Request listener rebind on startup

app/src/main/java/se/ajpanton/notificationlog/ViewLogsFragment.kt

@@ -2,6 +2,8 @@ package se.ajpanton.notificationlog
 
 import android.graphics.BitmapFactory
 import android.os.Bundle
+import android.content.ComponentName
+import android.app.NotificationManager
 import android.text.TextUtils
 import android.view.View
 import android.widget.ImageView
@@ -18,6 +20,7 @@ import se.ajpanton.notificationlog.settings.LogViewSettings
 import se.ajpanton.notificationlog.settings.LogViewSettingsStore
 import se.ajpanton.notificationlog.settings.TimestampZone
 import se.ajpanton.notificationlog.settings.DisplayEvent
+import se.ajpanton.notificationlog.capture.NotificationCaptureService
 import java.text.DateFormat
 import java.util.Date
 import androidx.fragment.app.Fragment
@@ -91,6 +94,11 @@ class ViewLogsFragment : Fragment(R.layout.fragment_view_logs) {
     private fun render(view: FragmentViewLogsBinding, addedRows: List<LogRow>, reset: Boolean) {
         if (reset) view.logRows.removeAllViews()
         view.emptyView.visibility = if (rows.isEmpty()) View.VISIBLE else View.GONE
+        view.emptyView.text = if (hasNotificationAccess()) {
+            "No logs yet."
+        } else {
+            "Notification access is disabled. Enable it in Settings."
+        }
         val settings = LogViewSettingsStore(requireContext()).load()
         addedRows.filter { eventFor(it.entry.action) in settings.visibleEvents }
             .forEach { row -> view.logRows.addView(logRowView(row, settings)) }
@@ -264,6 +272,10 @@ class ViewLogsFragment : Fragment(R.layout.fragment_view_logs) {
         else -> DisplayEvent.DISAPPEARING
     }
 
+    private fun hasNotificationAccess(): Boolean = requireContext()
+        .getSystemService(NotificationManager::class.java)
+        .isNotificationListenerAccessGranted(ComponentName(requireContext(), NotificationCaptureService::class.java))
+
     private fun timestamp(value: Long, zone: TimestampZone, eventTimeZoneId: String?): String = DateFormat.getDateTimeInstance().apply {
         timeZone = when (zone) {
             TimestampZone.UTC -> java.util.TimeZone.getTimeZone("UTC")