Scroll issue android

BaseSetup.java

package com.sandbox.setup;

import io.appium.java_client.AppiumDriver;
import io.appium.java_client.android.AndroidDriver;
import io.appium.java_client.android.AndroidElement;

import java.net.URL;
import java.util.concurrent.TimeUnit;

import org.testng.annotations.AfterClass;
import org.testng.annotations.AfterClass;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Parameters;
import org.openqa.selenium.Dimension;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.remote.DesiredCapabilities;

public class BasicSetup {

	protected static AppiumDriver driver;
	
 @BeforeTest
  public void setUp() throws Exception {

      DesiredCapabilities capabilities = new DesiredCapabilities();

		capabilities.setCapability("appium-version", "1.2.7");
		capabilities.setCapability("platformName", "Android");
		capabilities.setCapability("platformVersion", "5");
		capabilities.setCapability("appActivity" , "ui.ActSplashScreen");
		capabilities.setCapability("appPackage", "com.ipay.mobile");
		capabilities.setCapability("deviceName", "Micromax E485");
		capabilities.setCapability("appwaitDuration", "30000");
		capabilities.setCapability("automationName", "Appium");
		capabilities.setCapability("unicodeKeyboard", true);
		capabilities.setCapability("resetKeyboard", true);
		
		capabilities.setCapability("app", "C:\\Users\\Sandarekha\\Documents\\app-debug.apk\\app-debug.apk");
					     
		driver = new AppiumDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
		driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
  }
 
	 @AfterTest
	   public void tearDown() throws Exception {
	       //driver.quit();
	   }	
}