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Editorial Team
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Asked: 2026-05-30T16:25:18+00:00

What type is BluetoothDevice??? In this code, device works like a string (holding the

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What type is BluetoothDevice???
In this code, device works like a string (holding the UUID of the physical device) when i use it in Log() for LogCat. But I cannot assign it to a string variable (Eclipse complains that it is of type BluetoothDevice).

String action = intent.getAction();
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
Log.v(TAG, "Device="+device); //DISPLAYS "Device=58:17:1C:EB:E3:A8" IN LOGCAT
String d = device; // TYPE MISMATCH!
  • How come a BluetoothDevice object is displayed by its UUID in LogCat, as if it were a string?

EDIT:
The getName() crash was caused by BluetoothDevice returning null first time, because I receive ACTION_DISCOVERY_STARTED from BluetoothAdapter. So that is solved. The mystery of why BluetoothDevice sometimes is a String remains.

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1 Answer

  1. Editorial Team

    The reason it shows in the log is that it implements toString() (more info here) which allows it to be automatically converted to a string for logging.

    If you want the hardware address as a string to use in your logic, you should use device.getAddress instead, which is in a format that is less likely to change.

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