diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 9263655..e961458 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -38,6 +38,10 @@ android {
                 "proguard-rules.pro"
             )
             signingConfig = signingConfigs.getByName("defaultSignature")
+            composeCompiler {
+                includeSourceInformation = false
+                includeTraceMarkers = false
+            }
         }
         debug {
             signingConfig = signingConfigs.getByName("defaultSignature")
diff --git a/app/src/main/java/com/bintianqi/owndroid/dpm/Users.kt b/app/src/main/java/com/bintianqi/owndroid/dpm/Users.kt
index 3de39c4..a954ff2 100644
--- a/app/src/main/java/com/bintianqi/owndroid/dpm/Users.kt
+++ b/app/src/main/java/com/bintianqi/owndroid/dpm/Users.kt
@@ -31,21 +31,30 @@ import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.PlayArrow
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
 import androidx.compose.material3.Card
+import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.SegmentedButton
+import androidx.compose.material3.SegmentedButtonDefaults
+import androidx.compose.material3.SingleChoiceSegmentedButtonRow
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableLongStateOf
 import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -53,10 +62,13 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
 import androidx.navigation.NavHostController
 import com.bintianqi.owndroid.R
 import com.bintianqi.owndroid.parseTimestamp
@@ -70,6 +82,9 @@ import com.bintianqi.owndroid.ui.MyScaffold
 import com.bintianqi.owndroid.ui.SwitchItem
 import com.bintianqi.owndroid.uriToStream
 import com.bintianqi.owndroid.yesOrNo
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 @Composable
 fun Users(navCtrl: NavHostController) {
@@ -202,14 +217,14 @@ fun UserOperation(navCtrl: NavHostController) {
     val userManager = context.getSystemService(Context.USER_SERVICE) as UserManager
     val dpm = context.getDPM()
     val receiver = context.getReceiver()
-    var idInput by remember { mutableStateOf("") }
-    var useUid by remember { mutableStateOf(false) }
+    var input by remember { mutableStateOf("") }
     val focusMgr = LocalFocusManager.current
+    var useUserId by remember { mutableStateOf(false) }
     fun withUserHandle(operation: (UserHandle) -> Unit) {
-        val userHandle = if(useUid && VERSION.SDK_INT >= 24) {
-            UserHandle.getUserHandleForUid(idInput.toInt())
+        val userHandle = if(useUserId && VERSION.SDK_INT >= 24) {
+            UserHandle.getUserHandleForUid(input.toInt() * 100000)
         } else {
-            userManager.getUserForSerialNumber(idInput.toLong())
+            userManager.getUserForSerialNumber(input.toLong())
         }
         if(userHandle == null) {
             Toast.makeText(context, R.string.user_not_exist, Toast.LENGTH_SHORT).show()
@@ -217,27 +232,24 @@ fun UserOperation(navCtrl: NavHostController) {
             operation(userHandle)
         }
     }
-    val legalInput = try {
-        idInput.toInt()
-        true
-    } catch(_: Exception) {
-        false
-    }
+    val legalInput = input.toIntOrNull() != null
     MyScaffold(R.string.user_operation, 8.dp, navCtrl) {
+        if(VERSION.SDK_INT >= 24) SingleChoiceSegmentedButtonRow(modifier = Modifier.fillMaxWidth()) {
+            SegmentedButton(!useUserId, { useUserId = false }, SegmentedButtonDefaults.itemShape(0, 2)) {
+                Text(stringResource(R.string.serial_number))
+            }
+            SegmentedButton(useUserId, { useUserId = true }, SegmentedButtonDefaults.itemShape(1, 2)) {
+                Text(stringResource(R.string.user_id))
+            }
+        }
         OutlinedTextField(
-            value = idInput,
-            onValueChange = {
-                idInput = it
-            },
-            label = { Text(if(useUid) "UID" else stringResource(R.string.serial_number)) },
-            modifier = Modifier.fillMaxWidth(),
+            value = input,
+            onValueChange = { input = it },
+            label = { Text(stringResource(if(useUserId) R.string.user_id else R.string.serial_number)) },
+            modifier = Modifier.fillMaxWidth().padding(top = 4.dp, bottom = 8.dp),
             keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number, imeAction = ImeAction.Done),
             keyboardActions = KeyboardActions(onDone = { focusMgr.clearFocus() })
         )
-        Spacer(Modifier.padding(vertical = 3.dp))
-        if(VERSION.SDK_INT >= 24) {
-            CheckBoxItem(text = R.string.use_uid, checked = useUid, operation = { idInput=""; useUid = it })
-        }
         if(VERSION.SDK_INT >= 28) {
             Button(
                 onClick = {
@@ -250,6 +262,7 @@ fun UserOperation(navCtrl: NavHostController) {
                 enabled = legalInput,
                 modifier = Modifier.fillMaxWidth()
             ) {
+                Icon(Icons.Default.PlayArrow, null, Modifier.padding(end = 4.dp))
                 Text(stringResource(R.string.start_in_background))
             }
         }
@@ -261,6 +274,7 @@ fun UserOperation(navCtrl: NavHostController) {
             enabled = legalInput,
             modifier = Modifier.fillMaxWidth()
         ) {
+            Icon(painterResource(R.drawable.sync_alt_fill0), null, Modifier.padding(end = 4.dp))
             Text(stringResource(R.string.user_operation_switch))
         }
         if(VERSION.SDK_INT >= 28) {
@@ -275,6 +289,7 @@ fun UserOperation(navCtrl: NavHostController) {
                 enabled = legalInput,
                 modifier = Modifier.fillMaxWidth()
             ) {
+                Icon(Icons.Default.Close, null, Modifier.padding(end = 4.dp))
                 Text(stringResource(R.string.stop))
             }
         }
@@ -284,7 +299,7 @@ fun UserOperation(navCtrl: NavHostController) {
                 withUserHandle {
                     if(dpm.removeUser(receiver, it)) {
                         context.showOperationResultToast(true)
-                        idInput = ""
+                        input = ""
                     } else {
                         Toast.makeText(context, R.string.failed, Toast.LENGTH_SHORT).show()
                     }
@@ -293,9 +308,9 @@ fun UserOperation(navCtrl: NavHostController) {
             enabled = legalInput,
             modifier = Modifier.fillMaxWidth()
         ) {
+            Icon(Icons.Default.Delete, null, Modifier.padding(end = 4.dp))
             Text(stringResource(R.string.delete))
         }
-        InfoCard(R.string.info_user_operation)
     }
 }
 
@@ -308,7 +323,10 @@ fun CreateUser(navCtrl: NavHostController) {
     val receiver = context.getReceiver()
     val focusMgr = LocalFocusManager.current
     var userName by remember { mutableStateOf("") }
+    var creating by remember { mutableStateOf(false) }
+    var createdUserSerialNumber by remember { mutableLongStateOf(-1) }
     var flag by remember { mutableIntStateOf(0) }
+    val coroutine = rememberCoroutineScope()
     MyScaffold(R.string.create_user, 8.dp, navCtrl) {
         OutlinedTextField(
             value = userName,
@@ -333,20 +351,39 @@ fun CreateUser(navCtrl: NavHostController) {
                 flag and DevicePolicyManager.LEAVE_ALL_SYSTEM_APPS_ENABLED != 0
             ) { flag = flag xor DevicePolicyManager.LEAVE_ALL_SYSTEM_APPS_ENABLED }
         }
-        var newUserHandle: UserHandle? by remember { mutableStateOf(null) }
         Spacer(Modifier.padding(vertical = 5.dp))
         Button(
             onClick = {
                 focusMgr.clearFocus()
-                newUserHandle = dpm.createAndManageUser(receiver, userName, receiver, null, flag)
-                context.showOperationResultToast(newUserHandle != null)
+                creating = true
+                coroutine.launch(Dispatchers.IO) {
+                    println(Thread.currentThread().name)
+                    try {
+                        val uh = dpm.createAndManageUser(receiver, userName, receiver, null, flag)
+                        withContext(Dispatchers.Main) {
+                            createdUserSerialNumber = userManager.getSerialNumberForUser(uh)
+                        }
+                    } catch(_: Exception) {
+                        context.showOperationResultToast(false)
+                    }
+                    withContext(Dispatchers.Main) { creating = false }
+                }
             },
             modifier = Modifier.fillMaxWidth()
         ) {
             Text(stringResource(R.string.create))
         }
-        Spacer(Modifier.padding(vertical = 5.dp))
-        if(newUserHandle != null) { Text(text = stringResource(R.string.serial_number_of_new_user_is, userManager.getSerialNumberForUser(newUserHandle))) }
+        if(createdUserSerialNumber != -1L) AlertDialog(
+            title = { Text(stringResource(R.string.success)) },
+            text = { Text(stringResource(R.string.serial_number_of_new_user_is, createdUserSerialNumber)) },
+            confirmButton = {
+                TextButton({ createdUserSerialNumber = -1 }) { Text(stringResource(R.string.confirm)) }
+            },
+            onDismissRequest = { createdUserSerialNumber = -1 }
+        )
+        if(creating) Dialog({}, DialogProperties(false, false)) {
+            CircularProgressIndicator()
+        }
     }
 }
 
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index f7b7f91..1e1182d 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -508,14 +508,12 @@
     <string name="logout_enabled">Выход из системы разрешен</string>
     <string name="ephemeral_user">Временный пользователь</string>
     <string name="affiliated_user">Аффилированный пользователь</string>
-    <string name="user_id">Идентификатор пользователя</string>
     <string name="user_serial_number">Серийный номер пользователя</string>
     <string name="user_operation">Операция с пользователем</string>
     <string name="user_not_exist">Пользователь не существует</string> 
     <string name="serial_number">Серийный номер</string>
     <string name="secondary_users">Вторичные пользователи</string> 
-    <string name="no_secondary_users">Нет вторичных пользователей</string> 
-    <string name="use_uid">Использовать UID</string>
+    <string name="no_secondary_users">Нет вторичных пользователей</string>
     <string name="logout_current_user">Выйти из текущего пользователя</string>
     <string name="start_in_background">Запустить в фоновом режиме</string>
     <string name="user_operation_switch">Переключиться</string>
@@ -524,7 +522,7 @@
     <string name="create_user_skip_wizard">Пропустить мастер настройки</string>
     <string name="create_user_ephemeral_user">Временный пользователь</string>
     <string name="create_user_enable_all_system_app">Включить все системные приложения</string>
-    <string name="serial_number_of_new_user_is">Серийный номер этого пользователя: %1$s</string>
+    <string name="serial_number_of_new_user_is">Серийный номер этого пользователя: %1$d</string>
     <string name="affiliation_id">Аффилированный идентификатор</string>
     <string name="change_user_icon">Изменить значок пользователя</string>
     <string name="file_picker_instead_gallery">Использовать выборщик файлов вместо галереи</string>
@@ -702,7 +700,6 @@
     <string name="info_disable_user_control">Пользователь не сможет очищать данные приложений или принудительно останавливать пакеты.</string>
     <string name="info_keep_uninstalled_apps">Установить список приложений, которые нужно сохранить в виде APK-файлов, даже если ни у одного пользователя в данный момент они не установлены.</string>
     <string name="info_headless_system_user_mode">Режим "безголового" системного пользователя означает, что системный пользователь запускает системные службы и некоторый системный интерфейс, но он не связан с каким-либо реальным человеком, и для связи с реальными людьми должны быть созданы дополнительные пользователи.</string>
-    <string name="info_user_operation">Рекомендуется указать пользователя по серийному номеру, также можно использовать UID, UID должен принадлежать любому из приложений целевого пользователя.</string>
     <string name="info_affiliated_id">Когда владелец устройства создает управляемого пользователя, управляемый пользователь не является аффилированным. Чтобы сделать управляемого пользователя аффилированным с владельцем устройства, вам следует установить одинаковые аффилированные идентификаторы в основном и управляемом пользователях.</string>
     <string name="info_reset_password">Установить новый пароль блокировки экрана. Длина этого пароля должна быть не менее 4 цифр. Оставьте поле пустым, чтобы удалить пароль.\nЕсли вы установите цифровой пароль длиной 6 символов или меньше, он будет установлен как PIN-код.</string>
     <string name="info_screen_timeout">Установить максимальное время бездействия пользователя, по истечении которого устройство будет заблокировано. Это ограничивает время, которое может установить пользователь.\nЗначение 0 означает отсутствие ограничений.</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index 1c026db..ea1dcf1 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -512,14 +512,12 @@
     <string name="logout_enabled">Logout enabled</string> <!--TODO-->
     <string name="ephemeral_user">Geçici kullanıcı</string>
     <string name="affiliated_user">Bağlı kullanıcı</string>
-    <string name="user_id">Kullanıcı ID</string>
     <string name="user_serial_number">Kullanıcı seri numarası</string>
     <string name="secondary_users">Secondary users</string> <!--TODO-->
     <string name="no_secondary_users">No secondary users</string> <!--TODO-->
     <string name="user_operation">Kullanıcı işlemi</string>
     <string name="user_not_exist">User does not exist</string> <!--TODO-->
     <string name="serial_number">Seri numarası</string>
-    <string name="use_uid">UID kullan</string>
     <string name="logout_current_user">Mevcut kullanıcıyı çıkış yap</string>
     <string name="start_in_background">Arka planda başlat</string>
     <string name="user_operation_switch">Değiştir</string>
@@ -528,7 +526,7 @@
     <string name="create_user_skip_wizard">Sihirbazı atla</string>
     <string name="create_user_ephemeral_user">Geçici kullanıcı</string>
     <string name="create_user_enable_all_system_app">Tüm sistem uygulamalarını etkinleştir</string>
-    <string name="serial_number_of_new_user_is">Bu kullanıcının seri numarası: %1$s</string>
+    <string name="serial_number_of_new_user_is">Bu kullanıcının seri numarası: %1$d</string>
     <string name="affiliation_id">Bağlılık ID</string>
     <string name="change_user_icon">Kullanıcı simgesini değiştir</string>
     <string name="file_picker_instead_gallery">Galeri yerine dosya seçici kullan</string>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 06c5014..3dbc933 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -499,14 +499,12 @@
     <string name="logout_enabled">用户可登出</string>
     <string name="ephemeral_user">临时用户</string>
     <string name="affiliated_user">附属用户</string>
-    <string name="user_id">当前UserID</string>
     <string name="user_serial_number">当前用户序列号</string>
     <string name="secondary_users">次要用户</string>
     <string name="no_secondary_users">无次要用户</string>
     <string name="user_operation">用户操作</string>
     <string name="user_not_exist">用户不存在</string>
     <string name="serial_number">序列号</string>
-    <string name="use_uid">使用UID</string>
     <string name="logout_current_user">登出当前用户</string>
     <string name="start_in_background">在后台启动</string>
     <string name="user_operation_switch">切换</string>
@@ -515,7 +513,7 @@
     <string name="create_user_skip_wizard">跳过创建用户向导</string>
     <string name="create_user_ephemeral_user">临时用户</string>
     <string name="create_user_enable_all_system_app">启用所有系统应用</string>
-    <string name="serial_number_of_new_user_is">新用户的序列号：%1$s</string>
+    <string name="serial_number_of_new_user_is">新用户的序列号：%1$d</string>
     <string name="affiliation_id">附属用户ID</string>
     <string name="change_user_icon">更换用户头像</string>
     <string name="file_picker_instead_gallery">使用文件选择器而不是相册</string>
@@ -689,7 +687,6 @@
     <string name="info_disable_user_control">用户无法清除这些应用的存储空间，也无法强制停止应用</string>
     <string name="info_keep_uninstalled_apps">这个列表中的应用的APK将会一直保留，即使没有任何用户安装这个应用</string>
     <string name="info_headless_system_user_mode">无头系统用户模式意味着系统用户运行系统服务和一些系统UI，但它不与任何真实的人相关联，必须创建额外的用户才能与真实的人相关联。</string>
-    <string name="info_user_operation">推荐使用用户序列号来标识用户，如果要使用UID，UID可以是运行在目标用户中任意应用的UID</string>
     <string name="info_affiliated_id">当Device owner创建并管理用户时，新的用户不是附属用户。Device owner设置和受管理用户完全相同的附属用户ID后，受管理用户成为附属于Device owner的用户</string>
     <string name="info_reset_password">设置一个新的密码，密码的长度需要4位或以上，不输入密码将会清除现有的密码。长度在6位或以下的纯数字密码将会设置为PIN码。</string>
     <string name="info_screen_timeout">设置设备锁定前用户活动的最大时间。这限制了用户可以设置的时间长度。\n值为0表示不做限制。</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 115c9d6..5b99103 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -537,14 +537,13 @@
     <string name="logout_enabled">Logout enabled</string>
     <string name="ephemeral_user">Ephemeral user</string>
     <string name="affiliated_user">Affiliated user</string>
-    <string name="user_id">UserID</string>
+    <string name="user_id" translatable="false">User ID</string>
     <string name="user_serial_number">User serial number</string>
     <string name="secondary_users">Secondary users</string>
     <string name="no_secondary_users">No secondary users</string>
     <string name="user_operation">User operation</string>
     <string name="user_not_exist">User does not exist</string>
     <string name="serial_number">Serial number</string>
-    <string name="use_uid">Use UID</string>
     <string name="logout_current_user">Logout current user</string>
     <string name="start_in_background">Start in background</string>
     <string name="user_operation_switch">Switch</string>
@@ -553,7 +552,7 @@
     <string name="create_user_skip_wizard">Skip wizard</string>
     <string name="create_user_ephemeral_user">Ephemeral user</string>
     <string name="create_user_enable_all_system_app">Enable all system app</string>
-    <string name="serial_number_of_new_user_is">Serial number of this user: %1$s</string>
+    <string name="serial_number_of_new_user_is">Serial number of this user: %1$d</string>
     <string name="affiliation_id">Affiliation ID</string>
     <string name="change_user_icon">Change user icon</string>
     <string name="file_picker_instead_gallery">Use file picker instead of gallery</string>
@@ -727,7 +726,6 @@
     <string name="info_disable_user_control">User will not be able to clear app data or force-stop packages.</string>
     <string name="info_keep_uninstalled_apps">Set a list of apps to keep around as APKs even if no user has currently installed it. </string>
     <string name="info_headless_system_user_mode">Headless system user mode means the system user runs system services and some system UI, but it is not associated with any real person and additional users must be created to be associated with real persons.</string>
-    <string name="info_user_operation">It is recommended to specify a user with serial number, you can also use UID, the UID should be any of the apps in the target user.</string>
     <string name="info_affiliated_id">When Device owner create a managed user, the managed user isn\'t affiliated. In order to make the managed user affiliated with the Device owner, you should set same affiliated IDs in main user and managed user</string>
     <string name="info_reset_password">Set a new lockscreen password. The length of this password must be at least 4 digits. Keep it empty to remove password.\nIf you set a numeric password that length is 6 or lower, it will set as PIN</string>
     <string name="info_screen_timeout">Set the maximum time for user activity until the device will lock. This limits the length that the user can set.\nA value of 0 means there is no restriction.</string>