1page.title=Android 2.2 Platform Highlights 2 3@jd:body 4 5 6<style type="text/css"> 7#jd-content { 8 max-width:800px; 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 60px 40px; 18 margin-top:-15px; 19} 20#jd-content table.columns { 21 margin:0 0 1em 0; 22} 23#jd-content table.columns td { 24 padding:0; 25} 26#jd-content table.columns td+td { 27 padding:0 2em; 28} 29#jd-content table.columns td img { 30 margin:0; 31} 32#jd-content table.columns td+td>*:first-child { 33 margin-top:-2em; 34} 35.green { 36 color:#8db529; 37 font-weight:bold; 38} 39</style> 40 41 42<div class="video"> 43<object width="278 height="180"> 44<param name="movie" value="http://www.youtube.com/v/yAZYSVr2Bhc&hl=en&fs=1&"></param> 45<param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" 46value="always"></param> 47<embed src="http://www.youtube.com/v/yAZYSVr2Bhc&hl=en&fs=1&" type="application/x-shockwave-flash" 48allowscriptaccess="always" allowfullscreen="true" width="278" height="180"></embed> 49</object> 50</div> 51 52 53<p>The Android 2.2 platform introduces many new and exciting features for 54users and developers. This document provides a glimpse at some of the new user features 55and technologies in Android 2.2. For more information about the new developer APIs, see the <a 56href="android-2.2.html#api">Android 2.2 version notes</a>.</p> 57 58<ul> 59 <li><a href="#UserFeatures">New User Features</a></li> 60 <li><a href="#PlatformTechnologies">New Platform Technologies</a></li> 61 <li><a href="#DeveloperServices">New Developer Services</a></li> 62 <li><a href="#DeveloperApis">New Developer APIs</a></li> 63</ul> 64 65 66 67<h2 id="UserFeatures" style="clear:right">New User Features</h2> 68 69<h3>Home</h3> 70 71<table class="columns" style="max-width:800px"> 72<tr> 73 <td> 74<img src="images/2.2/22home.png" alt="" height=230 /> 75 </td> 76 <td> 77<p style="margin-top:0">New Home screen <span class="green">tips widget</span> assists new users on 78how to configure the 79home screen with shortcuts and widgets and how to make use of multiple home screens.</p> 80<p>The Phone, applications Launcher, and Browser now have <span class="green">dedicated 81shortcuts</span> on the Home screen, making it easy to access them from any of the 5 home screen 82panels.</p> 83 </td> 84</tr> 85</table> 86 87 88 89<h3>Exchange support</h3> 90 91<table class="columns" style="max-width:800px"> 92<tr> 93 <td> 94<p><span class="green">Improved security</span> with the addition of numeric pin or alpha-numeric 95password options to unlock device. Exchange administrators can enforce password policy across 96devices.</p> 97<p><span class="green">Remote wipe:</span> Exchange administrators can remotely reset the device to 98factory defaults to secure data in case device is lost or stolen.</p> 99<p><span class="green">Exchange Calendars are now supported</span> in the Calendar application.</p> 100<p><span class="green">Auto-discovery:</span> you just need to know your user-name and password to 101easily set up and sync an Exchange account (available for Exchange 2007 and higher).</p> 102<p><span class="green">Global Address Lists look-up</span> is now available in the Email 103application, enabling users to auto-complete recipient names from the directory.</p> 104 </td> 105 <td> 106<img src="images/2.2/22exchange.png" alt="" height=300 /> 107 </td> 108</tr> 109</table> 110 111 112<h3>Camera and Gallery</h3> 113 114<table class="columns" style="max-width:800px"> 115<tr> 116 <td> 117<img src="images/2.2/22gallery.png" alt="" height=220 /> 118 </td> 119 <td> 120<p>Gallery allows you to <span class="green">peek into picture stacks</span> using a zoom 121gesture.</p> 122<p>Camera <span class="green">onscreen buttons</span> provide easy access to a new UI for 123controling zoom, flash, white balance, geo-tagging, focus and exposure. Camcorder also provides 124an easy way to set video size/quality for MMS and YouTube.</p> 125<p>With the <span class="green">LED flash</span> now enabled for the Camcorder, videos can be shot 126at night or in low light settings.</p> 127 </td> 128</tr> 129</table> 130 131 132<h3>Portable hotspot</h3> 133 134<table class="columns" style="max-width:800px"> 135<tr> 136 <td> 137<p>Certain devices like the Nexus One can be turned into <span class="green">a portable Wi-Fi 138hotspot</span> that can be shared with up to 8 devices.</p> 139<p>You can use your Android-powered phone as a 3G connection for a Windows or Linux laptop by 140connecting their phone to the computer with a USB cable. The connection is then shared between the 141two devices.</p> 142 </td> 143 <td> 144<img src="images/2.2/22hotspot.png" alt="" height=180 /> 145 </td> 146</tr> 147</table> 148 149 150<h3>Multiple keyboard languages</h3> 151 152<table class="columns" style="max-width:800px"> 153<tr> 154 <td> 155<img src="images/2.2/22keyboard.png" alt="" height=220 /> 156 </td> 157 <td> 158<p>Multi-lingual users can add multiple languages to the keyboard and <span class="green">switch 159between multiple Latin-based input languages</span> by swiping across the space bar. This changes 160the keys as well as the auto-suggest dictionary.</p> 161 </td> 162</tr> 163</table> 164 165 166<h3>Improved performance</h3> 167 168<table class="columns" style="max-width:800px"> 169<tr> 170 <td> 171<p><span class="green">Performance of the browser</span> has been enhanced using the V8 engine, 172which enables faster loading of JavaScript-heavy pages.</p> 173<p><span class="green">Dalvik Performance Boost:</span> 2x-5x performance speedup for CPU-heavy code 174over Android 2.1 with Dalvik JIT.</p> 175<p>The graph to the right shows the performance <span class="green">speedup</span> from Android 2.1 176to Android 2.2 using various benchmark tests. For example, LinPack is now more than 5 times 177faster.</p> 178<p><span class="green">Kernel Memory Management Boost:</span> Improved memory reclaim by up to 20x, 179which results in faster app switching and smoother performance on memory-constrained devices.</p> 180 </td> 181 <td> 182<img src="images/2.2/jit-graph.png" alt="" height=200 /> 183 </td> 184</tr> 185</table> 186 187 188 189 190 191<h2 id="PlatformTechnologies">New Platform Technologies</h2> 192 193 194<h3>Media framework</h3> 195 196<ul> 197 <li>New media framework (Stagefright) that supports local file playback and HTTP progressive 198streaming</li> 199 <li>Continued support for OpenCore in Android 2.2</li> 200</ul> 201 202 203<h3>Bluetooth</h3> 204 205<ul> 206 <li>Voice dialing over Bluetooth</li> 207 <li>Ability to share contacts with other phones</li> 208 <li>Support for Bluetooth enabled car and desk docks</li> 209 <li>Improved compatibility matrix with car kits and headsets</li> 210</ul> 211 212 213<h3>2.6.32 kernel upgrade</h3> 214 215<ul> 216 <li>HIGHMEM support for RAM >256MB</li> 217 <li>SDIO scheduling and BT improvements</li> 218</ul> 219 220 221 222 223<h2 id="DeveloperServices">New Developer Services</h2> 224 225 226<h3>Android Cloud to Device Messaging</h3> 227 228<p>Apps can utilize Android Cloud to Device Messaging to enable mobile alert, send to phone, and 229two-way push sync functionality.</p> 230 231 232<h3>Android Application Error Reports</h3> 233 234<p>New bug reporting feature for Android Market apps enables developers to receive crash and freeze 235reports from their users. The reports will be available when they log into their publisher 236account.</p> 237 238 239 240 241<h2 id="DeveloperApis">New Developer APIs</h2> 242 243 244<h3>Apps on external storage</h3> 245 246<p>Applications can now request installation on the shared external storage (such as an SD 247card).</p> 248 249 250<h3>Media framework</h3> 251 252<p>Provides new APIs for audio focus, routing audio to SCO, and auto-scan of files to media 253database. Also provides APIs to let applications detect completion of sound loading and auto-pause 254and auto-resume audio playback.</p> 255 256 257<h3>Camera and Camcorder</h3> 258 259<p>New preview API doubles the frame rate from ~10FPS to ~20FPS. Camera now supports portrait 260orientation, zoom controls, access to exposure data, and a thumbnail utility. A new camcorder 261profile enables apps to determine device hardware capablities.</p> 262 263 264<h3>Graphics</h3> 265 266<p>New APIs for OpenGL ES 2.0, working with YUV image format, and ETC1 for texture 267compression.</p> 268 269 270<h3>Data backup</h3> 271 272<p>Apps can participate in data backup and restore, to ensure that users maintain their data 273after performing a factory reset or when switching devices.</p> 274 275 276<h3>Device policy manager</h3> 277 278<p>New device policy management APIs allow developers to write "device administrator" applications 279that can control security features on the device, such as the minimum password strength, data wipe, 280and so on. Users can select the administrators that are enabled on their devices.</p> 281 282 283<h3>UI framework</h3> 284 285<p>New "car mode" and "night mode" controls and configurations allow applications to adjust their UI 286for these situations. A scale gesture detector API provides improved definition of multi-touch 287events. Applications can now customize the bottom strip of a TabWidget.</p> 288 289 290 291<p>For more information about the new developer APIs, see the <a 292href="android-2.2.html#api">Android 2.2 version notes</a> and the <a 293href="{@docRoot}sdk/api_diff/8/changes.html">API Differences Report</a>.</p> 294 295 296 297 298 299
