Optimize network status display

app/src/main/java/com/topjohnwu/magisk/ui/home/HomeViewModel.kt

@@ -70,6 +70,9 @@ class HomeViewModel(
     val showUninstall get() =
         Info.env.magiskVersionCode > 0 && stateMagisk != MagiskState.LOADING && isConnected.get()
 
+    @get:Bindable
+    val showSafetyNet get() = Info.hasGMS && isConnected.get()
+
     val itemBinding = itemBindingOf<IconLink> {
         it.bindExtra(BR.viewModel, this)
     }
@@ -77,8 +80,11 @@ class HomeViewModel(
     private var shownDialog = false
 
     override fun refresh() = viewModelScope.launch {
+        state = State.LOADING
         notifyPropertyChanged(BR.showUninstall)
+        notifyPropertyChanged(BR.showSafetyNet)
         repoMagisk.fetchUpdate()?.apply {
+            state = State.LOADED
             stateMagisk = when {
                 !Info.env.isActive -> MagiskState.NOT_INSTALLED
                 magisk.isObsolete -> MagiskState.OBSOLETE
@@ -99,7 +105,7 @@ class HomeViewModel(
             launch {
                 ensureEnv()
             }
-        }
+        } ?: apply { state = State.LOADING_FAILED }
     }
 
     val showTest = false