fix: add onDestroyView() to release fragment resources

app/src/main/java/com/geeksville/mesh/ui/ChannelFragment.kt

@@ -363,6 +363,11 @@ class ChannelFragment : ScreenFragment("Channel"), Logging {
         }
     }
 
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
     private fun getModemPreset(selectedChannelOptionString: String): ConfigProtos.Config.LoRaConfig.ModemPreset {
         for (item in ChannelOption.values()) {
             if (getString(item.configRes) == selectedChannelOptionString)

app/src/main/java/com/geeksville/mesh/ui/ContactsFragment.kt

@@ -222,6 +222,13 @@ class ContactsFragment : ScreenFragment("Messages"), Logging {
         }
     }
 
+    override fun onDestroyView() {
+        super.onDestroyView()
+        actionMode?.finish()
+        actionMode = null
+        _binding = null
+    }
+
     private inner class ActionModeCallback : ActionMode.Callback {
         override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
             mode.menuInflater.inflate(R.menu.menu_messages, menu)

app/src/main/java/com/geeksville/mesh/ui/DebugFragment.kt

@@ -51,4 +51,9 @@ class DebugFragment : Fragment() {
             logs?.let { adapter.setLogs(it) }
         }
     }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
 }

app/src/main/java/com/geeksville/mesh/ui/MessagesFragment.kt

@@ -320,6 +320,13 @@ class MessagesFragment : Fragment(), Logging {
         }
     }
 
+    override fun onDestroyView() {
+        super.onDestroyView()
+        actionMode?.finish()
+        actionMode = null
+        _binding = null
+    }
+
     private inner class ActionModeCallback : ActionMode.Callback {
         override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
             mode.menuInflater.inflate(R.menu.menu_messages, menu)

app/src/main/java/com/geeksville/mesh/ui/QuickChatSettingsFragment.kt

@@ -109,6 +109,11 @@ class QuickChatSettingsFragment : ScreenFragment("Quick Chat Settings"), Logging
         }
     }
 
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
     data class DialogBuilder(
         val builder: MaterialAlertDialogBuilder,
         val nameInput: EditText,

app/src/main/java/com/geeksville/mesh/ui/SettingsFragment.kt

@@ -618,6 +618,12 @@ class SettingsFragment : ScreenFragment("Settings"), Logging {
         if (binding.provideLocationCheckbox.isChecked)
             checkLocationEnabled(getString(R.string.location_disabled))
     }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
     companion object {
         const val SCAN_PERIOD: Long = 10000 // Stops scanning after 10 seconds
     }

app/src/main/java/com/geeksville/mesh/ui/UsersFragment.kt

@@ -318,4 +318,9 @@ class UsersFragment : ScreenFragment("Users"), Logging {
             nodesAdapter.onNodesChanged(it.values.toTypedArray())
         }
     }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
 }