scan device

scanDevice.kt

        val callback = object : ScanCallback() {
            override fun onScanResult(callbackType: Int, result: ScanResult?) {
                super.onScanResult(callbackType, result)
                result?.device?.connectGatt(context, false, gattCallBack)
            }
        }

        adapter = BluetoothAdapter.getDefaultAdapter()
        val builder = ScanFilter.Builder()
        builder.setServiceUuid(ParcelUuid(SERVICE_UUID))
        val filter = builder.build()
        val filters = listOf(filter)
        val settings = ScanSettings.Builder().setScanMode(ScanSettings.SCAN_MODE_LOW_POWER).build()
        adapter.bluetoothLeScanner.startScan(filters, settings, callback)