Running test case with multiple devices (Appium + Java)

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1

I’m trying to run a test case with multiple devices. I am attempting to write it using standard Appium + Java approach, but I am constantly running into not finding the Android device. Here is the simplified code I am using:

import java.net.URL;
import java.util.concurrent.TimeUnit;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.openqa.selenium.support.ui.ExpectedConditions;
import io.appium.java_client.android.AndroidDriver;


ProcessBuilder builder = new ProcessBuilder("cmd.exe", "/C", "appium");
logfile = "appiumDevice" + "_" + <deviceName> + ".log";
builder.redirectOutput(new File(logfile));
builder.redirectError(new File(logfile));
Process p = builder.start();
p.waitFor(10, TimeUnit.SECONDS);

DesiredCapabilities capability = new DesiredCapabilities();
capability.setCapability("deviceName", <deviceName>);
capability.setCapability("platformVersion", <OS>);
capability.setCapability("platformName", "Android");
capability.setCapability("udid", <udid>);
File file = new File(<Path>);
capability.setCapability("app", file.getAbsolutePath());
capability.setCapability("noReset", true);
capability.setCapability("launch", true);
capability.setCapability("appPackage", <package>);
capability.setCapability("newCommandTimeout", "60000");
capability.setCapability("appWaitActivity", <activity>);

AndroidDriver driver = new AndroidDriver(new URL("http://0.0.0.0:4723/wd/hub"), capability);

driver.quit();

The error I get is:

org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. Original error: Could not find a connected Android device. (WARNING: The server did not provide any stacktrace information)
2

it is hard to say what is wrong since the error message mentioned that there is no devices. Could you double check on the devices setup?

3

Turns out the issue was due to incorrect path to the ANDROID HOME and missing build-tools (aapt.exe). Changing that fixed the issue, now I can run multiple phones using the same test case!

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