问是否有办法避免多次触发nativescript活动生命周期事件

EN

this.launchListenerCB = (args) => {
            console.log(">>>>>>> resumeEvent Event");
            if (args.android) {
                // For Android applications, args.android is an android.content.Intent class.
                console.log("resumeEvent Android application with the following intent: " + args.android + ".");
            }
        };

        appOn(resumeEvent, this.launchListenerCB);

this.exitListenerCB = (eventData: any) => {

            this.unsubscribeAll();
        }
        appOn(exitEvent, this.exitListenerCB);



private unsubscribeAll(): void {
        // console.log("unsubscribeAll launchListenerCB:", !!launchListenerCB)

        appOff(resumeEvent, this.launchListenerCB); // HERE
        // appOff(suspendEvent, this.suspendListenerCB);
        // appOff(resumeEvent, this.resumeListenerCB);
        // appOff(lowMemoryEvent, this.lowMemoryListenerCB);
        // appOff(exitEvent, this.exitListenerCB);
    }