Hello everybody, im new in App inventor  and sorry about my english.
and this my question :
How to exit (close) app when device disconnected from internet (turn off wifi/4g)?
Thank you very much.
Your app will need an "internet checker". You can do this with some blocks or with an extension.
Once you have this setup it is simply a case of closing the app when there is no internet connection.
              
              
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            Major drawback of both methods is that you will have to continuously check for internet connection.
Here the following extension does not need that:
Note: it may not work on Android Q and above.
              
              
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            Thank you very much.
I use webviewer and i dont want show my web url when device disconnected, and this my block
              
              
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