Fix bad UI state when changing backup status.

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/chats/ChatsSettingsFragment.kt

@@ -14,6 +14,11 @@ class ChatsSettingsFragment : DSLSettingsFragment(R.string.preferences_chats__ch
 
   private lateinit var viewModel: ChatsSettingsViewModel
 
+  override fun onResume() {
+    super.onResume()
+    viewModel.refresh()
+  }
+
   override fun bindAdapter(adapter: DSLSettingsAdapter) {
     val repository = ChatsSettingsRepository()
     val factory = ChatsSettingsViewModel.Factory(repository)

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/chats/ChatsSettingsViewModel.kt

@@ -52,6 +52,13 @@ class ChatsSettingsViewModel(private val repository: ChatsSettingsRepository) :
     SignalStore.settings().isEnterKeySends = enabled
   }
 
+  fun refresh() {
+    val backupsEnabled = SignalStore.settings().isBackupEnabled && BackupUtil.canUserAccessBackupDirectory(ApplicationDependencies.getApplication())
+    if (store.state.chatBackupsEnabled != backupsEnabled) {
+      store.update { it.copy(chatBackupsEnabled = backupsEnabled) }
+    }
+  }
+
   class Factory(private val repository: ChatsSettingsRepository) : ViewModelProvider.Factory {
     override fun <T : ViewModel?> create(modelClass: Class<T>): T {
       return requireNotNull(modelClass.cast(ChatsSettingsViewModel(repository)))