[Noviv]

You will just need to set the value of the pneumatic to one position while the button is being pressed, and the other when it is not.

Psuedocode:

if (A button is pressed) {
    pneumatic.set(on);
} else {
    pneumatic.set(off);
}

Java Single Solenoid:

Solenoid solenoid = new Solenoid(port);
if (operator.getRawButton(1)) {//example
    solenoid.set(true);
} else {
    solenoid.set(false);
}

Java Single Solenoid:

DoubleSolenoid solenoid = new DoubleSolenoid(portA, portB);
if (operator.getRawButton(1)) {
    solenoid.set(DoubleSolenoid.Value.kForward);
} else {
    solenoid.set(DoubleSolenoid.Value.kReverse);
}

getRawButton(1) should be mapped to the A button on Xbox controllers. Switch it to getRawButton(2) for Logitech controllers.