trying to add open android web browser, basically took swkb as template

src/android/app/src/main/java/org/yuzu/yuzu_emu/NativeLibrary.kt

@@ -26,6 +26,7 @@ import org.yuzu.yuzu_emu.model.InstallResult
 import org.yuzu.yuzu_emu.model.Patch
 import org.yuzu.yuzu_emu.model.GameVerificationResult
 import org.yuzu.yuzu_emu.network.NetPlayManager
+import org.yuzu.yuzu_emu.applets.web.WebBrowser
 
 /**
  * Class which contains methods that interact
@@ -457,6 +458,16 @@ object NativeLibrary {
      */
     external fun setCurrentAppletId(appletId: Int)
 
+    /**
+     * Launch external URL when Web applet and opens browser
+     *
+     * @param String URL
+     */
+    @JvmStatic
+    fun openExternalUrl(url: String) {
+        WebBrowser.openExternal(url)
+    }
+
     /**
      * Sets the cabinet mode for launching the cabinet applet.
      *

src/android/app/src/main/java/org/yuzu/yuzu_emu/applets/web/WebBrowser.kt

@@ -0,0 +1,35 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package org.yuzu.yuzu_emu.applets.web
+
+import android.content.Intent
+import android.net.Uri
+import androidx.annotation.Keep
+import org.yuzu.yuzu_emu.NativeLibrary
+import org.yuzu.yuzu_emu.utils.Log
+
+/**
+    Should run WebBrowser as a new intent.
+*/
+
+@Keep
+object WebBrowser {
+    @JvmStatic
+    fun openExternal(url: String) {
+        val activity = NativeLibrary.sEmulationActivity.get() ?: run {
+            return
+        }
+
+        activity.runOnUiThread {
+            try {
+                val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url)).apply {
+                    addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                }
+                activity.startActivity(intent)
+            } catch (e: Exception) {
+                Log.error("WebBrowser failed to launch $url: ${e.message}")
+            }
+        }
+    }
+}

src/android/app/src/main/jni/native.cpp

@@ -66,6 +66,7 @@
 #include "core/frontend/applets/profile_select.h"
 #include "core/frontend/applets/software_keyboard.h"
 #include "core/frontend/applets/web_browser.h"
+#include "common/android/applets/web_browser.h"
 #include "core/hle/service/am/applet_manager.h"
 #include "core/hle/service/am/frontend/applets.h"
 #include "core/hle/service/filesystem/filesystem.h"
@@ -275,6 +276,7 @@ Core::SystemResultStatus EmulationSession::InitializeEmulation(const std::string
 
     // Initialize system.
     jauto android_keyboard = std::make_unique<Common::Android::SoftwareKeyboard::AndroidKeyboard>();
+    jauto android_webapplet = std::make_unique<Common::Android::WebBrowser::AndroidWebBrowser>();
     m_software_keyboard = android_keyboard.get();
     m_system.SetShuttingDown(false);
     m_system.ApplySettings();
@@ -289,7 +291,7 @@ Core::SystemResultStatus EmulationSession::InitializeEmulation(const std::string
         nullptr,                     // Photo Viewer
         nullptr,                     // Profile Selector
         std::move(android_keyboard), // Software Keyboard
-        nullptr,                     // Web Browser
+        std::move(android_webapplet),// Web Browser
         nullptr,                     // Net Connect
     });
 

src/common/CMakeLists.txt

@@ -176,7 +176,9 @@ if(ANDROID)
         android/multiplayer/multiplayer.cpp
         android/multiplayer/multiplayer.h
         android/applets/software_keyboard.cpp
-        android/applets/software_keyboard.h)
+        android/applets/software_keyboard.h
+        android/applets/web_browser.cpp
+        android/applets/web_browser.h)
 endif()
 
 if(ARCHITECTURE_x86_64)

src/common/android/applets/web_browser.cpp

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common/android/android_common.h"
+#include "common/android/id_cache.h"
+#include "common/android/applets/web_browser.h"
+#include "common/logging/log.h"
+
+static jclass s_native_library_class = nullptr;
+static jmethodID s_open_external_url = nullptr;
+
+namespace Common::Android::WebBrowser {
+
+void InitJNI(JNIEnv* env) {
+    const jclass local = env->FindClass("org/yuzu/yuzu_emu/NativeLibrary");
+    s_native_library_class = static_cast<jclass>(env->NewGlobalRef(local));
+    env->DeleteLocalRef(local);
+    s_open_external_url = env->GetStaticMethodID(s_native_library_class, "openExternalUrl", "(Ljava/lang/String;)V");
+}
+
+void CleanupJNI(JNIEnv* env) {
+    if (s_native_library_class != nullptr) {
+        env->DeleteGlobalRef(s_native_library_class);
+        s_native_library_class = nullptr;
+    }
+    s_open_external_url = nullptr;
+}
+
+void AndroidWebBrowser::OpenLocalWebPage(const std::string& local_url, ExtractROMFSCallback extract_romfs_callback, OpenWebPageCallback callback) const {
+    LOG_WARNING(Frontend, "(STUBBED)");
+    callback(Service::AM::Frontend::WebExitReason::WindowClosed, "");
+}
+
+void AndroidWebBrowser::OpenExternalWebPage(const std::string& external_url, OpenWebPageCallback callback) const {
+    // do a dedicated thread, calling from the this thread crashed CPU fiber.
+    Common::Android::RunJNIOnFiber<void>([&](JNIEnv* env) {
+        if (env != nullptr && s_native_library_class != nullptr && s_open_external_url != nullptr) {
+            const jstring j_url = Common::Android::ToJString(env, external_url);
+            env->CallStaticVoidMethod(s_native_library_class, s_open_external_url, j_url);
+            env->DeleteLocalRef(j_url);
+        } else {
+            LOG_ERROR(Frontend, "JNI not initialized, cannot open {}", external_url);
+        }
+        return;
+    });
+
+    callback(Service::AM::Frontend::WebExitReason::WindowClosed, external_url);
+}
+
+} // namespace Common::Android::WebBrowser

src/common/android/applets/web_browser.h

@@ -0,0 +1,30 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <jni.h>
+#include <string>
+
+#include "core/frontend/applets/web_browser.h"
+
+namespace Common::Android::WebBrowser {
+
+class AndroidWebBrowser final : public Core::Frontend::WebBrowserApplet {
+public:
+    ~AndroidWebBrowser() override = default;
+
+    void Close() const override {}
+
+    void OpenLocalWebPage(const std::string& local_url,
+                          ExtractROMFSCallback extract_romfs_callback,
+                          OpenWebPageCallback callback) const override;
+
+    void OpenExternalWebPage(const std::string& external_url,
+                             OpenWebPageCallback callback) const override;
+};
+
+void InitJNI(JNIEnv* env);
+void CleanupJNI(JNIEnv* env);
+
+} // namespace Common::Android::WebBrowser

src/common/android/id_cache.cpp

@@ -4,6 +4,7 @@
 #include <jni.h>
 
 #include "applets/software_keyboard.h"
+#include "applets/web_browser.h"
 #include "common/android/id_cache.h"
 #include "common/assert.h"
 #include "common/fs/fs_android.h"
@@ -602,6 +603,7 @@ namespace Common::Android {
 
         // Initialize applets
         Common::Android::SoftwareKeyboard::InitJNI(env);
+        Common::Android::WebBrowser::InitJNI(env);
 
         return JNI_VERSION;
     }
@@ -631,6 +633,7 @@ namespace Common::Android {
 
         // UnInitialize applets
         SoftwareKeyboard::CleanupJNI(env);
+        WebBrowser::CleanupJNI(env);
 
         AndroidMultiplayer::NetworkShutdown();
     }