添加注释

app/src/main/java/com/sw/dualscreen/activity/MainActivity.kt

@@ -43,6 +43,9 @@ import timber.log.Timber
 import java.io.File
 import java.util.concurrent.Executors
 
+/**
+ * 服务员显示界面
+ */
 class MainActivity : BaseActivity<ActivityMainBinding>() {
     private val viewModel by viewModels<UserViewModel>()
     private var imageCapture: ImageCapture? = null