fix: fix splashscreen issues by removing it on Android<12

Signed-off-by: Infi <infi@infi.sh>

app/build.gradle.kts

@@ -250,7 +250,7 @@ dependencies {
     implementation("androidx.documentfile:documentfile:1.0.1")
     implementation("androidx.browser:browser:1.8.0")
     implementation("androidx.webkit:webkit:1.12.1")
-    implementation("androidx.core:core-splashscreen:1.2.0-alpha02")
+    implementation("androidx.core:core-splashscreen:1.2.0-beta01")
     implementation("androidx.palette:palette-ktx:1.0.0")
 
     // Libraries used for legacy View-based UI

app/src/main/AndroidManifest.xml

@@ -69,7 +69,7 @@
             android:exported="true"
             android:configChanges="orientation|screenSize|colorMode"
             android:windowSoftInputMode="adjustResize"
-            android:theme="@style/Theme.Revolt.Starting">
+            android:theme="@style/Theme.Revolt">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/chat/revolt/activities/MainActivity.kt

@@ -10,6 +10,8 @@ import android.view.KeyEvent
 import android.view.KeyboardShortcutGroup
 import android.view.KeyboardShortcutInfo
 import android.view.Menu
+import android.view.View
+import android.view.ViewTreeObserver
 import android.widget.Toast
 import androidx.activity.compose.setContent
 import androidx.activity.viewModels
@@ -38,7 +40,6 @@ import androidx.compose.ui.graphics.toArgb
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.IntOffset
-import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.core.view.WindowCompat
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
@@ -310,12 +311,6 @@ class MainActivity : AppCompatActivity() {
         window.statusBarColor = Color.Transparent.toArgb()
         WindowCompat.setDecorFitsSystemWindows(window, false)
 
-        installSplashScreen().apply {
-            setKeepOnScreenCondition {
-                !viewModel.isReady.value
-            }
-        }
-
         RevoltAPI.hydrateFromPersistentCache()
 
         setContent {
@@ -334,6 +329,23 @@ class MainActivity : AppCompatActivity() {
                 viewModel::updateNextDestination
             )
         }
+
+        val content: View = findViewById(android.R.id.content)
+        content.viewTreeObserver.addOnPreDrawListener(
+            object : ViewTreeObserver.OnPreDrawListener {
+                override fun onPreDraw(): Boolean {
+                    // Check whether the initial data is ready.
+                    return if (viewModel.isReady.value) {
+                        // The content is ready. Start drawing.
+                        content.viewTreeObserver.removeOnPreDrawListener(this)
+                        true
+                    } else {
+                        // The content isn't ready. Suspend.
+                        false
+                    }
+                }
+            }
+        )
     }
 
     override fun onProvideKeyboardShortcuts(

app/src/main/res/values-v33/themes.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.Revolt.Starting" parent="Theme.SplashScreen">
+        <item name="windowSplashScreenAnimatedIcon">@drawable/ic_launcher_foreground</item>
+        <item name="windowSplashScreenBackground">@color/splashscreen_background</item>
+        <item name="android:windowSplashScreenBehavior">icon_preferred</item>
+        <item name="postSplashScreenTheme">@style/Theme.Revolt</item>
+    </style>
+</resources>

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

@@ -7,10 +7,11 @@
         <item name="textAppearanceTitleLarge">@style/TextAppearance.Revolt.TitleLarge</item>
     </style>
 
-    <style name="Theme.Revolt.Starting" parent="Theme.SplashScreen" tools:targetApi="tiramisu">
+    <!-- We temporarily don't use a dedicated splash screen theme due to Samsung specific issues.
-        <item name="android:windowSplashScreenAnimatedIcon">@drawable/ic_launcher_foreground</item>
+         This theme is unused. -->
-        <item name="android:windowSplashScreenBackground">@color/splashscreen_background</item>
+    <style name="Theme.Revolt.Starting" parent="Theme.SplashScreen">
-        <item name="android:windowSplashScreenBehavior">icon_preferred</item>
+        <item name="windowSplashScreenAnimatedIcon">@drawable/ic_launcher_foreground</item>
+        <item name="windowSplashScreenBackground">@color/splashscreen_background</item>
         <item name="postSplashScreenTheme">@style/Theme.Revolt</item>
     </style>