为什么我的布局未显示任何窗口小部件，而Java文件却无法解析任何窗口小部件和布局？

Question

现在

我的布局文件：而不显示任何根目录布局 activity_message.xml

   <component name="libraryTable">
      <library name="Gradle: com.android.support:localbroadcastmanager:28.0.0@aar">
        <CLASSES>
          <root url="file://$USER_HOME$/.gradle/caches/transforms-1/files-1.1/localbroadcastmanager-28.0.0.aar/708d8bd603d7c576ac53e24024a750fd/res" />
          <root url="jar://$USER_HOME$/.gradle/caches/transforms-1/files-1.1/localbroadcastmanager-28.0.0.aar/708d8bd603d7c576ac53e24024a750fd/jars/classes.jar!/" />
        </CLASSES>
        <JAVADOC />
        <SOURCES />
      </library>
    </component>