"> 595 <img src="{@docRoot}assets/images/triangle-closed.png" 596class="toggle-content-img" alt="" />Revision 2</a> <em>(January 2012)</em> 597 </p> 598 599 <div class="toggle-content-toggleme"> 600 601 <p>Maintenance update. The system version is 4.0.3.</p> 602 <dl> 603 <dt>Dependencies:</dt> 604 <dd>SDK Tools r14 or higher is required.</dd> 605 </dl> 606 607 </div> 608</div> 609 610<div class="toggle-content closed" > 611 612 <p><a href="#" onclick="return toggleContent(this)"> 613 <img src="{@docRoot}assets/images/triangle-closed.png" 614class="toggle-content-img" alt="" />Revision 1</a> <em>(December 2011)</em> 615 </p> 616 617 <div class="toggle-content-toggleme"> 618 619 <p>Initial release. The system version is 4.0.3.</p> 620 <dl> 621 <dt>Dependencies:</dt> 622 <dd>SDK Tools r14 or higher is required.</dd> 623 </dl> 624 625 </div> 626</div> 627 628<h3>Emulator Skins</h3> 629 630<p>The downloadable platform includes the following emulator skins:</p> 631 632<ul> 633 <li> 634 QVGA (240x320, low density, small screen) 635 </li> 636 <li> 637 WQVGA400 (240x400, low density, normal screen) 638 </li> 639 <li> 640 WQVGA432 (240x432, low density, normal screen) 641 </li> 642 <li> 643 HVGA (320x480, medium density, normal screen) 644 </li> 645 <li> 646 WVGA800 (480x800, high density, normal screen) 647 </li> 648 <li> 649 WVGA854 (480x854 high density, normal screen) 650 </li> 651 <li> 652 WXGA720 (1280x720, extra-high density, normal screen) 653 </li> 654 <li> 655 WSVGA (1024x600, medium density, large screen) 656 </li> 657 <li> 658 WXGA (1280x800, medium density, xlarge screen) 659 </li> 660</ul> 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677<h2 id="4.0">Android 4.0</h2> 678 679 680<div class="toggle-content closed"> 681 682 <p><a href="#" onclick="return toggleContent(this)"> 683 <img src="{@docRoot}assets/images/triangle-closed.png" 684class="toggle-content-img" alt="" />Android 4.0, Revision 2</a> <em>(December 2011)</em> 685 </p> 686 687 <div class="toggle-content-toggleme"> 688 <p>Maintenance update. The system version is 4.0.2.</p> 689 <dl> 690 <dt>Dependencies:</dt> 691 <dd>SDK Tools r14 or higher is required.</dd> 692 </dl> 693 </div> 694</div> 695 696<div class="toggle-content closed"> 697 698 <p><a href="#" onclick="return toggleContent(this)"> 699 <img src="{@docRoot}assets/images/triangle-closed.png" 700class="toggle-content-img" alt="" />Android 4.0, Revision 1</a> <em>(October 2011)</em> 701 </p> 702 703 <div class="toggle-content-toggleme"> 704 <p>Initial release. The system version is 4.0.1.</p> 705 <dl> 706 <dt>Dependencies:</dt> 707 <dd>SDK Tools r14 or higher is required.</dd> 708 </dl> 709 </div> 710</div> 711 712 713<h3>Emulator Skins</h3> 714 715<p>The downloadable platform includes the following emulator skins:</p> 716 717<ul> 718 <li> 719 QVGA (240x320, low density, small screen) 720 </li> 721 <li> 722 WQVGA400 (240x400, low density, normal screen) 723 </li> 724 <li> 725 WQVGA432 (240x432, low density, normal screen) 726 </li> 727 <li> 728 HVGA (320x480, medium density, normal screen) 729 </li> 730 <li> 731 WVGA800 (480x800, high density, normal screen) 732 </li> 733 <li> 734 WVGA854 (480x854 high density, normal screen) 735 </li> 736 <li> 737 WXGA720 (1280x720, extra-high density, normal screen) <span class="new">new</span> 738 </li> 739 <li> 740 WSVGA (1024x600, medium density, large screen) <span class="new">new</span> 741 </li> 742 <li> 743 WXGA (1280x800, medium density, xlarge screen) 744 </li> 745</ul> 746 747<p>To test your application on an emulator that represents the latest Android device, you can create 748an AVD with the new WXGA720 skin (it's an xhdpi, normal screen device). Note that the emulator 749currently doesn't support the new on-screen navigation bar for devices without hardware navigation 750buttons, so when using this skin, you must use keyboard keys <em>Home</em> for the Home button, 751<em>ESC</em> for the Back button, and <em>F2</em> or <em>Page-up</em> for the Menu button.</p> 752 753<p>However, due to performance issues in the emulator when running high-resolution screens such as 754the one for the WXGA720 skin, we recommend that you primarily use the traditional WVGA800 skin 755(hdpi, normal screen) to test your application.</p> 756 757 758 759 760 761 762 763 764 765 766 767 768 769<h2 id="3.2">Android 3.2</h2> 770 771 772 773<div class="toggle-content closed"> 774 775 <p><a href="#" onclick="return toggleContent(this)"> 776 <img src="{@docRoot}assets/images/triangle-closed.png" 777class="toggle-content-img" alt="" />Android 3.2, Revision 1</a> <em>(July 2011)</em> 778 </p> 779 780 <div class="toggle-content-toggleme"> 781 782<dl> 783<dt>Initial release. SDK Tools r12 or higher is recommended.</dt> 784</dl> 785 786 </div> 787</div> 788 789 790 791 792<h3>Emulator Skins</h3> 793 794<p>The downloadable platform includes the following emulator skin:</p> 795 796<ul> 797 <li> 798 WXGA (1280x800, medium density, xlarge screen) 799 </li> 800</ul> 801 802<p>For more information about how to develop an application that displays 803and functions properly on all Android-powered devices, see <a 804href="{@docRoot}guide/practices/screens_support.html">Supporting Multiple 805Screens</a>.</p> 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824<h2 id="3.1">Android 3.1</h2> 825 826 827<div class="toggle-content closed"> 828 829<p><a href="#" onclick="return toggleContent(this)"> 830 <img src="{@docRoot}assets/images/triangle-closed.png" 831class="toggle-content-img" alt="" />Android 3.1, Revision 3</a> <em>(July 2011)</em> 832</p> 833 834<div class="toggle-content-toggleme"> 835 836<dl> 837<dt>Dependencies:</dt> 838<dd> 839<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r12</a> or 840higher.</p> 841</dd> 842<dt>Notes:</dt> 843<dd> 844<p>Improvements to the platform's rendering library to support the visual layout editor in the ADT 845Eclipse plugin. This revision allows for more drawing features in ADT and fixes several 846bugs in the previous rendering library. It also unlocks several editor features that were added in 847ADT 12.</p> 848</dd> 849</dl> 850 851</div> 852</div> 853 854 855<div class="toggle-content closed" > 856 857<p><a href="#" onclick="return toggleContent(this)"> 858 <img src="{@docRoot}assets/images/triangle-closed.png" 859class="toggle-content-img" alt="" />Android 3.1, Revision 2</a> <em>(May 2011)</em> 860</p> 861 862<div class="toggle-content-toggleme"> 863 864<dl> 865<dt>Dependencies:</dt> 866<dd> 867<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r11</a> or 868higher.</p> 869</dd> 870<dt>Notes:</dt> 871<dd> 872<p>Fixes an issue with the visual layout editor rendering library that prevented Android 3.1 from 873running in ADT.</p> 874</dd> 875</dl> 876 877</div> 878</div> 879 880 881<div class="toggle-content closed"> 882 883<p><a href="#" onclick="return toggleContent(this)"> 884 <img src="{@docRoot}assets/images/triangle-closed.png" 885class="toggle-content-img" alt="" />Android 3.1, Revision 1</a> <em>(May 2011)</em> 886</p> 887 888<div class="toggle-content-toggleme"> 889 890<dl> 891<dt>Dependencies:</dt> 892<dd> 893<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r11</a> or 894higher.</p> 895</dd> 896</dl> 897 898</div> 899</div> 900 901 902<h3>Emulator Skins</h3> 903 904<p>The downloadable platform includes the following emulator skin:</p> 905 906<ul> 907 <li> 908 WXGA (1280x800, medium density, xlarge screen) 909 </li> 910</ul> 911 912<p>For more information about how to develop an application that displays 913and functions properly on all Android-powered devices, see <a 914href="{@docRoot}guide/practices/screens_support.html">Supporting Multiple 915Screens</a>.</p> 916 917 918 919 920 921 922 923 924 925 926 927<h2 id="3.0">Android 3.0</h2> 928 929 930<div class="toggle-content closed" > 931 932<p><a href="#" onclick="return toggleContent(this)"> 933 <img src="{@docRoot}assets/images/triangle-closed.png" 934class="toggle-content-img" alt="" />Android 3.0, Revision 2</a> <em>(July 2011)</em> 935</p> 936 937<div class="toggle-content-toggleme"> 938 939<dl> 940<dt>Dependencies:</dt> 941<dd> 942<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r12</a> or 943higher.</p> 944</dd> 945<dt>Notes:</dt> 946<dd> 947<p>Improvements to the platform's rendering library to support the visual layout editor in the ADT 948Eclipse plugin. This revision allows for more drawing features in ADT and fixes several 949bugs in the previous rendering library. It also unlocks several editor features that were added in 950ADT 12.</p> 951</dd> 952</dl> 953 954</div> 955</div> 956 957<div class="toggle-content closed"> 958 959<p><a href="#" onclick="return toggleContent(this)"> 960 <img src="{@docRoot}assets/images/triangle-closed.png" class="toggle-content-img" 961 alt="" />Android 3.0, Revision 1</a> <em>(February 2011)</em> 962</p> 963 964<div class="toggle-content-toggleme"> 965 966<dl> 967<dt>Dependencies:</dt> 968<dd> 969<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r10</a> or higher.</p> 970</dd> 971</dl> 972 973</div> 974</div> 975 976 977 978<h3>Emulator Skins</h3> 979 980<p>The downloadable platform includes the following emulator skin:</p> 981 982<ul> 983 <li> 984 WXGA (1280x800, medium density, xlarge screen) 985 </li> 986</ul> 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005<h2 id="2.3.4">Android 2.3.4</h2> 1006 1007 1008<div class="toggle-content closed" > 1009 1010<p><a href="#" onclick="return toggleContent(this)"> 1011 <img src="{@docRoot}assets/images/triangle-closed.png" class="toggle-content-img" 1012 alt="" />Android 2.3.4, Revision 1</a> <em>(May 2011)</em> 1013</p> 1014 1015 <div class="toggle-content-toggleme"> 1016 <dl> 1017 <dt>Dependencies:</dt> 1018 <dd> 1019 <p>Requires SDK Tools r11 or higher.</p> 1020 </dd> 1021 </dl> 1022 </div> 1023</div> 1024 1025 1026<h3>Emulator Skins</h3> 1027 1028<p>The downloadable platform includes a set of emulator skins that you can use 1029for modeling your application in different screen sizes and resolutions. The 1030emulator skins are:</p> 1031 1032<ul> 1033 <li> 1034 QVGA (240x320, low density, small screen) 1035 </li> 1036 <li> 1037 WQVGA400 (240x400, low density, normal screen) 1038 </li> 1039 <li> 1040 WQVGA432 (240x432, low density, normal screen) 1041 </li> 1042 <li> 1043 HVGA (320x480, medium density, normal screen) 1044 </li> 1045 <li> 1046 WVGA800 (480x800, high density, normal screen) 1047 </li> 1048 <li> 1049 WVGA854 (480x854 high density, normal screen) 1050 </li> 1051</ul> 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065<h2 id="2.3.3">Android 2.3.3</h2> 1066 1067 1068<div class="toggle-content closed" > 1069 1070<p><a href="#" onclick="return toggleContent(this)"> 1071 <img src="{@docRoot}assets/images/triangle-closed.png" 1072class="toggle-content-img" alt="" />Android 2.3.3, Revision 2</a> <em>(July 2011)</em> 1073</p> 1074 1075<div class="toggle-content-toggleme"> 1076 1077<dl> 1078<dt>Dependencies:</dt> 1079<dd> 1080<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r12</a> or 1081higher.</p> 1082</dd> 1083<dt>Notes:</dt> 1084<dd> 1085<p>Improvements to the platform's rendering library to support the visual layout editor in the ADT 1086Eclipse plugin. This revision allows for more drawing features in ADT and fixes several 1087bugs in the previous rendering library. It also unlocks several editor features that were added in 1088ADT 12.</p> 1089</dd> 1090</dl> 1091 1092</div> 1093</div> 1094 1095<div class="toggle-content closed" > 1096 1097<p><a href="#" onclick="return toggleContent(this)"> 1098 <img src="{@docRoot}assets/images/triangle-closed.png" 1099class="toggle-content-img" alt="" />Android 2.3.3, Revision 1</a> <em>(February 2011)</em> 1100</p> 1101 1102<div class="toggle-content-toggleme"> 1103<dl> 1104<dt>Dependencies:</dt> 1105<dd> 1106<p>Requires SDK Tools r9 or higher.</p> 1107</dd> 1108</dl> 1109 1110</div> 1111</div> 1112 1113 1114<h3>Emulator Skins</h3> 1115 1116<p>The downloadable platform includes a set of emulator skins that you can use 1117for modeling your application in different screen sizes and resolutions. The 1118emulator skins are:</p> 1119 1120<ul> 1121 <li> 1122 QVGA (240x320, low density, small screen) 1123 </li> 1124 <li> 1125 WQVGA400 (240x400, low density, normal screen) 1126 </li> 1127 <li> 1128 WQVGA432 (240x432, low density, normal screen) 1129 </li> 1130 <li> 1131 HVGA (320x480, medium density, normal screen) 1132 </li> 1133 <li> 1134 WVGA800 (480x800, high density, normal screen) 1135 </li> 1136 <li> 1137 WVGA854 (480x854 high density, normal screen) 1138 </li> 1139</ul> 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152<h2 id="2.3">Android 2.3</h2> 1153 1154 1155<div class="toggle-content closed" > 1156 1157<p><a href="#" onclick="return toggleContent(this)"> 1158 <img src="{@docRoot}assets/images/triangle-closed.png" class="toggle-content-img" 1159 alt="" />Android 2.3, Revision 1</a> <em>(December 2010)</em> 1160</p> 1161 1162 <div class="toggle-content-toggleme"> 1163 <dl> 1164 <dt>Dependencies:</dt> 1165 <dd> 1166 <p>Requires SDK Tools r8 or higher.</p> 1167 </dd> 1168 </dl> 1169 </div> 1170</div> 1171 1172 1173<h3>Emulator Skins</h3> 1174 1175<p>The downloadable platform includes a set of emulator skins that you can use 1176for modeling your application in different screen sizes and resolutions. The 1177emulator skins are:</p> 1178 1179<ul> 1180 <li> 1181 QVGA (240x320, low density, small screen) 1182 </li> 1183 <li> 1184 WQVGA400 (240x400, low density, normal screen) 1185 </li> 1186 <li> 1187 WQVGA432 (240x432, low density, normal screen) 1188 </li> 1189 <li> 1190 HVGA (320x480, medium density, normal screen) 1191 </li> 1192 <li> 1193 WVGA800 (480x800, high density, normal screen) 1194 </li> 1195 <li> 1196 WVGA854 (480x854 high density, normal screen) 1197 </li> 1198</ul> 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208<h2 id="2.2">Android 2.2</h2> 1209 1210 1211<div class="toggle-content closed" > 1212 1213<p><a href="#" onclick="return toggleContent(this)"> 1214 <img src="{@docRoot}assets/images/triangle-closed.png" 1215class="toggle-content-img" alt="" />Android {@sdkPlatformVersion}, Revision 3</a> <em>(July 2011)</em> 1216</p> 1217 1218<div class="toggle-content-toggleme"> 1219 1220<dl> 1221<dt>Dependencies:</dt> 1222<dd> 1223<p>Requires <a href="{@docRoot}tools/sdk/tools-notes.html">SDK Tools r12</a> or 1224higher.</p> 1225</dd> 1226<dt>Notes:</dt> 1227<dd> 1228<p>Improvements to the platform's rendering library to support the visual layout editor in the ADT 1229Eclipse plugin. This revision allows for more drawing features in ADT and fixes several 1230bugs in the previous rendering library. It also unlocks several editor features that were added in 1231ADT 12.</p> 1232</dd> 1233</dl> 1234 1235</div> 1236</div> 1237 1238<div class="toggle-content closed" > 1239 1240<p><a href="#" onclick="return toggleContent(this)"> 1241 <img src="{@docRoot}assets/images/triangle-closed.png" 1242class="toggle-content-img" alt="" />Android {@sdkPlatformVersion}, Revision 2</a> <em>(July 2010)</em> 1243</p> 1244 1245<div class="toggle-content-toggleme"> 1246<dt>Dependencies:</dt> 1247<dd> 1248<p>Requires SDK Tools r6 or higher.</p> 1249</dd> 1250 1251<dt>System Image:</dt> 1252<dd> 1253<ul> 1254<li>Adds default Search Widget.</li> 1255<li>Includes proper provisioning for the platform's Backup Manager. For more information about how 1256to use the Backup Manager, see <a href="{@docRoot}guide/topics/data/backup.html">Data 1257Backup</a>.</li> 1258<li>Updates the Android 2.2 system image to FRF91.</li> 1259</ul> 1260</dd> 1261 1262</dl> 1263 </div> 1264</div> 1265 1266<div class="toggle-content closed"> 1267 1268<p><a href="#" onclick="return toggleContent(this)"> 1269 <img src="{@docRoot}assets/images/triangle-closed.png" 1270class="toggle-content-img" alt="" />Android {@sdkPlatformVersion}, Revision 1</a> <em>(May 2010)</em></p> 1271 1272<div class="toggle-content-toggleme"> 1273<dl> 1274<dt>Dependencies:</dt> 1275<dd> 1276<p>Requires SDK Tools r6 or higher.</p> 1277</dd> 1278 1279<dt>Tools:</dt> 1280<dd> 1281<p>Adds support for building with Android library projects. See <a href="{@docRoot}tools/sdk/tools-notes.html">SDK 1282Tools, r6</a> for information.</p> 1283</dd> 1284 1285</dl> 1286 </div> 1287</div> 1288 1289 1290<h3>Emulator Skins</h3> 1291 1292<p>The downloadable platform includes a set of emulator skins that you can use 1293for modeling your application in different screen sizes and resolutions. The 1294emulator skins are:</p> 1295 1296<ul> 1297 <li> 1298 QVGA (240x320, low density, small screen) 1299 </li> 1300 <li> 1301 WQVGA (240x400, low density, normal screen) 1302 </li> 1303 <li> 1304 FWQVGA (240x432, low density, normal screen) 1305 </li> 1306 <li> 1307 HVGA (320x480, medium density, normal screen) 1308 </li> 1309 <li> 1310 WVGA800 (480x800, high density, normal screen) 1311 </li> 1312 <li> 1313 WVGA854 (480x854 high density, normal screen) 1314 </li> 1315</ul> 1316
