Please how can I solve this error message displaying on my app if not connected to Bluetooth device.
Showing error 515: not connected to Bluetooth device
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Is your App intended to connect to a device via Bluetooth? If so, then you need that message.
It is possible to 'capture' an error message and deal with it in your code - perhaps try to re-connect:
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You should not send BlueTooth text if not connected:
Here's one way, replacing all BT Sends with calls to a common procedure that tests connectivity before sending.
I replaced one.
I leave it to you to replace the rest.
draggable blocks:
A fancier way would be to use one of your clock timers to test connectivity and run through a list of your special button components, enabling them and disabling them depending on BT connected.
(Thank you, @Taifun)This will not help very much, because once property IsConnected is true it will stay like that
as the bluetooth protocol was designed, there is no way to detect, if a connection still is alive, therefore you have to send regularly (i.e. poll) some data to the device. And if you get an error, then you know, that the connection was lost...
See also
Taifun
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