Use lifecycle-scoped IO for screen work

app/build.gradle.kts

@@ -90,6 +90,7 @@ dependencies {
     implementation(libs.drawerlayout)
     implementation(libs.recyclerview)
     implementation(libs.swiperefreshlayout)
+    implementation(libs.lifecycle.runtime.ktx)
 
     testImplementation(libs.junit)
 }

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

@@ -17,6 +17,7 @@ import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import androidx.lifecycle.lifecycleScope
 import com.google.android.material.color.MaterialColors
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.switchmaterial.SwitchMaterial
@@ -31,6 +32,9 @@ import se.ajpanton.notificationlog.settings.AppFilterSettingsStore
 import se.ajpanton.notificationlog.settings.LoggingRuleStore
 import se.ajpanton.notificationlog.settings.LoggingType
 import se.ajpanton.notificationlog.settings.PerAppEventSettingsStore
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 class FilterAppsFragment : Fragment(R.layout.fragment_event_settings) {
     private var binding: FragmentEventSettingsBinding? = null
@@ -121,8 +125,9 @@ class FilterAppsFragment : Fragment(R.layout.fragment_event_settings) {
         val rule = store.load()
         val seen = SeenApps.snapshot()
         val context = requireContext().applicationContext
-        Thread {
+        viewLifecycleOwner.lifecycleScope.launch {
-            val apps = context.packageManager.getInstalledApplications(0).map { info ->
+            val apps = withContext(Dispatchers.IO) {
+                context.packageManager.getInstalledApplications(0).map { info ->
                 ListedApp(
                     label = context.packageManager.getApplicationLabel(info).toString(),
                     packageName = info.packageName,
@@ -131,15 +136,14 @@ class FilterAppsFragment : Fragment(R.layout.fragment_event_settings) {
                     hasEventOverride = perAppEventSettings.hasOverride(info.packageName),
                 )
                 }
+            }
             val items = AppListOrdering.items(apps, rule.onlySeenApps, rule.seenAppsFirst)
-            activity?.runOnUiThread {
             if (binding === currentBinding && generation == appLoadGeneration) {
                 appAdapter.submit(items)
                 currentBinding.appListLoading.visibility = View.GONE
                 currentBinding.appListRefresh.isRefreshing = false
             }
         }
-        }.start()
     }
 
     private fun setPackageSelected(packageName: String, selected: Boolean) {

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

@@ -19,7 +19,11 @@ import androidx.core.view.WindowCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsControllerCompat
 import androidx.fragment.app.DialogFragment
+import androidx.lifecycle.lifecycleScope
 import se.ajpanton.notificationlog.data.EncryptedImageStore
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 /** Full-screen image viewer kept within MainActivity so opening it does not re-lock the app. */
 class ImageViewerDialogFragment : DialogFragment() {
@@ -67,14 +71,13 @@ class ImageViewerDialogFragment : DialogFragment() {
         val targetWidth = resources.displayMetrics.widthPixels
         val targetHeight = resources.displayMetrics.heightPixels
         val appContext = requireContext().applicationContext
-        Thread {
+        lifecycleScope.launch {
-            val bitmap = runCatching {
+            val bitmap = withContext(Dispatchers.IO) { runCatching {
                 EncryptedImageStore(appContext).read(imageId)?.let { bytes ->
                     decodeForViewer(bytes, targetWidth, targetHeight)
                 }
-            }.getOrNull()
+            }.getOrNull() }
-            activity?.runOnUiThread {
+            if (!isAdded) return@launch
-                if (!isAdded) return@runOnUiThread
             progress.visibility = View.GONE
             if (bitmap == null) {
                 root.addView(TextView(requireContext()).apply {
@@ -87,7 +90,6 @@ class ImageViewerDialogFragment : DialogFragment() {
                 image.visibility = View.VISIBLE
             }
         }
-        }.start()
     }
 
     private fun decodeForViewer(bytes: ByteArray, targetWidth: Int, targetHeight: Int): Bitmap? {

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

@@ -7,6 +7,7 @@ import android.content.Intent
 import android.provider.Settings
 import android.view.View
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.lifecycleScope
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import se.ajpanton.notificationlog.databinding.FragmentSettingsBinding
 import se.ajpanton.notificationlog.settings.LogField
@@ -19,6 +20,9 @@ import se.ajpanton.notificationlog.export.LogExporter
 import se.ajpanton.notificationlog.settings.StorageLimits
 import se.ajpanton.notificationlog.settings.StorageLimitsStore
 import java.util.zip.ZipOutputStream
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 class SettingsFragment : Fragment(R.layout.fragment_settings) {
     private var binding: FragmentSettingsBinding? = null
@@ -64,7 +68,9 @@ class SettingsFragment : Fragment(R.layout.fragment_settings) {
             }
             store.save(StorageLimits(logLimit * StorageLimitsStore.MEBIBYTE, imageLimit * StorageLimitsStore.MEBIBYTE))
             val appContext = requireContext().applicationContext
-            Thread { EncryptedNotificationLogStore(appContext).enforceLimits() }.start()
+            viewLifecycleOwner.lifecycleScope.launch(Dispatchers.IO) {
+                EncryptedNotificationLogStore(appContext).enforceLimits()
+            }
         }
     }
 
@@ -73,7 +79,11 @@ class SettingsFragment : Fragment(R.layout.fragment_settings) {
             .setTitle("Clear logs?")
             .setMessage("This permanently removes every stored notification log and copied image.")
             .setNegativeButton("Cancel", null)
-            .setPositiveButton("Clear") { _, _ -> EncryptedNotificationLogStore(requireContext()).clear() }
+            .setPositiveButton("Clear") { _, _ ->
+                viewLifecycleOwner.lifecycleScope.launch(Dispatchers.IO) {
+                    EncryptedNotificationLogStore(requireContext().applicationContext).clear()
+                }
+            }
             .show()
     }
 
@@ -98,7 +108,9 @@ class SettingsFragment : Fragment(R.layout.fragment_settings) {
     private fun writeExport(uri: Uri) {
         val format = pendingExport ?: return
         val context = requireContext().applicationContext
-        Thread {
+        viewLifecycleOwner.lifecycleScope.launch {
+            val result = runCatching {
+                withContext(Dispatchers.IO) {
                     val logStore = EncryptedNotificationLogStore(context)
                     val settings = LogViewSettingsStore(context).load()
                     context.contentResolver.openOutputStream(uri)?.use { output ->
@@ -108,7 +120,13 @@ class SettingsFragment : Fragment(R.layout.fragment_settings) {
                     ExportFormat.HTML_ZIP -> writeHtmlZip(ZipOutputStream(output), logStore, settings, context)
                 }
             }
-        }.start()
+                }
+            }
+            pendingExport = null
+            result.exceptionOrNull()?.let { error ->
+                android.widget.Toast.makeText(requireContext(), "Export failed: ${error.message ?: "unknown error"}", android.widget.Toast.LENGTH_LONG).show()
+            }
+        }
     }
 
     private fun writeCsv(

gradle/libs.versions.toml

@@ -8,6 +8,7 @@ material = "1.10.0"
 drawerLayout = "1.2.0"
 recyclerView = "1.3.2"
 swipeRefreshLayout = "1.1.0"
+lifecycle = "2.8.7"
 junit = "4.13.2"
 
 [libraries]
@@ -18,6 +19,7 @@ material = { group = "com.google.android.material", name = "material", version.r
 drawerlayout = { group = "androidx.drawerlayout", name = "drawerlayout", version.ref = "drawerLayout" }
 recyclerview = { group = "androidx.recyclerview", name = "recyclerview", version.ref = "recyclerView" }
 swiperefreshlayout = { group = "androidx.swiperefreshlayout", name = "swiperefreshlayout", version.ref = "swipeRefreshLayout" }
+lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycle" }
 junit = { group = "junit", name = "junit", version.ref = "junit" }
 
 [plugins]