robotframework+appium 进行 app 自动化时，为了做到定时可以执行用例，保证手机可以一直在亮屏状态，写了如下方法以资源方式导入项目，直接使用 adb_screenOn() 方法，不论屏幕是否亮屏，都可以正常执行用例

# -*- coding:utf-8 -*-  

import os  

class Adb(object):  

    def __init__(self):  
        pass  


    def adb_uninstall_package(self, package_name):  

        """ 
           # 卸载手机内指定包名的app 

        """  
        try:  
            cmd = 'adb uninstall {}'.format( package_name)  
            print cmd  
            text = os.popen(cmd)  
            content = text.read()  
            print content  
            if 'Success' in content:  
                print 'Pass: 卸载手机app成功'.decode('UTF-8').encode('GBK')  
            else:  
                print 'Fail: 卸载手机app失败 '.decode('UTF-8').encode('GBK')  
        except Exception as e:  
            print str(e)  




    def __adb_rouse_phone(self):  

        """ 
          #亮屏手机 
        """  
        try:  
            cmd = 'adb shell input keyevent 26'  
            print cmd  
            text = os.popen(cmd)  
            content = text.read()  
            print  content+'手机屏幕亮屏成功'.decode('UTF-8').encode('GBK')  
        except Exception as e:  
            print str(e)  

    def adb_screenOn(self):  

        """ 
          #先查看手机是否亮屏，如果没有使之亮屏 

        """  
        a = Adb()  
        try:  
            cmd = 'adb shell dumpsys window policy^|grep mScreenOnFully'  
            print cmd  
            text = os.popen(cmd)  
            content = text.read()  
            print content  
            if 'mScreenOnEarly=true mScreenOnFully=true' in content:  
                print 'Pass: 手机屏幕已经是亮屏'.decode('UTF-8').encode('GBK')  
            else:  
                 a.__adb_rouse_phone()  
        except Exception as e:  
            print str(e)