How can you sense when phone button is clicked?

[Kaustubh_Rakhade]

VolumeEvents: Listen to volume change events

1.Introduction Description: With this extension you can listen to volume change events and get volume values of different stream types Latest Version: 1 Released: 2021-03-03T18:30:00Z (UTC) Last Updated: 2021-03-03T18:30:00Z (UTC) 2.Blocks [image] 3.Documentation Volume Changed Event triggered when volume changes [image] previousVolume ~ int currentVolume ~ int Get Max Volume Returns max volume value of given stream type [image] Accepts int Returns : int Get Min Volume …

This extension can detect change in volume settings. So can be used to detect Volume button press.

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Apart from this App Inventor has inbuilt block to detect Back Press button click.