Question

I need to implement facebook’s share feature into my android app. My scenario is that I have to be able to use the facebook object created in the launch screen among all the other activities. I have already checked into the related questions in SO & found below mentioned links. Now I am guessing, which one of them is the ideal way to implement. Please let me know your views on these methods or If you have your own approach please let me know.

Sharing a global facebook object across Android activities

Facebook android: passing facebook object between activities

Android: Passing a Facebook session across activities

Facebook wall post from multiple Activities
In the answers mentioned above

First Solution deals with creating the facebook object within application context and sharing across the application:

public class GlobalVars extends Application {

public static final String APP_ID = "123456789";    
public Facebook facebook = new Facebook(APP_ID);

}

Second Solution states the use of sharedprefernces. after creating a valid facebook session, it is stored in sharedpreferences and restored back in each activity when required.

SharedPreferences prefs = getApplicationContext().getSharedPreferences("facebook",MODE_PRIVATE);
String access_token = prefs.getString("access_token", null);
long expires = prefs.getLong("access_expires", 0);
if(access_token != null) {
facebook.setAccessToken(access_token);
}
if(expires != 0) {
facebook.setAccessExpires(expires);
}

Third Solution states the use of parcelable implementation.

public void writeToParcel(Parcel out, int flags) {
out.writeInt(mData);

}

Fourth solution is trying to create a class containing static Facebook object and trying to use the same from all activities.

Class Utiltiy {
public static Facebook mFacebook;

public static void initialize() {
   mFacebook = new Facebook(app_id);
}
}

Utility.mFacebook.request(....).

Thanks for going through whole post. Please suggest a suitable approach.

Answer 1

There is one more approach with storing facebook credentials in Android Account Manager.
If user installed facebook app and already logged in you can get his credentials from Account Manager. And this method gives users a central point (Settings -> Accounts) to define its credentials. From there you can customize them or even delete them.