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I am trying to integrate facebook-connect to my android application. All the examples i am seeing over the internet are creating the connection from an Android activity. I am doing something a bit different, the user can configure its connection to facebook from a custom preference. I was successfull when doing it for twitter and foursquare. However, the method Facebook.authorize requires an Activity as parameter, and since i am inside a preference, i am not able to find any reference to an activity object.

So my question here is, how to get a reference for an activity inside a preference?

Thank you all T

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  • Could you post a small amount of code - just enough to illustrate what you have attempted so far? Commented Sep 16, 2011 at 14:26
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    Richard... i manage to fix it. I just applied a cast to the context object (Activity) context and it worked fine. Not sure this is the correct way to achieve this, but as far it works, im fine! Thank you Commented Sep 16, 2011 at 14:54

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I was able to get the Activity reference by casting the Context object to an Activity.

Activity activity = (Activity) context;

or with a custom activtity you can also do this

SettingsActivity activity = (SettingsActivity) context;
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Not always, e.g. see this answer
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It's an old question, though I use following function with the com.android.support:preference preferences fragment:

public static Activity getPrefActivity(Preference pref) { Context c = pref.getContext(); if (c instanceof ContextThemeWrapper) { if (((ContextThemeWrapper) c).getBaseContext() instanceof Activity) return (Activity) ((ContextThemeWrapper) c).getBaseContext(); } else if (c instanceof Activity) return (Activity) c; return null; }
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Assuming you have an activity called MyActivity, can you just use MyActivity.class?

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I tried this... and i am getting an error message like this one: "The method authorize(Activity, String[], int, Facebook.DialogListener) in the type Facebook is not applicable for the arguments (Class<CustomPreferencesActivity>, String[], int, FacebookPreference.FbLoginDialogListener)"... and my call to that method is like this "mFacebook.authorize(CustomPreferencesActivity.class, ApplicationData.FACEBOOK_PERMISSIONS, -1, new FbLoginDialogListener());"

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