Getting web driver exception message while tapping list elements using appium

Question

I am using appium 1.4.8 on mac and I'm automating native app using selenium. I am stuck in a situation where I need to tap each element in a list. I wrote below code:

List allKeywords=driver.findElements(By.xpath("//UIAApplication[1]/UIAWindow[2]/UIATableView[]/"));
System.out.println("TEST TAPS ON THE EVENT SENT BY EXCEL SUCCESSFULLY "+allKeywords.size());

for(int j=0; j<=allKeywords.size(); j++){

    try{
        Thread.sleep(4000);
        allKeywords.get(j).click();

        System.out.println("TEST TAPS ON THE EACH KEYWORDS ");      
        }

    catch(WebDriverException e ){
        e.printStackTrace();
        captureScreenshot(driver, "tagsTappingImg");    

        }

}   

But I am getting an error message :

org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 772 milliseconds.

This error is shown when control tries to tap on next to the first element.

Answer 1

You need to cast the list element in Web Element. As below.

List<WebElement>allKeywords=driver.findElements(By.xpath("//UIAApplication[1]/UIAWindow[2]/UIATableView[]/"));