run but does not work

[fardinfroghi]

i can use this sample code in android studio without any problem
also run in my android phone but does not work , just camera preview and show filters below
but no effect .
android studio 3.6.1
android phone sumsong j5 and hoawei honor

[gaetanozappi]

Hi @fardinfroghi ,
Assuming that it is only a prototype.
It could be more detailed, I did not understand what the problem.

P. S.
I would like to ask you to respect the documentation I wrote with commitment to the issues.