Facebook SDK for Android - set Application ID programmatically

Question

I have a native Android app that needs to connect to a different Facebook app (different Application ID) based on an app setting that can be changed at runtime.

Ima

Answer 1

I think there is a simpler way to do this, just call the static method setApplicationId com.facebook.Settings.setApplicationId(facebookID);

And you're good to go. No need to create a session manually with the Builder and set it as the active session!

Details of the Flaw:

The facebookID you set in the settings class will be used by getMetadataApplicationId method of com.facebook.internal.Utility

public static String getMetadataApplicationId(Context context) {
        Validate.notNull(context, "context");

        Settings.loadDefaultsFromMetadata(context);

        return Settings.getApplicationId();
    }

Which in turn will be used by all the calls to create a Session:

Session(Context context, String applicationId, TokenCachingStrategy tokenCachingStrategy,
            boolean loadTokenFromCache) {
        // if the application ID passed in is null, try to get it from the
        // meta-data in the manifest.
        if ((context != null) && (applicationId == null)) {
            applicationId = Utility.getMetadataApplicationId(context);
        }

        Validate.notNull(applicationId, "applicationId");
.
.
.
}

Cheers.