Bryce-Terminal | Stripe Developers | Page 1

full sorrel Dec 16, 2021, 2:28 AM

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Hello, are you saying that after clearCachedCredentials() you can not create another ConnectionToken?

flat ocean Dec 16, 2021, 2:35 AM

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Sorta, if I call clearCachedCredentials nothing seems to happen. Terminal instance is still connected so even if I send it a new connection token it crashes

The main reason I am going down this route when closing the payment screen and starting a new one, once the SDK reader hits Bluetooth connection stage it stops sending information to the ViewModel that the Fragments share with the activity

full sorrel Dec 16, 2021, 2:42 AM

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It sounds odd to me that you need to recreate ConnectionToken every time your customer reopen a page. Could you elaborate more on your current implementation?

flat ocean Dec 16, 2021, 2:49 AM

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I shouldn't need too - and I don't want to try every-time. I am trying to troubleshoot an existing problem which could be persistence memory somewhere. Was trying to use a process of elimination

The current implementation:
PaymentActivity runs two fragments. First is Keypad fragment and then a start payment fragment.

The fragments get information via same ViewModel using by activityViewModels() and LiveData

First time you open Payment Activity it runs the cardreader code. Starts Terminal - finds reader - connects etc.. and runs perfectly

When everything finishes and you leave Payment Activity (so it calls finish()) and you enter the Payment Activity again.
The card reader stops sending information to the ViewModels once it enters the DiscoveryConfiguration of the SDK.

It's as if it's pointing bluetooth calls somewhere else at that point. Hence why I was trying to see if resetting Terminal.getInstance would resolve or give me some understanding on why

The same viewmodel problem occurs if I connect Terminal.getInstance else where in the app (using applicationContext), it's once it reloads on the page DiscoveryConfigu onwards can't seem to talk to ViewModels

strange surge Dec 16, 2021, 4:05 AM

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Hi @flat ocean can you provide more insights on what problem you want to resolve? So that we can discuss and see if clearCachedCredentials() is really the solution.

flat ocean Dec 16, 2021, 4:43 AM

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I'll try to gather more information later to give a better overview of the situation

It seems that certain SDK methods stop communicating with ViewModels/LiveData after a disconnected and then reconnect is called to the Card Reader. Some of them however work fine

strange surge Dec 16, 2021, 5:03 AM

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How do you use the SDK with your view model? Can you share the code here?

#Bryce-Terminal