feat(android): use Java Activity input bridge only

Android/library/src/main/cpp/CMakeLists.txt

@@ -23,8 +23,9 @@ add_compile_options(-Wno-deprecated-declarations)
 # ---- Source files ----
 set(MODMANAGER_SOURCES
     core/dobby_hook.cpp
-        core/jni_helper.c
-        core/misc.c
+    core/java_input_bridge.cpp
+    core/jni_helper.c
+    core/misc.c
 )
 
 set(MONODROID_SOURCES

Android/library/src/main/cpp/core/dobby_hook.cpp

@@ -1,4 +1,3 @@
-#include <jni.h>
 #include <cstdint>
 #include <android/log.h>
 

Android/library/src/main/cpp/core/java_input_bridge.h

@@ -0,0 +1,88 @@
+#ifndef STARRAY_JAVA_INPUT_BRIDGE_H
+#define STARRAY_JAVA_INPUT_BRIDGE_H
+
+#include <stdint.h>
+
+#define MODMANAGER_JAVA_INPUT_ABI_VERSION 2
+#define MODMANAGER_JAVA_INPUT_MAX_POINTERS 32
+#define MODMANAGER_JAVA_INPUT_MAX_HISTORY_SAMPLES 256
+#define MODMANAGER_JAVA_INPUT_AXIS_COUNT 64
+
+typedef struct ModManagerJavaInputPointer {
+    int32_t id;
+    int32_t tool_type;
+    float x;
+    float y;
+    float raw_x;
+    float raw_y;
+    float pressure;
+    float size;
+    float touch_major;
+    float touch_minor;
+    float tool_major;
+    float tool_minor;
+    float orientation;
+    float tilt;
+    float distance;
+    float axis_values[MODMANAGER_JAVA_INPUT_AXIS_COUNT];
+} ModManagerJavaInputPointer;
+
+#pragma pack(push, 4)
+typedef struct ModManagerJavaInputHistorySample {
+    int32_t pointer_count;
+    int32_t stored_pointer_count;
+    int64_t event_time_nanos;
+    const ModManagerJavaInputPointer *pointers;
+} ModManagerJavaInputHistorySample;
+
+typedef struct ModManagerJavaInputEvent {
+    int32_t struct_size;
+    int32_t abi_version;
+    int32_t type;
+    int32_t is_generic_motion;
+    int32_t full_data_included;
+    int32_t action;
+    int32_t action_index;
+    int32_t pointer_count;
+    int32_t stored_pointer_count;
+    int32_t source;
+    int32_t device_id;
+    int32_t flags;
+    int32_t meta_state;
+    int32_t button_state;
+    int32_t action_button;
+    int32_t key_code;
+    int32_t scan_code;
+    int32_t repeat_count;
+    int32_t unicode_code_point;
+    int32_t viewport_width;
+    int32_t viewport_height;
+    int32_t raw_action;
+    int64_t event_time_nanos;
+    int64_t down_time_nanos;
+    float horizontal_scroll;
+    float vertical_scroll;
+    int32_t history_sample_count;
+    int32_t stored_history_sample_count;
+    const ModManagerJavaInputHistorySample *history_samples;
+    ModManagerJavaInputPointer pointers[MODMANAGER_JAVA_INPUT_MAX_POINTERS];
+} ModManagerJavaInputEvent;
+#pragma pack(pop)
+
+typedef void (*ModManagerJavaInputCallback)(const ModManagerJavaInputEvent *event);
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void modmanager_set_java_input_callback(void *callback);
+void modmanager_set_java_input_capture_state(int overlay_visible,
+                                             int capture_mouse,
+                                             int capture_keyboard);
+void modmanager_set_java_input_full_data_enabled(int enabled);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

Android/library/src/main/java/net/dot/MonoRunner.java

@@ -3,6 +3,7 @@
 
 package net.dot;
 
+import starray.android.modmanager.ModManagerUtils;
 import android.util.Log;
 import java.util.ArrayList;
 
@@ -26,6 +27,7 @@ public final class MonoRunner {
         System.loadLibrary("System.Security.Cryptography.Native.Android");
         System.loadLibrary("monodroid");
         System.loadLibrary("modmanager");
+        ModManagerUtils.registerHostInputBridge();
     }
 
     // ========================================================================

Android/library/src/main/java/starray/android/modmanager/ModManagerUtils.java

@@ -38,6 +38,25 @@ public static Activity getUnityActivity() {
         return null;
     }
 
+    /**
+     * Activate the Java input bridge exposed by patched host Activities.
+     * Reflection avoids a hard class/method dependency; unpatched hosts can load the AAR,
+     * but they do not provide input events on the bridge-only input path.
+     */
+    public static boolean registerHostInputBridge() {
+        Activity activity = getUnityActivity();
+        if (activity == null) return false;
+
+        try {
+            java.lang.reflect.Method method = activity.getClass()
+                .getMethod("registerJavaInputBridge");
+            Object result = method.invoke(activity);
+            return result instanceof Boolean && (Boolean) result;
+        } catch (Exception | LinkageError ignored) {
+            return false;
+        }
+    }
+
     /** showSoftInput 前调用，把 ImGui 已有文本同步到 EditText */
     public static void setInputText(String text) {
         if (unityActivity == null) return;