feat: support android keyboard input

flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt

@@ -10,8 +10,10 @@ import android.accessibilityservice.AccessibilityService
 import android.accessibilityservice.GestureDescription
 import android.graphics.Path
 import android.os.Build
+import android.os.Bundle
 import android.util.Log
 import android.view.accessibility.AccessibilityEvent
+import android.view.accessibility.AccessibilityNodeInfo
 import androidx.annotation.RequiresApi
 import java.util.*
 import kotlin.math.abs
@@ -252,6 +254,18 @@ class InputService : AccessibilityService() {
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.N)
+    fun onTextInput(str: String) {
+        findFocus(AccessibilityNodeInfo.FOCUS_INPUT)?.let {
+            val arguments = Bundle()
+            arguments.putCharSequence(
+                AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
+                str
+            )
+            it.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, arguments)
+        }
+    }
+
     override fun onServiceConnected() {
         super.onServiceConnected()
         ctx = this

flutter/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt

@@ -94,6 +94,12 @@ class MainService : Service() {
         }
     }
 
+    @Keep
+    @RequiresApi(Build.VERSION_CODES.N)
+    fun rustInputString(input: String) {
+        InputService.ctx?.onTextInput(input)
+    }
+
     @Keep
     fun rustGetByName(name: String): String {
         return when (name) {

flutter/lib/desktop/screen/desktop_remote_screen.dart

@@ -12,9 +12,9 @@ class DesktopRemoteScreen extends StatelessWidget {
   final Map<String, dynamic> params;
 
   DesktopRemoteScreen({Key? key, required this.params}) : super(key: key) {
-    if (!bind.mainStartGrabKeyboard()) {
-      stateGlobal.grabKeyboard = true;
-    }
+      if (!bind.mainStartGrabKeyboard()) {
+        stateGlobal.grabKeyboard = true;
+      }
   }
 
   @override

flutter/lib/mobile/pages/remote_page.dart

@@ -364,6 +364,10 @@ class _RemotePageState extends State<RemotePage> {
                       ? []
                       : gFFI.ffiModel.isPeerAndroid
                           ? [
+                              IconButton(
+                                  color: Colors.white,
+                                  icon: Icon(Icons.keyboard),
+                                  onPressed: openKeyboard),
                               IconButton(
                                 color: Colors.white,
                                 icon: const Icon(Icons.build),