From 42872e9ad30f5186eadf11d1152d5582b6762fdd Mon Sep 17 00:00:00 2001
From: Eric85710 <ericchen87887@gmail.com>
Date: Thu, 23 Apr 2026 17:24:30 +0800
Subject: [PATCH] dark mode-v7

---
 app/src/main/java/com/example/login_v3/MainActivity.kt      | 4 +---
 .../setting_detail_page/detail_UI/setting_Theme_Page.kt     | 3 ++-
 .../setting_detail_page/viewmodel/Theme_ViewModel.kt        | 6 ++++--
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/app/src/main/java/com/example/login_v3/MainActivity.kt b/app/src/main/java/com/example/login_v3/MainActivity.kt
index 46fb8cf..3258fa3 100644
--- a/app/src/main/java/com/example/login_v3/MainActivity.kt
+++ b/app/src/main/java/com/example/login_v3/MainActivity.kt
@@ -24,9 +24,7 @@ class MainActivity : ComponentActivity() {
 
         installSplashScreen()
         setContent {
-            val currentAppTheme = themeViewModel.currentTheme.value
-
-            Login_V3Theme(appTheme = currentAppTheme) {
+            Login_V3Theme(appTheme = themeViewModel.currentTheme) {
                 Technologia()
             }
         }
diff --git a/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt b/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt
index e29cedd..2ef961d 100644
--- a/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt
+++ b/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/detail_UI/setting_Theme_Page.kt
@@ -21,7 +21,8 @@ import com.example.login_v3.ui.theme.AppTheme
 fun setting_theme_page(
     viewModel: Theme_ViewModel
 ){
-    val selectedTheme = viewModel.currentTheme.value
+    // 直接讀取，不需要 .value
+    val selectedTheme = viewModel.currentTheme
 
     Column(modifier = Modifier.padding(16.dp)) {
         Text(
diff --git a/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/viewmodel/Theme_ViewModel.kt b/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/viewmodel/Theme_ViewModel.kt
index 8560cd4..6eadd2b 100644
--- a/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/viewmodel/Theme_ViewModel.kt
+++ b/app/src/main/java/com/example/login_v3/home/setting/setting_detail_page/viewmodel/Theme_ViewModel.kt
@@ -1,14 +1,16 @@
 package com.example.login_v3.home.setting.setting_detail_page.viewmodel
 
+import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
 import androidx.lifecycle.ViewModel
 import com.example.login_v3.ui.theme.AppTheme
 
 class Theme_ViewModel : ViewModel() {
-    var currentTheme = mutableStateOf(AppTheme.SYSTEM)
+    var currentTheme by mutableStateOf(AppTheme.DARK)
         private set
 
     fun updateTheme(newTheme: AppTheme) {
-        currentTheme.value = newTheme
+        currentTheme = newTheme
     }
 }
\ No newline at end of file