背景： 小弟要测试一个 hybrid 类型的 app。apk 进来跳转到 webview，现在能够显示 webview 的内容，却不能进行测试操作。
手机是 Android 4.2.2,电脑是 windows。 代码如下：

DesiredCapabilities capabilities = new DesiredCapabilities();
     capabilities.setCapability("device","Android");
     capabilities.setCapability(CapabilityType.BROWSER_NAME, "");
 capabilities.setCapability(CapabilityType.VERSION, "4.2");
     capabilities.setCapability(CapabilityType.PLATFORM, "WINDOWS");
    capabilities.setCapability("app-package", "com.paic.mobileoa");
    capabilities.setCapability("app-activity", ".LoadingActivity");
     remoteWebDriver = new RemoteWebDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);

 }
 @After
 public void tearDown() throws Exception {
     driver.quit();
 }
 @Test
 public void addContact(){
     try{
         Thread.sleep(20000);
     }catch(Exception e){
         e.printStackTrace();
     }
 remoteWebDriver.switchTo().window("WEBVIEW");
     remoteWebDriver.findElement(By.name("待处理文件")).click();
     remoteWebDriver.executeScript("mobile: leaveWebView");

报错信息：
报错说：
debug: Request received with params: {"name":"WEBVIEW"}
Responding to client that a method is not implemented 为什么啊？？
同样的，我在手机上跑 sample 里面那个 AndroidContactsTest.java 就没有问题。

debug: Appium request initiated at /wd/hub/session/bd62b7a5-c2dd-4545-9f56-594957055823
debug: Request received with params: {}
info: Responding to client with success: {"status":0,"value":{"platform":"WINDOWS","browserN
ame":"","version":"4.2","webStorageEnabled":false,"takesScreenshot":true,"javascriptEnabled"
:true,"databaseEnabled":false,"app-package":"com.paic.mobileoa","device":"Android","app-acti
vity":".LoadingActivity"},"sessionId":"bd62b7a5-c2dd-4545-9f56-594957055823"}
GET /wd/hub/session/bd62b7a5-c2dd-4545-9f56-594957055823 200 9ms - 388b
debug: Appium request initiated at /wd/hub/session/bd62b7a5-c2dd-4545-9f56-594957055823/wind
ow
debug: Request received with params: {"name":"WEBVIEW"}
info: Responding to client that a method is not implemented
POST /wd/hub/session/bd62b7a5-c2dd-4545-9f56-594957055823/window 501 15ms - 180b