How to preserve Appium session between multiple testng class

Question

I am automating Android application using Appium, I have One Base Class with Setup and Tear down (In setup initialization appium session and in teardown destroying session )

Answer 1

I have implemented this approach using Singlton design pattern here is approach:

public class SingltonFactory{

    private static SingltonFactory instance = new SingltonFactory();
    private static AppiumDriver<MobileElement> driver;

    private SingltonFactory() {
    }

    // Get the only object available
    public static SingltonFactory getInstance() {
        return instance;
    }

    // Get the only object available
    public void setDriver(AppiumDriver<MobileElement> driver1) {
        driver = driver1;
    }

    public AppiumDriver<MobileElement> getAppiumDriver() {
        return driver;
    }   

}

Add initialize SingltonFactory in your before test cases and assign driver object like below:

AppiumFactory appiumFactory = AppiumFactory.getInstance();
if(appiumFactory.getAppiumDriver() == null) {
    driver = new AndroidDriver<MobileElement>(new URL("http://127.0.0.1:4723/wd/hub"), cap);                
}
else{
   driver = appiumFactory.getAppiumDriver();
}

Answer 2

I also have same requirement, its a Gradle project and i use gradle script to execute my testcases, Requirement: Have to preserve or have to retrieve an Appium session (driver) using session ID So that we can avoid re initializing each time between testcases

Environment: Multiple test cases(>50 scenarios) run based on the source tag in sequence. Gradle script include parameters App on android dos`t need a re-initialize each time

What did i try: 1. Tried to Write driver info to a file and retrive each time when i start a new scenario(setSessionID class in private in Appium)

Create Appium(local) class that can use session id + Appium APIs , but that is hectic and will end up maintaining something already is available

   DesiredCapabilities dc = new DesiredCapabilities();
    //migrate to gradle params later after demo
    dc.setCapability("deviceName", "XX30");
    dc.setCapability("udid", System.getProperty("hubUdid"));
    dc.setCapability("appPackage", "com.bbbbb.bbb.bbb.primary");
    dc.setCapability("appActivity", "..Activity");
    dc.setCapability("autoLaunch",false);
    dc.setCapability("dontStopAppOnReset",true);
    dc.setCapability("noReset", "true");
    driver_hub = Android.initialize(new URL("http://127.0.0.1:4723/wd/hub"), dc);

Answer 3

You can achieve the same without inheriting base class.

Step1 -> Initialize driver object in your set up i.e your setup method as driver=new AndroidDriver(url,caps);

Step 2-> If you have any Utility or Constant class, call its constructor and pass driver as a parameter e.g. new Constants(driver);
Note: You can mark driver as a static variable if you only need one driver instance.

Step 3-> Whenever you wish to access driver, access it as Constant.driver or initialize driver object at class level.