def driver_weixin(platformVersion="6.0.1",deviceName='Galaxy A8'):

    desired_caps2 = {}

    desired_caps2['platformName'] = "Android"

    desired_caps2['platformVersion'] = platformVersion

    desired_caps2['deviceName'] = deviceName

    desired_caps2['udid'] = "75a2daf1"

    #desired_caps2['automationName'] = 'UiAutomator2'

    desired_caps2['appPackage'] = 'com.tencent.mm'

    desired_caps2['appActivity'] = 'com.tencent.mm.ui.LauncherUI'

    desired_caps2['resetKeyboard'] = "True"   #隐藏键盘

    desired_caps2['unicodeKeyboard'] = "True"

    return  desired_caps2

 self.driver = webdriver.Remote("http://127.0.0.1:4725/wd/hub", desired_caps2)

 element = self.driver.find_element_by_xpath(xxxxx)

 SendContent = "我爱中华"

 element.send_keys(u"%s" % SendContent)