gestures1.java

MobileElement slider = driver.findElementByAccessibilityId("slider");

Point source = slider.getLocation();
PointerInput finger = new PointerInput(PointerInput.Kind.TOUCH, "finger");
Sequence sequence = new Sequence(finger, 1);
sequence.addAction(finger.createPointerMove(ofMillis(0),
                PointerInput.Origin.viewport(), source.x, source.y));
        sequence.addAction(finger.createPointerDown(PointerInput.MouseButton.MIDDLE.asArg()));
sequence.addAction(new Pause(finger, ofMillis(600)));
sequence.addAction(finger.createPointerMove(ofMillis(600),
                PointerInput.Origin.viewport(), source.x + 400, source.y));
        sequence.addAction(finger.createPointerUp(PointerInput.MouseButton.MIDDLE.asArg()));

driver.perform(singletonList(sequence));