我在藍(lán)牙 RN 應(yīng)用程序中運行一些異步代碼時遇到問題。我正在嘗試創(chuàng)建一個執(zhí)行以下操作的偵聽器函數(shù)：連接到設(shè)備（使用異步函數(shù)），記錄我已連接，然后斷開與設(shè)備的連接（使用異步函數(shù)）。此偵聽器功能作為藍(lán)牙低功耗 (ble) 設(shè)備掃描功能的參數(shù)提供：// Relevant Function Prototypes --------------------------------------------------// startDeviceScan() -> This scans for devices and runs a listener function on each//                      device it scans. bleManager.startDeviceScan(  UUIDs: ?Array<UUID>,  options: ?ScanOptions,  listener: (error: ?Error, scannedDevice: ?Device) => void // <- this listener function)// connectToDevice() -> This connects to a device scanned by the bleManager in the //                      listener function given to startDeviceScan()bleManager.connectToDevice(  deviceIdentifier: DeviceId,  options: ?ConnectionOptions,): Promise<Device>// My code ------------------------------------------------------------------------// Scans nearby ble devices advertising and runs a listener function that has the //  connection error status and device id as given parameters.// **This function triggers on a Button onPress const handleStartScanning = async () => {        try {            bleManager.startDeviceScan(                ['00001200-0000-1000-8000-00805f9b34fb'], // the service UUID I am scanning for                { allowDuplicates: true }, // I allow to duplicates to continuously reconnect to devices                async (error, device) => {                    // get services                    let services = device.serviceUUIDs // get list of the service UUIDs on device                    // make sure services not null and out service UUID is included                    if (services && services.includes('00001200-0000-1000-8000-00805f9b34fb')) {                    }                }            )        } 我不明白為什么即使我使偵聽器函數(shù)異步并等待偵聽器中的 2 個異步函數(shù)調(diào)用，日志Connected to Device也不會打印。await bleManager.connectToDevice(device.id)這意味著偵聽器永遠(yuǎn)不會在異步函數(shù)調(diào)用之后執(zhí)行