1page.title=Ice Cream Sandwich 2 3@jd:body 4 5 6<style type="text/css"> 7#jd-content { 8 max-width:1024px; 9} 10#jd-content div.screenshot { 11 float:left; 12 clear:left; 13 padding:15px 30px 15px 0; 14} 15#jd-content div.video { 16 float:right; 17 padding:0 0 40px 60px; 18} 19#jd-content table.columns { 20 margin:0 0 1em 0; 21} 22#jd-content table.columns td { 23 padding:0; 24} 25#jd-content table.columns td+td { 26 padding:0 2em; 27} 28#jd-content table.columns td img { 29 margin:0; 30} 31#jd-content table.columns td+td>*:first-child { 32 margin-top:-2em; 33} 34.green { 35 color:#8db529; 36 font-weight:bold; 37} 38</style> 39 40<p>Welcome to Android 4.0!</p> 41 42<p>Android 4.0 delivers a refined, unified UI for phones and tablets and 43introduces innovative features for users and developers. This document provides 44a glimpse of the many new features and technologies that make Android 4.0 45simple, beautiful, and beyond smart. <!--For technical details about 46new developer APIs described below, see the <a 47href="{@docRoot}about/versions/android-4.0.html">Android 4.0 API Overview</a> 48document.--></p> 49 50<ul> 51 <li><a href="#UserFeatures">Android 4.0 for Users</a></li> 52 <li><a href="#DeveloperApis">Android 4.0 for Developers</a></li> 53</ul> 54 55<h2 id="UserFeatures" style="clear:right">Android 4.0 for Users</h2> 56 57<div style="padding-bottom:0em;"> 58<a href="{@docRoot}sdk/images/4.0/home-lg.png" target="_android"><img 59style="margin-left:10px;float:right;xborder:1px solid #ddd;border-radius: 5px;" 60src="{@docRoot}sdk/images/4.0/home.png" alt="" height="300" width="180" /></a> 61<a href="{@docRoot}sdk/images/4.0/lock-lg.png" target="_android"><img 62style="margin-left:20px;float:right;border:1px solid #ddd;border-radius: 5px;" 63src="{@docRoot}sdk/images/4.0/lock.png" alt="" height="300" width="180" /></a> 64</div> 65 66 67<h3 id="simple" style="color:#258AAF">Simple, beautiful, beyond smart</h3> 68 69<p>Android 4.0 builds on the things people love most about Android — easy 70multitasking, rich notifications, customizable home screens, resizable widgets, 71and deep interactivity — and adds powerful new ways of communicating and 72sharing.</p> 73 74<p style="margin-top:1em;margin-bottom:.75em;"><strong>Refined, evolved UI</strong></p> 75 76<p>Focused on bringing the power of Android to the surface, Android 4.0 makes 77<strong>common actions more visible</strong> and lets users navigate with 78simple, intuitive gestures. Refined <strong>animations</strong> and feedback 79throughout the system make interactions engaging and interesting. An entirely 80<strong>new typeface</strong> optimized for high-resolution screens improves 81readability and brings a polished, modern feel to the user interface.</p> 82 83<p>Virtual buttons in the System Bar let users navigate instantly to Back, Home, 84and Recent Apps. The <strong>System Bar</strong> and virtual buttons are present 85across all apps, but can be dimmed by applications for full-screen viewing. 86Users can access each application's contextual options in the <strong>Action 87Bar</strong>, displayed at the top (and sometimes also at the bottom) of the 88screen.</p> 89 90<p><strong>Multitasking</strong> is a key strength of Android and it's made even 91easier and more visual on Android 4.0. The Recent Apps button lets users jump 92instantly from one task to another using the list in the System Bar. The list 93pops up to show thumbnail images of apps used recently — tapping a 94thumbnail switches to the app.</p> 95 96<div style="padding-top:0em;"> 97<div style="margin-right:.5em;float:left;width:182px;padding-top:.5em;"> 98<a href="{@docRoot}sdk/images/4.0/tasks-lg.png" target="_android"> 99<img src="{@docRoot}sdk/images/4.0/tasks.png" alt="" height="240" width="144" style="border:1px 100solid #ddd;border-radius: 6px;" /></a> 101<div style="padding-bottom:1em;font-size:.9em;padding-right:1em;">The Recent Apps list makes 102multitasking simple.</div> 103<a href="{@docRoot}sdk/images/4.0/lock-camera-lg.png" target="_android"> 104<img src="{@docRoot}sdk/images/4.0/lock-camera.png" alt="" height="240" width="144" 105style="border:1px solid #ddd;border-radius: 6px;" /></a> 106<div style="padding-bottom:1em;font-size:.9em;padding-right:1.75em;">Jump to the camera or see 107notifications without unlocking.</div> 108<a href="{@docRoot}sdk/images/4.0/contact-call-lg.png" target="_android"> 109<img src="{@docRoot}sdk/images/4.0/contact-call.png" alt="" height="240" width="144" 110style="border:1px solid #ddd;border-radius: 6px;padding:0" /></a> 111<!--<a href="{@docRoot}sdk/images/4.0/quick-response-lg.png" target="_android"> 112<img src="{@docRoot}sdk/images/4.0/quick-responses-new.png" alt="" height="240" width="144" 113style="border:1px solid #ddd;border-radius: 6px;" /></a>--> 114<div style="padding-bottom:.5em;font-size:.9em;padding-right:1.75em;">For incoming calls, you can 115respond instantly by text.</div> 116</div> 117</div> 118 119<p>Rich and interactive <strong>notifications</strong> let users keep in 120constant touch with incoming messages, play music tracks, see real-time updates 121from apps, and much more. On smaller-screen devices, notifications appear at the 122top of the screen, while on larger-screen devices they appear in the System 123Bar.</p> 124 125<div style="padding-top:0em;"> 126<div 127style="float:right;margin-left:20px;margin-top:.5em;margin-bottom:0;padding-bottom: 1280 ; width:326px"> 129<a href="{@docRoot}sdk/images/4.0/allapps-lg.png" target="_android"> 130<img src="{@docRoot}sdk/images/4.0/allapps.png" alt="" height="240" width="144" style="border:1px 131solid #ddd;border-radius: 6px;" /></a> 132<a href="{@docRoot}sdk/images/4.0/calendar-widget-lg.png" target="_android"> 133<img src="{@docRoot}sdk/images/4.0/calendar-widget.png" alt="" height="240" width="144" 134style="border:1px solid #ddd;border-radius: 6px;" /></a> 135<div style="padding-bottom:1em;margin-top:0;padding-top:0;font-size:.9em"><!--<strong>Figure 1363.</strong>-->The All Apps launcher (left) and resizable widgets (right) give you apps and rich 137content from the home screen.</div> 138</div> 139</div> 140 141 142<p style="margin-top:1em;margin-bottom:.75em;"><strong>Home screen folders and 143favorites tray</strong></p> 144 145<p>New home screen <strong>folders</strong> offer a new way for users to group 146their apps and shortcuts logically, just by dragging one onto another. Also, 147in All Apps launcher, users can now simply <strong>drag an app</strong> to get 148information about it or immediately uninstall it, or disable a pre-installed app.</p> 149 150<p>On smaller-screen devices, the home screen now includes a customizable 151<strong>favorites tray</strong> visible from all home screens. Users can drag 152apps, shortcuts, folders, and other priority items in or out of the favorites 153tray for instant access from any home screen.</p> 154 155 156<p style="margin-top:1em;margin-bottom:.75em;"><strong>Resizable 157widgets</strong></p> 158 159<p>Home screens in Android 4.0 are designed to be content-rich and customizable. 160Users can do much more than add shortcuts — they can embed live 161application content directly through interactive <strong>widgets</strong>. 162Widgets let users check email, flip through a calendar, play music, check social 163streams, and more — right from the home screen, without having to launch 164apps. Widgets are resizable, so users can expand them to show more content or 165shrink them to save space.</p> 166 167 168<p style="margin-top:1em;margin-bottom:.75em;"><strong>New lock screen 169actions</strong></p> 170 171<p>The lock screens now let users do more without unlocking. From the slide lock 172screen, users can <strong>jump directly to the camera</strong> for a picture or 173<strong>pull down the notifications window</strong> to check for messages. When 174listening to music, users can even manage music tracks and see album art. </p> 175 176 177<p style="margin-top:1em;margin-bottom:.75em;"><strong>Quick responses for 178incoming calls</strong></p> 179 180<p>When an incoming call arrives, users can now quickly <strong>respond by text 181message</strong>, without needing to pick up the call or unlock the device. On 182the incoming call screen, users simply slide a control to see a list of text 183responses and then tap to send and end the call. Users can add their own 184responses and manage the list from the Settings app.</p> 185 186 187<p style="margin-top:1em;margin-bottom:.75em;"><strong>Swipe to dismiss 188notifications, tasks, and browser tabs</strong></p> 189 190<p>Android 4.0 makes managing notifications, recent apps, and browser tabs even 191easier. Users can now dismiss individual notifications, apps from the Recent 192Apps list, and browser tabs with a simple swipe of a finger. </p> 193 194<div style="padding-top:0em;"> 195<div 196style="float:right;margin-left:20px;margin-top:1.5em;margin-bottom:0;padding-bottom 197: 0 ; width:200px"> 198<a href="{@docRoot}sdk/images/4.0/text-replace-lg.png" target="_android"> 199<img src="{@docRoot}sdk/images/4.0/text-replace.png" alt="" width="190" style="border:1px solid 200#ddd;border-radius: 6px;" /></a> 201<div style="padding-bottom:1.25em;margin-top:0;padding-top:0;font-size:.9em"><!--<strong>Figure 2023.</strong>-->A spell-checker lets you find errors and fix them faster. </div> 203<a href="{@docRoot}sdk/images/4.0/tts-lg.png" target="_android"> 204<img src="{@docRoot}sdk/images/4.0/tts.png" alt="" width="190" style="border:1px solid 205#ddd;border-radius: 6px;" /></a> 206<div style="padding-bottom:1.25em;margin-top:0;padding-top:0;font-size:.9em">A powerful voice input 207engine lets you dictate continously.</div> 208</div> 209</div> 210 211<p style="margin-top:1em;margin-bottom:.75em;"><strong>Improved text input and 212spell-checking</strong></p> 213 214<p>The soft keyboard in Android 4.0 makes text input even faster and more 215accurate. Error correction and word suggestion are improved through a new set of 216default dictionaries and more accurate heuristics for handling cases such as 217double-typed characters, skipped letters, and omitted spaces. Word suggestion 218is also improved and the suggestion strip is simplified to show only three 219words at a time.</p> 220 221<p>To fix misspelled words more easily, Android 4.0 adds a 222<strong>spell-checker</strong> that locates and underlines errors and suggests 223replacement words. With one tap, users can choose from multiple spelling 224suggestions, delete a word, or add it to the dictionary. Users can even tap to 225see replacement suggestions for words that are spelled correctly. For 226specialized features or additional languages, users can now download and install 227third-party dictionaries, spell-checkers, and other text services.</p> 228 229 230<p style="margin-top:1em;margin-bottom:.75em;"><strong>Powerful voice input 231engine</strong></p> 232 233<p>Android 4.0 introduces a powerful new voice input engine that offers a 234continuous "open microphone" experience and streaming voice recognition. The new 235voice input engine lets users dictate the text they want, for as long as they 236want, using the language they want. Users can <strong>speak continously</strong> for a prolonged 237time, even pausing for intervals if needed, and dictate punctuation to create 238correct sentences. As the voice input engine enters text, it underlines possible 239dictation errors in gray. After dictating, users can tap the underlined words to 240quickly replace them from a list of suggestions.</p> 241 242<div style="padding-top:0em;"> 243<div style="margsin-right:.8em;float:left;width:350px;padding-top:1em;"> 244<a href="{@docRoot}sdk/images/4.0/usage-all-lg.png" target="_android"> 245<img src="{@docRoot}sdk/images/4.0/usage-all.png" alt="" height="240" width="144" style="border:1px 246solid #ddd;border-radius: 6px;" /></a> 247<a href="{@docRoot}sdk/images/4.0/usage-maps-lg.png" target="_android"> 248<img src="{@docRoot}sdk/images/4.0/usage-maps.png" alt="" height="240" width="144" style="border:1px 249solid #ddd;border-radius: 6px;" /></a> 250<div style="padding-bottom:1em;font-size:.9em;padding-right:1.75em;"><!--<strong>Figure 2513.</strong>--> Data usage controls let you monitor total usage by network type and application and 252then set limits if needed.</div> 253</div> 254</div> 255 256<p style="margin-top:1em;margin-bottom:.75em;"><strong>Control over network 257data</strong></p> 258 259<p>Mobile devices can make extensive use of network data for streaming content, 260synchronizing data, downloading apps, and more. To meet the needs of users with 261<strong>tiered or metered data plans</strong>, Android 4.0 adds new controls for 262managing network data usage.</p> 263 264<p>In the Settings app, colorful charts show the total data usage on each 265network type (mobile or Wi-Fi), as well as amount of data used by each running 266application. Based on their data plans, users can optionally set warning levels 267or hard limits on data usage or disable mobile data altogether. Users can also 268manage the background data used by individual applications as needed.</p> 269 270 271<p style="margin-top:1em;margin-bottom:.75em;"><strong>Designed for 272accessibility</strong></p> 273 274<p>A variety of new features greatly enhance the accessibility of Android 4.0 275for blind or visually impaired users. Most important is a new 276<strong>explore-by-touch mode</strong> that lets users navigate without having 277to see the screen. Touching the screen once triggers audible feedback that 278identifies the UI component below; a second touch in the same component 279activates it with a full touch event. The new mode is especially important to 280support users on new devices that use virtual buttons in the System Bar, rather 281than dedicated hardware buttons or trackballs. Also, standard apps are updated 282to offer an improved accessibility experience. The <strong>Browser</strong> 283supports a script-based screen reader for reading favorite web content and 284navigating sites. For improved readability, users can also increase the default 285font size used across the system.</p> 286 287<p>The accessibility experience begins at first setup — a simple 288<strong>touch gesture</strong> during setup (clockwise square from upper left) 289activates all accessibility features and loads a setup tutorial. Once 290accessibility features are active, everything visible on the screen can be 291spoken aloud by the standard screen reader.</p> 292 293 294<h3 id="comms" style="color:#258AAF">Communication and sharing</h3> 295 296<div style="padding-top:0em;"> 297<div 298style="float:right;margin-left:20px;margin-top:1.5em;margin-bottom:0;padding-bottom 299: 0 ; width:490px"> 300<!--<img src="{@docRoot}sdk/images/4.0/contact-call.png" alt="" height="240" width="144" 301style="border:1px solid #ddd;border-radius: 6px;" />--> 302<a href="{@docRoot}sdk/images/4.0/contact-faves-lg.png" target="_android"> 303<img src="{@docRoot}sdk/images/4.0/contact-faves.png" alt="" height="240" width="144" 304style="border:1px solid #ddd;border-radius: 6px;padding:0" /></a> 305<a href="{@docRoot}sdk/images/4.0/contact-connect-lg.png" target="_android"> 306<img src="{@docRoot}sdk/images/4.0/contact-connect.png" alt="" height="240" width="144" 307style="border:1px solid #ddd;border-radius: 6px;padding:0" /></a> 308<a href="{@docRoot}sdk/images/4.0/contact-email-lg.png" target="_android"> 309<img src="{@docRoot}sdk/images/4.0/contact-email.png" alt="" height="240" width="144" 310style="border:1px solid #ddd;border-radius: 6px;padding:0" /></a> 311 312<div style="padding-bottom:1.25em;margin-top:0;padding-top:0;font-size:.9em"><!--<strong>Figure 3133.</strong>-->Contacts and profiles are integrated across apps and social networks, for a 314consistent, personal experience everywhere — from incoming calls to emails.</div> 315</div> 316</div> 317 318<p>Designed for the way people live, Android 4.0 integrates rich social 319communication and sharing touchpoints across the system, making it easy to talk, 320email, text, and share.</p> 321 322 323<p style="margin-top:1em;margin-bottom:.75em;"><strong>People and 324profiles</strong></p> 325 326<p>Throughout the system, a user’s social groups, profiles, and contacts are 327linked together and integrated for easy accessibility. At the center is a new 328<strong>People app</strong> that offers richer profile information, including a 329large profile picture, phone numbers, addresses and accounts, status updates, 330events, stream items, and a new button for connecting on integrated social networks. </p> 331 332<p>The user's own contact information is stored in a new <strong>"Me" 333profile</strong>, allowing easier sharing with apps and people. All of the 334user's integrated contacts are displayed in an easy to manage list, including 335controls over which contacts are shown from any integrated account or social 336network. Wherever the user navigates across the system, tapping a profile photo 337displays Quick Contacts, with large profile pictures, shortcuts to phone numbers, 338text messaging, and more. </p> 339 340 341<p style="margin-top:1em;margin-bottom:.75em;"><strong>Unified calendar, visual 342voicemail</strong></p> 343 344<p>To help organize appointments and events, an updated <strong>Calendar 345app</strong> brings together personal, work, school, and social agendas. With 346user permission, other applications can contribute events to the calendar and 347manage reminders, for an integrated view across multiple calendar providers. The 348app is redesigned to let users manage events more easily. Calendars are 349color-coded and users can <strong>swipe left or right</strong> to change dates 350and pinch to zoom in or out agendas. </p> 351 352<p>In the phone app, a new <strong>visual voicemail</strong> features integrates 353incoming messages, voice transcriptions, and audio files from one or more 354providers. Third-party applications can integrate with the Phone app to add 355their own voice messages, transcriptions, and more to the visual voicemail 356inbox. </p> 357 358<div style="padding-top:0em;"> 359<div style="margin-right:0em;float:left;width:282px;padding-top:1em;"> 360<a href="{@docRoot}sdk/images/4.0/camera-lg.png" target="_android"> 361<img src="{@docRoot}sdk/images/4.0/camera.png" alt="" width="240" height="144" style="border:1px 362solid #ddd;border-radius: 6px;" /></a> 363<a href="{@docRoot}sdk/images/4.0/gallery-edit-lg.png" target="_android"> 364<img src="{@docRoot}sdk/images/4.0/gallery-edit.png" alt="" width="240" height="144" 365style="border:1px solid #ddd;border-radius: 6px;" /></a> 366<a href="{@docRoot}sdk/images/4.0/gallery-share-lg.png" target="_android"> 367<img src="{@docRoot}sdk/images/4.0/gallery-share.png" alt="" width="240" height="144" 368style="border:1px solid #ddd;border-radius: 6px;" /></a> 369<div style="padding-bottom:1em;font-size:.9em;padding-right:2.75em;">Capture the picture you want, 370edit, and share instantly. </div> 371</div> 372</div> 373 374<p style="margin-top:1em;margin-bottom:.75em;"><strong>Rich and versatile camera 375capabilities</strong></p> 376 377<p>The Camera app includes many new features that let users capture special moments 378with great photos and videos. After capturing images, they can edit and share 379them easily with friends. </p> 380 381<p>When taking pictures, <strong>continuous focus</strong>, <strong>zero shutter 382lag exposure</strong>, and decreased shot-to-shot speed help capture clear, 383precise images. <strong>Stabilized image zoom</strong> lets users compose photos 384and video in the way they want, including while video is recording. For new 385flexibility and convenience while shooting video, users can now take 386<strong>snapshots at full video resolution</strong> just by tapping the screen 387as video continues to record.</p> 388 389<p>To make it easier to take great pictures of people, built-in <strong>face 390detection</strong> locates faces in the frame and automatically sets focus. For 391more control, users can <strong>tap to focus</strong> anywhere in the preview 392image. </p> 393 394<p>For capturing larger scenes, the Camera introduces a <strong>single-motion 395panorama</strong> mode. In this mode, the user starts an exposure and then 396slowly turns the Camera to encompass as wide a perspective as needed. The Camera 397assembles the full range of continuous imagery into a single panoramic 398photo.</p> 399 400<p>After taking a picture or video, users can quickly share it by email, text 401message, bluetooth, social networks, and more, just by tapping the thumbnail in 402the camera controls. </p> 403 404 405<div style="padding-top:0em;"> 406<div 407style="float:right;margin-left:20px;padding-top:1em;margin-bottom:1em;padding- 408bottom : 0 ;width:160px"> 409<img src="{@docRoot}sdk/images/4.0/gallery-widget.png" alt="" width="144" style="border:1px solid 410#ddd;border-radius: 6px;" /> 411<div style="padding-bottom:1.25em;margin-top:0;padding-top:0;font-size:.9em">A Photo Gallery widget 412on the home screen.</div> 413</div> 414 415<p style="margin-top:1em;margin-bottom:.75em;"><strong>Redesigned Gallery app 416with photo editor</strong></p> 417 418<p>The Gallery app now makes it easier to manage, show, and share photos and 419videos. For managing collections, a <strong>redesigned album layout</strong> 420shows many more albums and offers larger thumbnails. There are many ways to sort 421albums, including by time, location, people, and tags. To help pictures look 422their best, the Gallery now includes a powerful <strong>photo editor</strong>. 423Users can crop and rotate pictures, set levels, remove red eyes, add effects, 424and much more. After retouching, users can select one or multiple pictures or 425videos to share instantly over email, text messaging, bluetooth, social 426networks, or other apps.</p> 427 428<p>An improved <strong>Picture Gallery widget</strong> lets users look at 429pictures directly on their home screen. The widget can display pictures from a 430selected album, shuffle pictures from all albums, or show a single image. After 431adding the widget to the home screen, users can flick through the photo stacks 432to locate the image they want, then tap to load it in Gallery. </p> 433 434<div style="padding-top:0em;clear:right;"> 435<div 436style="float:right;margin-left:20px;padding-top:1em;margin-bottom:1em;padding- 437bottom : 0 ;width:320px"> 438<img src="{@docRoot}sdk/images/4.0/live-effects.png" alt="" width="297" style="border:1px solid 439#ddd;border-radius: 6px;" /> 440<div style="padding-bottom:1em;margin-top:0;padding-top:0;font-size:.9em">Live Effects let you 441change backgrounds and use Silly Faces during video.</div> 442</div> 443</div> 444 445<p style="margin-top:1em;margin-bottom:.75em;"><strong>Live Effects for transforming 446video</strong></p> 447 448<p>Live Effects is a collection of graphical transformations that add interest 449and fun to videos captured in the Camera app. For example, users can 450<strong>change the background</strong> behind them to any stock or custom image, 451for just the right setting when shooting videeo. Also available for video is 452Silly Faces, a set of morphing effects that use state-of-the-art face 453recognition and GPU filters to transform facial features. For example, you can 454use effects such as small eyes, big mouth, big nose, face squeeze, and more. 455Outside of the Camera app, Live Effects is available during video chat in the 456Google Talk app.</p> 457 458<div style="padding-top:0em;"> 459<div style="margsin-right:.8em;float:left;width:186px;padding-top:1em;"> 460<a href="{@docRoot}sdk/images/4.0/screenshot-lg.png" target="_android"> 461<img src="{@docRoot}sdk/images/4.0/screenshot.png" alt="" height="240" width="144" 462style="border:1px solid #ddd;border-radius: 6px;" /></a> 463<div style="padding-bottom:1.25em;margin-top:0;padding-top:0;font-size:.9em"> Snapping a 464screenshot.</div> 465</div> 466</div> 467</div> 468 469<p style="margin-top:1em;margin-bottom:.75em;"><strong>Sharing with screenshots</strong></p> 470 471<p>Users can now share what's on their screens more easily by taking 472screenshots. Hardware buttons let them snap a <strong>screenshot</strong> and 473store it locally. Afterward, they can view, edit, and share the screen shot in 474Gallery or a similar app.</p> 475 476 477<h3 id="cloud" style="color:#258AAF">Cloud-connected experience</h3> 478 479<div style="padding-top:0em;"> 480<div 481style="float:right;margin-left:20px;padding-top:1em;margin-bottom:0;padding-bottom: 4820 ; width:326px"> 483<a href="{@docRoot}sdk/images/4.0/browser-tabs-lg.png" target="_android"> 484<img src="{@docRoot}sdk/images/4.0/browser-tabs.png" alt="" height="240" width="144" 485style="border:1px solid #ddd;border-radius: 6px;" /></a> 486<a href="{@docRoot}sdk/images/4.0/browser-lg.png" target="_android"> 487<img src="{@docRoot}sdk/images/4.0/browser.png" alt="" height="240" width="144" style="border:1px 488solid #ddd;border-radius: 6px;" /></a> 489<div style="padding-bottom:1.25em;margin-top:0;padding-top:0;font-size:.9em"><!--<strong>Figure 4903.</strong>-->The Browser tabs menu <em>(left)</em> lets you quickly switch browser tabs. The 491options menu <em>(right)</em> gives you new ways to manage your browsing experience.</div> 492<img src="{@docRoot}sdk/images/4.0/bbench.png" alt="" width="310" /> 493<div style="padding-bottom:1em;margin-top:0;padding-top:0;font-size:.9em">Benchmark comparisons of 494Android Browser.</div> 495</div> 496</div> 497 498<p>Android has always been cloud-connected, letting users browse the web and 499sync photos, apps, games, email, and contacts — wherever they are and 500across all of their devices. Android 4.0 adds new browsing and email 501capabilities to let users take even more with them and keep communication 502organized.</p> 503 504 505<p style="margin-top:1em;margin-bottom:.75em;"><strong>Powerful web 506browsing</strong></p> 507 508<p>The Android Browser offers an experience that’s as rich and convenient as a 509desktop browser. It lets users instantly sync and manage <strong>Google Chrome 510bookmarks</strong> from all of their accounts, jump to their favorite content 511faster, and even save it for reading later in case there's no network 512available.</p> 513 514<p>To get the most out of web content, users can now request full 515<strong>desktop versions</strong> of web sites, rather than their mobile 516versions. Users can set their preference for web sites separately for each 517<strong>browser tab</strong>. For longer content, users can save a copy for 518<strong>offline reading</strong>. To find and open saved pages, users can browse 519a visual list that’s included with browser bookmarks and history. For better 520readability and accessibility, users can increase the browser’s <strong>zoom 521levels</strong> and override the system default <strong>text sizes</strong>.</p> 522 523<p>Across all types of content, the Android Browser offers dramatically improved 524<strong>page rendering performance</strong> through updated versions of the 525WebKit core and the V8 Crankshaft compilation engine for JavaScript. In 526benchmarks run on a Nexus S device, the Android 4.0 browser showed an 527improvement of nearly 220% over the Android 2.3 browser in the V8 Benchmark 528Suite and more than 35% in the SunSpider 9.1 JavaScript Benchmark. When run on a 529Galaxy Nexus device, the Android 4.0 browser showed improvement of nearly 550% 530in the V8 benchmark and nearly 70% in the SunSpider benchmark.</p> 531 532 533<p style="margin-top:1em;margin-bottom:.75em;"><strong>Improved 534email</strong></p> 535 536<p>In Android 4.0, email is easier to send, read, and manage. For composing 537email, <strong>improved auto-completion</strong> of recipients helps with 538finding and adding frequent contacts more quickly. For easier input of frequent 539text, users can now create <strong>quick responses</strong> and store them in 540the app, then enter them from a convenient menu when composing. When replying to 541a message, users can now toggle the message to Reply All and Forward without 542changing screens.</p> 543 544<p>For easier browsing across accounts and labels, the app adds an 545<strong>integrated menu</strong> of accounts and recent labels. To help users 546locate and organize IMAP and Exchange email, the Email app now supports 547<strong>nested mail subfolders</strong>, each with synchronization rules. Users 548can also search across folders on the server, for faster results. </p> 549 550<p>For <strong>enterprises</strong>, the Email app supports EAS v14. It supports 551EAS certificate authentication, provides ABQ strings for device type and mode, 552and allows automatic sync to be disabled while roaming. Administrators can also 553limit attachment size or disable attachments.</p> 554 555<p>For keeping track of incoming email more easily, a <strong>resizable Email 556widget</strong> lets users flick through recent email right from the home 557screen, then jump into the Email app to compose or reply.</p> 558 559 560<div style="padding-top:0em;"> 561<div style="margsin-right:.8em;float:left;width:186px;padding-top:1em;"> 562<a href="{@docRoot}sdk/images/4.0/beam-lg.png" target="_android"> 563<img src="{@docRoot}sdk/images/4.0/beam.png" alt="" height="240" width="144" style="border:1px solid 564#ddd;border-radius: 6px;" /></a> 565<div 566style="padding-bottom:1em;margin-top:0;padding-top:0;font-size:.9em;padding-right:1.5em;">Android 567Beam lets users share what they are using with a single tap.</div> 568</div> 569</div> 570 571<h3 id="innovation" style="color:#258AAF">Innovation</h3> 572 573<p>Android is continously driving innovation forward, pushing the boundaries of 574communication and sharing with new capabilities and interactions.</p> 575 576<p style="margin-top:1em;margin-bottom:.75em;"><strong>Android Beam for 577NFC-based sharing</strong></p> 578 579<p>Android Beam is an innovative, convenient feature for sharing across two 580NFC-enabled devices, It lets people instantly exchange favorite apps, contacts, 581music, videos — almost anything. It’s incredibly simple and convenient to 582use — there’s no menu to open, application to launch, or pairing needed. 583Just touch one Android-powered phone to another, then tap to send.</p> 584 585<p>For sharing apps, Android Beam pushes a link to the app's details page in 586Google Play. On the other device, the Google Play client app launches and loads the 587details page, for easy downloading of the app. Individual apps can build on 588Android Beam to add other types of interactions, such as passing game scores, 589initiating a multiplayer game or chat, and more.</p> 590 591<div style="padding-top:0em;"> 592<div 593style="float:right;margin-left:20px;margin-top:.5em;margin-bottom:0;padding-bottom: 5940 ; width:160px"> 595<a href="{@docRoot}sdk/images/4.0/face-unlock-lg.png" target="_android"> 596<img src="{@docRoot}sdk/images/4.0/face-unlock.png" alt="" height="240" width="144" style="border:1px solid #ddd;border-radius: 6px;" /></a> 597<div style="padding-bottom:1em;margin-top:0;padding-top:0;font-size:.9em">Face recognition lets you 598unlock your phone with your face.</div> 599</div> 600</div> 601 602<p style="margin-top:1em;margin-bottom:.75em;"><strong>Face Unlock</strong></p> 603 604<p>Android 4.0 introduces a completely new approach to securing a device, making 605each person's device even more personal — Face Unlock is a new screen-lock 606option that lets users unlock their devices with their faces. It takes advantage 607of the device front-facing camera and state-of-the-art facial recognition 608technology to register a face during setup and then to recognize it again when 609unlocking the device. Users just hold their devices in front of their faces to 610unlock, or use a backup PIN or pattern. </p> 611 612 613<p style="margin-top:1em;margin-bottom:.75em;"><strong>Wi-Fi P2P and Bluetooth HDP</strong></p> 614 615<p>Support for <strong>Wi-Fi peer-to-peer (P2P)</strong> lets users connect directly to nearby peer 616devices over Wi-Fi, for more reliable, higher-speed communication (in compliance with the Wi-Fi 617Alliance's <a href="http://www.wi-fi.org/discover-and-learn/wi-fi-direct" 618 class="external-link">Wi-Fi Direct™</a> 619certification program). No internet connection or tethering is needed. Through third-party apps, 620users can connect to compatible devices to take advantage of new features such as instant sharing 621of files, photos, or other media; streaming video or audio from another device; or connecting to 622compatible printers or other devices.</p> 623 624 625<p>Android 4.0 also introduces built-in support for connecting to <strong>Bluetooth Health Device Profile (HDP)</strong> devices. With support from third-party apps, users can connect to wireless medical devices and sensors in hospitals, fitness centers, homes, and elsewhere.</p> 626 627 628<h2 id="DeveloperApis" style="clear:right">New Developer Features</h2> 629 630<!-- <ul> 631<li><a href="#ui-dev">Unified UI framework for phones, tablets, and more</a></li> 632<li><a href="#communication-dev">Communication and sharing</a></li> 633<li><a href="#media-dev">New media capabilities</a></li> 634<li><a href="#connectivity-dev">New types of connectivity</a></li> 635<li><a href="#uicomp-dev">New UI components and capabilities</a></li> 636<li><a href="input-dev">New input types and text services</a></li> 637<li><a href="#accessibility-dev">Enhanced accessibility APIs</a></li> 638<li><a href="#data-dev">Efficient network usage</a></li> 639<li><a href="#security-dev">Security for apps and content</a></li> 640<li><a href="#enterprise-dev">Enhancements for Enterprise</a></li> 641</ul>--> 642 643<h3 id="ui-dev">Unified UI framework for phones, tablets, and more</h3> 644 645<p>Android 4.0 brings a unified UI framework that lets developers create 646elegant, innovative apps for phones, tablets, and more. It includes all of the 647familiar Android 3.x interface elements and APIs — fragments, content 648loaders, Action Bar, rich notifications, resizable home screen widgets, and more 649— as well as new elements and APIs.</p> 650 651<p>For developers, the unified UI framework in Android 4.0 means new UI tools, 652consistent design practices, simplified code and resources, and streamlined 653development across the range of Android-powered devices.</p> 654 655<div class="sidebox-wrapper"> 656<div class="sidebox"> 657 <h3>Key Honeycomb developer features, <br>now for phones too</h3> 658 659<p>Core UI</p> 660<ul> 661<li>Fragments and content loaders</li> 662<li>Resizeable home screen widgets</li> 663<li>Rich notifications</li> 664<li>Multi-selection, drag-drop, clipboard</li> 665<li>Improved screen-support API</li> 666<li>Hardware-accelerated 2D graphics</li> 667</ul> 668 669<p>Graphics and animation</p> 670<ul> 671<li>Property-based animation</li> 672<li>Renderscript 3D graphics</li> 673</ul> 674 675<p>Media and connectivity</p> 676<ul> 677<li>HTTP Live streaming</li> 678<li>Bluetooth A2DP and HSP devices</li> 679<li>Support for RTP</li> 680<li>MTP/PTP file transfer</li> 681<li>DRM framework</li> 682<li>Input from keyboard, mouse, gamepad, joystick</li> 683</ul> 684 685<p>Enterprise</p> 686<ul> 687<li>Full device encryption</li> 688<li>DPM policies for encrypted storage and passwords</li> 689</ul> 690</div> 691</div> 692 693<h3 id="communication-dev">Communication and sharing</h3> 694 695<p>Android 4.0 extends social and sharing features to any application on the 696device. Applications can integrate contacts, profile data, stream items, 697and calendar events from any of the user’s activities or social networks.</p> 698 699 700<p style="margin-top:1em;margin-bottom:.75em;"><strong>Social API</strong></p> 701 702<p>A shared social provider and API provide a new unified store for contacts, 703profile data, stream items, and photos. Any app or social network with user 704permission can contribute raw contacts and make them accessible to other apps 705and networks. Applications with user permission can also read profile data from 706the provider and display it in their applications.</p> 707 708<p>The social API lets applications store standard contact data as well as new 709types of content for any given contact, including large profile photos, stream 710items, and recent activity feedback. Recent activity feedback is a standard way for 711applications to “tag” a contact with common activity, such as when the user 712calls the contact or sends an email or SMS message. The social provider uses the 713recent activity feedback as a new signal in ranking, such as for name 714auto-complete, to keep the most relevant contacts ranked closest to the top.</p> 715 716<p>Applications can also let users set up a social connection to a contact from 717the People app. When the user touches Add Connection in a contact, the app 718sends a public intent that other apps can handle, displaying any UI needed 719to create the social connection.</p> 720 721<p>Building on the social API, developers can add powerful new interactions that 722span multiple social networks and contacts sources.</p> 723 724 725<p style="margin-top:1em;margin-bottom:.75em;"><strong>Calendar API</strong></p> 726 727<p>A shared calendar content provider and framework API make it easier for 728developers to add calendar services to their apps.</p> 729 730<p>With user permission, any application can add events to the shared database 731and manage dates, attendees, alerts, and reminders. Applications can also read 732entries from the database, including events contributed by other applications, 733and handle the display of event alerts and reminders. Using the calendar 734provider, applications can take advantage of event data sourced from a variety 735of apps and protocols, to offer innovative ways of viewing and managing a user’s 736events. Apps can also use calendar data to improve the relevance of their 737other content.</p> 738 739<p>For lighter-weight access to calendar services, the Calendar app defines a 740set of public Intents for creating, viewing, and editing events. Rather than 741needing to implement a calendar UI and integrate directly with the calendar 742provider, applications can simply broadcast calendar Intents. When the Calendar 743app receives the Intents, it launches the appropriate UI and stores any event 744data entered. Using calendar Intents, for example, apps can let users add events 745directly from lists, dialogs, or home screen widgets, such as for making 746restaurant reservations or booking time with friends.</p> 747 748 749<p style="margin-top:1em;margin-bottom:.75em;"><strong>Visual voicemail 750API</strong></p> 751 752<p>A shared Voicemail provider and API allow developers to build applications 753that contribute to a unified voicemail store. Voicemails are displayed and 754played in the call log tab of the platform’s Phone app.</p> 755 756 757<p style="margin-top:1em;margin-bottom:.75em;"><strong>Android Beam</strong></p> 758 759<p>Android Beam is an NFC-based feature that lets users instantly share 760information about the apps they are using, just by touching two NFC-enabled 761phones together. When the devices are in range — within a few centimeters 762— the system sets up an NFC connection and displays a sharing UI. To share 763whatever they are viewing with the other device, users just touch the screen. 764</p> 765 766<p>For developers, Android Beam is a new way of triggering almost any type of 767proximity-based interaction. For example, it can let users instantly exchange 768contacts, set up multiplayer gaming, join a chat or video call, share a photo or 769video, and more. The system provides the low-level NFC support and the sharing 770UI, while the foreground app provides lightweight data to transfer to the other 771device. Developers have complete control over the data that is shared and how it 772is handled, so almost any interaction is possible. For larger payloads, 773developers can even use Android Beam to initiate a connection and transfer the 774data over Bluetooth, without the need for user-visible pairing.</p> 775 776<p>Even if developers do not add custom interactions based on Android Beam they 777can still benefit from it being deeply integrated into Android. By default the 778system shares the app’s Google Play URL, so it’s easy for the user to 779download or purchase the app right away.</p> 780 781 782<p style="margin-top:1em;margin-bottom:.75em;"><strong>Modular sharing 783widget</strong></p> 784 785<p>The UI framework includes a new widget, ShareActionProvider, that lets 786developers quickly embed standard share functionality and UI in the Action Bar 787of their applications. Developers simply add ShareActionProvider to the menu and 788set an intent that describes the desired sharing action. The system handles the 789rest, building up the list of applications that can handle the share intent and 790dispatching the intent when the user chooses from the menu.</p> 791 792 793<h3 id="media-dev">New media capabilities</h3> 794 795<p style="margin-top:1em;margin-bottom:.75em;"><strong>Low-level streaming 796multimedia</strong></p> 797 798<p>Android 4.0 provides a direct, efficient path for low-level streaming 799multimedia. The new path is ideal for applications that need to maintain 800complete control over media data before passing it to the platform for 801presentation. For example, media applications can now retrieve data from any 802source, apply proprietary encryption/decryption, and then send the data to the 803platform for display.</p> 804 805<p>Applications can now send processed data to the platform as a multiplexed 806stream of audio/video content in MPEG-2 transport stream format. The platform 807de-muxes, decodes, and renders the content. The audio track is rendered to the 808active audio device, while the video track is rendered to either a Surface or a 809SurfaceTexture. When rendering to a SurfaceTexture, the application can apply 810subsequent graphics effects to each frame using OpenGL.</p> 811 812<p>To support this low-level streaming, the platform introduces a new native API 813based on <a href="http://www.khronos.org/openmax/al/" target="_top">Khronos 814OpenMAX AL 1.0.1</a>. The API is implemented on the same underlying services as 815the platform’s existing OpenSL ES API, so developers can make use of both APIs 816together if needed. Tools support for low-level streaming multimedia will be 817available in an upcoming release of the Android NDK.</p> 818 819 820<p style="margin-top:1em;margin-bottom:.75em;"><strong>New camera 821capabilities</strong></p> 822 823<p>Developers can take advantage of a variety of new camera features in Android 8244.0. ZSL exposure, continuous focus, and image zoom let apps capture better 825still and video images, including during video capture. Apps can even capture 826full-resolution snapshots while shooting video. Apps can now set custom metering 827regions in a camera preview, then manage white balance and exposure dynamically 828for those regions. For easier focusing and image processing, a face-detection 829service identifies and tracks faces in a preview and returns their screen 830coordinates.</p> 831 832 833<p style="margin-top:1em;margin-bottom:.75em;"><strong>Media effects for 834transforming images and video</strong></p> 835 836<p>A set of high-performance transformation filters let developers apply rich 837effects to any image passed as an OpenGL ES 2.0 texture. Developers can adjust 838color levels and brightness, change backgrounds, sharpen, crop, rotate, add lens 839distortion, and apply other effects. The transformations are processed by the 840GPU, so they are fast enough for processing image frames loaded from disk, 841camera, or video stream.</p> 842 843 844<p style="margin-top:1em;margin-bottom:.75em;"><strong>Audio remote 845controls</strong></p> 846 847<p>Android 4.0 adds a new audio remote control API that lets media applications 848integrate with playback controls that are displayed in a remote view. Media 849applications can integrate with a remote music playback control that’s built 850into in the platform’s lock screen, allowing users to control song selection and 851playback without having to unlock and navigate to the music app.</p> 852 853<p>Using the audio remote control API, any music or media app can register to 854receive media button events from the remote control and then manage play state 855accordingly. The application can also supply metadata to the remote control, 856such as album art or image, play state, track number and description, duration, 857genre, and more.</p> 858 859 860<p style="margin-top:1em;margin-bottom:.75em;"><strong>New media codecs and 861containers</strong></p> 862 863<p>Android 4.0 adds support for additional media types and containers to give 864developers access to the formats they need. For high-quality compressed images, 865the media framework adds support for WebP content. For video, the framework now 866supports streaming VP8 content. For streaming multimedia, the framework supports 867HTTP Live streaming protocol version 3 and encoding of ADTS-contained AAC 868content. Additionally, developers can now use Matroska containers for Vorbis and 869VP8 content.</p> 870 871 872<h3 id="connectivity-dev">New types of connectivity</h3> 873 874<p style="margin-top:1em;margin-bottom:.75em;"><strong>Wi-Fi P2P</strong></p> 875 876<p>Developers can use a framework API to discover and connect directly to nearby devices over a 877high-performance, secure Wi-Fi peer-to-peer (P2P) connection. No internet connection or hotspot is 878needed. Android's Wi-Fi P2P framework complies with the Wi-Fi Alliance's <a href= 879"http://www.wi-fi.org/discover-and-learn/wi-fi-direct" class="external-link">Wi-Fi Direct™</a> 880certification program.</p> 881 882 883<p>Wi-Fi peer-to-peer (P2P) opens new opportunities for developers to add innovative 884features to their applications. Applications can use Wi-Fi P2P to share 885files, photos, or other media between devices or between a desktop computer and 886an Android-powered device. Applications could also use Wi-Fi P2P to stream 887media content from a peer device such as a digital television or audio player, 888connect a group of users for gaming, print files, and more.</p> 889 890 891<p style="margin-top:1em;margin-bottom:.75em;"><strong>Bluetooth Health Device 892Profile (HDP)</strong></p> 893 894<p>Developers can now build powerful medical applications that use Bluetooth to 895communicate with wireless devices and sensors in hospitals, fitness centers, 896homes, and elsewhere. Applications can collect and manage data from HDP source 897devices and transmit it to backend medical applications such as records systems, 898data analysis services, and others.</p> 899 900<p>Using a framework API, applications can use Bluetooth to discover nearby 901devices, establish reliable or streaming data channels, and manage data 902transmission. Applications can supply any IEEE 11073 Manager to retrieve and 903interpret health data from Continua-certified devices such as heart-rate 904monitors, blood meters, thermometers, and scales. </p> 905 906 907<h3 id="uicomp-dev">New UI components and capabilities</h3> 908 909<p style="margin-top:1em;margin-bottom:.75em;"><strong>Layout 910enhancements</strong></p> 911 912<p>A new layout, GridLayout, improves the performance of Android applications by 913supporting flatter view hierarchies that are faster to layout and render. 914Because hierarchies are flatter, developers can also manage alignments between 915components that are visually related to each other even when they are not 916logically related, for precise control over application UI. GridLayout is also 917specifically designed to be configured by drag-and-drop design tools such as the 918ADT Plug-in for Eclipse.</p> 919 920 921<p style="margin-top:1em;margin-bottom:.75em;"><strong>OpenGL ES texture 922views</strong></p> 923 924<p>A new TextureView object lets developers directly integrate OpenGL ES 925textures as rendering targets in a UI hierarchy. The object lets developers 926display and manipulate OpenGL ES rendering just as they would a normal view 927object in the hierarchy, including moving, transforming, and animating the view 928as needed. The TextureView object makes it easy for developers to embed camera 929preview, decoded video, OpenGL game scenes, and more. TextureView can be viewed 930as a more powerful version of the existing SurfaceView object, since it offers 931the same benefits of access to a GL rendering surface, with the added advantage 932of having that surface participate fully in the normal view hierarchy.</p> 933 934 935<p style="margin-top:1em;margin-bottom:.75em;"><strong>Hardware-accelerated 2D 936drawing</strong></p> 937 938<p>All Android-powered devices running Android 4.0 are required to support 939hardware-accelerated 2D drawing. Developers can take advantage of this to add 940great UI effects while maintaining optimal performance on high-resolution 941screens, even on phones. For example, developers can rely on accelerated 942scaling, rotation, and other 2D operations, as well as accelerated UI components 943such as TextureView and compositing modes such as filtering, blending, and 944opacity.</p> 945 946 947<h3 id="input-dev">New input types and text services</h3> 948 949<p style="margin-top:1em;margin-bottom:.75em;"><strong>Stylus input, button 950support, hover events</strong></p> 951 952<p>Android 4.0 includes full support for stylus input events, including tilt and 953distance axes, pressure, and related motion event properties. To help 954applications distinguish motion events from different sources, the platform adds 955distinct tool types for stylus, finger, mouse, and eraser. For improved input 956from multi-button pointing devices, the platform now provides distinct primary, 957secondary, and tertiary buttons, as well as back and forward buttons. 958Hover-enter and hover-exit events are also added, for improved navigation and 959accessibility. Developers can build on these new input features to add powerful 960interactions to their apps, such as precise drawing and gesturing, handwriting 961and shape recognition, improved mouse input, and others.</p> 962 963 964<p style="margin-top:1em;margin-bottom:.75em;"><strong>Text services API for 965integrating spelling checkers</strong></p> 966 967<p>Android 4.0 lets applications query available text services such as 968dictionaries and spell checkers for word suggestions, corrections, and similar 969data. The text services are external to the active IME, so developers can create 970and distribute dictionaries and suggestion engines that plug into the platform. 971When an application receives results from a text service — for example, 972word suggestions — it can display them in a dedicated suggestion popup 973window directly inside the text view, rather than relying on the IME to display 974them. </p> 975 976 977<h3 id="accessibility-dev">Enhanced accessibility APIs</h3> 978 979<p>Android 4.0 adds new accessibility features and an enhanced API to let 980developers improve the user experience in their apps, especially on devices that 981don’t have hardware buttons. For accessibility services such as screen readers 982in particular, the platform offers new APIs to query window content, for easier 983navigation, better feedback, and richer user interfaces.</p> 984 985 986<p style="margin-top:1em;margin-bottom:.75em;"><strong>Accessibility 987API</strong></p> 988 989<p>To let applications manage interactions more effectively when accessibility 990features are enabled, the platform adds accessibility events for 991explore-by-touch mode, scrolling, and text selection. For these and other 992events, the platform can attach a new object called an accessibility record that 993provides extra information about the event context.</p> 994 995<p>Using the accessibility record and related APIs, applications can now access 996the view hierarchy associated with an event. Applications can query for key 997properties such as parent and child nodes, available states, supported actions, 998screen position, and more. Applications can also request changes to certain 999properties to help manage focus and selected state. For example, an 1000accessibility service could use these new capabilities to add convenient 1001features such as screen-search by text. </p> 1002 1003 1004<p style="margin-top:1em;margin-bottom:.75em;"><strong>Text-to-speech 1005API</strong></p> 1006 1007<p>A new framework API lets developers write text-to-speech engines and make 1008them available to any app requesting TTS capabilities.</p> 1009 1010 1011<h3 id="data-dev">Efficient network usage</h3> 1012 1013<p>In Android 4.0, users can see how much network data their running apps are 1014using. They can also set limits on data usage by network type and disable 1015background data usage for specific applications. In this context, developers 1016need to design their apps to run efficiently and follow best practices for 1017checking the network connection. Android 4.0 provides network APIs to let 1018applications meet those goals.</p> 1019 1020<p>As users move between networks or set limits on network data, the platform 1021lets applications query for connection type and availability. Developers can use 1022this information to dynamically manage network requests to ensure the best 1023experience for users. Developers can also build custom network and data-usage 1024options into their apps, then expose them to users directly from Settings by 1025means of a new system Intent.</p> 1026 1027 1028<h3 id="security-dev">Security for apps and content</h3> 1029 1030<p style="margin-top:1em;margin-bottom:.75em;"><strong>Secure management of 1031credentials</strong></p> 1032 1033<p>Android 4.0 makes it easier for applications to manage authentication and 1034secure sessions. A new keychain API and underlying encrypted storage let 1035applications store and retrieve private keys and their corresponding certificate 1036chains. Any application can use the keychain API to install and store user 1037certificates and CAs securely.</p> 1038 1039 1040<p style="margin-top:1em;margin-bottom:.75em;"><strong>Address Space Layout 1041Randomization</strong></p> 1042 1043<p>Android 4.0 now provides address space layout randomization (ASLR) to help 1044protect system and third party applications from exploitation due to 1045memory-management issues.</p> 1046 1047 1048<h3 id="enterprise-dev">Enhancements for Enterprise</h3> 1049 1050<p style="margin-top:1em;margin-bottom:.75em;"><strong>VPN client 1051API</strong></p> 1052 1053<p>Developers can now build or extend their own VPN solutions on the platform 1054using a new VPN API and underlying secure credential storage. With user 1055permission, applications can configure addresses and routing rules, process 1056outgoing and incoming packets, and establish secure tunnels to a remote server. 1057Enterprises can also take advantage of a standard VPN client built into the 1058platform that provides access to L2TP and IPSec protocols.</p> 1059 1060 1061<p style="margin-top:1em;margin-bottom:.75em;"><strong>Device policy management 1062for camera</strong></p> 1063 1064<p>The platform adds a new policy control for administrators who manage devices 1065using an installed Device Policy Manager. Administrators can now remotely 1066disable the camera on a managed device for users working in sensitive 1067environments.</p> 1068 1069 1070 1071 1072 1073