Explain rootless alert status

app/src/main/java/se/ajpanton/notificationsmaster/AlertStatusFragment.kt

@@ -0,0 +1,38 @@
+package se.ajpanton.notificationsmaster
+
+import android.content.ComponentName
+import android.content.Intent
+import android.os.Bundle
+import android.provider.Settings
+import android.view.View
+import androidx.fragment.app.Fragment
+import se.ajpanton.notificationsmaster.alerts.AlertConfigurationStore
+import se.ajpanton.notificationsmaster.capture.NotificationCaptureService
+import se.ajpanton.notificationsmaster.databinding.FragmentAlertStatusBinding
+
+class AlertStatusFragment : Fragment(R.layout.fragment_alert_status) {
+    private var binding: FragmentAlertStatusBinding? = null
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        binding = FragmentAlertStatusBinding.bind(view)
+        binding!!.notificationAccess.setOnClickListener { startActivity(Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS)) }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        val context = requireContext()
+        val config = AlertConfigurationStore(context).load()
+        val access = context.getSystemService(android.app.NotificationManager::class.java)
+            .isNotificationListenerAccessGranted(ComponentName(context, NotificationCaptureService::class.java))
+        binding?.status?.text = buildString {
+            append(if (access) "Notification access is enabled." else "Notification access is disabled.")
+            append("\n\nCustom alerts are ")
+            append(if (config.enabled) "enabled" else "disabled")
+            append(" with ${config.rules.count { it.enabled }} active rule")
+            append(if (config.rules.count { it.enabled } == 1) "." else "s.")
+        }
+        binding?.notificationAccess?.text = if (access) "Notification access enabled" else "Enable notification access"
+    }
+
+    override fun onDestroyView() { binding = null; super.onDestroyView() }
+}

app/src/main/java/se/ajpanton/notificationsmaster/MainActivity.kt

@@ -155,6 +155,7 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
                     page == Page.VIEW_LOGS -> ViewLogsFragment()
                     page == Page.SETTINGS -> SettingsFragment()
                     page == Page.ALERTS -> AlertsFragment()
+                    page == Page.ALERT_STATUS -> AlertStatusFragment()
                     page == Page.PROFILES -> ProfilesFragment()
                     page == Page.RULES -> RulesFragment()
                     page == Page.APPS -> AppsFragment()
@@ -350,6 +351,7 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
         VIEW_LOGS(R.id.nav_view_logs, R.string.page_view_logs),
         SETTINGS(R.id.nav_settings, R.string.page_settings),
         ALERTS(R.id.nav_alerts, R.string.page_alerts),
+        ALERT_STATUS(R.id.nav_alert_status, R.string.page_alert_status),
         PROFILES(R.id.nav_profiles, R.string.page_profiles),
         RULES(R.id.nav_rules, R.string.page_rules),
         APPS(R.id.nav_apps, R.string.page_apps),