Appium: Same code is working Sometimes and failing Sometimes

Question

I'm using the following code to run a simple test. The same code is working sometimes and returning error sometimes. The error it will return is "Not able to find UI Element".

This is my code:

package example;
import io.appium.java_client.android.AndroidDriver;
import io.appium.java_client.AppiumDriver;

import org.openqa.selenium.By;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import java.io.File;
import java.net.URL;

public class CalculatorTest {
AppiumDriver<WebElement> driver;

@BeforeClass
public void setUp() throws Exception {

    DesiredCapabilities capabilities = new DesiredCapabilities();
    capabilities.setCapability("deviceName","Android");
    capabilities.setCapability("platformVersion", "6.0");
    capabilities.setCapability("app", "C:/Users/rraghunath/Downloads/Apk/Calculator_com.google.android.calculator.apk");
    capabilities.setCapability("appPackage", "com.google.android.calculator");
    capabilities.setCapability("appActivity", "com.android.calculator2.CalculatorGoogle");

    driver = new AndroidDriver<WebElement>(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
}

@AfterClass
public void tearDown() throws Exception {
    driver.quit();
}

/**
* Test for Calculator
*/
@Test
public void test_CalculatorTest(){

   driver.findElement(By.id("digit_1")).click();
   driver.findElement(By.id("digit_0")).click();
   driver.findElement(By.id("digit_1")).click();
   driver.findElement(By.id("del")).click();
   driver.findElement(By.id("del")).click();
   driver.findElement(By.id("del")).click();
   driver.findElement(By.id("digit_1")).click();
   driver.findElement(By.id("dec_point")).click();
   driver.findElement(By.id("digit_0")).click();
   driver.findElement(By.id("digit_2")).click();
   driver.findElement(By.id("digit_3")).click();
   driver.findElement(By.id("op_mul")).click();
   driver.findElement(By.id("digit_3")).click();
   driver.findElement(By.id("dec_point")).click();
   driver.findElement(By.id("digit_0")).click();
   driver.findElement(By.id("digit_1")).click();
   driver.findElement(By.id("digit_2")).click();
   driver.findElement(By.id("eq")).click();

}

}

Answer 1

You need to wait for the elements to be visible or clickable before clicking on them. It is possible that the application is sometimes a bit slower with drawing and that the element is just not there yet when it tries to click.

WebDriverWait wait = new WebDriverWait(driver, 30);
wait.until(ExpectedConditions.elementToBeClickable(By.id("digit_1"));
driver.findElement(By.id("digit_1")).click();

This will wait for 30 seconds until the digit_1 element is clickable. Often waiting for the first element on the page is enough, for each transition to a new page use a new wait.

Code sample from: https://stackoverflow.com/questions/28799420/how-to-wait-to-activity-using-appium-on-begin-and-during-test-itself

Answer 2

Agree - wait should be introduce before any action. Best practices will be to use implicit wait

• Each time it wont happen that element will be Clickable

• I'll suggest to use "ExpectedConditions.visibility" instead of "ExpectedConditions.elementToBeClickable"

• This solution will work for each and every scenario irrespective of action

  WebDriverWait wait = new WebDriverWait(driver, 30);
  wait.until(ExpectedConditions.visibilityOf(By.id("digit_1"));
  driver.findElement(By.id("digit_1")).click();
  

Answer 3

FluentWait wait= new FluentWait (d); Wait.pollingEvery (200,TimeUnit.MILLISECONDS); wait.withTimeouts (5,TimeUnit.SECONDS); wait.ignoring (noSuchElementException.class); wait.until (ExpectedCondtions.visibilityOf (By.id ("digit_1"));

Answer 4

If that program is all about waiting statement. I would suggest u should go for implicit wait E.g-

driver.manage().timeouts ().implicitlyWait (20,TIMEUNIT.SECONDS);

Answer 5

What about adding Thread.Slepp(<time from milliseconds >) before starting the find elemant commands.