Hardware button to trigger an app? (video transmission)

[Sirous_Nekooei]

Is there a way to run whatsapp and make a video call upon pressing a hardware button (vol up for example) ?

Sirous

[nishyanthkumar]

Although it doesn't exactly listen to the hardware buttons, you could use this extension:

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 …

You can use the ActivityStarter component to open WhatsApp:

[Sirous_Nekooei]

Thank you, it may help.
But let me describe what is in my mind.
I want to make a video door bell, which operates over cellular network. Wiring is not possible and wireless communication is not possible due to obstacles.
My project consists of a basic Android phone with a 4g sim card installedat the entrance door. When a person presses a button, the phone calls me via whatsapp. At first the speaker is muted so that the client doesn't recognize it is a phone call. If I answer, a video stream is started from the door phone to my phone, and a two way voice communication also started with loudspeakers activated. If I don't answer, the client won't hear anything.

Any suggestion is welcome.

Thanks,
Sirous

[Sirous_Nekooei]

Dear community,
Let me describe what is in my mind.
I want to make a video door bell, which operates over cellular network. Wiring is not possible and wireless communication is not possible due to obstacles.
My project consists of a basic Android phone with a 4g sim card, installed at the entrance door.
When a person presses a button (preferably a hardware button), the phone calls me via whatsapp. At first the speaker is muted so that the client doesn't recognize it is a phone call. If I answer, a video stream is started from the door phone to my phone, and a two way voice communication also started with loudspeakers activated. If I don't answer, the client won't hear anything.

Any suggestion is welcome.

Thanks,
Sirous

[nishyanthkumar]

This seems very complex indeed. I've been musing over this for a while, and I think you'll need something more advanced than just App Inventor.

You might be able to implement this in a different way with Arduino, in conjunction with App Inventor.