优化

app/src/main/java/io/legado/app/base/BaseActivity.kt

@@ -66,10 +66,10 @@ abstract class BaseActivity<VB : ViewBinding>(
     override fun onCreate(savedInstanceState: Bundle?) {
         window.decorView.disableAutoFill()
         initTheme()
-        upBackgroundImage()
         super.onCreate(savedInstanceState)
-        setContentView(binding.root)
         setupSystemBar()
+        setContentView(binding.root)
+        upBackgroundImage()
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             findViewById<TitleBar>(R.id.title_bar)
                 ?.onMultiWindowModeChanged(isInMultiWindowMode, fullScreen)
@@ -158,7 +158,7 @@ abstract class BaseActivity<VB : ViewBinding>(
         }
     }
 
-    private fun setupSystemBar() {
+    open fun setupSystemBar() {
         if (fullScreen && !isInMultiWindow) {
             fullScreen()
         }

app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt

@@ -12,6 +12,7 @@ import io.legado.app.help.config.AppConfig
 import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.help.storage.AppWebDav
 import io.legado.app.lib.theme.accentColor
+import io.legado.app.lib.theme.backgroundColor
 import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.main.MainActivity
 import io.legado.app.utils.*
@@ -47,10 +48,16 @@ open class WelcomeActivity : BaseActivity<ActivityWelcomeBinding>() {
         if (intent.flags and Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT != 0) {
             finish()
         } else {
-            binding.root.postDelayed({ startMainActivity() }, 500)
+            binding.root.postDelayed({ startMainActivity() }, 600)
         }
     }
 
+    override fun setupSystemBar() {
+        fullScreen()
+        setStatusBarColorAuto(backgroundColor, true, fullScreen)
+        upNavigationBarColor()
+    }
+
     override fun upBackgroundImage() {
         if (getPrefBoolean(PreferKey.customWelcome)) {
             kotlin.runCatching {