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copied!<p><a href="http://developer.android.com/reference/android/content/pm/PackageInfo.html#firstInstallTime" rel="noreferrer">PackageInfo.firstInstallTime</a> gives you the install time in <em>"Unix time"</em> (the time in milliseconds since <em>"the epoch"</em>, i.e. <em>January 1, 1970 00:00:00 UTC</em>). You may use <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Date.html" rel="noreferrer">java.util.Date</a> or <a href="http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html" rel="noreferrer">java.text.DateFormat</a> in order to format this time.</p> <pre><code>private static final String TAG = "MyActivity"; ... packageName = ... ... try { PackageInfo packageInfo = pm.getPackageInfo(packageName, PackageManager.GET_PERMISSIONS); Date installTime = new Date( packageInfo.firstInstallTime ); Log.d(TAG, "Installed: " + installTime.toString()); Date updateTime = new Date( packageInfo.lastUpdateTime ); Log.d(TAG, "Updated: " + updateTime.toString()); } catch ( PackageManager.NameNotFoundException e ) { e.printStackTrace(); } </code></pre> <p>You can also change the date format with <a href="http://docs.oracle.com/javase/6/docs/api/java/text/SimpleDateFormat.html" rel="noreferrer">java.text.SimpleDateFormat</a>. </p> <pre><code>SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String installTime = dateFormat.format( new Date( packageInfo.firstInstallTime ) ); Log.d(TAG, "Installed: " + installTime); String updateTime = dateFormat.format( new Date( packageInfo.lastUpdateTime ) ); Log.d(TAG, "Updated: " + updateTime); </code></pre>

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