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Android

Posted by Duarte Reis
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Duarte Reis
Python Web Development Techdegree Student 775 Points

How to assign function to volume up button?

Hi!

I'm trying to develop an app where everytime I press the screen, an action is taken.

Can I also assign this fuction to the volume up button? In other words, can "touch the screen" and pressing volume up button do the same?

I explain why I have this question. I would like to remote control my app using the bluetooth remote control of the new selfie sticks. If I assign that option to the volume button (which is the one that the bluetooth remote deals with) can I create an action using the already built selfy bluetooth remote?

Is this possible for Android and iOS?

Before I start exploring code, I would like to know if it is possible.

I thank you in advance for your time.

Regards,

Duarte

1 Answer

Ben Deitch
STAFF
Ben Deitch
Treehouse Teacher
Ben Deitch
Ben Deitch
Treehouse Teacher

You can override the onKeyDown and onKeyUp methods in your activity and then check for where the key code equals KeyEvent.KEYCODE_VOLUME_UP.

Here's an example:

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN){
            // Do an action
            return true;
        }
        return false;
    }