My new project will not run on android emulator, the emulator only runs HelloWorld. Solving

My new project will not run on android emulator, the emulator only runs HelloWorld. I beg the god advice. Thank you, ah

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Reply:
That's good contradiction, since helloworld are out, how can you say no to run it.
Reply:
Helloworld is an example of this, I can not run to build their own projects
Reply:
Your example inside and what?
Reply:
Show that you run is that project helloworld
Reply:
Or bar code stickers
Reply:
The error log posted ah, otherwise who knows tells where they went
Reply:
Oh, sorry, I have found a mistake, trouble you