Show a toast when per-game settings are active

app/src/main/java/emu/skyline/EmulationActivity.kt

@@ -22,6 +22,7 @@ import android.os.*
 import android.util.Log
 import android.util.Rational
 import android.view.*
+import android.widget.Toast
 import androidx.activity.OnBackPressedCallback
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.getSystemService
@@ -309,6 +310,9 @@ class EmulationActivity : AppCompatActivity(), SurfaceHolder.Callback, View.OnTo
         force60HzRefreshRate(!emulationSettings.maxRefreshRate)
         getSystemService<DisplayManager>()?.registerDisplayListener(this, null)
 
+        if (!emulationSettings.isGlobal && emulationSettings.useCustomSettings)
+            Toast.makeText(this, getString(R.string.per_game_settings_active_message), Toast.LENGTH_SHORT).show()
+
         binding.gameView.setOnTouchListener(this)
 
         // Hide on screen controls when first controller is not set

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

@@ -257,4 +257,5 @@
     <!--suppress AndroidLintUnusedResources -->
     <string name="expand_button_title" tools:override="true">Expand</string>
     <string name="undo">Undo</string>
+    <string name="per_game_settings_active_message">Per-game settings are active</string>
 </resources>