Add Android 10 support

src/KenjinxAndroid/app/build.gradle

@@ -9,7 +9,7 @@ android {
 
     defaultConfig {
         applicationId "org.kenjinx.android"
-        minSdk 30
+        minSdk 29
         //noinspection EditedTargetSdkVersion
         targetSdk 36
         versionCode 20004

src/KenjinxAndroid/app/src/main/AndroidManifest.xml

@@ -28,6 +28,7 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.KenjinxAndroid"
         android:largeHeap="true"
+        android:requestLegacyExternalStorage="true"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"

src/KenjinxAndroid/app/src/main/java/org/kenjinx/android/GameHost.kt

@@ -2,6 +2,7 @@ package org.kenjinx.android
 
 import android.annotation.SuppressLint
 import android.content.Context
+import android.os.Build
 import android.os.Handler
 import android.os.Looper
 import android.util.Log
@@ -108,7 +109,9 @@ class GameHost(context: Context?, private val mainViewModel: MainViewModel) : Su
 
         // NO graphicsRendererSetSize here – we set it via the stabilizer!
 
-        NativeHelpers.instance.setIsInitialOrientationFlipped(mainViewModel.activity.display?.rotation == 3)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            NativeHelpers.instance.setIsInitialOrientationFlipped(mainViewModel.activity.display?.rotation == 3)
+        }
 
         _guestThread = thread(start = true, name = "KenjinxGuest") {
             runGame()

src/KenjinxAndroid/app/src/main/java/org/kenjinx/android/MainActivity.kt

@@ -7,6 +7,7 @@ import android.view.KeyEvent
 import android.view.MotionEvent
 import android.view.WindowManager
 import android.content.Intent
+import android.os.Build
 import android.os.Handler
 import android.os.Looper
 import androidx.activity.compose.setContent
@@ -101,9 +102,15 @@ class MainActivity : BaseActivity() {
         motionSensorManager = MotionSensorManager(this)
         Thread.setDefaultUncaughtExceptionHandler(crashHandler)
 
-        if (!Environment.isExternalStorageManager()
+        if (if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                !Environment.isExternalStorageManager()
+            } else {
+                !Environment.isExternalStorageLegacy()
+            }
         ) {
-            storageHelper?.storage?.requestFullStorageAccess()
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                storageHelper?.storage?.requestFullStorageAccess()
+            }
         }
 
         AppPath = this.getExternalFilesDir(null)!!.absolutePath