diff --git a/app/build.gradle b/app/build.gradle
index 9393f8a27b1e040e28575fa518a1d42e5ffdc12e..a27ca3f9f375836873510f38b64aaa4e186aa775 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -13,7 +13,7 @@ android {
         minSdkVersion 15
         targetSdkVersion 22
         versionCode 15
-        versionName "1.3.30"
+        versionName "1.4.40"
     }
 
     signingConfigs {
diff --git a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
index a43dcd813e2658ec8eee0c9c225aaa025cb639e7..ce0912723af66e027b442b55bde5537442b2ee59 100644
--- a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
@@ -105,6 +105,7 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
     }
 
     private fun stop() {
+        Toast.makeText(this, "正在停止任务，请稍候...", Toast.LENGTH_SHORT).show()
         stopRobot()
         stopBtn.isEnabled = false
         stopBtn.isFocusable = false
diff --git a/app/src/main/java/com/duolebo/blyrobot/service/BylRobotService.kt b/app/src/main/java/com/duolebo/blyrobot/service/BylRobotService.kt
index 0a0c20eedea90ffeff3947a38cdb987ca802736a..3bde02dca53cccb7b4c314eda1a73d48d41dab5c 100644
--- a/app/src/main/java/com/duolebo/blyrobot/service/BylRobotService.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/service/BylRobotService.kt
@@ -91,6 +91,7 @@ class BylRobotService: Service(), IAppBaseCallback {
     override fun onDestroy() {
         Log.i(TAG, "destroy...")
         super.onDestroy()
+        stopTask()
         FtpManager.instance.stop()
         LocalBroadcastManager.getInstance(this).unregisterReceiver(broadcastReceiver)
     }
diff --git a/app/src/main/java/com/duolebo/blyrobot/tools/FtpManager.kt b/app/src/main/java/com/duolebo/blyrobot/tools/FtpManager.kt
index 439db23e20f7dbf67a6f8f438ab896ca787fc2ac..cfb31a77bcdcb955318abf7c39e0213f07eea4f5 100644
--- a/app/src/main/java/com/duolebo/blyrobot/tools/FtpManager.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/tools/FtpManager.kt
@@ -22,6 +22,8 @@ class FtpManager {
 
     fun start() {
         Log.i(TAG, "ftp manager start...")
+        if (this.isRunning)
+            return
         scheduleTime?.run { cancel() }
         this.isRunning = true
         scheduleTime = Timer()
@@ -64,6 +66,7 @@ class FtpManager {
         for (uploadTask in uploadTasks) {
             cancelTask(uploadTask)
         }
+        this.isRunning = false
     }
 
 }
\ No newline at end of file