diff --git a/app_dashboard/changelog.md b/app_dashboard/changelog.md
index 8c89f25..da1b44e 100644
--- a/app_dashboard/changelog.md
+++ b/app_dashboard/changelog.md
@@ -17,6 +17,8 @@ author:
 
 #### 更新记录
 * 修正达到重试加载链接上限之后闪退的问题
+* 美化启动画面
+* 清除冗余代码
 
 ### [1.1.0.32] - 2026.3.13
 
diff --git a/app_dashboard/src/main/AndroidManifest.xml b/app_dashboard/src/main/AndroidManifest.xml
index a6ab014..43d9413 100644
--- a/app_dashboard/src/main/AndroidManifest.xml
+++ b/app_dashboard/src/main/AndroidManifest.xml
@@ -19,7 +19,7 @@
             android:exported="false"
             android:label="@string/title_activity_settings" />
         <activity
-            android:name=".activity.BuildingDashboardActivity"
+            android:name=".activity.DashboardActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"
             android:exported="false"
             android:label="@string/title_activity_building_dashboard"
@@ -32,10 +32,6 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity
-            android:name=".activity.GalleryActivity"
-            android:configChanges="orientation|keyboardHidden|screenSize"
-            android:exported="true" />
 
         <receiver
             android:name=".BootBroadcastReceiver"
diff --git a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/BaseActivity.java b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/BaseActivity.java
deleted file mode 100644
index 2213be8..0000000
--- a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/BaseActivity.java
+++ /dev/null
@@ -1,88 +0,0 @@
-package cn.ykbox.dashboard.activity;
-
-import android.os.Build;
-import android.os.Bundle;
-import android.util.Log;
-import android.view.View;
-
-import androidx.annotation.Nullable;
-import androidx.appcompat.app.ActionBar;
-import androidx.appcompat.app.AppCompatActivity;
-
-//import cn.slackz.signageapi.PlatformFactory;
-
-public class BaseActivity extends AppCompatActivity {
-    final private String TAG = "BaseActivity";
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        hideSystemUI();
-    }
-
-    @Override
-    protected void onResume() {
-        super.onResume();
-
-        Log.d(TAG, "onResume " + this);
-//        PlatformFactory.getInstance().hideNavBar(true);
-//        PlatformFactory.getInstance().setSlideShowNavBar(false);
-//        PlatformFactory.getInstance().setSlideShowNotificationBar(false);
-        hideSystemUI();
-    }
-
-    @Override
-    protected void onPause() {
-        super.onPause();
-
-        showSystemUI();
-        Log.d(TAG, "onPause " + this);
-//        PlatformFactory.getInstance().hideNavBar(false);
-//        PlatformFactory.getInstance().setSlideShowNotificationBar(true);
-    }
-
-    @Override
-    public void onWindowFocusChanged(boolean hasFocus) {
-        super.onWindowFocusChanged(hasFocus);
-    //    if (hasFocus) {
-            hideSystemUI();
-   //     }
-    }
-
-    protected void hideSystemUI() {
-        ActionBar actionBar = getSupportActionBar();
-        if (actionBar != null) {
-            actionBar.hide();
-        }
-
-        // Enables regular immersive mode.
-        // For "lean back" mode, remove SYSTEM_UI_FLAG_IMMERSIVE.
-        // Or for "sticky immersive," replace it with SYSTEM_UI_FLAG_IMMERSIVE_STICKY
-        View decorView = getWindow().getDecorView();
-
-        decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
-
-        if (Build.VERSION.SDK_INT > 11 && Build.VERSION.SDK_INT < 19) {
-            decorView.setSystemUiVisibility(View.GONE);
-        } else if (Build.VERSION.SDK_INT >= 19) {
-            decorView.setSystemUiVisibility(
-                    View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
-                            // Set the content to appear under the system bars so that the
-                            // content doesn't resize when the system bars hide and show.
-                            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
-                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-                            // Hide the nav bar and status bar
-                            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
-                            | View.SYSTEM_UI_FLAG_FULLSCREEN);
-        }
-    }
-    // Shows the system bars by removing all the flags
-    // except for the ones that make the content appear under the system bars.
-    private void showSystemUI() {
-        View decorView = getWindow().getDecorView();
-        decorView.setSystemUiVisibility(
-                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
-                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
-    }
-}
diff --git a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/BuildingDashboardActivity.java b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/DashboardActivity.java
similarity index 95%
rename from app_dashboard/src/main/java/cn/ykbox/dashboard/activity/BuildingDashboardActivity.java
rename to app_dashboard/src/main/java/cn/ykbox/dashboard/activity/DashboardActivity.java
index 729a6c4..63af2cc 100644
--- a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/BuildingDashboardActivity.java
+++ b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/DashboardActivity.java
@@ -1,7 +1,6 @@
 package cn.ykbox.dashboard.activity;
 
 import android.app.ProgressDialog;
-import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.Bitmap;
@@ -29,11 +28,11 @@ import com.kongzue.dialogx.dialogs.TipDialog;
 import com.kongzue.dialogx.dialogs.WaitDialog;
 
 import cn.ykbox.dashboard.alarm.PowerAlarmManager;
-import cn.ykbox.dashboard.databinding.ActivityBuildingDashboardBinding;
+import cn.ykbox.dashboard.databinding.ActivityDashboardBinding;
 import cn.ykbox.dashboard.perferences.PreferenceConfiguration;
 import cn.ykbox.dashboard.serial.SerialPortDetector;
 
-public class BuildingDashboardActivity extends FullscreenActivity {
+public class DashboardActivity extends FullscreenActivity {
     private final static String TAG = "DashboardActivity";
     private static final boolean AUTO_HIDE = true;
     private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
@@ -46,7 +45,7 @@ public class BuildingDashboardActivity extends FullscreenActivity {
 
     private PowerAlarmManager powerAlarmManager;
 
-    private ActivityBuildingDashboardBinding binding;
+    private ActivityDashboardBinding binding;
     private ActivityResultLauncher<Intent> settingsLauncher;
 
     private SerialPortDetector detector;
@@ -70,7 +69,7 @@ public class BuildingDashboardActivity extends FullscreenActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
-        binding = ActivityBuildingDashboardBinding.inflate(getLayoutInflater());
+        binding = ActivityDashboardBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
 
         super.setViews(binding.webview, binding.fullscreenContentControls);
@@ -181,11 +180,11 @@ public class BuildingDashboardActivity extends FullscreenActivity {
                     if (progressDialog != null) {
                         progressDialog.dismiss();
                     }
-                    Toast.makeText(BuildingDashboardActivity.this,
+                    Toast.makeText(DashboardActivity.this,
                             "串口检测成功！\n路径: " + portPath,
                             Toast.LENGTH_LONG).show();
 
-                    PreferenceConfiguration.setSerialPortPath(BuildingDashboardActivity.this, portPath);
+                    PreferenceConfiguration.setSerialPortPath(DashboardActivity.this, portPath);
                 });
             }
 
@@ -210,7 +209,7 @@ public class BuildingDashboardActivity extends FullscreenActivity {
      * 显示检测失败的对话框
      */
     private void showDetectionFailedDialog() {
-        Toast.makeText(BuildingDashboardActivity.this,
+        Toast.makeText(DashboardActivity.this,
                 "未找到有效的串口设备，请检查设备连接后重试。",
                 Toast.LENGTH_LONG).show();
     }
@@ -358,7 +357,7 @@ public class BuildingDashboardActivity extends FullscreenActivity {
                 Log.d(TAG, "Power control preference changed: " + key);
                 runOnUiThread(() -> {
                     if (key.equals("k_power_control_mode")) {
-                        int mode = PreferenceConfiguration.getPowerControlMode(BuildingDashboardActivity.this);
+                        int mode = PreferenceConfiguration.getPowerControlMode(DashboardActivity.this);
                         powerAlarmManager.onModeChanged(mode);
                     } else {
                         // 本地时间变更
diff --git a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/FullscreenActivity.java b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/FullscreenActivity.java
index 860948a..13c77ff 100644
--- a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/FullscreenActivity.java
+++ b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/FullscreenActivity.java
@@ -22,10 +22,14 @@ public class FullscreenActivity extends AppCompatActivity {
     private static final int UI_ANIMATION_DELAY = 300;
     private final Handler mHideHandler = new Handler(Looper.myLooper());
     private View mContentView;
+    private View mControlsView;
     private final Runnable mHidePart2Runnable = new Runnable() {
         @SuppressLint("InlinedApi")
         @Override
         public void run() {
+            if(mContentView == null)
+                return;
+
             // Delayed removal of status and navigation bar
             if (Build.VERSION.SDK_INT >= 30) {
                 mContentView.getWindowInsetsController().hide(
@@ -43,7 +47,6 @@ public class FullscreenActivity extends AppCompatActivity {
             }
         }
     };
-    private View mControlsView;
     private final Runnable mShowPart2Runnable = new Runnable() {
         @Override
         public void run() {
@@ -52,7 +55,9 @@ public class FullscreenActivity extends AppCompatActivity {
             if (actionBar != null) {
                 actionBar.show();
             }
-            mControlsView.setVisibility(View.VISIBLE);
+
+            if(mControlsView != null)
+                mControlsView.setVisibility(View.VISIBLE);
         }
     };
     private boolean mVisible;
@@ -76,9 +81,8 @@ public class FullscreenActivity extends AppCompatActivity {
 //            }
 //        });
 
-        mContentView.setOnTouchListener(new View.OnTouchListener() {
-            @Override
-            public boolean onTouch(View view, MotionEvent motionEvent) {
+        if(mContentView != null) {
+            mContentView.setOnTouchListener((view, motionEvent) -> {
                 switch (motionEvent.getAction()) {
                     case MotionEvent.ACTION_DOWN:
                         toggle();
@@ -90,8 +94,8 @@ public class FullscreenActivity extends AppCompatActivity {
                         break;
                 }
                 return false;
-            }
-        });
+            });
+        }
     }
 
     @Override
@@ -120,7 +124,8 @@ public class FullscreenActivity extends AppCompatActivity {
         if (actionBar != null) {
             actionBar.hide();
         }
-        mControlsView.setVisibility(View.GONE);
+        if(mControlsView != null)
+            mControlsView.setVisibility(View.GONE);
         mVisible = false;
 
         // Schedule a runnable to remove the status and navigation bar after a delay
@@ -130,12 +135,14 @@ public class FullscreenActivity extends AppCompatActivity {
 
     private void show() {
         // Show the system bar
-        if (Build.VERSION.SDK_INT >= 30) {
-            mContentView.getWindowInsetsController().show(
-                    WindowInsets.Type.statusBars() | WindowInsets.Type.navigationBars());
-        } else {
-            mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
+        if(mContentView != null) {
+            if (Build.VERSION.SDK_INT >= 30) {
+                mContentView.getWindowInsetsController().show(
+                        WindowInsets.Type.statusBars() | WindowInsets.Type.navigationBars());
+            } else {
+                mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
+            }
         }
         mVisible = true;
 
diff --git a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/GalleryActivity.java b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/GalleryActivity.java
deleted file mode 100644
index 59756b0..0000000
--- a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/GalleryActivity.java
+++ /dev/null
@@ -1,75 +0,0 @@
-package cn.ykbox.dashboard.activity;
-
-import android.content.Context;
-import android.os.Bundle;
-import android.os.Handler;
-import android.os.SystemClock;
-import android.util.Log;
-import android.view.MotionEvent;
-
-import com.blankj.utilcode.util.ScreenUtils;
-import com.bumptech.glide.Glide;
-import com.youth.banner.adapter.BannerImageAdapter;
-import com.youth.banner.holder.BannerImageHolder;
-import com.youth.banner.indicator.CircleIndicator;
-
-import cn.ykbox.dashboard.data.BannerBean;
-import cn.ykbox.dashboard.databinding.ActivityGalleryBinding;
-
-/**
- * An example full-screen activity that shows and hides the system UI (i.e.
- * status bar and navigation/system bar) with user interaction.
- */
-public class GalleryActivity extends BaseActivity {
-
-    private ActivityGalleryBinding binding;
-    private Context mContext;
-
-    private Handler mHandler = new Handler();
-
-    private final static int CON_COUNTS = 6;// 连续点击次数
-    private final static long CON_DURATION = 1500;// 连续点击最小间隔时间
-    private static long[] CON_Hits = new long[CON_COUNTS];
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        mContext = this;
-
-        binding = ActivityGalleryBinding.inflate(getLayoutInflater());
-        setContentView(binding.getRoot());
-        binding.banner.setAdapter(new BannerImageAdapter<BannerBean>(BannerBean.getTestData()) {
-                    @Override
-                    public void onBindView(BannerImageHolder holder, BannerBean data, int position, int size) {
-                        Log.d("fullshow", "load" +  data.imageRes);
-                        Glide.with(holder.itemView)
-                                .load(data.imageRes)
-                                .into(holder.imageView);
-                    }
-                })
-                .addBannerLifecycleObserver(this)//添加生命周期观察者
-                .setIndicator(new CircleIndicator(this))
-                .setLoopTime(5000);
-    }
-
-    @Override
-    public boolean dispatchTouchEvent(MotionEvent ev) {
-        int h = ScreenUtils.getScreenHeight();
-
-        if(ev.getActionMasked() == MotionEvent.ACTION_DOWN && ev.getX() < 100 && ev.getY() > h-100)
-            finishByHits();
-        return super.dispatchTouchEvent(ev);
-    }
-
-    public void finishByHits() {
-        //每次点击时，数组向前移动一位
-        System.arraycopy(CON_Hits, 1, CON_Hits, 0, CON_Hits.length - 1);
-        //为数组最后一位赋值
-        CON_Hits[CON_Hits.length - 1] = SystemClock.uptimeMillis();
-        if (CON_Hits[0] >= (SystemClock.uptimeMillis() - CON_DURATION)) {
-            CON_Hits = new long[CON_COUNTS];//重新初始化数组
-
-            finish();
-        }
-    }
-}
\ No newline at end of file
diff --git a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/StartActivity.java b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/StartActivity.java
index 0e689fb..c128722 100644
--- a/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/StartActivity.java
+++ b/app_dashboard/src/main/java/cn/ykbox/dashboard/activity/StartActivity.java
@@ -5,34 +5,29 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.os.Handler;
 
-import androidx.activity.EdgeToEdge;
-import androidx.appcompat.app.AppCompatActivity;
-import androidx.core.graphics.Insets;
-import androidx.core.view.ViewCompat;
-import androidx.core.view.WindowInsetsCompat;
+import cn.ykbox.dashboard.databinding.ActivityDashboardBinding;
+import cn.ykbox.dashboard.databinding.ActivityStartBinding;
 
 import cn.ykbox.dashboard.R;
 
-public class StartActivity extends AppCompatActivity {
+public class StartActivity extends FullscreenActivity {
     private Context mContext;
+    private ActivityStartBinding binding;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        binding = ActivityStartBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        super.setViews(binding.flContent, null);
         super.onCreate(savedInstanceState);
 
         mContext = this;
-        EdgeToEdge.enable(this);
-        setContentView(R.layout.activity_start);
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
-            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
-            return insets;
-        });
 
         new Handler().postDelayed(new Runnable() {
             @Override
             public void run() {
-                Intent myIntent = new Intent(mContext, BuildingDashboardActivity.class);
+                Intent myIntent = new Intent(mContext, DashboardActivity.class);
                 myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                 mContext.startActivity(myIntent);
 
diff --git a/app_dashboard/src/main/java/cn/ykbox/dashboard/data/BannerBean.java b/app_dashboard/src/main/java/cn/ykbox/dashboard/data/BannerBean.java
deleted file mode 100644
index 39cdd3f..0000000
--- a/app_dashboard/src/main/java/cn/ykbox/dashboard/data/BannerBean.java
+++ /dev/null
@@ -1,36 +0,0 @@
-package cn.ykbox.dashboard.data;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import cn.ykbox.dashboard.R;
-
-public class BannerBean {
-    public Integer imageRes;
-    public String imageUrl;
-    public String title;
-    public int viewType;
-
-    public BannerBean(Integer imageRes, String title, int viewType) {
-        this.imageRes = imageRes;
-        this.title = title;
-        this.viewType = viewType;
-    }
-
-    public BannerBean(String imageUrl, String title, int viewType) {
-        this.imageUrl = imageUrl;
-        this.title = title;
-        this.viewType = viewType;
-    }
-
-    public static List<BannerBean> getTestData() {
-        List<BannerBean> list = new ArrayList<>();
-        list.add(new BannerBean(R.drawable.image1, "第3代无线智能中控", 1));
-        list.add(new BannerBean(R.drawable.image2, "智慧班牌", 3));
-        list.add(new BannerBean(R.drawable.image3, "无线话筒", 3));
-        list.add(new BannerBean(R.drawable.image4, "可移动式智能讲桌", 1));
-        list.add(new BannerBean(R.drawable.image5, "TD2+智慧屏集成讲桌", 1));
-        list.add(new BannerBean(R.drawable.image6, "TD5+智慧屏集成讲台", 3));
-        return list;
-    }
-}
diff --git a/app_dashboard/src/main/res/drawable/image1.jpg b/app_dashboard/src/main/res/drawable/image1.jpg
deleted file mode 100644
index 53e92ac..0000000
Binary files a/app_dashboard/src/main/res/drawable/image1.jpg and /dev/null differ
diff --git a/app_dashboard/src/main/res/drawable/image2.jpg b/app_dashboard/src/main/res/drawable/image2.jpg
deleted file mode 100644
index d0d0d8c..0000000
Binary files a/app_dashboard/src/main/res/drawable/image2.jpg and /dev/null differ
diff --git a/app_dashboard/src/main/res/drawable/image3.jpg b/app_dashboard/src/main/res/drawable/image3.jpg
deleted file mode 100644
index 0ead079..0000000
Binary files a/app_dashboard/src/main/res/drawable/image3.jpg and /dev/null differ
diff --git a/app_dashboard/src/main/res/drawable/image4.jpg b/app_dashboard/src/main/res/drawable/image4.jpg
deleted file mode 100644
index c322649..0000000
Binary files a/app_dashboard/src/main/res/drawable/image4.jpg and /dev/null differ
diff --git a/app_dashboard/src/main/res/drawable/image5.jpg b/app_dashboard/src/main/res/drawable/image5.jpg
deleted file mode 100644
index 824a794..0000000
Binary files a/app_dashboard/src/main/res/drawable/image5.jpg and /dev/null differ
diff --git a/app_dashboard/src/main/res/drawable/image6.jpg b/app_dashboard/src/main/res/drawable/image6.jpg
deleted file mode 100644
index 536af41..0000000
Binary files a/app_dashboard/src/main/res/drawable/image6.jpg and /dev/null differ
diff --git a/app_dashboard/src/main/res/drawable/splash.png b/app_dashboard/src/main/res/drawable/splash.png
new file mode 100644
index 0000000..a2163fd
Binary files /dev/null and b/app_dashboard/src/main/res/drawable/splash.png differ
diff --git a/app_dashboard/src/main/res/layout/activity_building_dashboard.xml b/app_dashboard/src/main/res/layout/activity_dashboard.xml
similarity index 97%
rename from app_dashboard/src/main/res/layout/activity_building_dashboard.xml
rename to app_dashboard/src/main/res/layout/activity_dashboard.xml
index 7d938e9..2d69cbe 100644
--- a/app_dashboard/src/main/res/layout/activity_building_dashboard.xml
+++ b/app_dashboard/src/main/res/layout/activity_dashboard.xml
@@ -5,7 +5,7 @@
     android:layout_height="match_parent"
     android:background="?attr/fullscreenBackgroundColor"
     android:theme="@style/ThemeOverlay.DashBoardClient.FullscreenContainer"
-    tools:context=".BuildingDashboardActivity">
+    tools:context=".activity.DashboardActivity">
 
     <!-- The primary full-screen view. This can be replaced with whatever view
          is needed to present your content, e.g. VideoView, SurfaceView,
diff --git a/app_dashboard/src/main/res/layout/activity_start.xml b/app_dashboard/src/main/res/layout/activity_start.xml
index 934d3cd..33540aa 100644
--- a/app_dashboard/src/main/res/layout/activity_start.xml
+++ b/app_dashboard/src/main/res/layout/activity_start.xml
@@ -5,14 +5,12 @@
     android:id="@+id/main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".StartActivity">
+    android:background="@drawable/splash"
+    tools:context=".activity.StartActivity">
 
-    <TextView
+    <FrameLayout
+        android:id="@+id/fl_content"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="center"
-        android:text="启动中，请稍后..."
-        android:textSize="30sp">
-    </TextView>
+        android:layout_height="match_parent"/>
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file