手机UI树获取运行正常，打印出来的日志里没有页面里任何文字内容

各位大佬，手机软件内容为视图框，用UI树显示成功，但是没有任何页面内容，请问是什么情况，该怎么解决。

下面是UI树打印日志：

<?xml version='1.0' encoding='UTF-8' standalone='yes' ?> <hierarchy index="0" class="hierarchy" rotation="0" width="1080" height="2160">   <android.widget.FrameLayout index="0" package="tech.echoing.kuril" class="android.widget.FrameLayout" text="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" long-clickable="false" password="false" scrollable="false" selected="false" bounds="[0,0][1080,2160]" displayed="true">     <android.widget.LinearLayout index="0" package="tech.echoing.kuril" class="android.widget.LinearLayout" text="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" long-clickable="false" password="false" scrollable="false" selected="false" bounds="[0,0][1080,2160]" displayed="true">       <android.widget.FrameLayout index="0" package="tech.echoing.kuril" class="android.widget.FrameLayout" text="" resource-id="android:id/content" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" long-clickable="false" password="false" scrollable="false" selected="false" bounds="[0,0][1080,2160]" displayed="true">         <android.widget.FrameLayout index="0" package="tech.echoing.kuril" class="android.widget.FrameLayout" text="" checkable="false" checked="false" clickable="false" enabled="true" focusable="true" focused="true" long-clickable="false" password="false" scrollable="false" selected="false" bounds="[0,0][1080,2160]" displayed="true">           <android.view.View index="0" package="tech.echoing.kuril" class="android.view.View" text="" resource-id="" checkable="false" checked="false" clickable="false" enabled="true" focusable="false" focused="false" long-clickable="false" password="false" scrollable="false" selected="false" bounds="[0,0][1080,2160]" displayed="true" />         </android.widget.FrameLayout>       </android.widget.FrameLayout>     </android.widget.LinearLayout>   </android.widget.FrameLayout> </hierarchy>