Decouple the channel object from the fragments themselves

...to allow the framework to recreate the fragment objects as needed

app/src/main/java/im/angry/openeuicc/ui/EuiccManagementFragment.kt

@@ -10,6 +10,7 @@ import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import im.angry.openeuicc.OpenEUICCApplication
 import im.angry.openeuicc.R
 import im.angry.openeuicc.core.EuiccChannel
 import im.angry.openeuicc.databinding.EuiccProfileBinding
@@ -18,7 +19,19 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 
-class EuiccManagementFragment(private val channel: EuiccChannel) : Fragment() {
+class EuiccManagementFragment : Fragment() {
+    companion object {
+        fun newInstance(slotId: Int): EuiccManagementFragment {
+            val instance = EuiccManagementFragment()
+            instance.arguments = Bundle().apply {
+                putInt("slotId", slotId)
+            }
+            return instance
+        }
+    }
+
+    private lateinit var channel: EuiccChannel
+
     private var _binding: FragmentEuiccBinding? = null
     private val binding get() = _binding!!
 
@@ -47,6 +60,8 @@ class EuiccManagementFragment(private val channel: EuiccChannel) : Fragment() {
 
     override fun onStart() {
         super.onStart()
+        val slotId = requireArguments().getInt("slotId")
+        channel = (requireActivity().application as OpenEUICCApplication).euiccChannelRepo.availableChannels[slotId]
         refresh()
     }
 

app/src/main/java/im/angry/openeuicc/ui/MainActivity.kt

@@ -78,9 +78,9 @@ class MainActivity : AppCompatActivity() {
         }
 
         withContext(Dispatchers.Main) {
-            repo.availableChannels.forEach {
-                spinnerAdapter.add(it.name)
-                fragments.add(EuiccManagementFragment(it))
+            repo.availableChannels.forEachIndexed { idx, channel ->
+                spinnerAdapter.add(channel.name)
+                fragments.add(EuiccManagementFragment.newInstance(idx))
             }
 
             if (fragments.isNotEmpty()) {