无法在Android 4.2.2上使用Selendroid驱动程序单击图像

Question

我正在浏览网址：

http://serve.qa.vdopia.com/adserver/html5/inwapads/?sleepAfter=0;adFormat=banner;ak=e833a81e238ce8dc876a5f0a283953c2;version=1.0;cb=[timestamp];output=html. 

我正在尝试点击xpath=//a/img[1]所在的图片，但我无法点击它，但我能够成功找到它。到目前为止，我已尝试过这些选项，但它们都没有成功。任何帮助将不胜感激。

//#1.
    WebElement bannerImage = driver.findElement(By.xpath("//a/img[1]"));
    bannerImage.click();

//#2.       
    WebElement bannerImage = driver.findElement(By.xpath("//a/img[1]"));
    TouchActions flick = new TouchActions(driver).flick(bannerImage, -100, 0, 0);
    flick.perform();

//#3.
    String xpath = "//a/img[1]";
    String js = "var targetElement = document.evaluate(\""+xpath+"\",document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null ).singleNodeValue;"
        +"var evt = document.createEvent('UIEvent');"
        +"evt.initUIEvent('touchstart', true, true);"
        +"targetElement.dispatchEvent(evt);";
    ((JavascriptExecutor)driver).executeScript(js);