How to validate the accuracy of touch actions for scrolling on a mobile device?

Question

My scenario is to scroll to somewhere in the middle of the page, to an element which is dynamic. Now when I use touchAction using :-

TouchAction tc2=touchAction.press(PointOption.point(startX, startY)).waitAction().moveTo(PointOption.point(endX, endY)).release().perform();

The amount of scrolling is inconsistent, sometimes it over scrolls and sometime it underscrolls. Also we do not have a boolean return for touch action to know wheather it has actually worked or not.

Q1.How do we validate wheather or not TouchAction is working correctly or not?

Q2.Which is the best way to implement scroll for mobile devices using appium?

Answer 1

This is good approach I have used. You can do scrolling to look a specific element with UiAutomator2 OR scrolling till the element is visible on page.

Add in desired capability UiAutomator2 if you are using appium as automation engine.

capabilities.setCapability(MobileCapabilityType.AUTOMATION_NAME, "UiAutomator2");

Now use below functions if you have element's id, and index as 0 for there is one element on page.

public void scrollByID(String Id, int index) {

        try {

             driver.findElement(MobileBy.AndroidUIAutomator("new UiScrollable(new UiSelector().scrollable(true).instance(0)).scrollIntoView(new UiSelector().resourceId(\""+Id+"\").instance("+index+"));")); 

        } catch (Exception e) {
           e.printStackTrace();
        }
    }

There is more ways to do scrolling. You can find them here