Toast是Android中用来显示信息的一种机制，和Dialog不一样，它没有焦点，而且显示的时间有限，很快就消失，Toast是Android的系统特性，不是应用特性，因此通过UI Automator Viewer无法获取控件
Toast被触发后，截图对比
WebElement imagebtn = driver.findElementById("ShowToastButton"); imagebtn.click(); try{ // 通过getScreenshotAs方法来捕捉屏幕，使用OutputType.File作为参数传递给getScreenshotAs方法 // 告诉它将截取的屏幕以文件的形式返回 File scrFile = driver.getScreenshotAs(OutpuType.File); // 使用copyFile保存getScreenshotAs截取的屏幕文件到D盘中并命名为scrshot.png FileUtils.copyFile(scrFile, new File("D:\\scrshot.png")); }catch(Exception e){ e.printStackTrace(); }Selendroid方法(自动化测试引擎)可以识别Toast控件，采用WaitForElement方法获得Toast文本
waitForElement(By.partialLinkText("Hello seledroid toast"), 4, driver);在新版本的Appium中，使用Automator2自动化测试引擎，可以获取Toast
package org.davieyang.testscripts; import static org.testng.Assert.assertNotNull; import io.appium.java_client.android.Activity; import io.appium.java_client.android.AndroidDriver; import java.io.File; import java.net.URL; import java.util.concurrent.TimeUnit; import org.openqa.selenium.By; import org.openqa.selenium.WebElement; import org.openqa.selenium.remote.DesiredCapabilities; import org.openqa.selenium.support.ui.ExpectedCondition; import org.openqa.selenium.support.ui.ExpectedConditions; import org.openqa.selenium.support.ui.WebDriverWait; import org.testng.annotations.AfterMethod; import org.testng.annotations.BeforeMethod; import org.testng.annotations.Test; import io.appium.java_client.remote.AutomationName; import io.appium.java_client.remote.MobileCapabilityType; public class ToastDemo { AndroidDriver<WebElement> driver; @BeforeMethod public void setUp()throws Exception{ File appDir = new File("D:\\"); File app = new File(appDir, "selendroid-test-app-0.17.0.apk"); DesiredCapabilities cap = new DesiredCapabilities(); cap.setCapability(MobileCapabilityType.DEVICE_NAME, "Android Emulator"); cap.setCapability(MobileCapabilityType.APP, app.getAbsolutePath()); cap.setCapability(MobileCapabilityType.AUTOMATION_NAME, AutomationName.ANDROID_UIAUTOMATOR2); driver = new AndroidDriver<>(new URL("http://127.0.0.1:4723/wd/hub"), cap); driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS); } @Test public void testToast(){ Activity activity = new Activity("io.selendroid.testapp", ".HomeScreenActivity"); driver.startActivity(activity); WebElement toastButton = null; toastButton = driver.findElement(By.id("io.selendroid.testapp:id/showToastButton")); toastButton.click(); final WebDriverWait wait = new WebDriverWait(driver, 10); assertNotNull(wait.until(ExpectedConditions.presenceOfElementLocated(By.xpath("//*[@text='Hello selendroid toast!']")))); } @AfterMethod public void TearDown(){ driver.quit(); } }