register listener concode_field_sep FCMListener mFCMListener concode_elem_sep FCMManager instance concode_elem_sep Context mContext concode_elem_sep BroadcastReceiver mMessageReceiver concode_field_sep void init concode_elem_sep void unRegisterListener concode_elem_sep void onMessage concode_elem_sep void subscribeTopic concode_elem_sep FCMManager getInstance concode_elem_sep void unSubscribeTopic concode_elem_sep void onReceive
void function ( FCMListener arg0 ) { this . mFCMListener = arg0 ; }