Appium 滑动问题

/根据方向滑动
 JavascriptExecutor js = (JavascriptExecutor) driver;
 HashMap<String, String> scrollObject = new HashMap<String, String>();
 scrollObject.put("direction", "left");
 scrollObject.put("element", ((RemoteWebElement) element).getId());
 js.executeScript("mobile: scroll", scrollObject);
 //根据坐标滑动
     public void swipe() {

         try {
             Thread.sleep(2000);

         } catch (Exception e) {
             e.printStackTrace();
         }
         JavascriptExecutor js = (JavascriptExecutor) dr;
         HashMap<String, Double> swipeObj = new HashMap<String, Double>();
         swipeObj.put("startX", 420.0);
         swipeObj.put("startY", 400.00);
         swipeObj.put("endX", 30.0);
         swipeObj.put("endY", 400.0);

         swipeObj.put("duration", 0.4);
         // 4个滑动页面
         for (int i = 0; i < 3; i++) {
             try {
                 js.executeScript("mobile: swipe", swipeObj);
             } catch (WebDriverException ex) {
                 ex.printStackTrace();
             }
         }
     }