Button Mappings

The Almer Arc has 4 buttons. A power button located on the left side of the device and three action buttons located on the right side of the device. From a mobile application perspective the physical buttons are mapped to the Android KeyEvent keycodes like so:

• Front button → KeyEvent.KEYCODE_DPAD_LEFT
• Middle button → KeyEvent.KEYCODE_BUTTON_SELECT
• Back button → KeyEvent.KEYCODE_DPAD_RIGHT
• Power button → KeyEvent.KEYCODE_POWER

Example

Here is a simple example to get you started:

java

public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (event.getKeyCode() == KeyEvent.KEYCODE_BUTTON_SELECT) {
        // do what you want with the button
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

kotlin

override fun onKeyDown(keyCode: Int, event: KeyEvent): Boolean {
    if (event.keyCode == KeyEvent.KEYCODE_BUTTON_SELECT) {
        // do what you want with the button
        return true
    }
    return super.onKeyDown(keyCode, event)
}