diff --git a/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt b/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt
index 6b23eaddd..cf9cfb814 100644
--- a/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt
+++ b/android/app/src/main/kotlin/com/carriez/flutter_hbb/InputService.kt
@@ -11,9 +11,7 @@ import androidx.annotation.RequiresApi
 import kotlin.concurrent.thread
 
 class InputService : AccessibilityService() {
-//    companion object {
-//        var inputService:InputService? = null
-//    }
+
     private val logTag = "input service"
     private var leftIsDown = false
     private var mPath = Path()
@@ -22,14 +20,14 @@ class InputService : AccessibilityService() {
     private var mouseY = 0
 
     @RequiresApi(Build.VERSION_CODES.N)
-    fun mouseInput(mask: Int, _x: Int, _y: Int) {
+    fun rustMouseInput(mask: Int, _x: Int, _y: Int) {
         Log.w(logTag, "got mouse input:x:$_x ,y:$_y ,mask:$mask ")
 
         // TODO 临时倍数
         // TODO 按键抬起按下时候 x y 都是0
         if ( !(mask == 9 || mask == 10) ) {
-            mouseX = _x * 2
-            mouseY = _y * 2
+            mouseX = _x * SCALE
+            mouseY = _y * SCALE
         }
 
         // left button down ,was up
diff --git a/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt b/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt
index 372bd3cfe..f9597073f 100644
--- a/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt
+++ b/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainActivity.kt
@@ -2,36 +2,34 @@ package com.carriez.flutter_hbb
 
 import android.app.Activity
 import android.app.AlertDialog
-import android.content.Context
 import android.content.Intent
 import android.media.projection.MediaProjectionManager
 import android.os.Build
-import android.os.Bundle
-import android.os.PersistableBundle
 import android.provider.Settings
+import android.util.DisplayMetrics
 import android.util.Log
 import androidx.annotation.RequiresApi
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.embedding.engine.FlutterEngine
-import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
-import java.nio.ByteBuffer
-import kotlin.concurrent.thread
 
+const val MAX_SIZE = 1400
 
 class MainActivity : FlutterActivity() {
     private val channelTag = "mChannel"
+    private val logTag = "mMainActivity"
     private var mediaProjectionResultIntent: Intent? = null
     private val requestCode = 1
-    private val buf = ByteBuffer.allocate(16)
 
     init {
         System.loadLibrary("rustdesk")
     }
 
+    external fun rustSetInfo(username: String, hostname: String, width: Int, height: Int)
+
     override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
         super.configureFlutterEngine(flutterEngine) // 必要 否则无法正确初始化flutter
-
+        updateMachineInfo()
         MethodChannel(
             flutterEngine.dartExecutor.binaryMessenger,
             channelTag
@@ -52,7 +50,7 @@ class MainActivity : FlutterActivity() {
                     mStopService()
                     result.success(true)
                 }
-                "checkInput" ->{
+                "checkInput" -> {
                     checkInput()
                     result.success(true)
                 }
@@ -128,4 +126,40 @@ class MainActivity : FlutterActivity() {
             mediaProjectionResultIntent = data
         }
     }
+
+    private fun updateMachineInfo() {
+        // 屏幕尺寸 控制最长边不超过1400 超过则减半直到1400 并储存缩放比例 实际发送给手机端的尺寸为缩小后的尺寸
+        // input控制时再通过缩放比例恢复原始尺寸进行path入参
+        val dm = DisplayMetrics()
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            display?.getRealMetrics(dm)
+        } else {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+                @Suppress("DEPRECATION")
+                windowManager.defaultDisplay.getRealMetrics(dm)
+            } else {
+                @Suppress("DEPRECATION")
+                windowManager.defaultDisplay.getMetrics(dm)
+            }
+        }
+        var w = dm.widthPixels
+        var h = dm.heightPixels
+        var scale = 1
+        if (w != 0 && h != 0) {
+            if (w > MAX_SIZE || h > MAX_SIZE) {
+                scale = 2
+                w /= scale
+                h /= scale
+            }
+            Log.d(logTag, "Real size - width:$w,height:$h")
+
+            FIXED_WIDTH = 540
+            FIXED_HEIGHT = 1140
+            SCALE = scale
+            // TODO  username hostname
+            rustSetInfo("csf", "Android", FIXED_WIDTH, FIXED_HEIGHT)
+        } else {
+            Log.e(logTag, "Got Screen Size Fail!")
+        }
+    }
 }
diff --git a/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt b/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt
index 1c6fba716..e96b6a617 100644
--- a/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt
+++ b/android/app/src/main/kotlin/com/carriez/flutter_hbb/MainService.kt
@@ -12,8 +12,10 @@ import android.media.projection.MediaProjection
 import android.media.projection.MediaProjectionManager
 import android.os.Build
 import android.os.IBinder
+import android.util.DisplayMetrics
 import android.util.Log
 import android.view.Surface
+import android.view.WindowManager
 import android.widget.Toast
 import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationCompat
@@ -26,9 +28,9 @@ const val START_SERVICE = "start_service"
 const val STOP_SERVICE = "stop_service"
 const val MIME_TYPE = MediaFormat.MIMETYPE_VIDEO_VP9
 
-// 获取手机尺寸 建立连接时发送尺寸和基础信息
-const val FIXED_WIDTH = 500 // 编码器有上限
-const val FIXED_HEIGHT = 1000
+var FIXED_WIDTH = 0 // 编码器有上限
+var FIXED_HEIGHT = 0
+var SCALE = 1  // RealScreenWidth = screenWidth * scale
 const val M_KEY_BIT_RATE = 1024_000
 const val M_KEY_FRAME_RATE = 30
 
diff --git a/android_doc.md b/android_doc.md
index 96a18f438..ce44a14d6 100644
--- a/android_doc.md
+++ b/android_doc.md
@@ -139,6 +139,8 @@ pub unsafe extern "system" fn Java_com_carriez_flutter_1hbb_MainActivity_init(
 ```
 - 注意，原项目包名flutter_hbb 带有下划线，通过安卓的编译提示获得的命名方式为如上。
 
+- 使用jni的时候会出现无输出崩溃的情况
+
 - 将安卓的对象实例（Context）在init的过程中传入rust端，  
 context通过env.new_global_ref()变成全局引用
 env.get_java_vm()获取到jvm
@@ -157,4 +159,15 @@ jvm.get_env()
 Kotlin 中的 ByteArray 类 会在JVM中编译成为java的byte[]
 byte[]通过jni传递到rust端时
 通过jni.rs的方法
-env.convert_byte_array()即可转化为Vec<u8>
\ No newline at end of file
+env.convert_byte_array()即可转化为Vec<u8>
+
+- 关于 sig
+  - (I)V ： 输入为Int 输出为Void
+  - (I)Ljava/nio/ByteBuffer ： 输入为Int 输出为ByteBuffer  对应jni JByteBuffer 且env 有对应解析方法
+  - ()[B : 输入为空 输出为byte[](java) == ByteArray(kotlin) == jbytearray(jni env 中有对应解析方法到Vec\<u8\>)
+  - 使用JValue枚举定义java变量
+
+# BIG TODO
+音频
+连续输入
+服务关闭操作
\ No newline at end of file
diff --git a/lib/server_page.dart b/lib/server_page.dart
index 7e76874b8..755fa7001 100644
--- a/lib/server_page.dart
+++ b/lib/server_page.dart
@@ -180,7 +180,7 @@ class PermissionRow extends StatelessWidget {
           TextSpan(
               text: isOk ? "已开启" : "未开启",
               style: TextStyle(
-                  fontSize: 16.0, color: isOk ? Colors.green : Colors.red)),
+                  fontSize: 16.0, color: isOk ? Colors.green : Colors.grey)),
         ])),
         TextButton(
             onPressed: onPressed,
@@ -202,7 +202,7 @@ Widget cardTitle(String text) {
           fontFamily: 'WorkSans',
           fontWeight: FontWeight.bold,
           fontSize: 25,
-          color: Color(0xFF00B6F0),
+          color: MyTheme.accent80,
         ),
       ));
 }