AppiumDriver升级到2.0.0版本引发的问题--Cannot instantiate the type AppiumDriver

1. 问题描述和起因

在使用Appium1.7.0及其以下版本的时候,我们可以直接使用如下代码来创建一个AppiumDriver实例进行对安卓设备的操作。

driver = new AndroidDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
但在把Appium包升级到当前最新的2.0.0版本的时候,这段代码会引发如下的一问题

AppiumDriver升级到2.0.0版本引发的问题--Cannot instantiate the type AppiumDriver_第1张图片
当前的pom.xml相关设置如下:记得把1.7.0改成2.0.0或者是将来更高级版本


  io.appium
  java-client
  2.0.0
  1.7.0

2.问题分析

究其原因,发现Appium2.0.0把AppiumDriver这个类改成了抽象函数,所以到导致了这个问题

public abstract class AppiumDriver extends RemoteWebDriver implements MobileDriver,
		ContextAware, Rotatable, FindsByAccessibilityId, LocationContext,
		DeviceActionShortcuts, TouchShortcuts, InteractsWithFiles,
		InteractsWithApps, ScrollsTo {

	private final static ErrorHandler errorHandler = new ErrorHandler(
			new ErrorCodesMobile(), true);
	private URL remoteAddress;
	private RemoteLocationContext locationContext;
	private ExecuteMethod executeMethod;

	// frequently used command parameters
	protected final String KEY_CODE = "keycode";
	protected final String PATH = "path";
	private final String SETTINGS = "settings";
根据2.0.0的Changelog的第一点:

Changelog

2.0.0

  • AppiumDriver is now an abstract class, use IOSDriver and AndroidDriver which both extend it. You no longer need to include the PLATFORM_NAME desired capability since it's automatic for each class. Thanks to @TikhomirovSergey for all their work
AppiumDriver现在变成了一个抽象类,请使用从它继承下来的IOSDriver和AndroidDriver。你不再需要加上PLATFORM_NAME这个capability,因为代码会根据你使用的是IOSDriver或者AndroidDriver来确定究竟是哪个平台。
  • ScrollTo() and ScrollToExact() methods reimplemented
  • Zoom() and Pinch() are now a little smarter and less likely to fail if you element is near the edge of the screen. Congratulate @BJap on their first PR!

3.问题解决

根据问题分析,把代码修改如下,使用AndroidDriver而非原来的AppiumDriver。
public class NoetPadTest {
    /**
     * Create the test case
     *
     * @param testName name of the test case
     */
	private AndroidDriver driver;

    @Before
    public void setUp() throws Exception {
        // set up appium
        File classpathRoot = new File(System.getProperty("user.dir"));
        File appDir = new File(classpathRoot, "apps");
        File app = new File(appDir, "NotePad.apk");
        DesiredCapabilities capabilities = new DesiredCapabilities();
        capabilities.setCapability("deviceName","Android");
        //capabilities.setCapability("platformVersion", "4.2");
        capabilities.setCapability("platformName", "Android");
        //capabilities.setCapability("app", app.getAbsolutePath());
        capabilities.setCapability("appPackage", "com.example.android.notepad");
        capabilities.setCapability("appActivity", "com.example.android.notepad.NotesList");
        //capabilities.setCapability("appActivity", ".NotesList");
        driver = new AndroidDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
    } 

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


 

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