How can I see connected readers using the Android SDK?

[TylerParticipant]

When the Bluetooth reader (Floble Plus) connects I receive the reader in a message as a FMBluetoothDevice. This works perfectly, but when I navigate away and I come back to the activity the reader is obviously gone as a variable. I can store it in my own data structure if I have to, but I was curious if there is a way to view connected devices using the SDK.

[TylerParticipant]

It seems if I keep the reader stored and recreate the activity and the scan event is fired, but when I call GetNDEF I just get an exception. Is it due to the activity being a new instance?

I boostrap a FMSessionManager in the ONCreate of the Activity.

BlueToothReaderSessionHandler.Context = this;
BlueToothReaderSessionHandler.Delegate(delegateHandler);
BlueToothReaderSessionHandler.Start();

FYI, I ported the SDK to Xamarin so some of the naming conventions have changed.

[DarienMember]

Hello:

The SessionManager class is a Singleton. It holds the created Devices.
So you should use:
SessionManager.getInstance().getDevices()

[TylerParticipant]

Darien, I don’t have a getDevices and I’m running on v2.2 All I see related is mDeviceAddress and mDeviceName which are always null.

[DarienMember]

hi Tyler:

In order to support you can you show me the code?? If you need personal support we can set a brief call using skype or zoom…

Thanks

[TylerParticipant]

Sure, Darien. Thanks!

Here’s the snippet of code. https://pastebin.com/SiCKyY6c

Please keep in mind that this is Xamarin so the code will look slightly different.

Here’s the contract for FMSessionManager.

View post on imgur.com

[TylerParticipant]

My issue is the second time I come to an activity, the FMBluetoothDevice is already connected and I have no way to access it. When an NFC tag is scanned, I get the SDKdidFindUUID event, but I no longer have access to the FMBluetoothDevice . If I attempt to store the FMBluetoothDevice in a static variable, it doesn’t work I assume because the new instance of the activity.

[RichardKeymaster]

Hi Tyler, we’re working on your support request. Seems your issue is resolved by a new release we’ve been working on so we’re trying to get that to you. Our release process on Android isn’t as mature and automated as on iOS so this has been the challenge. Darien is working on it though and we will get back to you as soon as it’s ready.

Apologies for the delay.
Richard

[Author]

Posts