Configure the splash screen for the Android editor

platform/android/java/app/config.gradle

@@ -11,7 +11,8 @@ ext.versions = [
     nexusPublishVersion: '1.3.0',
     javaVersion        : JavaVersion.VERSION_17,
     // Also update 'platform/android/detect.py#get_ndk_version()' when this is updated.
-    ndkVersion         : '23.2.8568313'
+    ndkVersion         : '23.2.8568313',
+    splashscreenVersion: '1.0.1'
 
 ]
 

platform/android/java/editor/build.gradle

@@ -10,6 +10,8 @@ dependencies {
     implementation project(":lib")
 
     implementation "androidx.window:window:1.2.0"
+    implementation "androidx.core:core-splashscreen:$versions.splashscreenVersion"
+    implementation "androidx.constraintlayout:constraintlayout:2.1.4"
 }
 
 ext {
@@ -92,6 +94,10 @@ android {
         targetSdkVersion versions.targetSdk
 
         missingDimensionStrategy 'products', 'editor'
+        manifestPlaceholders += [
+            editorAppName: "Godot Editor 4",
+            editorBuildSuffix: ""
+        ]
     }
 
     base {
@@ -124,11 +130,13 @@ android {
         dev {
             initWith debug
             applicationIdSuffix ".dev"
+            manifestPlaceholders += [editorBuildSuffix: " (dev)"]
         }
 
         debug {
             initWith release
             applicationIdSuffix ".debug"
+            manifestPlaceholders += [editorBuildSuffix: " (debug)"]
             signingConfig signingConfigs.debug
         }
 

platform/android/java/editor/src/debug/res/values/strings.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-	<string name="godot_editor_name_string">Godot Editor 4 (debug)</string>
-</resources>

platform/android/java/editor/src/dev/res/values/strings.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-	<string name="godot_editor_name_string">Godot Editor 4 (dev)</string>
-</resources>

platform/android/java/editor/src/main/AndroidManifest.xml

@@ -13,12 +13,15 @@
         android:glEsVersion="0x00030000"
         android:required="true" />
 
-    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
+    <uses-permission
+        android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
         tools:ignore="ScopedStorage" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
-        android:maxSdkVersion="29"/>
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"
-        android:maxSdkVersion="29"/>
+    <uses-permission
+        android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="29" />
+    <uses-permission
+        android:name="android.permission.READ_EXTERNAL_STORAGE"
+        android:maxSdkVersion="29" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.VIBRATE" />
@@ -26,39 +29,44 @@
     <application
         android:allowBackup="false"
         android:icon="@mipmap/icon"
-        android:label="@string/godot_editor_name_string"
-        tools:ignore="GoogleAppIndexingWarning"
-        android:theme="@style/GodotEditorTheme"
-        android:requestLegacyExternalStorage="true">
+        android:label="${editorAppName}${editorBuildSuffix}"
+        android:requestLegacyExternalStorage="true"
+        android:theme="@style/GodotEditorSplashScreenTheme"
+        tools:ignore="GoogleAppIndexingWarning">
+        <profileable
+            android:shell="true"
+            android:enabled="true"
+            tools:targetApi="29" />
 
         <activity
             android:name=".GodotEditor"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|density|keyboard|navigation|screenLayout|uiMode"
+            android:exported="true"
             android:launchMode="singleTask"
-            android:screenOrientation="userLandscape"
-            android:exported="true">
-            <layout android:defaultHeight="@dimen/editor_default_window_height"
-                android:defaultWidth="@dimen/editor_default_window_width" />
+            android:screenOrientation="userLandscape">
+            <layout
+                android:defaultWidth="@dimen/editor_default_window_width"
+                android:defaultHeight="@dimen/editor_default_window_height" />
 
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-
         <activity
             android:name=".GodotGame"
             android:configChanges="orientation|keyboardHidden|screenSize|smallestScreenSize|density|keyboard|navigation|screenLayout|uiMode"
+            android:exported="false"
             android:label="@string/godot_project_name_string"
-            android:process=":GodotGame"
             android:launchMode="singleTask"
-            android:exported="false"
+            android:process=":GodotGame"
             android:screenOrientation="userLandscape">
-            <layout android:defaultHeight="@dimen/editor_default_window_height"
-                android:defaultWidth="@dimen/editor_default_window_width" />
+            <layout
+                android:defaultWidth="@dimen/editor_default_window_width"
+                android:defaultHeight="@dimen/editor_default_window_height" />
         </activity>
-
     </application>
 
 </manifest>

platform/android/java/editor/src/main/java/org/godotengine/editor/GodotEditor.kt

@@ -38,8 +38,10 @@ import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.*
 import android.util.Log
+import android.view.View
 import android.widget.Toast
 import androidx.annotation.CallSuper
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.window.layout.WindowMetricsCalculator
 import org.godotengine.godot.GodotActivity
 import org.godotengine.godot.GodotLib
@@ -88,8 +90,13 @@ open class GodotEditor : GodotActivity() {
 	}
 
 	private val commandLineParams = ArrayList<String>()
+	private val editorLoadingIndicator: View? by lazy { findViewById(R.id.editor_loading_indicator) }
+
+	override fun getGodotAppLayout() = R.layout.godot_editor_layout
 
 	override fun onCreate(savedInstanceState: Bundle?) {
+		installSplashScreen()
+
 		// We exclude certain permissions from the set we request at startup, as they'll be
 		// requested on demand based on use-cases.
 		PermissionsUtil.requestManifestPermissions(this, setOf(Manifest.permission.RECORD_AUDIO))
@@ -121,6 +128,14 @@ open class GodotEditor : GodotActivity() {
 		}
 	}
 
+	override fun onGodotMainLoopStarted() {
+		super.onGodotMainLoopStarted()
+		runOnUiThread {
+			// Hide the loading indicator
+			editorLoadingIndicator?.visibility = View.GONE
+		}
+	}
+
 	/**
 	 * Check for project permissions to enable
 	 */

platform/android/java/editor/src/main/java/org/godotengine/editor/GodotGame.kt

@@ -34,6 +34,9 @@ package org.godotengine.editor
  * Drives the 'run project' window of the Godot Editor.
  */
 class GodotGame : GodotEditor() {
+
+	override fun getGodotAppLayout() = org.godotengine.godot.R.layout.godot_app_layout
+
 	override fun overrideOrientationRequest() = false
 
 	override fun enableLongPressGestures() = false

platform/android/java/editor/src/main/res/layout/godot_editor_layout.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	xmlns:app="http://schemas.android.com/apk/res-auto">
+
+	<FrameLayout
+		android:id="@+id/godot_fragment_container"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent" />
+
+	<ProgressBar
+		style="@android:style/Widget.Holo.ProgressBar.Large"
+		android:id="@+id/editor_loading_indicator"
+		android:layout_width="80dp"
+		android:layout_height="80dp"
+		android:indeterminate="true"
+		app:layout_constraintEnd_toEndOf="parent"
+		app:layout_constraintStart_toStartOf="parent"
+		app:layout_constraintTop_toTopOf="parent"
+		app:layout_constraintBottom_toBottomOf="parent"
+		app:layout_constraintVertical_bias="0.80"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

platform/android/java/editor/src/main/res/values/strings.xml

@@ -1,6 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-	<string name="godot_editor_name_string">Godot Editor 4</string>
-
 	<string name="denied_storage_permission_error_msg">Missing storage access permission!</string>
 </resources>

platform/android/java/editor/src/main/res/values/themes.xml

@@ -2,4 +2,10 @@
 <resources>
 	<style name="GodotEditorTheme" parent="@android:style/Theme.Black.NoTitleBar.Fullscreen">
 	</style>
+
+	<style name="GodotEditorSplashScreenTheme" parent="Theme.SplashScreen.IconBackground">
+		<!-- Set the theme of the Activity that directly follows your splash
+		screen. This is required. -->
+		<item name="postSplashScreenTheme">@style/GodotEditorTheme</item>
+	</style>
 </resources>

platform/android/java/lib/src/org/godotengine/godot/GodotActivity.kt

@@ -36,6 +36,7 @@ import android.content.pm.PackageManager
 import android.os.Bundle
 import android.util.Log
 import androidx.annotation.CallSuper
+import androidx.annotation.LayoutRes
 import androidx.fragment.app.FragmentActivity
 import org.godotengine.godot.utils.PermissionsUtil
 import org.godotengine.godot.utils.ProcessPhoenix
@@ -65,7 +66,7 @@ abstract class GodotActivity : FragmentActivity(), GodotHost {
 
 	override fun onCreate(savedInstanceState: Bundle?) {
 		super.onCreate(savedInstanceState)
-		setContentView(R.layout.godot_app_layout)
+		setContentView(getGodotAppLayout())
 
 		handleStartIntent(intent, true)
 
@@ -80,6 +81,9 @@ abstract class GodotActivity : FragmentActivity(), GodotHost {
 		}
 	}
 
+	@LayoutRes
+	protected open fun getGodotAppLayout() = R.layout.godot_app_layout
+
 	override fun onDestroy() {
 		Log.v(TAG, "Destroying Godot app...")
 		super.onDestroy()