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      1 page.title=Platform Versions
      2 @jd:body
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     38 
     39 <p>This page provides data about the relative number of active devices
     40 running a given version of the Android platform. This can help you
     41 understand the landscape of device distribution and decide how to prioritize
     42 the development of your application features for the devices currently in
     43 the hands of users. For information about how to target your application to devices based on
     44 platform version, see <a href="{@docRoot}guide/appendix/api-levels.html">API Levels</a>.</p>
     45 
     46 
     47 <h3 id="Current">Current Distribution</h3>
     48 
     49 <p>The following pie chart and table is based on the number of Android devices that have accessed
     50 Android Market within a 14-day period ending on the data collection date noted below.</p>
     51 
     52 <div class="dashboard-panel">
     53 
     54 <img alt="" height="250" width="460"
     55 src="http://chart.apis.google.com/chart?&cht=p&chs=460x250&chd=t:7.9,15.0,0.1,40.8,36.2&chl=
     56 Android%201.5|Android%201.6|Other*|Android%202.1|Android%202.2&chco=c4df9b,
     57 6fad0c" />
     58 
     59 <table>
     60 <tr>
     61   <th>Platform</th>
     62   <th>API Level</th>
     63   <th>Distribution</th>
     64 </tr>
     65 <tr><td>Android 1.5</td><td>3</td><td>7.9%</td></tr>
     66 <tr><td>Android 1.6</td><td>4</td><td>15.0%</td></tr>
     67 <tr><td>Android 2.1</td><td>7</td><td>40.8%</td></tr>
     68 <tr><td>Android 2.2</td><td>8</td><td>36.2%</td></tr>
     69 </table>
     70 
     71 <p><em>Data collected during two weeks ending on November 1, 2010</em></p>
     72 <p style="font-size:.9em">* <em>Other: 0.1% of devices running obsolete versions</em></p>
     73 
     74 </div><!-- end dashboard-panel -->
     75 
     76 
     77 <h3 id="Historical">Historical Distribution</h3>
     78 
     79 <p>The following stacked line graph provides a history of the relative number of
     80 active Android devices running different versions of the Android platform. It also provides a
     81 valuable perspective of how many devices your application is compatible with, based on the
     82 platform version.</p>
     83 
     84 <p>Notice that the platform versions are stacked on top of each other with the oldest active
     85 version at the top. This format indicates the total percent of active devices that are compatible
     86 with a given version of Android. For example, if you develop your application for
     87 the version that is at the very top of the chart, then your application is
     88 compatible with 100% of active devices (and all future versions), because all Android APIs are
     89 forward compatible. Or, if you develop your application for a version lower on the chart,
     90 then it is currently compatible with the percentage of devices indicated on the y-axis, where the
     91 line for that version meets the y-axis on the right.</p>
     92 
     93 <p>Each dataset in the timeline is based on the number of Android devices that accessed
     94 Android Market within a 14-day period ending on the date indicated on the x-axis.</p>
     95 
     96 <div class="dashboard-panel">
     97 
     98 <img alt="" height="250" width="660" style="padding:5px;background:#fff"
     99 src="http://chart.apis.google.com/chart?&cht=lc&chs=660x250&chxt=x,y,r&chxr=0,0,12|1,0,100|2,0,100&
    100 chxl=0%3A%7C2010/05/01%7C05/15%7C06/01%7C06/15%7C07/01%7C07/15%7C08/01%7C08/15%7C09/01%7C09/15%7C10/
    101 01%7C10/15%7C2010/11/01%7C1%3A%7C0%25%7C25%25%7C50%25%7C75%25%7C100%25%7C2%3A%7C0%25%7C25%25%7C50%25
    102 %7C75%25%7C100%25&chxp=0,0,1,2,3,4,5,6,7,8,9,10,11,12&chxtc=0,5&chd=t:98.9,99.3,100.3,100.8,99.7,99.
    103 8,99.8,99.7,99.8,99.9,99.9,99.9,99.9|61.6,63.1,72.7,76.1,78.4,80.9,84.3,86.5,87.9,89.2,90.2,91.1,92.
    104 0|32.0,34.9,45.9,51.0,54.9,58.8,64.0,68.1,70.3,72.1,73.8,75.3,77.0|0.0,0.0,0.8,1.2,1.8,3.3,4.3,11.3,
    105 27.8,32.1,33.4,34.5,36.2&chm=tAndroid%201.5,7caa36,0,0,15,,t::-5|b,c3df9b,0,1,0|tAndroid%201.6,
    106 5b831d,1,0,15,,t::-5|b,aadb5e,1,2,0|tAndroid%202.1,38540b,2,0,15,,t::-5|b,91da1e,2,3,0|tAndroid%202.
    107 2,131d02,3,7,15,,t::-5|B,6fad0c,3,4,0&chg=7,25&chdl=Android%201.5|Android%201.6|Android%202.1|
    108 Android%202.2&chco=add274,94d134,73ad18,507d08" />
    109 
    110 <p><em>Last historical dataset collected during two weeks ending on November 1, 2010</em></p>
    111 
    112 
    113 </div><!-- end dashboard-panel -->
    114 
    115