simulator wont work

HI Developers, I can't get my simulator to work on my phone or a virtuel phone, the code should work, because there isn't any errors and its says the code is succesfull, is it only me there has the problem?

i am going to link a GitHub link to the code

[linkText https://github.com/hyperoslo/BarcodeScanner.git

simulator wont work
 
 
Q