owncloud · joragua · Jun 25, 2026 · Jun 25, 2026 · Jun 25, 2026
diff --git a/build.gradle b/build.gradle
@@ -2,7 +2,7 @@ buildscript {
     ext {
         // SDK
         sdkCompileVersion = 36
-        sdkMinVersion = 24
+        sdkMinVersion = 28
         sdkTargetVersion = 36
     }
 

diff --git a/changelog/unreleased/4885 b/changelog/unreleased/4885
@@ -0,0 +1,6 @@
+Change: Upgrade minimum SDK version to API 28 (Android 9)
+
+The minimum SDK version has been upgraded to API 28 (Android 9)
+and previous versions will not be supported anymore
+
+https://github.com/owncloud/android/pull/4885
diff --git a/owncloudApp/src/androidTest/java/com/owncloud/android/utils/OCTestAndroidJUnitRunner.kt b/owncloudApp/src/androidTest/java/com/owncloud/android/utils/OCTestAndroidJUnitRunner.kt
@@ -1,7 +1,7 @@
 /**
  * ownCloud Android client application
  *
- * Copyright (C) 2022 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -30,9 +30,7 @@ import com.github.tmurakami.dexopener.DexOpener
  */
 class OCTestAndroidJUnitRunner : AndroidJUnitRunner() {
     override fun newApplication(cl: ClassLoader, className: String, context: Context): Application {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) {
-            DexOpener.install(this)
-        }
+        DexOpener.install(this)
         return super.newApplication(cl, className, context)
     }
 }
diff --git a/owncloudApp/src/main/java/com/owncloud/android/MainApp.kt b/owncloudApp/src/main/java/com/owncloud/android/MainApp.kt
@@ -10,7 +10,7 @@
  * @author Aitor Ballesteros Pavón
  * @author Jorge Aguado Recio
  *
- * Copyright (C) 2025 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -33,7 +33,6 @@ import android.app.NotificationManager.IMPORTANCE_LOW
 import android.content.Context
 import android.content.pm.PackageInfo
 import android.content.pm.PackageManager
-import android.os.Build
 import android.os.Bundle
 import android.view.WindowManager
 import android.widget.CheckBox
@@ -272,10 +271,6 @@ class MainApp : Application() {
     }
 
     private fun createNotificationChannels() {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
-            return
-        }
-
         createNotificationChannel(
             id = DOWNLOAD_NOTIFICATION_CHANNEL_ID,
             name = getString(R.string.download_notification_channel_name),

diff --git a/...dApp/src/main/java/com/owncloud/android/presentation/files/details/FileDetailsFragment.kt b/...dApp/src/main/java/com/owncloud/android/presentation/files/details/FileDetailsFragment.kt
@@ -27,7 +27,6 @@ import android.accounts.Account
 import android.content.Intent
 import android.graphics.Bitmap
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.Menu
@@ -259,11 +258,9 @@ class FileDetailsFragment : FileFragment() {
     }
 
     private fun setRolesAccessibilityToMenuItems(menu: Menu) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            val roleAccessibilityDescription = getString(R.string.button_role_accessibility)
-            menu.findItem(R.id.action_rename_file)?.contentDescription = "${getString(R.string.common_rename)} $roleAccessibilityDescription"
-            menu.findItem(R.id.action_remove_file)?.contentDescription = "${getString(R.string.common_remove)} $roleAccessibilityDescription"
-        }
+        val roleAccessibilityDescription = getString(R.string.button_role_accessibility)
+        menu.findItem(R.id.action_rename_file)?.contentDescription = "${getString(R.string.common_rename)} $roleAccessibilityDescription"
+        menu.findItem(R.id.action_remove_file)?.contentDescription = "${getString(R.string.common_remove)} $roleAccessibilityDescription"
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {

diff --git a/...pp/src/main/java/com/owncloud/android/presentation/files/filelist/MainFileListFragment.kt b/...pp/src/main/java/com/owncloud/android/presentation/files/filelist/MainFileListFragment.kt
@@ -32,7 +32,6 @@ import android.content.res.ColorStateList
 import android.content.res.Configuration
 import android.graphics.drawable.Drawable
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.Menu
@@ -266,28 +265,26 @@ class MainFileListFragment : Fragment(),
         }
 
         private fun setRolesAccessibilityToMenuItems() {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                val roleAccessibilityDescription = getString(R.string.button_role_accessibility)
-                menu?.apply {
-                    findItem(R.id.file_action_select_all)?.contentDescription =
-                        "${getString(R.string.actionbar_select_all)} $roleAccessibilityDescription"
-                    findItem(R.id.action_select_inverse)?.contentDescription =
-                        "${getString(R.string.actionbar_select_inverse)} $roleAccessibilityDescription"
-                    findItem(R.id.action_open_file_with)?.contentDescription =
-                        "${getString(R.string.actionbar_open_with)} $roleAccessibilityDescription"
-                    findItem(R.id.action_rename_file)?.contentDescription = "${getString(R.string.common_rename)} $roleAccessibilityDescription"
-                    findItem(R.id.action_move)?.contentDescription = "${getString(R.string.actionbar_move)} $roleAccessibilityDescription"
-                    findItem(R.id.action_copy)?.contentDescription = "${getString(R.string.copy)} $roleAccessibilityDescription"
-                    findItem(R.id.action_send_file)?.contentDescription =
-                        "${getString(R.string.actionbar_send_file)} $roleAccessibilityDescription"
-                    findItem(R.id.action_set_available_offline)?.contentDescription =
-                        "${getString(R.string.set_available_offline)} $roleAccessibilityDescription"
-                    findItem(R.id.action_unset_available_offline)?.contentDescription =
-                        "${getString(R.string.unset_available_offline)} $roleAccessibilityDescription"
-                    findItem(R.id.action_see_details)?.contentDescription =
-                        "${getString(R.string.actionbar_see_details)} $roleAccessibilityDescription"
-                    findItem(R.id.action_remove_file)?.contentDescription = "${getString(R.string.common_remove)} $roleAccessibilityDescription"
-                }
+            val roleAccessibilityDescription = getString(R.string.button_role_accessibility)
+            menu?.apply {
+                findItem(R.id.file_action_select_all)?.contentDescription =
+                    "${getString(R.string.actionbar_select_all)} $roleAccessibilityDescription"
+                findItem(R.id.action_select_inverse)?.contentDescription =
+                    "${getString(R.string.actionbar_select_inverse)} $roleAccessibilityDescription"
+                findItem(R.id.action_open_file_with)?.contentDescription =
+                    "${getString(R.string.actionbar_open_with)} $roleAccessibilityDescription"
+                findItem(R.id.action_rename_file)?.contentDescription = "${getString(R.string.common_rename)} $roleAccessibilityDescription"
+                findItem(R.id.action_move)?.contentDescription = "${getString(R.string.actionbar_move)} $roleAccessibilityDescription"
+                findItem(R.id.action_copy)?.contentDescription = "${getString(R.string.copy)} $roleAccessibilityDescription"
+                findItem(R.id.action_send_file)?.contentDescription =
+                    "${getString(R.string.actionbar_send_file)} $roleAccessibilityDescription"
+                findItem(R.id.action_set_available_offline)?.contentDescription =
+                    "${getString(R.string.set_available_offline)} $roleAccessibilityDescription"
+                findItem(R.id.action_unset_available_offline)?.contentDescription =
+                    "${getString(R.string.unset_available_offline)} $roleAccessibilityDescription"
+                findItem(R.id.action_see_details)?.contentDescription =
+                    "${getString(R.string.actionbar_see_details)} $roleAccessibilityDescription"
+                findItem(R.id.action_remove_file)?.contentDescription = "${getString(R.string.common_remove)} $roleAccessibilityDescription"
             }
         }
 

diff --git a/owncloudApp/src/main/java/com/owncloud/android/presentation/settings/SettingsFragment.kt b/owncloudApp/src/main/java/com/owncloud/android/presentation/settings/SettingsFragment.kt
@@ -2,8 +2,9 @@
  * ownCloud Android client application
  *
  * @author Juan Carlos Garrote Gascón
+ * @author Jorge Aguado Recio
  *
- * Copyright (C) 2021 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  * <p>
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -24,7 +25,6 @@ import android.content.ClipData
 import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
-import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
 import androidx.preference.Preference
@@ -93,16 +93,12 @@ class SettingsFragment : PreferenceFragmentCompat() {
             true
         }
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            subsectionNotifications?.setOnPreferenceClickListener {
-                val intent = Intent(Settings.ACTION_APP_NOTIFICATION_SETTINGS).apply {
-                    putExtra(Settings.EXTRA_APP_PACKAGE, requireContext().packageName)
-                }
-                startActivity(intent)
-                true
+        subsectionNotifications?.setOnPreferenceClickListener {
+            val intent = Intent(Settings.ACTION_APP_NOTIFICATION_SETTINGS).apply {
+                putExtra(Settings.EXTRA_APP_PACKAGE, requireContext().packageName)
             }
-        } else {
-            settingsScreen.removePreferenceFromScreen(subsectionNotifications)
+            startActivity(intent)
+            true
         }
 
         prefAboutApp?.apply {

diff --git a/...owncloud/android/presentation/settings/automaticuploads/SettingsPictureUploadsFragment.kt b/...owncloud/android/presentation/settings/automaticuploads/SettingsPictureUploadsFragment.kt
@@ -5,7 +5,7 @@
  * @author Aitor Ballesteros Pavón
  * @author Jorge Aguado Recio
  *
- * Copyright (C) 2024 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  * <p>
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -25,7 +25,6 @@ package com.owncloud.android.presentation.settings.automaticuploads
 import android.app.Activity
 import android.content.DialogInterface
 import android.content.Intent
-import android.os.Build
 import android.os.Bundle
 import android.provider.DocumentsContract
 import android.view.View
@@ -209,9 +208,7 @@ class SettingsPictureUploadsFragment : PreferenceFragmentCompat() {
                 currentSourcePath.takeUnless { it.endsWith(File.separator) } ?: currentSourcePath.plus(File.separator)
             }
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                    putExtra(DocumentsContract.EXTRA_INITIAL_URI, sourcePath)
-                }
+                putExtra(DocumentsContract.EXTRA_INITIAL_URI, sourcePath)
                 addFlags(
                     Intent.FLAG_GRANT_READ_URI_PERMISSION
                             or Intent.FLAG_GRANT_WRITE_URI_PERMISSION

diff --git a/...m/owncloud/android/presentation/settings/automaticuploads/SettingsVideoUploadsFragment.kt b/...m/owncloud/android/presentation/settings/automaticuploads/SettingsVideoUploadsFragment.kt
@@ -5,7 +5,7 @@
  * @author Aitor Ballesteros Pavón
  * @author Jorge Aguado Recio
  *
- * Copyright (C) 2024 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  * <p>
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -25,7 +25,6 @@ package com.owncloud.android.presentation.settings.automaticuploads
 import android.app.Activity
 import android.content.DialogInterface
 import android.content.Intent
-import android.os.Build
 import android.os.Bundle
 import android.provider.DocumentsContract
 import android.view.View
@@ -207,9 +206,7 @@ class SettingsVideoUploadsFragment : PreferenceFragmentCompat() {
                 currentSourcePath.takeUnless { it.endsWith(File.separator) } ?: currentSourcePath.plus(File.separator)
             }
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                    putExtra(DocumentsContract.EXTRA_INITIAL_URI, sourcePath)
-                }
+                putExtra(DocumentsContract.EXTRA_INITIAL_URI, sourcePath)
                 addFlags(
                     Intent.FLAG_GRANT_READ_URI_PERMISSION
                             or Intent.FLAG_GRANT_WRITE_URI_PERMISSION

diff --git a/owncloudApp/src/main/java/com/owncloud/android/ui/activity/DrawerActivity.kt b/owncloudApp/src/main/java/com/owncloud/android/ui/activity/DrawerActivity.kt
@@ -33,7 +33,6 @@ import android.accounts.AccountManagerFuture
 import android.content.Intent
 import android.content.res.ColorStateList
 import android.content.res.Configuration
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.provider.DocumentsContract
@@ -137,11 +136,9 @@ abstract class DrawerActivity : ToolbarActivity() {
         // Notch support
         getNavView()?.addOnAttachStateChangeListener(object : View.OnAttachStateChangeListener {
             override fun onViewAttachedToWindow(v: View) {
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
-                    v.rootWindowInsets.displayCutout?.let {
-                        getDrawerActiveUser()?.layoutParams?.height =
-                            DisplayUtils.getDrawerHeaderHeight(it.safeInsetTop, resources)
-                    }
+                v.rootWindowInsets.displayCutout?.let {
+                    getDrawerActiveUser()?.layoutParams?.height =
+                        DisplayUtils.getDrawerHeaderHeight(it.safeInsetTop, resources)
                 }
             }
 
@@ -499,16 +496,14 @@ abstract class DrawerActivity : ToolbarActivity() {
     }
 
     private fun setRolesAccessibilityToMenuItems() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            val navViewMenu = getNavView()?.menu ?: return
-            val roleAccessibilityDescription = getString(R.string.button_role_accessibility)
-            navViewMenu.apply {
-                findItem(R.id.nav_settings)?.contentDescription = "${getString(R.string.actionbar_settings)} $roleAccessibilityDescription"
-                findItem(R.id.drawer_menu_feedback)?.contentDescription = "${getString(R.string.drawer_feedback)} $roleAccessibilityDescription"
-                findItem(R.id.drawer_menu_help)?.contentDescription = "${getString(R.string.prefs_help)} $roleAccessibilityDescription"
-                findItem(R.id.drawer_menu_privacy_policy)?.contentDescription =
-                    "${getString(R.string.prefs_privacy_policy)} $roleAccessibilityDescription"
-            }
+        val navViewMenu = getNavView()?.menu ?: return
+        val roleAccessibilityDescription = getString(R.string.button_role_accessibility)
+        navViewMenu.apply {
+            findItem(R.id.nav_settings)?.contentDescription = "${getString(R.string.actionbar_settings)} $roleAccessibilityDescription"
+            findItem(R.id.drawer_menu_feedback)?.contentDescription = "${getString(R.string.drawer_feedback)} $roleAccessibilityDescription"
+            findItem(R.id.drawer_menu_help)?.contentDescription = "${getString(R.string.prefs_help)} $roleAccessibilityDescription"
+            findItem(R.id.drawer_menu_privacy_policy)?.contentDescription =
+                "${getString(R.string.prefs_privacy_policy)} $roleAccessibilityDescription"
         }
     }
 

diff --git a/owncloudApp/src/main/java/com/owncloud/android/ui/activity/FileDisplayActivity.kt b/owncloudApp/src/main/java/com/owncloud/android/ui/activity/FileDisplayActivity.kt
@@ -588,9 +588,7 @@ class FileDisplayActivity : FileActivity(),
     }
 
     private fun setRolesAccessibilityToMenuItems() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            selectAllMenuItem?.contentDescription = "${getString(R.string.actionbar_select_all)} ${getString(R.string.button_role_accessibility)}"
-        }
+        selectAllMenuItem?.contentDescription = "${getString(R.string.actionbar_select_all)} ${getString(R.string.button_role_accessibility)}"
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {

diff --git a/owncloudApp/src/main/java/com/owncloud/android/ui/fragment/FileFragment.java b/owncloudApp/src/main/java/com/owncloud/android/ui/fragment/FileFragment.java
@@ -5,8 +5,9 @@
  * @author Christian Schabesberger
  * @author David González Verdugo
  * @author Aitor Ballesteros Pavón
+ * @author Jorge Aguado Recio
  *
- * Copyright (C) 2024 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  * <p>
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -157,12 +158,10 @@ public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflat
         super.onCreateOptionsMenu(menu, inflater);
         inflater.inflate(R.menu.file_actions_menu, menu);
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            String roleAccessibilityDescription = getString(R.string.button_role_accessibility);
-            menu.findItem(R.id.action_open_file_with).setContentDescription(getString(R.string.actionbar_open_with) + " " + roleAccessibilityDescription);
-            menu.findItem(R.id.action_send_file).setContentDescription(getString(R.string.actionbar_send_file) + " " + roleAccessibilityDescription);
-            menu.findItem(R.id.action_set_available_offline).setContentDescription(getString(R.string.set_available_offline) + " " + roleAccessibilityDescription);
-            menu.findItem(R.id.action_unset_available_offline).setContentDescription(getString(R.string.set_available_offline) + " " + roleAccessibilityDescription);
-        }
+        String roleAccessibilityDescription = getString(R.string.button_role_accessibility);
+        menu.findItem(R.id.action_open_file_with).setContentDescription(getString(R.string.actionbar_open_with) + " " + roleAccessibilityDescription);
+        menu.findItem(R.id.action_send_file).setContentDescription(getString(R.string.actionbar_send_file) + " " + roleAccessibilityDescription);
+        menu.findItem(R.id.action_set_available_offline).setContentDescription(getString(R.string.set_available_offline) + " " + roleAccessibilityDescription);
+        menu.findItem(R.id.action_unset_available_offline).setContentDescription(getString(R.string.set_available_offline) + " " + roleAccessibilityDescription);
     }
 }
diff --git a/owncloudApp/src/main/java/com/owncloud/android/ui/preview/PreviewAudioFragment.kt b/owncloudApp/src/main/java/com/owncloud/android/ui/preview/PreviewAudioFragment.kt
@@ -34,7 +34,6 @@ import android.content.Intent
 import android.content.ServiceConnection
 import android.graphics.BitmapFactory
 import android.media.MediaMetadataRetriever
-import android.os.Build
 import android.os.Bundle
 import android.os.IBinder
 import android.view.LayoutInflater
@@ -264,10 +263,8 @@ class PreviewAudioFragment : FileFragment() {
     }
 
     private fun setRolesAccessibilityToMenuItems(menu: Menu) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            menu.findItem(R.id.action_see_details)?.contentDescription =
-                "${getString(R.string.actionbar_see_details)} ${getString(R.string.button_role_accessibility)}"
-        }
+        menu.findItem(R.id.action_see_details)?.contentDescription =
+            "${getString(R.string.actionbar_see_details)} ${getString(R.string.button_role_accessibility)}"
     }
 
     /**

diff --git a/owncloudApp/src/main/java/com/owncloud/android/ui/preview/PreviewImageFragment.kt b/owncloudApp/src/main/java/com/owncloud/android/ui/preview/PreviewImageFragment.kt
@@ -10,7 +10,7 @@
  * @author Aitor Ballesteros Pavón
  * @author Jorge Aguado Recio
  *
- * Copyright (C) 2025 ownCloud GmbH.
+ * Copyright (C) 2026 ownCloud GmbH.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2,
@@ -31,7 +31,6 @@ import android.accounts.Account
 import android.graphics.Bitmap
 import android.graphics.Color
 import android.graphics.drawable.Drawable
-import android.os.Build
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.Menu
@@ -207,10 +206,8 @@ class PreviewImageFragment : FileFragment() {
     }
 
     private fun setRolesAccessibilityToMenuItems(menu: Menu) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            menu.findItem(R.id.action_see_details)?.contentDescription =
-                "${getString(R.string.actionbar_see_details)} ${getString(R.string.button_role_accessibility)}"
-        }
+        menu.findItem(R.id.action_see_details)?.contentDescription =
+            "${getString(R.string.actionbar_see_details)} ${getString(R.string.button_role_accessibility)}"
     }
 
     /**