title: How may I set my app as preferred app in the app, not in the application manager?
body: <p>I am creating an image viewer, and I want add an entry to "Hey my dear user, please set this app as your default image viewer" in my app.</p>
  
  <p>So, I need my app has <code>SET_PREFERRED_APPLICATIONS</code> permission granted. But sadly, as the <a href="http://developer.android.com/reference/android/Manifest.permission.html#SET_PREFERRED_APPLICATIONS" rel="nofollow">doc</a> said, this field is deprecated and no longer useful, not effective at all when I add <code>&lt;user-permission android:name="android.permission.SET_PERFERRED_APPLICATIONS" /&gt;</code> to the <code>AndroidMenifest.xml</code>.</p>
  
  <p>But the doc doesn't point out the alternative. Could anybody tell me how may I make that? TIA.</p>