Android: Add an update notification about controller bindings

android/app/src/main/java/com/github/stenzek/duckstation/MainActivity.java

@@ -179,6 +179,7 @@ public class MainActivity extends AppCompatActivity {
 
         AndroidHostInterface.getInstance().setContext(this);
         mGameList.refresh(false, false, this);
+        UpdateNotes.displayUpdateNotes(this);
     }
 
     private void startAddGameDirectory() {

android/app/src/main/java/com/github/stenzek/duckstation/UpdateNotes.java

@@ -0,0 +1,54 @@
+package com.github.stenzek.duckstation;
+
+import android.app.AlertDialog;
+import android.content.Intent;
+import android.content.SharedPreferences;
+
+import androidx.preference.PreferenceManager;
+
+public class UpdateNotes {
+    private static final int VERSION_CONTROLLER_UPDATE = 1;
+    private static final int CURRENT_VERSION = VERSION_CONTROLLER_UPDATE;
+
+    private static final String CONFIG_KEY = "Main/UpdateNotesVersion";
+
+    private static int getVersion(MainActivity parent) {
+        try {
+            final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(parent);
+            return sp.getInt(CONFIG_KEY, 0);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return CURRENT_VERSION;
+        }
+    }
+
+    public static void setVersion(MainActivity parent, int version) {
+        final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(parent);
+        sp.edit().putInt(CONFIG_KEY, version).commit();
+    }
+
+    public static boolean displayUpdateNotes(MainActivity parent) {
+        final int version = getVersion(parent);
+
+        if (version < VERSION_CONTROLLER_UPDATE ) {
+            displayControllerUpdateNotes(parent);
+            setVersion(parent, VERSION_CONTROLLER_UPDATE);
+            return true;
+        }
+
+        return false;
+    }
+
+    public static void displayControllerUpdateNotes(MainActivity parent) {
+        final AlertDialog.Builder builder = new AlertDialog.Builder(parent);
+        builder.setTitle(R.string.update_notes_title);
+        builder.setMessage(R.string.update_notes_message_version_controller_update);
+        builder.setPositiveButton(R.string.main_activity_yes, (dialog, which) -> {
+            dialog.dismiss();
+            Intent intent = new Intent(parent, ControllerSettingsActivity.class);
+            parent.startActivity(intent);
+        });
+        builder.setNegativeButton(R.string.main_activity_no, (dialog, which) -> dialog.dismiss());
+        builder.create().show();
+    }
+}

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

@@ -312,4 +312,6 @@
     <string name="memory_card_editor_import_card_failed">Failed to import card \'%s\'. It may not be a supported format.</string>
     <string name="memory_card_editor_import_card_success">Imported card \'%s\'.</string>
     <string name="menu_game_list_entry_choose_cover_image">Choose Cover Image</string>
+    <string name="update_notes_title">Update Notes</string>
+    <string name="update_notes_message_version_controller_update">This DuckStation update includes support for multiple controllers, and binding devices such as keyboards/volume buttons.\n\nYou must re-bind your controllers, otherwise they will no longer function. Do you want to do this now?</string>
 </resources>