Java Selendroid Selenium android（sencha extjs）测试无法'；找不到元素

我正在尝试在我的android设备上运行一个测试，并使用SeleniumWebDriver和Java。目前，仅启动.apk。Selendroid检查器无法加载属性。它显示正在加载进度条，但无法加载web元素查看器。 相关登录系统代码：

'Ext.define('TutorialApp.view.login.Login', {
    extend: 'Ext.window.Window',
    xtype: 'login',

    requires: [
        'TutorialApp.view.login.LoginController',
        'Ext.form.Panel'
    ],

    controller: 'login',
    bodyPadding: 10,
    title: 'Login Window',
    closable: false,
    autoShow: true,

    items: {
        xtype: 'form',
        reference: 'form',
        items: [{
            xtype: 'textfield',
            name: 'username',
            fieldLabel: 'Username',
            allowBlank: false
        }, {
            xtype: 'textfield',
            name: 'password',
            inputType: 'password',
            fieldLabel: 'Password',
            allowBlank: false
        }, {
            xtype: 'displayfield',
            hideEmptyLabel: false,
            value: 'Enter any non-blank password'
        }],
        buttons: [{
            text: 'Login',
            formBind: true,
            listeners: {
                click: 'onLoginClick'
            }
        }]
    }
});

这是我的密码：

import io.selendroid.SelendroidCapabilities;
import io.selendroid.SelendroidConfiguration;
import io.selendroid.SelendroidDriver;
import io.selendroid.SelendroidLauncher;
import io.selendroid.device.DeviceTargetPlatform;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.testng.annotations.AfterSuite;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.Test;

public class NewTest {​
private WebDriver driver;

@BeforeSuite
public void setUp() throws Exception {
SelendroidConfiguration config = new SelendroidConfiguration();
config.addSupportedApp("test.apk");
SelendroidLauncher selendroidServer = new SelendroidLauncher(config);
selendroidServer.launchSelendroid();
SelendroidCapabilities capa = new SelendroidCapabilities();
capa.setAut("de.bgk:1.0.4");
capa.setPlatformVersion(DeviceTargetPlatform.ANDROID19);
capa.setEmulator(false);
driver = new SelendroidDriver(capa);
}

@Test
public void selendroidTest() throws Exception {​
System.out.print("Start executing test");
Thread.sleep(10000);
WebDriverWait wait = new WebDriverWait(driver, 10);
wait.until(ExpectedConditions.visibilityOfElementLocated(By.name("username")));
driver.findElement(By.name("username")).sendKeys("user");
driver.findElement(By.name("password")).sendKeys("password");
driver.findElement(By.linkText("Login")).click();
}

@AfterSuite
public void tearDown() {
driver.quit();
}
}​

如何用Java在Selendroid中解决这个问题？我将非常感谢您的帮助