...

app/src/main/java/com/base/appzxhy/ui/main/MainActivity.kt

@@ -3,6 +3,7 @@ package com.base.appzxhy.ui.main
 import android.graphics.Color
 import android.view.LayoutInflater
 import android.widget.TextView
+import androidx.lifecycle.ViewModelProvider
 import androidx.navigation.NavController
 import androidx.navigation.fragment.NavHostFragment
 import com.base.appzxhy.R
@@ -16,6 +17,10 @@ import com.google.android.material.tabs.TabLayout.OnTabSelectedListener
 
 class MainActivity : BaseActivity<ActivityMainBinding>(ActivityMainBinding::inflate) {
 
+    private val viewModel by lazy(LazyThreadSafetyMode.NONE) {
+        ViewModelProvider(this)[MainViewModel::class.java]
+    }
+
     private lateinit var navController: NavController
     private val homeTabs by lazy {
         arrayOf(

app/src/main/java/com/base/appzxhy/ui/main/MainViewModel.kt

+package com.base.appzxhy.ui.main
+
+import androidx.lifecycle.ViewModel
+
+class MainViewModel : ViewModel() {
+}
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