【Android自动化】在使用uiautomator框架自动化时，往往有时再运行脚本时发现xxx实例属性不被允许

例如：

# -*- coding:utf-8 -*-
from uiautomator import device as d

d(classname="android.widget.ListView", resourceId="android:id/list").click()

输出：
Traceback (most recent call last):
File "E:/Project/qqqq/13.py", line 4, in <module>
d(classname="android.widget.ListView", resourceId="android:id/list").click()
File "C:Python27libsite-packagesuiautomator-0.1.32-py2.7.egguiautomator\__init__.py", line 665, in __call__

File "C:Python27libsite-packagesuiautomator-0.1.32-py2.7.egguiautomator\__init__.py", line 257, in __init__

File "C:Python27libsite-packagesuiautomator-0.1.32-py2.7.egguiautomator\__init__.py", line 264, in __setitem__

ReferenceError: classname is not allowed.

分析：

出现这种错误时一般都是实例的属性编写错误导致的，正确的应该是：className     实例属性的名字命名遵循规则为（如果只是一个单词，那首字母小写，如果是多个单词拼接，那从第二个单词开始的首字母大写如（aaBbCc），下面把uiautomator中所有实例属性key全部列出如下，不要再出错啦

class Selector(dict):

"""The class is to build parameters for UiSelector passed to Android device.
"""
__fields = {
"text": (0x01, None), # MASK_TEXT,
"textContains": (0x02, None), # MASK_TEXTCONTAINS,
"textMatches": (0x04, None), # MASK_TEXTMATCHES,
"textStartsWith": (0x08, None), # MASK_TEXTSTARTSWITH,
"className": (0x10, None), # MASK_CLASSNAME
"classNameMatches": (0x20, None), # MASK_CLASSNAMEMATCHES
"description": (0x40, None), # MASK_DESCRIPTION
"descriptionContains": (0x80, None), # MASK_DESCRIPTIONCONTAINS
"descriptionMatches": (0x0100, None), # MASK_DESCRIPTIONMATCHES
"descriptionStartsWith": (0x0200, None), # MASK_DESCRIPTIONSTARTSWITH
"checkable": (0x0400, False), # MASK_CHECKABLE
"checked": (0x0800, False), # MASK_CHECKED
"clickable": (0x1000, False), # MASK_CLICKABLE
"longClickable": (0x2000, False), # MASK_LONGCLICKABLE,
"scrollable": (0x4000, False), # MASK_SCROLLABLE,
"enabled": (0x8000, False), # MASK_ENABLED,
"focusable": (0x010000, False), # MASK_FOCUSABLE,
"focused": (0x020000, False), # MASK_FOCUSED,
"selected": (0x040000, False), # MASK_SELECTED,
"packageName": (0x080000, None), # MASK_PACKAGENAME,
"packageNameMatches": (0x100000, None), # MASK_PACKAGENAMEMATCHES,
"resourceId": (0x200000, None), # MASK_RESOURCEID,
"resourceIdMatches": (0x400000, None), # MASK_RESOURCEIDMATCHES,
"index": (0x800000, 0), # MASK_INDEX,
"instance": (0x01000000, 0) # MASK_INSTANCE,
}