How to get exactly "Unknown Sources" application list on Android?
<p>How to get exactly "Unknown Sources" <strong>application list</strong> on Android?
what is flag to used? If it is not this method,what are others method? and 
How to programmically?</p>

<pre><code>    PackageManager pm = this.getPackageManager();
    final List&lt;PackageInfo&gt; appinstalled = pm
            .getInstalledPackages(what is flag??); //
</code></pre>

<p>Sorry for my bad English.
Thank you.</p>
