diff --git a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
index 11dfa4aa447492ed97e757c6016801e69efd3bb7..c9fdec61ae826a730aa4819541dcfc20c100a5e1 100644
--- a/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/MainActivity.kt
@@ -38,6 +38,8 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
     private lateinit var appInfoAdapter: AppConfigAdapter
     private lateinit var refreshTimer: Timer
     private lateinit var appInfoData: AppInfoData
+    private var startSet = false
+    private var isStart = false
 
     private var apkPackageInfo: List<ApkPackageInfo>? = null
 
@@ -65,7 +67,14 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
         startRobotService()
 
         startBtn.setOnClickListener{
-            toggle()
+            if (isStart) {
+                stop()
+            }
+            else {
+                start()
+            }
+
+            isStart = !isStart
         }
         startBtn.requestFocus()
 
@@ -79,8 +88,24 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
 
     }
 
-    private fun toggle() {
-        // 暂时测试用
+    private fun start() {
+        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
+            requestAppList()
+        }
+    }
+
+    private fun stop() {
         if (TaskManager.instance.isRunning) {
             stopRobot()
             startBtn.isEnabled = false
@@ -90,15 +115,12 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
                 refreshBtn.isEnabled = true
             }, 3000)
         }
-        else {
-            startRobot()
-            startBtn.isEnabled = false
-            startBtn.postDelayed({
-                startBtn.isEnabled = true
-                startBtn.text = "停止"
-                refreshBtn.isEnabled = false
-            }, 2000)
-        }
+    }
+
+    private fun resetStartBtn() {
+        startBtn.isEnabled = true
+        startBtn.text = "开始"
+        refreshBtn.isEnabled = true
     }
 
     private fun requestAppList() {
@@ -151,10 +173,18 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
 
     override fun onProtocolFailed(protocol: IProtocol?) {
         Toast.makeText(this, "获取应用列表信息出错", Toast.LENGTH_SHORT).show()
+        if (startSet) {
+            resetStartBtn()
+            startSet = false
+        }
     }
 
     override fun onHttpFailed(protocol: IProtocol?) {
         Toast.makeText(this, "网络错误", Toast.LENGTH_SHORT).show()
+        if (startSet) {
+            resetStartBtn()
+            startSet = false
+        }
     }
 
     override fun onProtocolSucceed(protocol: IProtocol?) {
@@ -172,6 +202,19 @@ class MainActivity : AppCompatActivity(), IAppBaseCallback {
                     }
                 }
             }
+
+            if (startSet) {
+                startBtn.isEnabled = true
+                if (TaskManager.instance.tasks.size > 0) {
+                    startRobot()
+                    startSet = false
+                    startBtn.text = "停止"
+                    refreshBtn.isEnabled = false
+                }
+                else {
+                    Toast.makeText(this, "没有任务可以执行", Toast.LENGTH_SHORT).show()
+                }
+            }
         }
     }
 
diff --git a/app/src/main/java/com/duolebo/blyrobot/util/AdbUtil.kt b/app/src/main/java/com/duolebo/blyrobot/util/AdbUtil.kt
index 5ba5c826b5c950b8b4b9231fdaac6de1da56bbd4..6f599c9c749ca466ef29a1acaa706d34b0962743 100644
--- a/app/src/main/java/com/duolebo/blyrobot/util/AdbUtil.kt
+++ b/app/src/main/java/com/duolebo/blyrobot/util/AdbUtil.kt
@@ -19,9 +19,11 @@ object AdbUtil {
     // 通过id判断是否有root权限，部分盒子是没有su的
     fun checkRootPermission(): Boolean {
         var proc = getShellProc(ROOT_SHELL) ?: return false
-        var commands = ArrayList<String>()
+        Log.i(TAG, "get root proc success!")
+        val commands = ArrayList<String>()
         commands.add("id -u")
-        var result = this.sendCommands(commands, proc)
+        val result = this.sendCommands(commands, proc)
+        Log.i(TAG, "check permission error ${result.errorLines} and message ${result.successLines}")
         if (isRoot(result)) {
             return true
         }
@@ -58,6 +60,10 @@ object AdbUtil {
             e.printStackTrace()
         }
 
+        if (proc == null) {
+            Log.i(TAG, "get root proc failed")
+        }
+
         return proc
     }