【Appium_python】启动app,出现多次打开关闭导致失败问题，driver用单例模式（_new

运用多设备，启动app多次出现打开又关闭问题，查看后是多次对driver进行实例化，就用单例的模式进行解决。

单例模式（Singleton Pattern）目的就是保证一个类仅有一个实例，每一次执行类名返回的对象，内存地址是相同的。

根据编写的代码特点就使用_new_方法实现

from appium import webdriver

from util.write_user_command import WriteUserCommand

class Singleton(object):

    driver = None

    def __new__(cls, i, *args, **kwargs):

        if not hasattr(cls, '_instance'):

            orig = super(Singleton, cls)

            write_file = WriteUserCommand()

            devices = write_file.get_value('user_info_' + str(i), 'deviceName')

            port = write_file.get_value('user_info_' + str(i), 'port')

            desired_caps = dict()

            desired_caps['platformName'] = 'Android'

            desired_caps['automationName'] = 'UiAutomator2'

            # 接受中文输入

            # desired_caps['unicodeKeyboard'] = True

            # desired_caps['resetKeyboard'] = True

            desired_caps['noReset'] = True

            desired_caps['deviceName'] = devices

            desired_caps['app'] = 'D:\\Projects\\PycharmProjects\\plum\\apk\\xxxtV5.2.7.4_release.apk'

            desired_caps['appPackage'] = 'xx_package_name'

            # desired_caps['appWaitActivity'] = ''等到某个activity才去执行

            desired_caps['appActivity'] = '.xxxappActivity.WelcomeActivity'

            cls._instance = orig.__new__(cls, *args, **kwargs)

            cls._instance.driver = webdriver.Remote("http://127.0.0.1:" + str(port) + "/wd/hub", desired_caps)

        return cls._instance

    def __init__(self, i, *args, **kwargs):

        self.i = i

class BaseDriver(Singleton):

    def get_driver(self):

        return self.driver

if __name__ == '__main__':

    # driver = BaseDriver().get_driver()

    # appium -p 4725 -bp 4701 -U 127.0.0.1:21503(devices_name)

    pass

巴特西

【Appium_python】启动app,出现多次打开关闭导致失败问题，driver用单例模式（_new_）进行解决。

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