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public override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_main)
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val bluetoothLeScanner = (getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager).adapter.bluetoothLeScanner
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val rssi_msg = findViewById<View>(R.id.textView1) as TextView
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val rssi_list = findViewById<View>(R.id.textView2) as TextView
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val scroll = findViewById<View>(R.id.TimelineScrollbar) as ScrollView
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val BuStart = findViewById<View>(R.id.button_start) as Button
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val BuStop = findViewById<View>(R.id.button_stop) as Button
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val settings = ScanSettings.Builder()
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.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
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.build()
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val filters = mutableListOf<ScanFilter>() // Leere Liste von Filtern sieht alle devices
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//filters.add(ScanFilter.Builder().setDeviceName("AirTag").build())
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filters.add(ScanFilter.Builder().setDeviceAddress("D6:49:48:05:D3:51").build())
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// Replace MAC Address with your own value or rem the above line out to see all Beacon
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val scanCallback = object : ScanCallback() {
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override fun onScanResult(callbackType: Int, result: ScanResult) {
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//Toast.makeText(getApplicationContext(), " Callback triggered ", Toast.LENGTH_SHORT).show()
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//rssi_msg.text = "Callback Triggered"
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//if (result.device.name != null && result.device.name == "AirTag") {
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//if (result.device.name != null) {
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//val name = result.device.name //"" //result.device.name
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val deviceAddress = result.device.address
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val rssi = result.rssi
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// Hier können Sie den RSSI-Wert des AirTag-Beacons verwenden
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Log.d("RSSI", "Device: $deviceAddress" + " " + "RSSI: $rssi")
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rssi_list.text = rssi_list.text.toString() + deviceAddress + " => " + rssi + "dBm\n"
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scroll.fullScroll(View.FOCUS_DOWN)
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rssi_msg.text = String.format("%02d dBm", rssi)
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//}
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}
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}
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BuStart.setOnClickListener {
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if (ActivityCompat.checkSelfPermission(
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this,
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Manifest.permission.BLUETOOTH_SCAN
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) != PackageManager.PERMISSION_GRANTED
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) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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Toast.makeText(getApplicationContext(), " No Scan Permission ", Toast.LENGTH_SHORT)
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.show()
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rssi_list.text = " No Scan Permission \n"
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return@setOnClickListener
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} else {
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// Hier wird der Scanner gestartet
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//bluetoothLeScanner?.startScan(filters, settings, scanCallback)
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bluetoothLeScanner?.startScan(filters, settings, scanCallback)
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Toast.makeText(getApplicationContext(), " Scanner Started ", Toast.LENGTH_SHORT)
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.show()
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rssi_list.text = " Scanner Started \n"
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}
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}
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BuStop.setOnClickListener {
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// Hier wird der Scanner gestopped
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bluetoothLeScanner?.stopScan(scanCallback)
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Toast.makeText(getApplicationContext(), " Scanner Stopped ", Toast.LENGTH_SHORT)
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.show()
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rssi_list.text = rssi_list.text.toString() + " Scanner Stopped \n"
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scroll.fullScroll(View.FOCUS_DOWN)
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// Hier wird die Liste respeichert (for API 34 ext7 only)
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// Zu finden unter : /storage/emulated/0/Documents/YourCustomDirectory/RSSIwerte.txt
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val content = rssi_list.text as String
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val fileName = "RSSIwerte.txt"
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saveStringToMediaStore(this, fileName, content)
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}
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}
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// allgemeine File-Speicherfunktion (for API 34 ext7 only)
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// Files werden in : Documents/BeaconTest/ abgelegt
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fun saveStringToMediaStore(context: Context, fileName: String, content: String) {
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val values = ContentValues().apply {
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put(MediaStore.MediaColumns.DISPLAY_NAME, fileName)
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put(MediaStore.MediaColumns.MIME_TYPE, "text/plain")
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put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_DOCUMENTS + "/BeaconTest")
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}
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val uri = context.contentResolver.insert(MediaStore.Files.getContentUri("external"), values)
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uri?.let { outputStream ->
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context.contentResolver.openOutputStream(outputStream).use { it?.write(content.toByteArray()) }
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}
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}
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@SuppressLint("MissingPermission")
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override fun onDestroy() {
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super.onDestroy()
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//bluetoothLeScanner?.stopScan(scanCallback)
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}
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