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POFacebook Android SDK - When using UiLifecycleHelper, should I use Activity or Application for context?
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copied!<p>Hi I am currently using Facebook SDK 3.0 for Android. Here are some facts first.</p> <ul> <li><p>Instead of putting my app_id in AndroidManifest.xml, I set that value in my java code programmatically. Hence I use something like the following helper methods when dealing with session.</p> <pre><code>if (session == null || session.isClosed()) { String applicationId = Persistent.getString(null, SocialUtil.FACEBOOK_APP_ID); session = new Session.Builder(Utils.ctx).setApplicationId(applicationId).build(); Session.setActiveSession(session); } </code></pre></li> <li><p>Once the user logs in with facebook, the session is used in many activities and that's why I provided application context for session. </p></li> </ul> <p>As you see for the context of session, I provide Utils.ctx which is an Application Object. Since Facebook SDK's native UiLifecycleHelper creates sesssion with Activity when session doesn't exist, I created my own FBIUiLifecycleHelper by coping the original UiLifeCycleHelper and just switching</p> <pre><code> session = new Session(activity); </code></pre> <p>to </p> <pre><code> String applicationId = Persistent.getString(null, SocialUtil.FACEBOOK_APP_ID); session = new Session.Builder(Utils.ctx).setApplicationId(applicationId).build(); </code></pre> <p>.</p> <p>However, it seems like whenever Session state changes in my activity, the callback function is NOT called at all. I think it is because I used application context instead of activity context when dealing with session.</p> <p>MY QUESTION IS, 1. how is it different when you provide application context or activity context for session's context? 2. Which one is a recommened practice when? why? 3. Let's say a user login created a session with activity context. Once this session is set to by setActiveSession(), can this session be used in other activites by calling getActiveSession()? Maybe I don't really have to use application context for session context?</p> <p>Thanks!</p>

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