SpeechRecognizer : not connected to recognition service

I found the reason to the problem. In onPause method though SpeechRecognition.destroy() method is called, I guess it just detaches the service but the object sr will be pointing to some instance and it wont be null. Resetting the object sr to null would solve the problem.

Not destroying the SpeechRecognition object in onPause method would block other apps from using SpeechRecognition service

@Override
protected void onPause() {

    Log.i(CLASS_TAG, "on pause called");
    if(sr!=null){
        sr.stopListening();
        sr.cancel();
        sr.destroy();              

    }
    sr = null;

    super.onPause();
}

Just stop calling stopListening() and cancel() methods. Instead call destroy() methods only. this should fix the problem :)