Makes monsters shareable.

Android/app/src/main/AndroidManifest.xml

@@ -76,6 +76,16 @@
 
             <nav-graph android:value="@navigation/mobile_navigation" />
         </activity>
+
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="com.majinnaibu.monstercards.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
     </application>
 
 </manifest>

Android/app/src/main/java/com/majinnaibu/monstercards/ui/monster/MonsterDetailFragment.java

@@ -1,8 +1,16 @@
 package com.majinnaibu.monstercards.ui.monster;
 
 import android.content.Context;
+import android.content.Intent;
 import android.content.res.Resources;
+import android.net.Uri;
 import android.os.Bundle;
+
+import androidx.core.content.FileProvider;
+import com.majinnaibu.monstercards.exporters.Open5eExporter;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.nio.charset.StandardCharsets;
 import android.text.Html;
 import android.text.Spanned;
 import android.util.DisplayMetrics;
@@ -184,10 +192,56 @@ public class MonsterDetailFragment extends MCFragment {
         } else if (item.getItemId() == R.id.menu_action_add_to_dashboard) {
             addCurrentMonsterToDashboard();
             return true;
+        } else if (item.getItemId() == R.id.menu_action_share_monster) {
+            shareCurrentMonster();
+            return true;
         }
         return super.onOptionsItemSelected(item);
     }
 
+    private void shareCurrentMonster() {
+        Monster monster = mViewModel.getMonster();
+        if (monster == null) {
+            return;
+        }
+
+        try {
+            Open5eExporter exporter = new Open5eExporter();
+            String jsonCard = exporter.exportMonster(monster);
+
+            Context context = requireContext();
+            String safeName = (monster.name != null && !monster.name.trim().isEmpty())
+                    ? monster.name.replaceAll("[^a-zA-Z0-9._-]", "_")
+                    : "monster";
+            File file = new File(context.getCacheDir(), safeName + ".card");
+
+            try (FileOutputStream out = new FileOutputStream(file)) {
+                out.write(jsonCard.getBytes(StandardCharsets.UTF_8));
+            }
+
+            Uri uri = FileProvider.getUriForFile(
+                    context,
+                    context.getPackageName() + ".fileprovider",
+                    file
+            );
+
+            Intent shareIntent = new Intent(Intent.ACTION_SEND);
+            shareIntent.setType("application/octet-stream");
+            shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
+            shareIntent.putExtra(Intent.EXTRA_TEXT, jsonCard);
+            shareIntent.putExtra(Intent.EXTRA_SUBJECT, monster.name);
+            shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+
+            startActivity(Intent.createChooser(shareIntent, getString(R.string.action_share_monster)));
+        } catch (Exception e) {
+            Logger.logError("Failed to share monster", e);
+            View view = getView();
+            if (view != null) {
+                Snackbar.make(view, R.string.failed_to_share_monster, Snackbar.LENGTH_LONG).show();
+            }
+        }
+    }
+
     private void addCurrentMonsterToDashboard() {
         UUID monsterId = mViewModel.getId().getValue();
         if (monsterId == null) {

Android/app/src/main/java/com/majinnaibu/monstercards/ui/monster/MonsterDetailViewModel.java

@@ -181,6 +181,10 @@ public class MonsterDetailViewModel extends ViewModel {
         return mMonsterId;
     }
 
+    public Monster getMonster() {
+        return mMonster;
+    }
+
     public void setMonster(@NonNull Monster monster) {
         mMonster = monster;
         mAbilities.setValue(mMonster.getAbilityDescriptions());

Android/app/src/main/res/drawable/ic_share_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M18,16.08c-0.76,0 -1.44,0.3 -1.96,0.77L8.91,12.7c0.05,-0.23 0.09,-0.47 0.09,-0.7s-0.04,-0.47 -0.09,-0.7l7.05,-4.11c0.54,0.5 1.25,0.81 2.04,0.81 1.66,0 3,-1.34 3,-3s-1.34,-3 -3,-3 -3,1.34 -3,3c0,0.23 0.04,0.47 0.09,0.7L8.04,9.81C7.5,9.31 6.79,9 6,9c-1.66,0 -3,1.34 -3,3s1.34,3 3,3c0.79,0 1.5,-0.31 2.04,-0.81l7.12,4.16c-0.05,0.21 -0.08,0.43 -0.08,0.65 0,1.61 1.31,2.92 2.92,2.92 1.61,0 2.92,-1.31 2.92,-2.92s-1.31,-2.92 -2.92,-2.92z"/>
+</vector>

Android/app/src/main/res/menu/monster_detail_menu.xml

@@ -4,8 +4,15 @@
 
     <item
         android:id="@+id/menu_action_edit_monster"
+        android:icon="@drawable/ic_edit_24"
         android:title="@string/action_edit"
-        app:showAsAction="never" />
+        app:showAsAction="ifRoom" />
+
+    <item
+        android:id="@+id/menu_action_share_monster"
+        android:icon="@drawable/ic_share_24"
+        android:title="@string/action_share_monster"
+        app:showAsAction="ifRoom" />
 
     <item
         android:id="@+id/menu_action_add_to_collection"

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

@@ -162,11 +162,13 @@
     <string name="snackbar_collection_added_to_dashboard">Added collection %1$s to Dashboard</string>
     <string name="snackbar_dashboard_cleared">Dashboard cleared</string>
     <string name="no_monsters_available">No monsters available in library. Create one first!</string>
-    <string name="action_import_from_url">Import Entity / Character...</string>
+    <string name="action_import_from_url">Import URL...</string>
     <string name="dialog_import_url_title">Import Entity or Character</string>
     <string name="dialog_import_url_message">Enter or paste a D&amp;D Beyond URL, Character ID, or Open5e JSON payload:</string>
     <string name="dialog_import_url_hint">e.g. D&amp;D Beyond URL or Open5e JSON</string>
     <string name="dialog_import">Import</string>
     <string name="toast_importing_url">Importing entity...</string>
     <string name="failed_to_import_url">Failed to import entity. Please check the URL, ID, or JSON format.</string>
+    <string name="action_share_monster">Share / Export Monster (.card)</string>
+    <string name="failed_to_share_monster">Failed to share monster</string>
 </resources>

Android/app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <cache-path name="shared_cards" path="." />
+    <external-cache-path name="shared_cards_ext" path="." />
+</paths>

Android/build.gradle

@@ -5,7 +5,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:9.3.1'
+        classpath 'com.android.tools.build:gradle:9.3.2'
 
         def nav_version = "2.9.8"
         classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"

docs/Import-Export.md

@@ -250,7 +250,7 @@ Extend the generic sharing feature with specialized, direct sharing channels (to
 - [x] **Step 3**: Import from D&D Beyond URL (`https://www.dndbeyond.com/characters/49074997` fetching from v5 character service endpoint).
 - [x] **Step 4**: Export to internal format described by Open5e document (`Open5eExporter`).
 - [x] **Step 5**: Import from internal format described by Open5e document (`Open5eImporter`).
-- [ ] **Step 6**: Generic Android Share button feature (`ACTION_SEND`).
+- [x] **Step 6**: Generic Android Share button feature (`ACTION_SEND`).
 - [ ] **Step 7**: Specific share targets (7.1 NFC, 7.2 Bluetooth, 7.3 Embedded Web URL).
 
 ---
@@ -260,7 +260,7 @@ Extend the generic sharing feature with specialized, direct sharing channels (to
 ### 4.1 Schema Architecture Considerations
 - **Unified Action Entity / Type Column**:
   - Instead of maintaining separate `List<Trait>` columns for each category (`actions`, `reactions`, `legendaryActions`, `lairActions`, `regionalActions`, etc.), a unified `monster_actions` table (or model list) with an `action_type` column (`ABILITY`, `ACTION`, `BONUS_ACTION`, `REACTION`, `LEGENDARY_ACTION`, `MYTHIC_ACTION`, `LAIR_ACTION`, `REGIONAL_EFFECT`) simplifies Room DB queries and enables a single reusable editor UI component.
-- **Section Intro & End Note Metadata**:
+  - **Section Intro & End Note Metadata**:  
     - Store section-level intro text and end notes (e.g. `legendaryActionsDescription`, `lairActionsDescription`, `lairActionsEndNote`, `regionalActionsDescription`, `regionalActionsEndNote`, `mythicActionsDescription`) as dedicated metadata fields on the `Monster` entity rather than as artificial action traits.
 
 ### 4.2 Markdown & Content Formatting Support