android - 在蓝牙关闭的情况下识别 Android / Kotlin 上的 BLE 设备

问题描述

我正在开发一种检查 BLE 设备的解决方案，并使用 Android 附带的本机 API 来检查 BluetoothLeScanner。

想了解更好的操作，我拿了位置许可和蓝牙。

扫描开始后，我将手机上的蓝牙关闭，Moto G2 Android 6.0当我在 a 上测试时，扫描仍然给我预期的结果，Samsung S8 Android 9并且Sony Xperia T2 Ultra Android 5.1在我得到的日志中，蓝牙被禁用并且扫描已停止。

我只能在购买时进行测试，如下所示

 bluetoothManager = getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
 bluetoothAdapter = bluetoothManager.adapter

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            bluetoothScanner = bluetoothAdapter.bluetoothLeScanner
        }

@TargetApi(Build.VERSION_CODES.M)
    class BleScanCallback(resultMap: MutableMap) : ScanCallback() {

    var resultOfScan = resultMap

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    @TargetApi(Build.VERSION_CODES.M)
    override fun onScanResult(callbackType: Int, result: ScanResult?) {
        addScanResult(result)
        Log.v("Main Activity", "I found a ble device ${result}")
        Log.v("Main Activity", "I found a ble device ${result?.device?.address}")

    }

    override fun onBatchScanResults(results: MutableList<ScanResult>?) {
        results?.forEach { result -> addScanResult(result) }
    }

    override fun onScanFailed(errorCode: Int) {
        Log.v("Main Activity","Bluetooth LE scan failed. Error code: $errorCode")
    }

    fun addScanResult(scanResult: ScanResult?) {
        val bleDevice = scanResult?.device
        val deviceAddress = bleDevice?.address
        resultOfScan.put(deviceAddress, bleDevice)
    }

当蓝牙在线时，scanResult会带来必要的信息，我已经将其设置为下图

https://i.stack.imgur.com/o9jGRm.png

我看到这使扫描变得更糟

标签： androidkotlinbluetooth-lowenergybeacon

android - 在蓝牙关闭的情况下识别 Android / Kotlin 上的 BLE 设备

问题描述

解决方案

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