refactor(activity): 优化启动页跳转延迟及子设备页面稳定性，修复导航栏闪烁问题

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -1,15 +1,13 @@
 *.iml
 .gradle
 /local.properties
-/.idea/caches
+/.idea/
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
 .DS_Store
 /build
 /captures
 .externalNativeBuild
 .cxx
 local.properties
+.claude/
+app/debug/
+app/release/

.idea/.gitignore

@@ -1,3 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml

.idea/AndroidProjectSystem.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="AndroidProjectSystem">
-    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
-  </component>
-</project>

.idea/compiler.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="21" />
-  </component>
-</project>

.idea/deploymentTargetSelector.xml

@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="deploymentTargetSelector">
-    <selectionStates>
-      <SelectionState runConfigName="app">
-        <option name="selectionMode" value="DROPDOWN" />
-        <DropdownSelection timestamp="2026-03-16T07:12:10.978585600Z">
-          <Target type="DEFAULT_BOOT">
-            <handle>
-              <DeviceId pluginId="Default" identifier="serial=192.168.1.115:5555;connection=8c23341a" />
-            </handle>
-          </Target>
-        </DropdownSelection>
-        <DialogSelection />
-      </SelectionState>
-    </selectionStates>
-  </component>
-</project>

.idea/deviceManager.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="DeviceTable">
-    <option name="columnSorters">
-      <list>
-        <ColumnSorterState>
-          <option name="column" value="Name" />
-          <option name="order" value="ASCENDING" />
-        </ColumnSorterState>
-      </list>
-    </option>
-  </component>
-</project>

.idea/gradle.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleMigrationSettings" migrationVersion="1" />
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="testRunner" value="CHOOSE_PER_TEST" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

.idea/material_theme_project_new.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="MaterialThemeProjectNewConfig">
-    <option name="metadata">
-      <MTProjectMetadataState>
-        <option name="migrated" value="true" />
-        <option name="pristineConfig" value="false" />
-        <option name="userId" value="4ab8791:19ce5d9ffb1:-7ffe" />
-      </MTProjectMetadataState>
-    </option>
-  </component>
-</project>

.idea/migrations.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectMigrations">
-    <option name="MigrateToGradleLocalJavaHome">
-      <set>
-        <option value="$PROJECT_DIR$" />
-      </set>
-    </option>
-  </component>
-</project>

.idea/misc.xml

@@ -1,9 +0,0 @@
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

.idea/runConfigurations.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="com.intellij.execution.junit.AbstractAllInDirectoryConfigurationProducer" />
-        <option value="com.intellij.execution.junit.AllInPackageConfigurationProducer" />
-        <option value="com.intellij.execution.junit.PatternConfigurationProducer" />
-        <option value="com.intellij.execution.junit.TestInClassConfigurationProducer" />
-        <option value="com.intellij.execution.junit.UniqueIdConfigurationProducer" />
-        <option value="com.intellij.execution.junit.testDiscovery.JUnitTestDiscoveryConfigurationProducer" />
-        <option value="org.jetbrains.kotlin.idea.junit.KotlinJUnitRunConfigurationProducer" />
-        <option value="org.jetbrains.kotlin.idea.junit.KotlinPatternConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

.idea/vcs.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="$PROJECT_DIR$" vcs="Git" />
-  </component>
-</project>

app/src/main/AndroidManifest.xml

@@ -45,7 +45,6 @@
         <activity
             android:name=".ui.InitActivity"
             android:exported="true"
-            android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -54,24 +53,29 @@
             </intent-filter>
         </activity>
         <activity android:name=".ui.HomeActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
 
         <activity
             android:name=".ui.SelectDishActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:launchMode="singleTask"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
         <activity
             android:name=".ui.PrepareCookActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
         <activity
             android:name=".ui.DishSamplingActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
         <activity
             android:name=".ui.SamplingListActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:launchMode="singleTask"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
@@ -86,19 +90,26 @@
 <!--            tools:ignore="DiscouragedApi,LockedOrientationActivity" />-->
         <activity
             android:name=".ui.FoodSearchActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
-        <activity android:name="com.shuwei.dish.match.ui.DeviceConfigActivity" />
+        <activity android:name="com.shuwei.dish.match.ui.DeviceConfigActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash" />
         <activity android:name="com.shuwei.dish.match.ui.SettingActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
-        <activity android:name="com.shuwei.dish.match.ui.SubmitFoodActivity" />
+        <activity android:name="com.shuwei.dish.match.ui.SubmitFoodActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash" />
         <activity
             android:name="com.shuwei.dish.match.ui.MasterScaleActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
             android:screenOrientation="portrait"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
         <activity
             android:name="com.shuwei.dish.match.ui.SlaveActivity"
+            android:theme="@style/Theme.DishMatch.NoSplash"
+            android:launchMode="singleTask"
             android:screenOrientation="landscape"
             tools:ignore="DiscouragedApi,LockedOrientationActivity" />
 

app/src/main/java/com/shuwei/dish/match/base/BaseActivity.kt

@@ -1,6 +1,7 @@
 package com.shuwei.dish.match.base
 
 import android.content.Intent
+import android.content.pm.ActivityInfo
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
@@ -43,9 +44,16 @@ open class BaseActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        // 提前隐藏系统栏，避免窗口创建时导航栏闪烁
+        hideSystemBars()
+        // 主设备竖屏，子设备横屏
+        requestedOrientation = if (GlobalData.deviceRole == DeviceRole.MASTER)
+            ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+        else
+            ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
         ActivityManager.addActivity(this)
         binding = ActivityBaseBinding.inflate(layoutInflater)
-        if (this !is InitActivity) {
+        if (this !is InitActivity || GlobalData.deviceRole == DeviceRole.SLAVE) {
             binding.root.setBackgroundColor(ContextCompat.getColor(this, R.color.bg_color))
         }
         setContentView(binding.root)
@@ -129,7 +137,7 @@ open class BaseActivity : AppCompatActivity() {
         binding.tvLeftTime.text = arr[1]
     }
 
-    private val handler = Handler(Looper.getMainLooper())
+    val handler = Handler(Looper.getMainLooper())
     private val updateTask = object : Runnable {
         override fun run() {
             updateDateTime()

app/src/main/java/com/shuwei/dish/match/base/BaseApp.kt

@@ -13,6 +13,7 @@ import com.shuwei.dish.match.ui.InitActivity.Companion.TAG
 import com.shuwei.dish.match.utils.AppUtil
 import com.shuwei.dish.match.utils.BootReceiver
 import com.shuwei.dish.match.utils.CrashHandler
+import com.shuwei.dish.match.utils.Weigher2
 
 
 class BaseApp : Application() {
@@ -28,10 +29,13 @@ class BaseApp : Application() {
         GlobalData.deviceId = deviceId
 
         // 根据设备 ID 判断角色：指定 ID 为主设备，其余为子设备
-        GlobalData.deviceRole = if (deviceId == "8fc2ab34-2137-3112-acca-f884ea8736d4") {
+        // 主设备是/dev/ttyS7，子设备是/dev/ttyS4
-            DeviceRole.MASTER
+        if (deviceId == "8fc2ab34-2137-3112-acca-f884ea8736d4") {
+            GlobalData.deviceRole = DeviceRole.MASTER
+            Weigher2.setDevicePort("/dev/ttyS7")
         } else {
-            DeviceRole.SLAVE
+            GlobalData.deviceRole = DeviceRole.SLAVE
+            Weigher2.setDevicePort("/dev/ttyS4")
         }
         Log.d(TAG, "设备角色: ${GlobalData.deviceRole}")
 

app/src/main/java/com/shuwei/dish/match/scale/MdnsDiscoveryManager.kt

@@ -4,10 +4,14 @@ import android.content.Context
 import android.net.nsd.NsdManager
 import android.net.nsd.NsdServiceInfo
 import android.util.Log
+import java.util.LinkedList
 
 /**
  * mDNS 设备发现管理器（仅主设备运行）
  * 持续扫描局域网，发现或丢失 DishMatch 子设备时通过回调通知连接管理器
+ *
+ * 注意：Android NsdManager.resolveService 不支持并发调用，多台子设备同时被发现时
+ * 会报 FAILURE_ALREADY_ACTIVE(3) 导致解析失败。此处使用串行队列逐一解析。
  */
 class MdnsDiscoveryManager(private val context: Context) {
 
@@ -22,6 +26,11 @@ class MdnsDiscoveryManager(private val context: Context) {
     private var discoveryListener: NsdManager.DiscoveryListener? = null
     private var isDiscovering = false
 
+    /** 待解析队列，串行处理避免并发解析失败 */
+    private val resolveQueue = LinkedList<NsdServiceInfo>()
+    @Volatile
+    private var isResolving = false
+
     /**
      * 发现新设备时的回调：(deviceId, host, port)
      */
@@ -62,7 +71,7 @@ class MdnsDiscoveryManager(private val context: Context) {
                 // 只处理 DishMatch 服务
                 if (!service.serviceName.startsWith("DishMatch-")) return
                 Log.d(TAG, "发现设备: ${service.serviceName}")
-                resolveService(service)
+                enqueueResolve(service)
             }
 
             override fun onServiceLost(service: NsdServiceInfo) {
@@ -87,18 +96,45 @@ class MdnsDiscoveryManager(private val context: Context) {
         nsdManager.resolveService(service, object : NsdManager.ResolveListener {
             override fun onResolveFailed(info: NsdServiceInfo, errorCode: Int) {
                 Log.e(TAG, "解析设备地址失败: ${info.serviceName}, errorCode=$errorCode")
+                // 解析结束（失败），继续处理队列中下一个
+                processNextResolve()
             }
 
             override fun onServiceResolved(info: NsdServiceInfo) {
                 val deviceId = info.serviceName.removePrefix("DishMatch-")
-                val host = info.host?.hostAddress ?: return
+                val host = info.host?.hostAddress ?: run {
+                    processNextResolve()
+                    return
+                }
                 val port = info.port
                 Log.d(TAG, "设备地址已解析: $deviceId -> $host:$port")
                 onDeviceFound?.invoke(deviceId, host, port)
+                // 解析结束（成功），继续处理队列中下一个
+                processNextResolve()
             }
         })
     }
 
+    /** 将待解析服务加入队列，若当前无解析任务则立即开始 */
+    @Synchronized
+    private fun enqueueResolve(service: NsdServiceInfo) {
+        resolveQueue.add(service)
+        if (!isResolving) {
+            processNextResolve()
+        }
+    }
+
+    /** 从队列取出下一个服务进行解析 */
+    @Synchronized
+    private fun processNextResolve() {
+        val next = resolveQueue.poll() ?: run {
+            isResolving = false
+            return
+        }
+        isResolving = true
+        resolveService(next)
+    }
+
     /**
      * 停止扫描，在应用退出时调用
      */
@@ -112,5 +148,9 @@ class MdnsDiscoveryManager(private val context: Context) {
             }
         }
         discoveryListener = null
+        synchronized(this) {
+            resolveQueue.clear()
+            isResolving = false
+        }
     }
 }

app/src/main/java/com/shuwei/dish/match/scale/ScaleServiceManager.kt

@@ -54,6 +54,10 @@ object ScaleServiceManager {
         get() = wsServer?.onConnectionChanged
         set(value) { wsServer?.onConnectionChanged = value }
 
+    /** 当前是否有主设备连接（仅子设备使用） */
+    val isMasterConnected: Boolean
+        get() = wsServer?.isConnected == true
+
     /**
      * 启动所有秤服务，在 Application.onCreate() 中调用
      */
@@ -63,7 +67,7 @@ object ScaleServiceManager {
         Log.d(TAG, "启动秤服务, deviceId=$deviceId, role=$role")
 
         // 所有设备：启动 WebSocket 服务端 + mDNS 注册
-        wsServer = ScaleWebSocketServer(deviceId).also { it.start() }
+        wsServer = ScaleWebSocketServer(deviceId, context).also { it.start() }
         mdnsRegister = MdnsRegisterManager(context).also { it.register(deviceId) }
 
         if (role == DeviceRole.MASTER) {

app/src/main/java/com/shuwei/dish/match/scale/ScaleWebSocketServer.kt

@@ -1,7 +1,9 @@
 package com.shuwei.dish.match.scale
 
+import android.content.Context
 import android.util.Log
 import com.google.gson.Gson
+import com.shuwei.dish.match.utils.NetworkUtil
 import com.shuwei.dish.match.utils.WeightUtil
 import org.java_websocket.WebSocket
 import org.java_websocket.handshake.ClientHandshake
@@ -12,7 +14,7 @@ import java.net.InetSocketAddress
  * 秤数据 WebSocket 服务端（主设备和子设备均运行）
  * 监听 WeightUtil 回调，将本机秤数据实时推送给所有已连接的主设备客户端
  */
-class ScaleWebSocketServer(private val deviceId: String) {
+class ScaleWebSocketServer(private val deviceId: String, private val context: Context) {
 
     companion object {
         private const val TAG = "ScaleWebSocketServer"
@@ -26,6 +28,10 @@ class ScaleWebSocketServer(private val deviceId: String) {
     /** 主设备连接状态变化回调：true=已连接，false=已断开；在主线程外调用，需自行切换线程 */
     var onConnectionChanged: ((connected: Boolean) -> Unit)? = null
 
+    /** 当前是否有主设备连接 */
+    val isConnected: Boolean
+        get() = server?.connections?.isNotEmpty() == true
+
     /** 每个秤地址的最近一次推送时间，用于节流 */
     private val lastPushTime = mutableMapOf<Int, Long>()
 
@@ -53,7 +59,8 @@ class ScaleWebSocketServer(private val deviceId: String) {
                 address = address,
                 weight = weight,
                 state = state,
-                ts = now
+                ts = now,
+                ip = NetworkUtil.getLocalIpAddress(context)
             )
             latestData[address] = data
             broadcast(gson.toJson(data))

app/src/main/java/com/shuwei/dish/match/scale/UdpBroadcastReceiver.kt

@@ -47,7 +47,7 @@ class UdpBroadcastReceiver {
 
     private fun listenLoop() {
         try {
-            socket = DatagramSocket(UdpBroadcastSender.BROADCAST_PORT)
+            socket = DatagramSocket(UdpBroadcastSender.BROADCAST_PORT).also { it.broadcast = true }
             val buf = ByteArray(BUFFER_SIZE)
             while (running) {
                 val packet = DatagramPacket(buf, buf.size)

app/src/main/java/com/shuwei/dish/match/ui/InitActivity.kt

@@ -1,8 +1,15 @@
 package com.shuwei.dish.match.ui
 
 import android.annotation.SuppressLint
+import android.content.Intent
+import android.util.Log
+import android.graphics.Color
 import android.os.Bundle
-import android.provider.Settings
+import android.os.SystemClock
+import android.view.KeyEvent
+import android.view.animation.RotateAnimation
+import androidx.activity.OnBackPressedCallback
+import androidx.core.graphics.toColorInt
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
 import com.shuwei.dish.match.base.BaseActivity
@@ -11,19 +18,15 @@ import com.shuwei.dish.match.base.DeviceRole
 import com.shuwei.dish.match.base.GlobalData
 import com.shuwei.dish.match.databinding.ActivityInitBinding
 import com.shuwei.dish.match.db.AppRepository
-import com.shuwei.dish.match.http.UrlConfig
 import com.shuwei.dish.match.utils.AppUtil
-import com.shuwei.dish.match.utils.QRCodeUtil
+import com.shuwei.dish.match.utils.NetworkUtils
 import com.shuwei.dish.match.utils.SpTool
-import com.shuwei.dish.match.utils.WeightUtil
 import com.shuwei.dish.match.utils.Weigher2
-import com.shuwei.dish.match.utils.ext.dp
+import com.shuwei.dish.match.utils.WeightUtil
 import com.shuwei.dish.match.utils.ext.startActivity
-import com.shuwei.dish.match.utils.ext.toObject
 import com.shuwei.dish.match.viewmodel.AppViewModel
 import com.shuwei.dish.match.viewmodel.factory.AppFactory
 import kotlinx.coroutines.delay
-import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.launch
 
 class InitActivity : BaseActivity() {
@@ -33,10 +36,13 @@ class InitActivity : BaseActivity() {
 
     private lateinit var binding: ActivityInitBinding
     private lateinit var appViewModel: AppViewModel
+    private var startTime = 0L // 倒计时开始时间
+    private var lastNetworkCheckTime = 0L // 上次检测网络的时间
 
     @SuppressLint("HardwareIds")
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        addBackKeyListener()
         statusBarDarkFont(enable = true)
 //        useBackground(false)
         binding = ActivityInitBinding.inflate(layoutInflater)
@@ -48,55 +54,18 @@ class InitActivity : BaseActivity() {
         setHeaderBgVisible(false)
         BaseApp.appVersion = AppUtil.getAppVersionCode(this).toString()
 
-        // 获取 ANDROID_ID
-//        var androidId = Settings.Secure.getString(contentResolver, Settings.Secure.ANDROID_ID)
-//        androidId = "39a7abdd06b3c7ab"
-//        BaseApp.deviceId = androidId
-//        SpTool.put(SpTool.DEVICE_ID, androidId)
-//        BaseApp.configUrl = UrlConfig.BASE_URL
         BaseApp.canteenId = "0"
-//        // TODO:  以上保存deviceId用于临时使用，后续改为下面注释方式
-
-//        var deviceId = AppUtil.getUDID(this)
-//        Log.d(TAG, "onCreate: deviceId=$deviceId")
-////        deviceId = "39a7abdd06b3c7ab"
-//        deviceId = "3ea47dc0-3cf0-3c2f-909c-265a9a65572e"
-////        deviceId = "6ce7cd59-b875-38b2-b73d-88a570be3212"
-//
-//        BaseApp.deviceId = deviceId
-//
-//        SpTool.put(SpTool.DEVICE_ID, deviceId)
-//        val deviceConfigCache = SpTool.getString(SpTool.DEVICE_CONFIG_CACHE)
-//        val checkResult = checkConfigData(deviceConfigCache)
-//        if (checkResult.not()) {
-//            binding.ivQrCode.visible()
-//            binding.btnInit.visible()
-//            //进行初始化操作
-//            initConfig()
-//            return
-//        }
-
-//        binding.ivQrCode.invisible()
-//        binding.btnInit.invisible()
 
         initViewModel()
-        // 若有保存的串口配置则先应用（子设备串口可能与主设备不同）
+
-//        val savedPort = SpTool.getString(SpTool.SCALE_DEVICE_PORT, "")
-//        if (savedPort.isNotEmpty()) {
-//            Weigher2.setDevicePort(savedPort)
-//        }
-        // TODO: 测试不同的串口配置---------------------2、5、3
-        Weigher2.setDevicePort(
-            if (GlobalData.deviceId == "8fc2ab34-2137-3112-acca-f884ea8736d4") {
-                "/dev/ttyS7"
-            } else {
-                "/dev/ttyS4"
-            }
-        )
         WeightUtil.init()
         WeightUtil.getWeight()
         WeightUtil.startContinuousRead()
-        countDown()
+
+        initViews()
+        val dpi = resources.displayMetrics.density
+        val metrics = resources.displayMetrics.toString()
+        Log.d(TAG, "dpi=$dpi, $metrics")
     }
 
     private fun initViewModel() {
@@ -106,24 +75,27 @@ class InitActivity : BaseActivity() {
     }
 
     private fun startNextPage() {
-        // 子设备：直接进入小屏专属页面，不走原有大屏业务流程
+        lifecycleScope.launch {
-        if (GlobalData.deviceRole == DeviceRole.SLAVE) {
+            delay(2000)
-            startActivity<SlaveActivity>()
+            // 子设备：直接进入小屏专属页面，不走原有大屏业务流程
-            return
+            if (GlobalData.deviceRole == DeviceRole.SLAVE) {
-        }
+                startActivity<SlaveActivity>()
-        // 主设备：走原有路由逻辑
+                return@launch
-        val launchPageType = SpTool.getInt(SpTool.LAUNCH_PAGE_TYPE, -1)
-        when (launchPageType) {
-            0 -> {
-                startActivity<SelectDishActivity>()
             }
+            // 主设备：走原有路由逻辑
+            val launchPageType = SpTool.getInt(SpTool.LAUNCH_PAGE_TYPE, -1)
+            when (launchPageType) {
+                0 -> {
+                    startActivity<SelectDishActivity>()
+                }
 
-            1 -> {
+                1 -> {
-                goSampling()
+                    goSampling()
-            }
+                }
 
-            else -> {
+                else -> {
-                startActivity<HomeActivity>()
+                    startActivity<HomeActivity>()
+                }
             }
         }
     }
@@ -133,112 +105,152 @@ class InitActivity : BaseActivity() {
             if (it.isEmpty()) {
                 //无调料信息打开采样历史列表页面，点击设置配置调料信息
                 startActivity<SamplingListActivity>()
-//                finish()
                 return@loadSeasoning
             }
             appViewModel.countCookFood(cookMode = 1) { count ->
                 if (count > 0) {
                     //有烹饪中数据打开采样历史列表页面
                     startActivity<SamplingListActivity>()
-//                    finish()
                     return@countCookFood
                 }
                 //无烹饪数据打开新增采样页面
                 startActivity<DishSamplingActivity> {
                     putExtra(DishSamplingActivity.PAGE_FROM, DishSamplingActivity.HOME)
                 }
-//                finish()
             }
         }
     }
 
-    private fun countDown() {
-        lifecycleScope.launch {
-            flow {
-                (2 downTo 1).forEach {
-                    delay(1000)
-                    emit(it)
-                }
-            }.collect {
-                // 倒计时结束执行跳转
-                if (it == 1) {
-                    startNextPage()
-                    //保留初始化页面，不关闭
-//                    finish()
-                }
-            }
-        }
-    }
-
-//    private fun initConfig() {
-//        binding.ivQrCode.setImageBitmap(
-//            QRCodeUtil.generateQRCode(
-//                content = BaseApp.deviceId ?: "",
-//                size = 200.dp
-//            )
-//        )
-//        binding.btnInit.setOnClickListener {
-////            HttpUtil.loopGetToken = false
-////            getDeviceConfig()
-//        }
-//    }
-
-//    private fun getDeviceConfig() {
-//        val tokenUrl =
-//            "${UrlConfig.DEVICE_TOKEN}?qrcodeId=${BaseApp.deviceId}&appVersion=${BaseApp.appVersion}"
-//        HttpUtil.get(url = tokenUrl, doSuccess = { token ->
-//            Log.d(TAG, "initConfig: $token")
-//            getConfig(token.toString())
-//        }, doFailure = { code, msg ->
-//            Log.d(TAG, "initConfig: $code,$msg")
-//        })
-//    }
-
-//    private fun getConfig(token: String) {
-//        val deviceConfigUrl =
-//            "${UrlConfig.DEVICE_CONFIG}?equipmentCode=${BaseApp.deviceId}&&appVersion=${BaseApp.appVersion}"
-//        HttpUtil.get(
-//            url = deviceConfigUrl, header = mutableMapOf(
-//            "X-Access-Token" to token
-//        ), doSuccess = {
-//            Log.d(TAG, "getDeviceConfig: $it")
-//            val data = it.toJsonString()
-//            val checkResult = checkConfigData(data)
-//            if (checkResult.not()) {
-//                toast("初始化设备失败，请稍后重试")
-//                return@get
-//            }
-//            HttpUtil.loopGetToken = true
-//            SpTool.put(SpTool.DEVICE_CONFIG_CACHE, data)
-//            startActivity<HomeActivity>()
-////            finish()
-//        }, doFailure = { code, msg ->
-//            Log.d(TAG, "getDeviceConfig: $code,$msg")
-//            toast("初始化设备失败，请稍后重试，code=${code},msg=${msg}")
-//        })
-//    }
-
-    data class DeviceConfigBean(
-        var appPackageUrl: String? = null,
-        var canteenId: String? = null
-    )
-
-//    private fun checkConfigData(data: String): Boolean {
-//        if (data.isBlank()) {
-//            return false
-//        }
-//        val config = data.toObject<DeviceConfigBean?>()
-//        if (config == null) {
-//            return false
-//        }
-//        BaseApp.configUrl = config.appPackageUrl ?: ""
-//        BaseApp.canteenId = config.canteenId ?: ""
-//        return true
-//    }
-
     override fun onDestroy() {
         WeightUtil.stopContinuousRead()
         super.onDestroy()
     }
 
+
+    /**
+     * 初始化控件事件
+     */
+    private fun initViews() {
+        // 连接网络按钮点击事件
+        binding.btnConnectNetwork.setOnClickListener {
+            openNetworkSettings()
+        }
+
+        // 启动加载动画 - 持续旋转
+        startLoadingAnimation()
+    }
+
+    /**
+     * 启动加载动画 - ImageView 持续旋转
+     */
+    private fun startLoadingAnimation() {
+        val rotateAnimation = RotateAnimation(
+            0f, 360f,
+            RotateAnimation.RELATIVE_TO_SELF, 0.5f,
+            RotateAnimation.RELATIVE_TO_SELF, 0.5f
+        ).apply {
+            duration = 1200 // 旋转周期 1.2 秒
+            repeatCount = RotateAnimation.INFINITE // 无限循环
+            repeatMode = RotateAnimation.RESTART
+        }
+        binding.ivLoading.startAnimation(rotateAnimation)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        if (NetworkUtils.isNetworkConnected(this)) {
+            startNextPage()
+            return
+        }
+        startCountdown()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        // 页面不可见时停止倒计时
+        handler.removeCallbacksAndMessages(null)
+    }
+
+    /**
+     * 启动 60 秒倒计时
+     */
+    private fun startCountdown() {
+        startTime = SystemClock.elapsedRealtime()
+        lastNetworkCheckTime = 0
+//        binding.llNetwork.setBackgroundColor(Color.TRANSPARENT)
+        binding.llLoading.visibility = android.view.View.VISIBLE
+        binding.llNetworkButton.visibility = android.view.View.GONE
+        binding.tvCountdown.text = "60秒"
+        scheduleCountdown()
+    }
+
+    /**
+     * 定时更新倒计时
+     * 使用 SystemClock.elapsedRealtime() 确保精确计时
+     */
+    private fun scheduleCountdown() {
+        handler.postDelayed({
+            val elapsedTime = SystemClock.elapsedRealtime() - startTime
+            val remainingTime = 60 - (elapsedTime / 1000).toInt()
+            val currentNetworkCheckTime = (elapsedTime / 1000).toInt()
+
+            // 每 10 秒检测一次网络
+            if (currentNetworkCheckTime > 0 && currentNetworkCheckTime % 10 == 0 && currentNetworkCheckTime != lastNetworkCheckTime.toInt()) {
+                lastNetworkCheckTime = currentNetworkCheckTime.toLong()
+                checkNetworkConnection()
+            }
+
+            // 倒计时未结束，继续更新 UI
+            if (remainingTime > 0) {
+                binding.tvCountdown.text = "${remainingTime}秒"
+                scheduleCountdown()
+            } else {
+                // 倒计时结束，最后检测一次网络
+                if (NetworkUtils.isNetworkConnected(this)) {
+                    startNextPage()
+                } else {
+                    // 网络未连接，显示"连接网络"按钮
+                    showNetworkButton()
+                }
+            }
+        }, 100) // 每 100ms 检查一次，确保精确性
+    }
+
+    /**
+     * 检测网络连接
+     */
+    private fun checkNetworkConnection() {
+        if (NetworkUtils.isNetworkConnected(this)) {
+            // 网络连接成功，停止倒计时并跳转到 HomeActivity
+            handler.removeCallbacksAndMessages(null)
+            startNextPage()
+        }
+    }
+
+
+    /**
+     * 显示"连接网络"按钮
+     */
+    private fun showNetworkButton() {
+//        binding.llNetwork.setBackgroundColor("#5C77F7".toColorInt())
+        binding.llLoading.visibility = android.view.View.GONE
+        binding.llNetworkButton.visibility = android.view.View.VISIBLE
+    }
+
+    /**
+     * 打开系统网络设置页面
+     */
+    private fun openNetworkSettings() {
+        val intent = Intent(android.provider.Settings.ACTION_WIFI_SETTINGS)
+        startActivity(intent) {}
+    }
+
+    private fun addBackKeyListener() {
+        onBackPressedDispatcher.addCallback(this, object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                // 禁用返回键，不执行任何操作
+            }
+        })
+    }
+
 }

app/src/main/java/com/shuwei/dish/match/ui/SlaveActivity.kt

@@ -6,6 +6,7 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import androidx.activity.OnBackPressedCallback
 import com.shuwei.dish.match.base.BaseActivity
 import com.shuwei.dish.match.base.GlobalData
 import com.shuwei.dish.match.databinding.ActivitySlaveBinding
@@ -44,9 +45,21 @@ class SlaveActivity : BaseActivity() {
         binding.rvScaleList.itemAnimator = null  // 关闭默认动画，避免数据频繁更新时出现闪烁错乱
         binding.rvScaleList.adapter = adapter
 
-        updateMasterStatus(false)
+        updateMasterStatus(ScaleServiceManager.isMasterConnected)
         listenLocalScales()
         listenMasterConnection()
+        addBackKeyListener()
+    }
+
+    /**
+     * 禁用返回键，防止退回 InitActivity 后重复打开本页
+     */
+    private fun addBackKeyListener() {
+        onBackPressedDispatcher.addCallback(this, object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                // 禁用返回键，不执行任何操作
+            }
+        })
     }
 
     /**

app/src/main/java/com/shuwei/dish/match/utils/NetworkUtils.kt

@@ -0,0 +1,24 @@
+package com.shuwei.dish.match.utils
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+
+/**
+ * 网络连接检测工具类
+ * 提供检测设备网络连接状态的功能
+ */
+object NetworkUtils {
+
+    /**
+     * 检测设备是否连接到网络
+     * @param context 应用上下文
+     * @return true 表示已连接网络，false 表示未连接
+     */
+    fun isNetworkConnected(context: Context): Boolean {
+        val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+        val network = connectivityManager.activeNetwork ?: return false
+        val capabilities = connectivityManager.getNetworkCapabilities(network) ?: return false
+        return capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+    }
+}

app/src/main/java/com/shuwei/dish/match/utils/WeightUtil.kt

@@ -7,6 +7,7 @@ import android.util.Log
 import com.shuwei.dish.match.utils.ext.roundedOneDecimalPlace
 //import com.aithings.Weigher
 import com.wabon.wbintelligenthardwaresdk.api.SensorScale
+import java.util.concurrent.ConcurrentHashMap
 
 typealias WeightCallback = (address: Int, state: Int, weight: Double) -> Unit
 
@@ -17,8 +18,7 @@ object WeightUtil {
     const val STATE_OVER_WEIGHT = SensorScale.STATE_OVER_WEIGHT
 
     var isConnected = false
-    var weightFuncMap: MutableMap<String, WeightCallback?>? =
+    val weightFuncMap: ConcurrentHashMap<String, WeightCallback?> = ConcurrentHashMap()
-        null
 
     fun init() {
         Weigher2.init()
@@ -38,7 +38,7 @@ object WeightUtil {
                 }
                 val useWeight = (weight*1000).roundedOneDecimalPlace()
                 Log.d(TAG, "readWeight, address=$address,state=$stateStr, weight=$useWeight")
-                weightFuncMap?.forEach { (key, value) ->
+                weightFuncMap.forEach { (key, value) ->
                     value?.invoke(address, state, useWeight)
                 }
 
@@ -82,18 +82,15 @@ object WeightUtil {
         }
     }
 
-    fun removeWeightListener(weightKey: String){
+    fun removeWeightListener(weightKey: String) {
-        weightFuncMap?.remove(weightKey)
+        weightFuncMap.remove(weightKey)
     }
 
     fun addWeightListener(
         weightKey: String,
         getWeight: WeightCallback = { _, _, _ -> }
     ) {
-        if (weightFuncMap == null) {
+        weightFuncMap[weightKey] = getWeight
-            weightFuncMap = mutableMapOf()
-        }
-        weightFuncMap?.put(weightKey, getWeight)
     }
 }
 

app/src/main/res/drawable-land/bg_splash.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 横屏专用启动背景，适配子设备 800×480 屏幕 -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- 背景色铺满全屏 -->
+    <item>
+        <shape android:shape="rectangle">
+            <solid android:color="@color/bg_color"/>
+        </shape>
+    </item>
+
+    <!-- 图片居中显示，适配横屏比例 -->
+    <item
+        android:width="200dp"
+        android:height="190dp"
+        android:gravity="center">
+        <bitmap android:src="@drawable/img_init" android:scaleType="fitCenter"/>
+    </item>
+
+</layer-list>

app/src/main/res/drawable/btn_connect_network.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#4ECDC4" />
+    <corners android:radius="12dp" />
+    <stroke
+        android:width="2dp"
+        android:color="#2BA39F" />
+</shape>

app/src/main/res/drawable/ic_network_error.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="80dp"
+    android:height="80dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <!-- 网络断开的图标 -->
+    <path
+        android:fillColor="#FF6B6B"
+        android:pathData="M1,9l2,2c4.97,-4.97 13.03,-4.97 18,0l2,-2C16.93,2.93 7.08,2.93 1,9zM5,13l2,2c2.76,-2.76 7.24,-2.76 10,0l2,-2c-4.42,-4.42 -11.58,-4.42 -16,0zM9,17h6v2h-6z" />
+</vector>

app/src/main/res/drawable/loading_spinner.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="ring"
+    android:innerRadiusRatio="3"
+    android:thicknessRatio="8"
+    android:useLevel="false">
+    <gradient
+        android:type="sweep"
+        android:startColor="#FF6B6B"
+        android:centerColor="#4ECDC4"
+        android:endColor="#FF6B6B"
+        android:angle="0" />
+</shape>
+

app/src/main/res/layout-land/activity_init.xml

@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 横屏 800×480 专用布局，View ID 与 activity_init.xml 完全一致，供子设备使用 -->
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/bg_color">
+
+    <!-- 主内容区：水平居中排列加载区和网络错误区 -->
+    <LinearLayout
+        android:id="@+id/llNetwork"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="horizontal"
+        android:gravity="center">
+
+        <!-- 加载动画容器 -->
+        <LinearLayout
+            android:id="@+id/llLoading"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:gravity="center"
+            android:visibility="visible">
+
+            <!-- 加载动画 -->
+            <ImageView
+                android:id="@+id/ivLoading"
+                android:layout_width="100dp"
+                android:layout_height="100dp"
+                android:src="@drawable/loading_spinner"
+                android:contentDescription="加载中" />
+
+            <!-- 倒计时文字 -->
+            <TextView
+                android:id="@+id/tvCountdown"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="60秒"
+                android:textSize="32sp"
+                android:textColor="@color/black"
+                android:textStyle="bold"
+                android:layout_marginTop="16dp" />
+
+            <!-- 提示文字 -->
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="网络连接检测中，请稍后……"
+                android:textSize="16sp"
+                android:textColor="#555555"
+                android:layout_marginTop="10dp"
+                tools:ignore="HardcodedText" />
+
+        </LinearLayout>
+
+        <!-- 连接网络按钮容器 -->
+        <LinearLayout
+            android:id="@+id/llNetworkButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:gravity="center"
+            android:visibility="gone">
+
+            <!-- 网络错误图标 -->
+            <ImageView
+                android:layout_width="100dp"
+                android:layout_height="100dp"
+                android:src="@drawable/ic_network_error"
+                android:contentDescription="网络连接失败"
+                android:layout_marginBottom="16dp" />
+
+            <!-- 连接失败提示 -->
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="网络连接失败"
+                android:textSize="28sp"
+                android:textColor="@color/black"
+                android:textStyle="bold"
+                android:layout_marginBottom="20dp"
+                tools:ignore="HardcodedText" />
+
+            <!-- 连接网络按钮 -->
+            <Button
+                android:id="@+id/btnConnectNetwork"
+                android:layout_width="260dp"
+                android:layout_height="56dp"
+                android:text="连接网络"
+                android:textSize="20sp"
+                android:textStyle="bold"
+                android:textColor="@android:color/white"
+                android:background="@drawable/btn_connect_network"
+                tools:ignore="HardcodedText" />
+
+        </LinearLayout>
+
+    </LinearLayout>
+
+    <!-- 以下 View 在此布局中不使用，保留 ID 确保 ActivityInitBinding.bind() 不崩溃 -->
+    <TextView
+        android:id="@+id/btnInit"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:visibility="gone" />
+
+    <ImageView
+        android:id="@+id/ivQrCode"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:visibility="gone"
+        tools:ignore="ContentDescription" />
+
+</FrameLayout>

app/src/main/res/layout/activity_init.xml

@@ -1,51 +1,145 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="match_parent">
-    android:orientation="vertical">
 
-    <ImageView
+    <LinearLayout
-        android:layout_width="450dp"
+        android:layout_width="match_parent"
-        android:layout_height="430dp"
-        android:layout_marginStart="50dp"
-        android:layout_marginTop="250dp"
-        android:layout_marginEnd="50dp"
-        android:layout_gravity="center_horizontal"
-        android:src="@drawable/img_init"
-        tools:ignore="ContentDescription"
-        android:visibility="invisible"/>
-
-    <TextView
-        android:id="@+id/btnInit"
-        android:layout_width="300dp"
         android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal"
+        android:orientation="vertical">
-        android:layout_marginTop="160dp"
-        android:background="@drawable/bg_init_button"
-        android:gravity="center"
-        android:padding="10dp"
-        android:text="设备初始化"
-        android:textColor="@color/white"
-        android:textSize="30sp"
-        android:textStyle="bold"
-        tools:ignore="HardcodedText"
-        android:visibility="invisible"/>
 
-    <Space
+        <ImageView
-        android:layout_width="wrap_content"
+            android:layout_width="450dp"
-        android:layout_height="0dp"
+            android:layout_height="430dp"
-        android:layout_weight="1"/>
+            android:layout_marginStart="50dp"
+            android:layout_marginTop="250dp"
+            android:layout_marginEnd="50dp"
+            android:layout_gravity="center_horizontal"
+            android:src="@drawable/img_init"
+            tools:ignore="ContentDescription"
+            android:visibility="invisible"/>
 
-    <ImageView
+        <TextView
-        android:id="@+id/ivQrCode"
+            android:id="@+id/btnInit"
-        android:layout_width="200dp"
+            android:layout_width="300dp"
-        android:layout_height="200dp"
+            android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal|bottom"
+            android:layout_gravity="center_horizontal"
-        android:layout_marginBottom="50dp"
+            android:layout_marginTop="160dp"
-        tools:src="@mipmap/ic_logo1024"
+            android:background="@drawable/bg_init_button"
-        tools:ignore="ContentDescription"
+            android:gravity="center"
-        android:visibility="invisible"/>
+            android:padding="10dp"
+            android:text="设备初始化"
+            android:textColor="@color/white"
+            android:textSize="30sp"
+            android:textStyle="bold"
+            tools:ignore="HardcodedText"
+            android:visibility="invisible"/>
 
-</LinearLayout>
+        <Space
+            android:layout_width="wrap_content"
+            android:layout_height="0dp"
+            android:layout_weight="1"/>
+
+        <ImageView
+            android:id="@+id/ivQrCode"
+            android:layout_width="200dp"
+            android:layout_height="200dp"
+            android:layout_gravity="center_horizontal|bottom"
+            android:layout_marginBottom="50dp"
+            tools:src="@mipmap/ic_logo1024"
+            tools:ignore="ContentDescription"
+            android:visibility="invisible"/>
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/llNetwork"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:gravity="center">
+
+        <!-- Loading 动画容器 -->
+        <LinearLayout
+            android:id="@+id/llLoading"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:gravity="center"
+            android:visibility="visible"
+            android:layout_marginTop="260dp">
+
+            <!-- 加载动画 -->
+            <ImageView
+                android:id="@+id/ivLoading"
+                android:layout_width="160dp"
+                android:layout_height="160dp"
+                android:src="@drawable/loading_spinner"
+                android:contentDescription="加载中" />
+
+            <!-- 倒计时文字 -->
+            <TextView
+                android:id="@+id/tvCountdown"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="60秒"
+                android:textSize="40sp"
+                android:textColor="@color/black"
+                android:textStyle="bold"
+                android:layout_marginTop="50dp" />
+
+            <!-- 提示文字 -->
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="网络连接检测中，请稍后……"
+                android:textSize="22sp"
+                android:textColor="#555555"
+                android:layout_marginTop="20dp" />
+
+        </LinearLayout>
+
+        <!-- 连接网络按钮容器 -->
+        <LinearLayout
+            android:id="@+id/llNetworkButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:gravity="center"
+            android:visibility="gone">
+
+            <!-- 网络错误图标 -->
+            <ImageView
+                android:layout_width="140dp"
+                android:layout_height="140dp"
+                android:src="@drawable/ic_network_error"
+                android:contentDescription="网络连接失败"
+                android:layout_marginBottom="30dp" />
+
+            <!-- 连接失败提示 -->
+            <TextView
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="网络连接失败"
+                android:textSize="36sp"
+                android:textColor="@color/black"
+                android:textStyle="bold"
+                android:layout_marginBottom="40dp" />
+
+            <!-- 连接网络按钮 -->
+            <Button
+                android:id="@+id/btnConnectNetwork"
+                android:layout_width="350dp"
+                android:layout_height="70dp"
+                android:text="连接网络"
+                android:textSize="24sp"
+                android:textStyle="bold"
+                android:textColor="@android:color/white"
+                android:background="@drawable/btn_connect_network" />
+
+        </LinearLayout>
+
+    </LinearLayout>
+</FrameLayout>

app/src/main/res/values-night/themes.xml

@@ -11,6 +11,8 @@
         <item name="colorOnSecondary">@color/black</item>
         <!-- Status bar color. -->
         <item name="android:statusBarColor">@android:color/transparent</item>
+        <!-- 导航栏颜色与背景一致，避免启动时黑色闪烁；上滑 transient 导航栏由系统控制不受影响 -->
+        <item name="android:navigationBarColor">@color/bg_color</item>
         <!-- Customize your theme here. -->
 <!--        <item name="android:layout_width">828dp</item>-->
         <item name="android:fitsSystemWindows">false</item>

app/src/main/res/values/themes.xml

@@ -11,6 +11,8 @@
         <item name="colorOnSecondary">@color/black</item>
         <!-- Status bar color. -->
         <item name="android:statusBarColor">@android:color/transparent</item>
+        <!-- 导航栏颜色与背景一致，避免启动时黑色闪烁；上滑 transient 导航栏由系统控制不受影响 -->
+        <item name="android:navigationBarColor">@color/bg_color</item>
         <!-- Customize your theme here. -->
 <!--        <item name="android:layout_width">828dp</item>-->
         <item name="android:fitsSystemWindows">false</item>
@@ -19,6 +21,11 @@
 
     </style>
 
+    <!-- 非启动页主题：windowBackground 为纯色，避免 bg_splash 闪烁 -->
+    <style name="Theme.DishMatch.NoSplash" parent="Theme.DishMatch">
+        <item name="android:windowBackground">@color/bg_color</item>
+    </style>
+
     <style name="CookButtonStyle" parent="Widget.MaterialComponents.Button">
         <!-- 禁用默认背景色 -->
         <item name="backgroundTint">@null</item>