handleAppStateChange() {
console.log("AppState", AppState.currentState);
if (AppState.currentState == 'active') {
this.getNumberOfUserOnlineOnceAndIncreaseBy1ByTransaction();
} else if (AppState.currentState == 'inactive') {
BackgroundTimer.setTimeout(() => this.decreaseNumberOfUserOnlineByTransaction(), 0);
}
}
global.setTimeout = (fn, ms = 0) => BackgroundTimer.setTimeout(fn, ms);