@Alex: i tried your suggestion but the problem is that the BluetoothHIDDevice class was introduced in API level 28, but I need Level 24.
Maybe this can be done differently with Java? Regards Roman > Am 01.11.2018 um 19:07 schrieb Jérôme Godbout <godbo...@amotus.ca>: > > There is no way yet to achieve that, at least that I know of, the only thing > you can do is monitor the space and dimension to see if the virtual keyboard > is displayed. The Android OS will display the soft keyboard or not on his > own. You can only try to monitor to see if any changes on size have occurred > and you can assume it's for a keyboard. More info can be found over here: > https://stackoverflow.com/questions/2150078/how-to-check-visibility-of-software-keyboard-in-android > https://groups.google.com/forum/#!topic/android-platform/FyjybyM0wGA > > It's really sad this cannot be easily monitored. > > -----Original Message----- > From: Interest <interest-bounces+godboutj=amotus...@qt-project.org> On Behalf > Of Roman Wüger > Sent: November 1, 2018 5:58 AM > To: Alex Blasche <alexander.blas...@qt.io> > Cc: Qt Project MailingList <interest@qt-project.org> > Subject: Re: [Interest] Detect connected Bluetooth keyboard under Android > > 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 _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
