fix(translation): 修复悬浮窗按钮在Android平台上的显示条件

重构悬浮窗按钮的显示逻辑，将平台检查移到外部条件判断，避免不必要的Obx嵌套

lib/modules/translation/views/translation_view.dart

@@ -207,28 +207,28 @@ class TranslationView extends GetView<TranslationController> {
             return Row(
               children: [
                 // 悬浮窗切换按钮（仅在支持的模式下显示）
-                Obx(() {
+                if (Platform.isAndroid)
-                  if (Platform.isAndroid &&
+                  Obx(() {
-                      (controller.currentMode.value == 'call' ||
+                    if (controller.currentMode.value == 'call' ||
-                          controller.currentMode.value == 'audioVideo')) {
+                        controller.currentMode.value == 'audioVideo') {
-                    return IconButton(
+                      return IconButton(
-                      icon: Icon(
+                        icon: Icon(
-                        controller.isFloatingWindowEnabled.value
+                          controller.isFloatingWindowEnabled.value
-                            ? Icons.picture_in_picture
+                              ? Icons.picture_in_picture
-                            : Icons.picture_in_picture_alt_outlined,
+                              : Icons.picture_in_picture_alt_outlined,
-                        color: controller.isFloatingWindowEnabled.value
+                          color: controller.isFloatingWindowEnabled.value
-                            ? Colors.blue
+                              ? Colors.blue
-                            : (isDarkMode ? Colors.white : Colors.black),
+                              : (isDarkMode ? Colors.white : Colors.black),
-                        size: 24.sp,
+                          size: 24.sp,
-                      ),
+                        ),
-                      onPressed: controller.toggleFloatingWindow,
+                        onPressed: controller.toggleFloatingWindow,
-                      tooltip: controller.isFloatingWindowEnabled.value
+                        tooltip: controller.isFloatingWindowEnabled.value
-                          ? '禁用悬浮窗'
+                            ? '禁用悬浮窗'
-                          : '启用悬浮窗',
+                            : '启用悬浮窗',
-                    );
+                      );
-                  }
+                    }
-                  return const SizedBox.shrink();
+                    return const SizedBox.shrink();
-                }),
+                  }),
                 IconButton(
                   icon: Icon(
                     Icons.radio_button_checked,

pubspec.yaml

@@ -1,7 +1,7 @@
 name: voitrans
 description: "Voitrans - AI Voice Assistant."
 publish_to: "none"
-version: 1.0.17+46
+version: 1.0.18+53
 
 environment:
   sdk: ">=3.3.0 <4.0.0"