android – getBluetoothService called with no BluetoothManagerCallback

android – getBluetoothService called with no BluetoothManagerCallback

By reading into the Android source code, it seems to be a warning you cannot do anything about. The source code shows that if you call

BluetoothSocket#connect();

Then it will call

BluetoothAdapter.getDefaultAdapter().getBluetoothService(null);

The key here, is the null parameter that it passes in the above line. Due to this, there will be no callback, and then the BluetoothSocket class will throw out a warning.

Since it is only a warning, I do not think you need to do anything about it.

https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/bluetooth/BluetoothSocket.java line 306
https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/bluetooth/BluetoothAdapter.java line 1610

It appears that this gets called when multiple bluetooth sockets are opened at once. I fixed this by ensuring I was only opening 1 socket at a time.

android – getBluetoothService called with no BluetoothManagerCallback

I get this error even after my application has been closed and I cant get rid of it in any possible way. After this start happening I need to hard-reboot my phone because Im not able anymore to even turn ON bluetooth.

Right now (with the same code) it happens only on one of my phones.. maybe its an issues of the drivers.