diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 437e6c4..b849d22 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -9,7 +9,7 @@
    
    <application
         android:label="211工程"
-        android:icon="@mipmap/ic_launcher">
+        android:icon="@mipmap/launcher_icon">
         <activity
             android:name=".MainActivity"
             android:launchMode="singleTop"
diff --git a/android/app/src/main/res/drawable-hdpi/splash.png b/android/app/src/main/res/drawable-hdpi/splash.png
new file mode 100644
index 0000000..d05dae6
Binary files /dev/null and b/android/app/src/main/res/drawable-hdpi/splash.png differ
diff --git a/android/app/src/main/res/drawable-mdpi/splash.png b/android/app/src/main/res/drawable-mdpi/splash.png
new file mode 100644
index 0000000..32c5daf
Binary files /dev/null and b/android/app/src/main/res/drawable-mdpi/splash.png differ
diff --git a/android/app/src/main/res/drawable-v21/background.png b/android/app/src/main/res/drawable-v21/background.png
new file mode 100644
index 0000000..4c19e86
Binary files /dev/null and b/android/app/src/main/res/drawable-v21/background.png differ
diff --git a/android/app/src/main/res/drawable-v21/launch_background.xml b/android/app/src/main/res/drawable-v21/launch_background.xml
index f74085f..3fe6b2e 100644
--- a/android/app/src/main/res/drawable-v21/launch_background.xml
+++ b/android/app/src/main/res/drawable-v21/launch_background.xml
@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="?android:colorBackground" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
+    <item>
+        <bitmap android:gravity="fill" android:src="@drawable/background"/>
+    </item>
+    <item>
+        <bitmap android:gravity="center" android:src="@drawable/splash"/>
+    </item>
+</layer-list>
\ No newline at end of file
diff --git a/android/app/src/main/res/drawable-xhdpi/splash.png b/android/app/src/main/res/drawable-xhdpi/splash.png
new file mode 100644
index 0000000..4474f0a
Binary files /dev/null and b/android/app/src/main/res/drawable-xhdpi/splash.png differ
diff --git a/android/app/src/main/res/drawable-xxhdpi/splash.png b/android/app/src/main/res/drawable-xxhdpi/splash.png
new file mode 100644
index 0000000..7466341
Binary files /dev/null and b/android/app/src/main/res/drawable-xxhdpi/splash.png differ
diff --git a/android/app/src/main/res/drawable-xxxhdpi/splash.png b/android/app/src/main/res/drawable-xxxhdpi/splash.png
new file mode 100644
index 0000000..b08387d
Binary files /dev/null and b/android/app/src/main/res/drawable-xxxhdpi/splash.png differ
diff --git a/android/app/src/main/res/drawable/background.png b/android/app/src/main/res/drawable/background.png
new file mode 100644
index 0000000..4c19e86
Binary files /dev/null and b/android/app/src/main/res/drawable/background.png differ
diff --git a/android/app/src/main/res/drawable/launch_background.xml b/android/app/src/main/res/drawable/launch_background.xml
index 304732f..3fe6b2e 100644
--- a/android/app/src/main/res/drawable/launch_background.xml
+++ b/android/app/src/main/res/drawable/launch_background.xml
@@ -1,12 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
+    <item>
+        <bitmap android:gravity="fill" android:src="@drawable/background"/>
+    </item>
+    <item>
+        <bitmap android:gravity="center" android:src="@drawable/splash"/>
+    </item>
+</layer-list>
\ No newline at end of file
diff --git a/android/app/src/main/res/mipmap-hdpi/launcher_icon.png b/android/app/src/main/res/mipmap-hdpi/launcher_icon.png
new file mode 100644
index 0000000..4cdf330
Binary files /dev/null and b/android/app/src/main/res/mipmap-hdpi/launcher_icon.png differ
diff --git a/android/app/src/main/res/mipmap-mdpi/launcher_icon.png b/android/app/src/main/res/mipmap-mdpi/launcher_icon.png
new file mode 100644
index 0000000..18bf22b
Binary files /dev/null and b/android/app/src/main/res/mipmap-mdpi/launcher_icon.png differ
diff --git a/android/app/src/main/res/mipmap-xhdpi/launcher_icon.png b/android/app/src/main/res/mipmap-xhdpi/launcher_icon.png
new file mode 100644
index 0000000..dbfc31f
Binary files /dev/null and b/android/app/src/main/res/mipmap-xhdpi/launcher_icon.png differ
diff --git a/android/app/src/main/res/mipmap-xxhdpi/launcher_icon.png b/android/app/src/main/res/mipmap-xxhdpi/launcher_icon.png
new file mode 100644
index 0000000..afc39c6
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxhdpi/launcher_icon.png differ
diff --git a/android/app/src/main/res/mipmap-xxxhdpi/launcher_icon.png b/android/app/src/main/res/mipmap-xxxhdpi/launcher_icon.png
new file mode 100644
index 0000000..ca40eb8
Binary files /dev/null and b/android/app/src/main/res/mipmap-xxxhdpi/launcher_icon.png differ
diff --git a/android/app/src/main/res/values/styles.xml b/android/app/src/main/res/values/styles.xml
index d74aa35..c8a5e60 100644
--- a/android/app/src/main/res/values/styles.xml
+++ b/android/app/src/main/res/values/styles.xml
@@ -5,6 +5,7 @@
         <!-- Show a splash screen on the activity. Automatically removed when
              Flutter draws its first frame -->
         <item name="android:windowBackground">@drawable/launch_background</item>
+        <item name="android:windowFullscreen">false</item>
     </style>
     <!-- Theme applied to the Android Window as soon as the process has started.
          This theme determines the color of the Android Window while your
@@ -15,4 +16,4 @@
     <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <item name="android:windowBackground">?android:colorBackground</item>
     </style>
-</resources>
+</resources>
\ No newline at end of file
diff --git a/ios/Runner.xcodeproj/project.pbxproj b/ios/Runner.xcodeproj/project.pbxproj
index 16ace36..0e98b8b 100644
--- a/ios/Runner.xcodeproj/project.pbxproj
+++ b/ios/Runner.xcodeproj/project.pbxproj
@@ -468,4 +468,4 @@
 /* End XCConfigurationList section */
 	};
 	rootObject = 97C146E61CF9000F007C117D /* Project object */;
-}
+}
\ No newline at end of file
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png
index dc9ada4..9f9aeac 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png
index 28c6bf0..4bddd07 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png
index 2ccbfd9..ab9d728 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png
index f091b6b..550cd27 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png
index 4cde121..fe41e9a 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png
index d0ef06e..024ef40 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png
index dcdc230..205742b 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png
index 2ccbfd9..ab9d728 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png
index c8f9ed8..ce07b45 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png
index a6d6b86..5b87c5d 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png
index a6d6b86..5b87c5d 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png
index 75b2d16..c751e71 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png
index c4df70d..ac8055e 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png
index 6a84f41..f6f2197 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png
index d0e1f58..98f68de 100644
Binary files a/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png and b/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/LaunchBackground.imageset/Contents.json b/ios/Runner/Assets.xcassets/LaunchBackground.imageset/Contents.json
new file mode 100644
index 0000000..9f447e1
--- /dev/null
+++ b/ios/Runner/Assets.xcassets/LaunchBackground.imageset/Contents.json
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "background.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/ios/Runner/Assets.xcassets/LaunchBackground.imageset/background.png b/ios/Runner/Assets.xcassets/LaunchBackground.imageset/background.png
new file mode 100644
index 0000000..4c19e86
Binary files /dev/null and b/ios/Runner/Assets.xcassets/LaunchBackground.imageset/background.png differ
diff --git a/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json b/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
index 0bedcf2..00cabce 100644
--- a/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
+++ b/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json
@@ -1,23 +1,23 @@
 {
   "images" : [
     {
-      "idiom" : "universal",
       "filename" : "LaunchImage.png",
+      "idiom" : "universal",
       "scale" : "1x"
     },
     {
-      "idiom" : "universal",
       "filename" : "LaunchImage@2x.png",
+      "idiom" : "universal",
       "scale" : "2x"
     },
     {
-      "idiom" : "universal",
       "filename" : "LaunchImage@3x.png",
+      "idiom" : "universal",
       "scale" : "3x"
     }
   ],
   "info" : {
-    "version" : 1,
-    "author" : "xcode"
+    "author" : "xcode",
+    "version" : 1
   }
 }
diff --git a/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png b/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png
index 9da19ea..32c5daf 100644
Binary files a/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png and b/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png differ
diff --git a/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png b/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png
index 9da19ea..4474f0a 100644
Binary files a/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png and b/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png differ
diff --git a/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png b/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png
index 9da19ea..7466341 100644
Binary files a/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png and b/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png differ
diff --git a/ios/Runner/Base.lproj/LaunchScreen.storyboard b/ios/Runner/Base.lproj/LaunchScreen.storyboard
index f2e259c..55a6975 100644
--- a/ios/Runner/Base.lproj/LaunchScreen.storyboard
+++ b/ios/Runner/Base.lproj/LaunchScreen.storyboard
@@ -16,13 +16,19 @@
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
-                            </imageView>
+                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleToFill" image="LaunchBackground" translatesAutoresizingMaskIntoConstraints="NO" id="tWc-Dq-wcI"/>
+                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4"></imageView>
                         </subviews>
                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <constraints>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" id="3T2-ad-Qdv"/>
+                            <constraint firstItem="tWc-Dq-wcI" firstAttribute="bottom" secondItem="Ze5-6b-2t3" secondAttribute="bottom" id="RPx-PI-7Xg"/>
+                            <constraint firstItem="tWc-Dq-wcI" firstAttribute="top" secondItem="Ze5-6b-2t3" secondAttribute="top" id="SdS-ul-q2q"/>
+                            <constraint firstAttribute="trailing" secondItem="tWc-Dq-wcI" secondAttribute="trailing" id="Swv-Gf-Rwn"/>
+                            <constraint firstAttribute="trailing" secondItem="YRO-k0-Ey4" secondAttribute="trailing" id="TQA-XW-tRk"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="bottom" secondItem="Ze5-6b-2t3" secondAttribute="bottom" id="duK-uY-Gun"/>
+                            <constraint firstItem="tWc-Dq-wcI" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" id="kV7-tw-vXt"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="top" secondItem="Ze5-6b-2t3" secondAttribute="top" id="xPn-NY-SIU"/>
                         </constraints>
                     </view>
                 </viewController>
@@ -32,6 +38,7 @@
         </scene>
     </scenes>
     <resources>
-        <image name="LaunchImage" width="168" height="185"/>
+        <image name="LaunchImage" width="500" height="500"/>
+        <image name="LaunchBackground" width="1" height="1"/>
     </resources>
-</document>
+</document>
\ No newline at end of file
diff --git a/ios/Runner/Info.plist b/ios/Runner/Info.plist
index da71201..bea97a1 100644
--- a/ios/Runner/Info.plist
+++ b/ios/Runner/Info.plist
@@ -1,45 +1,47 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>$(DEVELOPMENT_LANGUAGE)</string>
-	<key>CFBundleExecutable</key>
-	<string>$(EXECUTABLE_NAME)</string>
-	<key>CFBundleIdentifier</key>
-	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundleName</key>
-	<string>211工程</string>
-	<key>CFBundlePackageType</key>
-	<string>APPL</string>
-	<key>CFBundleShortVersionString</key>
-	<string>$(FLUTTER_BUILD_NAME)</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>$(FLUTTER_BUILD_NUMBER)</string>
-	<key>LSRequiresIPhoneOS</key>
-	<true/>
-	<key>UILaunchStoryboardName</key>
-	<string>LaunchScreen</string>
-	<key>UIMainStoryboardFile</key>
-	<string>Main</string>
-	<key>UISupportedInterfaceOrientations</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UISupportedInterfaceOrientations~ipad</key>
-	<array>
-		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationPortraitUpsideDown</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
-	</array>
-	<key>UIViewControllerBasedStatusBarAppearance</key>
-	<false/>
-</dict>
+	<dict>
+		<key>CFBundleDevelopmentRegion</key>
+		<string>$(DEVELOPMENT_LANGUAGE)</string>
+		<key>CFBundleExecutable</key>
+		<string>$(EXECUTABLE_NAME)</string>
+		<key>CFBundleIdentifier</key>
+		<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+		<key>CFBundleInfoDictionaryVersion</key>
+		<string>6.0</string>
+		<key>CFBundleName</key>
+		<string>211工程</string>
+		<key>CFBundlePackageType</key>
+		<string>APPL</string>
+		<key>CFBundleShortVersionString</key>
+		<string>$(FLUTTER_BUILD_NAME)</string>
+		<key>CFBundleSignature</key>
+		<string>????</string>
+		<key>CFBundleVersion</key>
+		<string>$(FLUTTER_BUILD_NUMBER)</string>
+		<key>LSRequiresIPhoneOS</key>
+		<true/>
+		<key>UILaunchStoryboardName</key>
+		<string>LaunchScreen</string>
+		<key>UIMainStoryboardFile</key>
+		<string>Main</string>
+		<key>UISupportedInterfaceOrientations</key>
+		<array>
+			<string>UIInterfaceOrientationPortrait</string>
+			<string>UIInterfaceOrientationLandscapeLeft</string>
+			<string>UIInterfaceOrientationLandscapeRight</string>
+		</array>
+		<key>UISupportedInterfaceOrientations~ipad</key>
+		<array>
+			<string>UIInterfaceOrientationPortrait</string>
+			<string>UIInterfaceOrientationPortraitUpsideDown</string>
+			<string>UIInterfaceOrientationLandscapeLeft</string>
+			<string>UIInterfaceOrientationLandscapeRight</string>
+		</array>
+		<key>UIViewControllerBasedStatusBarAppearance</key>
+		<false/>
+		<key>UIStatusBarHidden</key>
+		<false/>
+	</dict>
 </plist>
\ No newline at end of file
diff --git a/pubspec.lock b/pubspec.lock
index d2613d6..a7619d9 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,6 +1,20 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "3.3.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "2.3.0"
   async:
     dependency: transitive
     description:
@@ -64,6 +78,13 @@ packages:
       url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
     source: hosted
     version: "3.0.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "3.0.1"
   csslib:
     dependency: transitive
     description:
@@ -125,6 +146,13 @@ packages:
       url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
     source: hosted
     version: "2.2.1"
+  flutter_launcher_icons:
+    dependency: "direct dev"
+    description:
+      name: flutter_launcher_icons
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "0.9.2"
   flutter_layout_grid:
     dependency: transitive
     description:
@@ -146,6 +174,13 @@ packages:
       url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
     source: hosted
     version: "0.5.0"
+  flutter_native_splash:
+    dependency: "direct dev"
+    description:
+      name: flutter_native_splash
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "1.3.2"
   flutter_svg:
     dependency: transitive
     description:
@@ -184,6 +219,13 @@ packages:
       url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
     source: hosted
     version: "4.0.0"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "3.1.3"
   js:
     dependency: transitive
     description:
@@ -399,6 +441,13 @@ packages:
       url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
     source: hosted
     version: "1.3.0"
+  universal_io:
+    dependency: transitive
+    description:
+      name: universal_io
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "2.0.4"
   url_launcher:
     dependency: "direct main"
     description:
@@ -574,6 +623,13 @@ packages:
       url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
     source: hosted
     version: "5.3.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://mirrors.tuna.tsinghua.edu.cn/dart-pub/"
+    source: hosted
+    version: "3.1.0"
 sdks:
   dart: ">=2.14.0 <3.0.0"
   flutter: ">=2.5.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index c45f422..ba550c4 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -27,9 +27,25 @@ dev_dependencies:
   #   git:
   #     url: https://github.com/d1y/flutter_launcher_name
 
+  flutter_launcher_icons: ^0.9.2
+  flutter_native_splash: ^1.3.2
+
 flutter: 
   uses-material-design: true
 
 # flutter pub run flutter_launcher_name:main
 flutter_launcher_name:
   name: "211工程"
+
+# flutter pub run flutter_launcher_icons:main
+flutter_icons:
+  android: "launcher_icon"
+  ios: true
+  image_path: "design/dan211.png"
+
+# flutter pub run flutter_native_splash:create
+flutter_native_splash:
+  image: design/dan211.png
+  color: "#FF7CC1"
+  ios: true
+  android: true
\ No newline at end of file
diff --git a/web/index.html b/web/index.html
index 66745d1..8483f2f 100644
--- a/web/index.html
+++ b/web/index.html
@@ -28,8 +28,9 @@
 
   <title>dan211</title>
   <link rel="manifest" href="manifest.json">
+  <link rel="stylesheet" type="text/css" href="splash/style.css">
 </head>
-<body>
+<body style="position: fixed; inset: 0px; overflow: hidden; padding: 0px; margin: 0px; user-select: none; touch-action: none; font: 14px sans-serif; color: red;">
   <!-- This script installs service_worker.js to provide PWA functionality to
        application. For more information, see:
        https://developers.google.com/web/fundamentals/primers/service-workers -->
@@ -97,5 +98,10 @@
       loadMainDartJs();
     }
   </script>
+  <picture id="splash">
+    <source srcset="splash/img/light-1x.png 1x, splash/img/light-2x.png 2x, splash/img/light-3x.png 3x, splash/img/light-4x.png 4x" media="(prefers-color-scheme: light) or (prefers-color-scheme: no-preference)">
+    <source srcset="splash/img/dark-1x.png 1x, splash/img/dark-2x.png 2x, splash/img/dark-3x.png 3x, splash/img/dark-4x.png 4x" media="(prefers-color-scheme: dark)">
+    <img class="center" aria-hidden="true" src="splash/img/light-1x.png" />
+  </picture>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/web/splash/img/dark-1x.png b/web/splash/img/dark-1x.png
new file mode 100644
index 0000000..32c5daf
Binary files /dev/null and b/web/splash/img/dark-1x.png differ
diff --git a/web/splash/img/dark-2x.png b/web/splash/img/dark-2x.png
new file mode 100644
index 0000000..4474f0a
Binary files /dev/null and b/web/splash/img/dark-2x.png differ
diff --git a/web/splash/img/dark-3x.png b/web/splash/img/dark-3x.png
new file mode 100644
index 0000000..7466341
Binary files /dev/null and b/web/splash/img/dark-3x.png differ
diff --git a/web/splash/img/dark-4x.png b/web/splash/img/dark-4x.png
new file mode 100644
index 0000000..b08387d
Binary files /dev/null and b/web/splash/img/dark-4x.png differ
diff --git a/web/splash/img/light-1x.png b/web/splash/img/light-1x.png
new file mode 100644
index 0000000..32c5daf
Binary files /dev/null and b/web/splash/img/light-1x.png differ
diff --git a/web/splash/img/light-2x.png b/web/splash/img/light-2x.png
new file mode 100644
index 0000000..4474f0a
Binary files /dev/null and b/web/splash/img/light-2x.png differ
diff --git a/web/splash/img/light-3x.png b/web/splash/img/light-3x.png
new file mode 100644
index 0000000..7466341
Binary files /dev/null and b/web/splash/img/light-3x.png differ
diff --git a/web/splash/img/light-4x.png b/web/splash/img/light-4x.png
new file mode 100644
index 0000000..b08387d
Binary files /dev/null and b/web/splash/img/light-4x.png differ
diff --git a/web/splash/style.css b/web/splash/style.css
new file mode 100644
index 0000000..9aee986
--- /dev/null
+++ b/web/splash/style.css
@@ -0,0 +1,43 @@
+body, html {
+  margin:0;
+  height:100%;
+  background: #FF7CC1;
+  
+  background-size: 100% 100%;
+}
+
+.center {
+  margin: 0;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  -ms-transform: translate(-50%, -50%);
+  transform: translate(-50%, -50%);
+}
+
+.contain {
+  display:block;
+  width:100%; height:100%;
+  object-fit: contain;
+}
+
+.stretch {
+  display:block;
+  width:100%; height:100%;
+}
+
+.cover {
+  display:block;
+  width:100%; height:100%;
+  object-fit: cover;
+}
+
+@media (prefers-color-scheme: dark) {
+  body {
+    margin:0;
+    height:100%;
+    background: #FF7CC1;
+    
+    background-size: 100% 100%;
+  }
+}