feat(flutter): 移除原生静态开屏

android/app/src/main/res/drawable-v21/launch_background.xml

@@ -3,9 +3,4 @@
 
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:drawable="@color/splash_background" />
-    <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@drawable/splash_icon" />
-    </item>
 </layer-list>

android/app/src/main/res/drawable-v31/launch_background.xml

@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Author: fruit.com.cn -->
-<!-- Android 12 already shows the icon in the system splash. This layer stays
-     the same color so the icon is not drawn a second time. -->
 
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:drawable="@color/splash_background" />

android/app/src/main/res/drawable/launch_background.xml

@@ -3,9 +3,4 @@
 
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:drawable="@color/splash_background" />
-    <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@drawable/splash_icon" />
-    </item>
 </layer-list>

android/app/src/main/res/drawable/splash_transparent.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Author: fruit.com.cn -->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@android:color/transparent" />
+</shape>

android/app/src/main/res/values-night-v31/styles.xml

@@ -5,7 +5,6 @@
     <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
         <item name="android:windowBackground">@drawable/launch_background</item>
         <item name="android:windowSplashScreenBackground">@color/splash_background</item>
-        <item name="android:windowSplashScreenAnimatedIcon">@drawable/android12splash</item>
-        <item name="android:windowSplashScreenIconBackgroundColor">@color/splash_background</item>
+        <item name="android:windowSplashScreenAnimatedIcon">@drawable/splash_transparent</item>
     </style>
 </resources>

android/app/src/main/res/values-v31/styles.xml

@@ -5,7 +5,6 @@
     <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
         <item name="android:windowBackground">@drawable/launch_background</item>
         <item name="android:windowSplashScreenBackground">@color/splash_background</item>
-        <item name="android:windowSplashScreenAnimatedIcon">@drawable/android12splash</item>
-        <item name="android:windowSplashScreenIconBackgroundColor">@color/splash_background</item>
+        <item name="android:windowSplashScreenAnimatedIcon">@drawable/splash_transparent</item>
     </style>
 </resources>