unbale to click on button on real device(mobile)

Question

enter image description here@Test String text= driver.findElement(By.linkText("Log in")).getText();

    MobileElement SignuP = (MobileElement) driver.findElement(By.className("android.widget.Button"));
    SignuP.click();

Answer 1

By index has work when there is no common id,classpath or accessiblity id

List<WebElement>list =driver.findElements(By.className("android.widget.Button"));
        list.get(0).click();                
        //or we can use xpath
        driver.findElement(By.xpath("//android.widget.Button[@text='Log in']")).click();