From 4b1ef9e20db8dd7087e8c2543fb19df1abfd983d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8A=89=E6=B8=85=E6=8F=9A?= <2465199797@qq.com>
Date: Mon, 29 Jun 2026 15:14:34 +0800
Subject: [PATCH] fix(android): sync input service state with Flutter (#15419)

Signed-off-by: liuqiang <2465199797@qq.com>
---
 .../com/carriez/flutter_hbb/InputService.kt   | 20 +++++++++++++++++++
 .../com/carriez/flutter_hbb/MainActivity.kt   | 11 +++++-----
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt b/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt
index 3ca83fbac..6a4a21bab 100644
--- a/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt
+++ b/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt
@@ -8,6 +8,7 @@ package com.carriez.flutter_hbb
 
 import android.accessibilityservice.AccessibilityService
 import android.accessibilityservice.GestureDescription
+import android.content.Intent
 import android.graphics.Path
 import android.os.Build
 import android.os.Bundle
@@ -68,6 +69,16 @@ class InputService : AccessibilityService() {
             get() = ctx != null
     }
 
+    private fun notifyInputState() {
+        val inputState = isOpen.toString()
+        Handler(Looper.getMainLooper()).post {
+            MainActivity.flutterMethodChannel?.invokeMethod(
+                "on_state_changed",
+                mapOf("name" to "input", "value" to inputState)
+            )
+        }
+    }
+
     private val logTag = "input service"
     private var leftIsDown = false
     private var touchPath = Path()
@@ -716,6 +727,7 @@ class InputService : AccessibilityService() {
     override fun onServiceConnected() {
         super.onServiceConnected()
         ctx = this
+        notifyInputState()
         val info = AccessibilityServiceInfo()
         if (Build.VERSION.SDK_INT >= 33) {
             info.flags = FLAG_INPUT_METHOD_EDITOR or FLAG_RETRIEVE_INTERACTIVE_WINDOWS
@@ -734,8 +746,16 @@ class InputService : AccessibilityService() {
 
     override fun onDestroy() {
         ctx = null
+        // Keep this fallback even though onUnbind usually notifies first.
+        notifyInputState()
         super.onDestroy()
     }
 
+    override fun onUnbind(intent: Intent?): Boolean {
+        ctx = null
+        notifyInputState()
+        return super.onUnbind(intent)
+    }
+
     override fun onInterrupt() {}
 }
diff --git a/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt b/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt
index fea8e5519..5561b8814 100644
--- a/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt
+++ b/flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt
@@ -200,12 +200,13 @@ class MainActivity : FlutterActivity() {
                 "stop_input" -> {
                     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                         InputService.ctx?.disableSelf()
+                    } else {
+                        InputService.ctx = null
+                        Companion.flutterMethodChannel?.invokeMethod(
+                            "on_state_changed",
+                            mapOf("name" to "input", "value" to InputService.isOpen.toString())
+                        )
                     }
-                    InputService.ctx = null
-                    Companion.flutterMethodChannel?.invokeMethod(
-                        "on_state_changed",
-                        mapOf("name" to "input", "value" to InputService.isOpen.toString())
-                    )
                     result.success(true)
                 }
                 "cancel_notification" -> {