Introduction

The android driver allows us to execute our tests against an Android browser. This can be a simulator or a real device. This recipe will walk us through the steps we have to do to run our tests in a simulator.
Before we can register our simulator we have to download the android SDK (Software Development Kit) from the following location: SDK

Solution

We can divide this section into three parts: setup the emulator, install the WebDriver APK and finally run the test.

Setup the emulator

1) Navigate to the tools directory and create an Android Virtual Device. -n: specifies the name of the AVD -t: specifies the platform target -c: specifies the SD card storage space.
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$cd ~/android_sdk/tools/ 
$./android create avd -n my_android -t 12 -c 100M
2) We can list the targets with the following command to check if the creation succeeded:
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./android list targets
3)Finally we can start the emulator with the following command:
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$./emulator -avd my_android &

Install the WebDriver APK

1) We need to retrieve the serial id with the following command:
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$cd /android_sdk/platform-tools/
adb devices
2) Download the Android server from Selenium website and save it in the platform-tools directory. To install the application enter:
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$./adb -s <serialId> -e install -r android-server.apk
3) Start the Android WebDriver application,by running this command:
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$./adb -s <serialId> shell am start -a android.intent.action.MAIN -n org.openqa.selenium.android.app/.MainActivity
4) Now we need to setup the port forwarding in order to forward traffic from the host machine to the emulator. Enter the following in the terminal :
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$./adb -s <serialId> forward tcp:8080 tcp:8080

Run the test

You will need to take a look in TestNG Framework
Now we have our environment setup we can run our tests. Create new TestNG and paste the code below :
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package com.selenium.test;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.android.AndroidDriver;
import org.testng.annotations.Test;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.AfterTest;

import com.selenium.pageObject.LoginPage;
import com.selenium.userAction.PostStatus;
import com.selenium.userAction.SignIn;

public class autoTestLoadingFacebook {
  
  /**
   * Create WebDriver as static variable
   */
  private static WebDriver driver;
  
  
  /**
 * Setup some variable to run your script test
 */
@BeforeTest
  public void beforeTest() {
    driver =  new AndroidDriver();
  }
  
  /**
 * your test script
 */
@Test
  public void f() {
  driver.get("https://facebook.com");
  //create more test script here
  }
  
  
  /**
 * after run your script test , use this code to close your browser
 */
@AfterTest
  public void afterTest() {
    driver.quit();
  }
}
5) Run your test.