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btArrayAdapter现在包含所有配对的蓝牙设备。稍后我想检查这些设备是否还活着。如果没有,它应该向我显示该设备名称。

ArrayAdapter<String> btArrayAdapter = new ArrayAdapter<String>(
         this, android.R.layout.simple_list_item_1);
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices(); 
if (pairedDevices.size() > 0) { 
   for (BluetoothDevice device : pairedDevices) {
      String deviceBTName = device.getName();
      String deviceBTMajorClass = device.getAddress();
      btArrayAdapter.add(deviceBTName + "\n" + deviceBTMajorClass);
   } 
}
setListAdapter(btArrayAdapter);

如何检查它?谢谢

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