如图，这是巴比智慧园早教app的一个界面，通过adb dump 界面结构ui得到xml如下
<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
<hierarchy rotation="1">
<node index="0" text="" resource-id="" class="android.widget.LinearLayout" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[0,0][1600,900]">
<node index="0" text="" resource-id="com.zhihui:id/cancletask" class="android.widget.LinearLayout" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[412,201][1188,699]">
<node index="0" text="" resource-id="com.zhihui:id/part1" class="android.widget.LinearLayout" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[428,217][624,273]" />
<node index="1" text="" resource-id="com.zhihui:id/part2" class="android.widget.LinearLayout" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[412,306][1143,498]">
<node index="0" text="更新提示： 1.【开放】课本点读，全册免费、无广告； 2.【新增】语文课文全解，哪里不懂点哪里； 3.【新增】语文词语朗读、解释、听写等；" resource-id="com.zhihui:id/update_content" class="android.widget.TextView" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="true" enabled="true" focusable="true" focused="false" scrollable="false" long-clickable="true" password="false" selected="false" visible-to-user="true" bounds="[462,306][1143,498]" />
</node>
<node index="2" text="" resource-id="com.zhihui:id/part3" class="android.widget.LinearLayout" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[462,526][1137,549]">
<node index="0" text="" resource-id="com.zhihui:id/update_progress" class="android.widget.ProgressBar" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[485,526][1114,549]" />
</node>
<node index="3" text="" resource-id="com.zhihui:id/part4" class="android.widget.LinearLayout" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[551,582][1049,658]">
<node NAF="true" index="0" text="" resource-id="com.zhihui:id/bokpc" class="android.widget.Button" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="true" enabled="true" focusable="true" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[551,582][753,658]" />
<node NAF="true" index="1" text="" resource-id="com.zhihui:id/bcanclepc" class="android.widget.Button" package="com.zhihui" content-desc="" checkable="false" checked="false" clickable="true" enabled="true" focusable="true" focused="false" scrollable="false" long-clickable="false" password="false" selected="false" visible-to-user="true" bounds="[847,582][1049,658]" />
</node>
</node>
</node>
</hierarchy>
显然，xml中看不到“现在升级”和“稍后升级”两个按钮的文本，只能看到对应的两个clickable="true"的控件，text属性为空。
想请问，应该用什么框架或者方法可以识别到这种按钮文本？
上述只是举例说明，包括其他类似app也有这种情况，希望有通用性的方法识别，而不是定制化方法，感谢！
