Hi Alex, thanks for the hint. My plan was that the user should pair and connect the keyboard manually in the settings dialog. In the application i only want to know if a keyboard is connected, otherwise I will show an onscreen keyboard.
Thanks Regards Roman > Am 30.10.2018 um 08:24 schrieb Alex Blasche <alexander.blas...@qt.io>: > > As a disclaimer I have not really done any HID work on Android, but based on > the Android docs you need to use the BluetoothHidDevice class to interact > with such keyboards. BluetoothHidDevice.Callback.onConnectionStateChanged is > probably what you need. > > This Android API is not available via Qt APIs. QBluetoothLocalDevice is for > the local Bluetooth device which is not the remote Bluetooth keyboard and HID > connects/disconnects cannot be done programmatically by design. The user has > to make the connection manually. Therefore I am assuming the platform does > not expose such devices via the usual discovery mechanisms either. You have > to write your own Java/JNI code to interact with the class. > > -- > Alex > > ________________________________________ > From: Interest <interest-bounces+alexander.blasche=qt...@qt-project.org> on > behalf of Roman Wüger <roman.wue...@gmx.at> > Sent: Monday, 29 October 2018 11:37:32 PM > To: Qt Project MailingList > Subject: [Interest] Detect connected Bluetooth keyboard under Android > > Hi @all, > > i played with the QBluetoothLocalDevice and QBluetoothDiscoveryAgent to > detected if a Bluetooth keyboard is connected to an android tablet. > > However, I can’t find out the correct way. I tried to read the > majordeviceclass and minordeviceclass but it doesn‘t work, I only get 31,0 > but the documentation says that 5 should be the major device class. The > keyboard works in any input fields, but I can‘t find it. > > I only need a signal if a keyboard connects/disconnects like > hardwareKeyboardConnected(bool) > > What do I need for that? > > Thanks in advance > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
