diff --git a/app/src/main/java/com/ckkj/defense_device/home/HomeMenuFragment.kt b/app/src/main/java/com/ckkj/defense_device/home/HomeMenuFragment.kt
index 9e8e804..3140b40 100644
--- a/app/src/main/java/com/ckkj/defense_device/home/HomeMenuFragment.kt
+++ b/app/src/main/java/com/ckkj/defense_device/home/HomeMenuFragment.kt
@@ -392,6 +392,8 @@ class HomeMenuFragment : Fragment() {
                         Log.d("DeviceList", "deviceBeanList size = ${deviceBeanList.size}")
                         updateDeviceList()
                     } else {
+                        binding.rvDeviceList.visibility = View.GONE
+                        binding.layoutNoPermission.visibility = View.VISIBLE
                         Toast.makeText(requireContext(), response.msg, Toast.LENGTH_SHORT).show()
                         if (isLoadMore) {
                             hasMore = false
@@ -401,6 +403,8 @@ class HomeMenuFragment : Fragment() {
                 }
             } catch (e: Exception) {
                 withContext(Dispatchers.Main) {
+                    binding.rvDeviceList.visibility = View.GONE
+                    binding.layoutNoPermission.visibility = View.VISIBLE
                     Toast.makeText(requireContext(), R.string.network_error, Toast.LENGTH_SHORT).show()
                     isLoading = false
                     if (isLoadMore) {
diff --git a/app/src/main/java/com/ckkj/defense_device/liveVideo/LinkedUserActivity.kt b/app/src/main/java/com/ckkj/defense_device/liveVideo/LinkedUserActivity.kt
index ecdb0bb..1f76e90 100644
--- a/app/src/main/java/com/ckkj/defense_device/liveVideo/LinkedUserActivity.kt
+++ b/app/src/main/java/com/ckkj/defense_device/liveVideo/LinkedUserActivity.kt
@@ -257,6 +257,7 @@ class LinkedUserActivity : AppCompatActivity() {
                             updateFamilyMembersList(response.data as List<FamilyMembersBean>)
                         }
                     } else {
+                        hide()
                         Toast.makeText(this@LinkedUserActivity, response.msg, Toast.LENGTH_SHORT).show()
                     }
                 }
@@ -264,11 +265,18 @@ class LinkedUserActivity : AppCompatActivity() {
                 e.printStackTrace()
                 withContext(Dispatchers.Main) {
                     binding.swipeRefresh.isRefreshing = false
+                    hide()
                     Toast.makeText(this@LinkedUserActivity, "网络请求失败", Toast.LENGTH_SHORT).show()
                 }
             }
         }
     }
+    private fun hide() {
+        binding.searchLayout.visibility = View.GONE
+        binding.rvLinkedUser.visibility = View.GONE
+        binding.butting?.visibility = View.GONE
+        binding.layoutNoPermission?.visibility = View.VISIBLE
+    }
 
     private fun updateDeviceUserList(deviceUserList: List<DeviceUserBean>) {
         fullUserList.clear()
diff --git a/app/src/main/java/com/ckkj/defense_device/liveVideo/VoiceSettingsActivity.kt b/app/src/main/java/com/ckkj/defense_device/liveVideo/VoiceSettingsActivity.kt
index e07ecef..68f2261 100644
--- a/app/src/main/java/com/ckkj/defense_device/liveVideo/VoiceSettingsActivity.kt
+++ b/app/src/main/java/com/ckkj/defense_device/liveVideo/VoiceSettingsActivity.kt
@@ -79,29 +79,31 @@ class VoiceSettingsActivity : AppCompatActivity() {
     private fun updateDeviceAlertAudio() {
         deviceId?.let { id ->
             val newAlertAudio = if (binding.swWarningVoice.isChecked) "1" else "0"
-            // 只有状态发生变化时才请求
-            if (newAlertAudio != originalAlertAudio) {
-                CoroutineScope(Dispatchers.IO).launch {
-                    try {
-                        val deviceBean = DeviceBean(id = id, alertAudio = newAlertAudio)
-                        val response = apiService.updateDeviceInfo(deviceBean)
-                        withContext(Dispatchers.Main) {
-                            if (response.code == 200 && response.data != null) {
-                                Toast.makeText(this@VoiceSettingsActivity, "修改成功", Toast.LENGTH_SHORT).show()
-                            } else {
+            // 点击返回时总是触发网络请求
+            CoroutineScope(Dispatchers.IO).launch {
+                try {
+                    val deviceBean = DeviceBean(id = id, alertAudio = newAlertAudio)
+                    val response = apiService.updateDeviceInfo(deviceBean)
+                    withContext(Dispatchers.Main) {
+                        if (response.code == 200 && response.data != null) {
+                            Toast.makeText(this@VoiceSettingsActivity, "修改成功", Toast.LENGTH_SHORT).show()
+                        } else {
+                            // 仅在状态实际发生变化时才显示错误提示
+                            if (newAlertAudio != originalAlertAudio) {
                                 Toast.makeText(this@VoiceSettingsActivity, response.msg, Toast.LENGTH_SHORT).show()
                             }
-                            finish()
                         }
-                    } catch (e: Exception) {
-                        withContext(Dispatchers.Main) {
+                        finish()
+                    }
+                } catch (e: Exception) {
+                    withContext(Dispatchers.Main) {
+                        // 仅在状态实际发生变化时才显示失败提示
+                        if (newAlertAudio != originalAlertAudio) {
                             Toast.makeText(this@VoiceSettingsActivity, "修改失败", Toast.LENGTH_SHORT).show()
-                            finish()
                         }
+                        finish()
                     }
                 }
-            } else {
-                finish()
             }
         }
     }
diff --git a/app/src/main/java/com/ckkj/defense_device/login/LoginActivity.kt b/app/src/main/java/com/ckkj/defense_device/login/LoginActivity.kt
index a3deaad..b1ebe55 100644
--- a/app/src/main/java/com/ckkj/defense_device/login/LoginActivity.kt
+++ b/app/src/main/java/com/ckkj/defense_device/login/LoginActivity.kt
@@ -5,6 +5,7 @@ import android.graphics.Color
 import android.graphics.drawable.GradientDrawable
 import android.os.Bundle
 import android.os.CountDownTimer
+import android.util.Log
 import android.view.View
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
@@ -194,6 +195,7 @@ class LoginActivity : AppCompatActivity() {
             try {
                 val response = RetrofitNetwork.getNetworkService().getCode(phone)
                 withContext(Dispatchers.Main) {
+                    Log.d("VerificationCode", "code = ${response.code}, msg = ${response.msg}")
                     if (response.code == 200) {
                         Toast.makeText(this@LoginActivity, getString(R.string.code_sent_to, phone), Toast.LENGTH_SHORT).show()
                         startCountDown()
diff --git a/app/src/main/res/layout/linked_user_activity.xml b/app/src/main/res/layout/linked_user_activity.xml
index 77fe971..8f2e129 100644
--- a/app/src/main/res/layout/linked_user_activity.xml
+++ b/app/src/main/res/layout/linked_user_activity.xml
@@ -35,60 +35,91 @@
             android:textStyle="bold" />
     </LinearLayout>
 
-    <!-- 搜索区域 -->
     <LinearLayout
-        android:id="@+id/searchLayout"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="@color/white"
-        android:paddingHorizontal="16dp"
-        android:paddingVertical="12dp"
-        android:layout_marginTop="8dp">
-
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="40dp"
-            android:background="@drawable/bg_user_manage"
-            android:gravity="center_vertical"
-            android:paddingHorizontal="16dp">
-
-            <ImageView
-                android:layout_width="18dp"
-                android:layout_height="18dp"
-                android:src="@mipmap/search"
-                android:layout_marginRight="8dp"/>
-
-            <EditText
-                android:id="@+id/etSearch"
-                android:layout_width="match_parent"
-                android:layout_height="40dp"
-                android:background="@null"
-                android:hint="@string/search_preset_text"
-                android:textColorHint="@color/gray"
-                android:textColor="@color/black"
-                android:textSize="14sp"
-                android:inputType="text"
-                android:imeOptions="actionSearch"
-                android:singleLine="true"/>
-        </LinearLayout>
-    </LinearLayout>
-    <!-- 列表区域 -->
-    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-        android:id="@+id/swipeRefresh"
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:layout_weight="1">
-        <com.yanzhenjie.recyclerview.SwipeRecyclerView
-            android:id="@+id/rvLinkedUser"
+        android:layout_weight="1"
+        android:orientation="vertical">
+
+        <!-- 搜索区域 -->
+        <LinearLayout
+            android:id="@+id/searchLayout"
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@color/white"
             android:paddingHorizontal="16dp"
-            android:paddingTop="8dp"
-            android:paddingBottom="16dp"/>
-    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+            android:paddingVertical="12dp"
+            android:layout_marginTop="8dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="40dp"
+                android:background="@drawable/bg_user_manage"
+                android:gravity="center_vertical"
+                android:paddingHorizontal="16dp">
+
+                <ImageView
+                    android:layout_width="18dp"
+                    android:layout_height="18dp"
+                    android:src="@mipmap/search"
+                    android:layout_marginRight="8dp"/>
+
+                <EditText
+                    android:id="@+id/etSearch"
+                    android:layout_width="match_parent"
+                    android:layout_height="40dp"
+                    android:background="@null"
+                    android:hint="@string/search_preset_text"
+                    android:textColorHint="@color/gray"
+                    android:textColor="@color/black"
+                    android:textSize="14sp"
+                    android:inputType="text"
+                    android:imeOptions="actionSearch"
+                    android:singleLine="true"/>
+            </LinearLayout>
+        </LinearLayout>
+
+        <!-- 内容区域 -->
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1">
+
+            <!-- 列表 -->
+            <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+                android:id="@+id/swipeRefresh"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent">
+
+                <com.yanzhenjie.recyclerview.SwipeRecyclerView
+                    android:id="@+id/rvLinkedUser"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"/>
+            </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+            <!-- 空页面 -->
+            <LinearLayout
+                android:id="@+id/layoutNoPermission"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:gravity="center"
+                android:orientation="vertical"
+                android:visibility="gone">
+
+                <ImageView
+                    android:layout_width="244dp"
+                    android:layout_height="131dp"
+                    android:src="@mipmap/default_page"/>
+
+            </LinearLayout>
+
+        </FrameLayout>
+
+    </LinearLayout>
 
     <!-- 底部按钮 -->
     <LinearLayout
+        android:id="@+id/butting"
         android:orientation="vertical"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"