diff --git a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
index a675333934d51ef2b558042630252ca04d31bd5f..87ccdb16621d176a7cdeef09f15c00fdf7bd1cc4 100644
--- a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
@@ -39,7 +39,6 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
     private lateinit var refreshTimer: Timer
     private lateinit var appInfoData: AppInfoData
     private var startSet = false
-    private var isStart = false
 
     private var apkPackageInfo: List<ApkPackageInfo>? = null
 
@@ -69,17 +68,14 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
         startRobotService()
 
         startBtn.setOnClickListener{
-            if (isStart) {
-                stop()
-            }
-            else {
-                start()
-            }
-
-            isStart = !isStart
+            start()
         }
         startBtn.requestFocus()
 
+        stopBtn.setOnClickListener{
+            stop()
+        }
+
         requestAppList()
 
         refreshBtn.isEnabled = true
@@ -94,12 +90,6 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
         startBtn.isEnabled = false
         if (TaskManager.instance.tasks.size > 0) {
             startRobot()
-
-            startBtn.postDelayed({
-                startBtn.isEnabled = true
-                startBtn.text = "停止"
-                refreshBtn.isEnabled = false
-            }, 2000)
         }
         else {
             startSet = true
@@ -108,15 +98,9 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
     }
 
     private fun stop() {
-        if (TaskManager.instance.isRunning) {
-            stopRobot()
-            startBtn.isEnabled = false
-            startBtn.postDelayed({
-                startBtn.isEnabled = true
-                startBtn.text = "启动"
-                refreshBtn.isEnabled = true
-            }, 3000)
-        }
+        stopRobot()
+        stopBtn.isEnabled = false
+        startBtn.isEnabled = true
     }
 
     private fun resetStartBtn() {
diff --git a/app/src/main/java/com/duolebo/blyrobot/tools/TaskManager.kt b/app/src/main/java/com/duolebo/blyrobot/tools/TaskManager.kt
index 0446249a48680f4840b8bdf3903a5004b6c83235..5abeeb94ba4b802dd0b98e730315dc179783f911 100644
--- a/app/src/main/java/com/duolebo/blyrobot/tools/TaskManager.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/tools/TaskManager.kt
@@ -72,6 +72,10 @@ class TaskManager {
             return
         }
 
+        for (task in tasks) {
+            Log.i(TAG, "list tasks: ${task.apkInfo.packageName}")
+        }
+
         this.isRunning = true
         scheduleTime?.run {
             cancel()
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 35f10793fcb29b54024fd3305e452f7eb367446b..5e4fc1402e669192c38f9324b37fa5fa86745f07 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -27,6 +27,13 @@
             android:layout_height="wrap_content"
             android:text="启动"/>
 
+        <Button
+            android:id="@+id/stopBtn"
+            android:layout_marginLeft="10dp"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="停止"/>
+
         <Button
             android:id="@+id/refreshBtn"
             android:layout_width="wrap_content"