Fixes

app/src/main/java/io/nekohasekai/sfa/ui/dashboard/GroupsFragment.kt

@@ -100,19 +100,24 @@ class GroupsFragment : Fragment(), CommandClientHandler {
         commandClient = null
     }
 
+    private var displayed = false
+    private fun updateDisplayed(newValue: Boolean) {
+        if (displayed != newValue) {
+            displayed = newValue
+            binding.statusText.isVisible = !displayed
+            binding.container.isVisible = displayed
+        }
+    }
+
     override fun connected() {
-        val binding = _binding ?: return
         lifecycleScope.launch(Dispatchers.Main) {
-            binding.statusText.isVisible = false
-            binding.container.isVisible = true
+            updateDisplayed(true)
         }
     }
 
     override fun disconnected(message: String?) {
-        val binding = _binding ?: return
         lifecycleScope.launch(Dispatchers.Main) {
-            binding.statusText.isVisible = true
-            binding.container.isVisible = false
+            updateDisplayed(false)
         }
     }
 
@@ -123,6 +128,7 @@ class GroupsFragment : Fragment(), CommandClientHandler {
             groups.add(message.next())
         }
         activity?.runOnUiThread {
+            updateDisplayed(groups.isNotEmpty())
             adapter.groups = groups
             adapter.notifyDataSetChanged()
         }

app/src/main/java/io/nekohasekai/sfa/ui/main/DashboardFragment.kt

@@ -34,6 +34,7 @@ class DashboardFragment : Fragment(R.layout.fragment_dashboard) {
     private fun onCreate() {
         val activity = activity ?: return
         binding.dashboardPager.adapter = Adapter(this)
+        binding.dashboardPager.offscreenPageLimit = Page.values().size
         TabLayoutMediator(binding.dashboardTabLayout, binding.dashboardPager) { tab, position ->
             tab.setText(Page.values()[position].titleRes)
         }.attach()
@@ -42,8 +43,7 @@ class DashboardFragment : Fragment(R.layout.fragment_dashboard) {
                 Status.Stopped -> {
                     binding.fab.setImageResource(R.drawable.ic_play_arrow_24)
                     binding.fab.show()
-                    binding.dashboardTabLayout.isVisible = false
-                    binding.dashboardPager.isUserInputEnabled = false
+                    disablePager()
                 }
 
                 Status.Starting -> {
@@ -53,12 +53,12 @@ class DashboardFragment : Fragment(R.layout.fragment_dashboard) {
                 Status.Started -> {
                     binding.fab.setImageResource(R.drawable.ic_stop_24)
                     binding.fab.show()
-                    binding.dashboardTabLayout.isVisible = true
-                    binding.dashboardPager.isUserInputEnabled = true
+                    enablePager()
                 }
 
                 Status.Stopping -> {
                     binding.fab.hide()
+                    disablePager()
                 }
 
                 else -> {}
@@ -79,6 +79,17 @@ class DashboardFragment : Fragment(R.layout.fragment_dashboard) {
         }
     }
 
+    private fun enablePager() {
+        binding.dashboardTabLayout.isVisible = true
+        binding.dashboardPager.isUserInputEnabled = true
+    }
+
+    private fun disablePager() {
+        binding.dashboardTabLayout.isVisible = false
+        binding.dashboardPager.isUserInputEnabled = false
+        binding.dashboardPager.setCurrentItem(0, false)
+    }
+
     enum class Page(@StringRes val titleRes: Int, val fragmentClass: Class<out Fragment>) {
         Overview(R.string.title_overview, OverviewFragment::class.java),
         Groups(R.string.title_groups, GroupsFragment::class.java);