diff --git a/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt b/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt
index 08bc651c4..dcfb4f4e1 100644
--- a/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt
+++ b/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt
@@ -64,9 +64,9 @@ class MainService : Service() {
 
     @Keep
     @RequiresApi(Build.VERSION_CODES.N)
-    fun rustPointerInput(kind: String, mask: Int, x: Int, y: Int) {
+    fun rustPointerInput(kind: Int, mask: Int, x: Int, y: Int) {
         // turn on screen with LIFT_DOWN when screen off
-        if (!powerManager.isInteractive && (kind == "touch" || mask == LIFT_DOWN)) {
+        if (!powerManager.isInteractive && (kind == 0 || mask == LIFT_DOWN)) {
             if (wakeLock.isHeld) {
                 Log.d(logTag, "Turn on Screen, WakeLock release")
                 wakeLock.release()
@@ -75,10 +75,10 @@ class MainService : Service() {
             wakeLock.acquire(5000)
         } else {
             when (kind) {
-                "touch" -> {
+                0 -> { // touch
                     InputService.ctx?.onTouchInput(mask, x, y)
                 }
-                "mouse" -> {
+                1 -> { // mouse
                     InputService.ctx?.onMouseInput(mask, x, y)
                 }
                 else -> {
diff --git a/libs/scrap/src/android/ffi.rs b/libs/scrap/src/android/ffi.rs
index ca90b5986..5dc6d3b4b 100644
--- a/libs/scrap/src/android/ffi.rs
+++ b/libs/scrap/src/android/ffi.rs
@@ -209,19 +209,38 @@ pub fn clear_codec_info() {
     *MEDIA_CODEC_INFOS.write().unwrap() = None;
 }
 
+// another way to fix "reference table overflow" error caused by new_string and call_main_service_pointer_input frequently calld
+// is below, but here I change kind from string to int for performance
+/*
+        env.with_local_frame(10, || {
+            let kind = env.new_string(kind)?;
+            env.call_method(
+                ctx,
+                "rustPointerInput",
+                "(Ljava/lang/String;III)V",
+                &[
+                    JValue::Object(&JObject::from(kind)),
+                    JValue::Int(mask),
+                    JValue::Int(x),
+                    JValue::Int(y),
+                ],
+            )?;
+            Ok(JObject::null())
+        })?;
+ */
 pub fn call_main_service_pointer_input(kind: &str, mask: i32, x: i32, y: i32) -> JniResult<()> {
     if let (Some(jvm), Some(ctx)) = (
         JVM.read().unwrap().as_ref(),
         MAIN_SERVICE_CTX.read().unwrap().as_ref(),
     ) {
         let mut env = jvm.attach_current_thread_as_daemon()?;
-        let kind = env.new_string(kind)?;
+        let kind = if kind == "touch" { 0 } else { 1 };
         env.call_method(
             ctx,
             "rustPointerInput",
             "(Ljava/lang/String;III)V",
             &[
-                JValue::Object(&JObject::from(kind)),
+                JValue::Int(kind),
                 JValue::Int(mask),
                 JValue::Int(x),
                 JValue::Int(y),