app/src/main/java/jp/osdn/gokigen/thetathoughtshutter/bluetooth/connection/BluetoothDeviceFinder.kt

   1 package jp.osdn.gokigen.thetathoughtshutter.bluetooth.connection
   2
   3 import android.app.Activity
   4 import android.bluetooth.BluetoothAdapter
   5 import android.bluetooth.BluetoothDevice
   6 import android.bluetooth.BluetoothManager
   7 import android.bluetooth.le.BluetoothLeScanner
   8 import android.bluetooth.le.ScanCallback
   9 import android.bluetooth.le.ScanResult
  10 import android.content.Context
  11 import android.util.Log
  12
  13 class BluetoothDeviceFinder(private val context: Activity, private val scanResult: IBluetoothScanResult) : BluetoothAdapter.LeScanCallback, ScanCallback()
  14 {
  15
  16     companion object
  17     {
  18         private val TAG = BluetoothDeviceFinder::class.java.simpleName
  19     }
  20     private lateinit var targetDeviceName: String
  21     private var foundBleDevice = false
  22     private var scanner : BluetoothLeScanner? = null
  23
  24     fun reset()
  25     {
  26         foundBleDevice = false
  27     }
  28
  29     fun stopScan()
  30     {
  31         try
  32         {
  33             Log.v(TAG, " stopScan()")
  34             val btMgr: BluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
  35             btMgr.adapter.cancelDiscovery()
  36             scanner?.flushPendingScanResults(this)
  37             scanner?.stopScan(this)
  38         }
  39         catch (e : Exception)
  40         {
  41             e.printStackTrace()
  42         }
  43     }
  44
  45     fun startScan(targetDeviceName: String)
  46     {
  47         try
  48         {
  49             this.targetDeviceName = targetDeviceName
  50             val btAdapter = BluetoothAdapter.getDefaultAdapter()
  51             if (!btAdapter.isEnabled)
  52             {
  53                 // Bluetoothの設定がOFFだった
  54                 Log.v(TAG, " BLUETOOTH SETTING IS OFF")
  55                 scanResult.notFindBluetoothDevice()
  56                 return
  57             }
  58             // Bluetooth のサービスを取得
  59             val btMgr: BluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
  60             scanBluetoothDevice(btMgr)
  61         }
  62         catch (e: Exception)
  63         {
  64             e.printStackTrace()
  65         }
  66     }
  67
  68     private fun scanBluetoothDevice(btMgr: BluetoothManager)
  69     {
  70         try
  71         {
  72             Log.v(TAG, " scanBluetoothDevice() ")
  73
  74             // スキャン開始
  75             foundBleDevice = false
  76             val adapter = btMgr.adapter
  77             if (adapter.isDiscovering)
  78             {
  79                 adapter.cancelDiscovery()
  80             }
  81             //adapter.startDiscovery()
  82             scanner = adapter.bluetoothLeScanner
  83             scanner?.startScan(this)
  84         }
  85         catch (e: Exception)
  86         {
  87             e.printStackTrace()
  88             Log.v(TAG, "Bluetooth SCAN EXCEPTION...")
  89         }
  90     }
  91
  92     override fun onLeScan(device: BluetoothDevice, rssi: Int, scanRecord: ByteArray?)
  93     {
  94         try
  95         {
  96             Log.v(TAG, " onLeScan() ")
  97
  98             val btDeviceName = device.name
  99             if (btDeviceName != null && btDeviceName.matches(Regex(targetDeviceName)))
 100             {
 101                 // device発見！
 102                 foundBleDevice = true
 103                 scanResult.foundBluetoothDevice(device)
 104             }
 105         }
 106         catch (e: Exception)
 107         {
 108             e.printStackTrace()
 109         }
 110     }
 111
 112     override fun onScanFailed(errorCode: Int)
 113     {
 114         Log.v(TAG, " onScanFailed : $errorCode")
 115     }
 116
 117     override fun onScanResult(callbackType: Int, result: ScanResult?)
 118     {
 119         //super.onScanResult(callbackType, result)
 120         val device = result?.device
 121         Log.v(TAG, " onScanResult($callbackType, ${device?.name}) ")
 122         val findDevice = (device?.name)?.contains(targetDeviceName)
 123         if ((findDevice != null)&&(findDevice))
 124         {
 125             Log.v(TAG, " FIND DEVICE : $targetDeviceName")
 126             scanResult.foundBluetoothDevice(device)
 127             scanner?.stopScan(this)
 128         }
 129     }
 130
 131     override fun onBatchScanResults(results: MutableList<ScanResult>?)
 132     {
 133         //super.onBatchScanResults(results)
 134         Log.v(TAG, " onBatchScanResults ")
 135     }
 136 }