FacebookSdk not initialized

[mahmoud-elnaggar]

Some users using my App are getting this exception

Fatal Exception: java.lang.RuntimeException Unable to resume activity {com.taskspotting/com.facebook.FacebookActivity}: The SDK has not been initialized, make sure to call FacebookSdk.sdkInitialize() first

do I have to write something like this to resolve this issue if (!FacebookSdk.isInitialized()) SimpleFacebook.initialize(this); or you already initialize Facebook SDK as I think you do for sure I Configure SimpleFacebook SDK on Application's class onCreate function and it works very well with me but I don't know what throw this exception with these users