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Home/ Questions/Q 4259694
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Editorial Team
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Editorial Team
Asked: May 21, 20262026-05-21T05:49:10+00:00 2026-05-21T05:49:10+00:00

I’ve got an app inventor app built and working pretty well in the emulator.

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I’ve got an app inventor app built and working pretty well in the emulator. When I put it on my phone none of the code runs. The app doesn’t crash, but the code behind the objects doesn’t do anything. I’ve got code which runs on screen load which doesn’t fire, and my buttons don’t do anything.

The drop downs show the menu item, but that’s it.

Does anyone have any ideas?

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  1. Editorial Team
    Editorial Team
    2026-05-21T05:49:11+00:00Added an answer on May 21, 2026 at 5:49 am

    Have you connected the phone with the Block Editor Open? Can u see live preview of the app being developed?

    You need to install a small application “AppInventorPhoneApp” to the phone in-order to accomplishing this… Usually this will be installed when you connect the phone first time with your BlocksEditor…

    Just connect the phone to the Blocks Editor. Blocks editor will automatically install this application. Then you can see the preview in Phone.

    Click Download apk from app inventor. Then Click, Package for Phone—>Download To Connected Phone.

    I hope this solves your issue.

    Check if unknown Sources and Development options are turned on in the Application settings…. For an application to run without these, you have to sign it. (I am not sure about this)..

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