Open App from custom keyboard button action

I want to open my application on UIButton action from custom keyboard. Is it possible? Because after reading this

https://developer.apple.com/forums/thread/65621

I am little bit confuse.Please let me know.

Thanks in advance

I am little bit confuse.

Why are you ? Are you trying the same mechanism than the one described in the other post ?

If so, eskimo's answer (yes, 4 years ago) was very clear: not possible. Unless things have changed since, but I did not hear about it.

If not, please tell how you are trying.

Open App from custom keyboard button action
 
 
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