diff --git a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
index 53098002fe9f7608b9e17d4a80efac91bcef0255..e44bc1ad247aa0bc1748b61bcd4cd71674f1d04a 100644
--- a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
@@ -37,6 +37,7 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
     private lateinit var dataHandler: AppBaseHandler
     private lateinit var appInfoAdapter: AppConfigAdapter
     private lateinit var refreshTimer: Timer
+    private lateinit var appInfoData: AppInfoData
 
     private var apkPackageInfo: List<ApkPackageInfo>? = null
 
@@ -74,6 +75,10 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
 
         requestAppList()
 
+        refreshBtn.setOnClickListener{
+            requestAppList()
+        }
+
     }
 
     private fun requestAppList() {
@@ -134,15 +139,17 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
 
     override fun onProtocolSucceed(protocol: IProtocol?) {
         if (protocol is GetAppInfoProtocol) {
-            val appInfoData =  protocol.data as AppInfoData
+            this.appInfoData =  protocol.data
             this.appInfoAdapter.setData(appInfoData.apkInfos)
             this.appInfoAdapter.notifyDataSetChanged()
 
-            for (apkInfo in appInfoData.apkInfos) {
-                if (apkInfo.monitoring && AppUtil.isAppInstalled(this, apkInfo.packageName)) {
-                    val task = Task(this.applicationContext)
-                    task.from(apkInfo)
-                    TaskManager.instance.add(task)
+            if (!TaskManager.instance.isRunning) {
+                for (apkInfo in appInfoData.apkInfos) {
+                    if (apkInfo.monitoring && AppUtil.isAppInstalled(this, apkInfo.packageName)) {
+                        val task = Task(this.applicationContext)
+                        task.from(apkInfo)
+                        TaskManager.instance.add(task)
+                    }
                 }
             }
         }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 512ef07db8801106691a4b624a2aecb91b02c6fc..a5fb5244d567de09eecc68fdebaafd371d5c1498 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -33,6 +33,13 @@
             android:layout_height="wrap_content"
             android:layout_marginLeft="10dp"
             android:text="停止"/>
+
+        <Button
+            android:id="@+id/refreshBtn"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="10dp"
+            android:text="刷新应用列表"/>
     </LinearLayout>
 
     <ListView