diff --git a/app/src/main/assets/help/documentation/图片与图色处理.md b/app/src/main/assets/help/documentation/图片与图色处理.md
index e370f366..93a53379 100644
--- a/app/src/main/assets/help/documentation/图片与图色处理.md
+++ b/app/src/main/assets/help/documentation/图片与图色处理.md
@@ -47,7 +47,7 @@ images是图片与图色处理的工具。包括获取图片某点颜色，保
 * y \<y\> 要获取的像素的纵坐标。
 
 返回图片image在点(x, y)处的像素的ARGB值。  
-该值的格式为0xAARRGGBB。也就是，如果`var argb = images.pixel(image, x, y)`，那么可以通过`(argb & 0xFF000000) >> 24`获取透明度，通过`(argb & 0xFF0000) >> 16`获取R值，通过`(argb & 0xFF000000) >> 24`获取G值等，或者通过`images.alpha(argb)`, `images.red(argb)`等获取。
+该值的格式为0xAARRGGBB。也就是，如果`var argb = images.pixel(image, x, y)`，那么可以通过`(argb & 0xFF000000) >> 24`获取透明度，通过`(argb & 0xFF0000) >> 16`获取R值，通过`(argb & 0xFF000000) >> 24`获取G值等，或者通过`colors.alpha(argb)`, `colors.red(argb)`等获取。
 
 ### images.saveImage(image, path)
 
diff --git a/app/src/main/assets/help/documentation/需要Root权限的自动操作函数.md b/app/src/main/assets/help/documentation/需要Root权限的自动操作函数.md
index 722898a4..26d4a53a 100644
--- a/app/src/main/assets/help/documentation/需要Root权限的自动操作函数.md
+++ b/app/src/main/assets/help/documentation/需要Root权限的自动操作函数.md
@@ -6,7 +6,7 @@
 ### Tap(x, y)
 点击位置(x, y), 您可以通过"开发者选项"开启指针位置来确定点击坐标。
 
-### Swipe(x1, y1, x2, y2)
+### Swipe(x1, y1, x2, y2, \[delay\])
 滑动。从(x1, y1)位置滑动到(x2, y2)位置。
 
 ### Home()
diff --git a/app/src/main/java/com/stardust/scriptdroid/tool/AccessibilityServiceTool.java b/app/src/main/java/com/stardust/scriptdroid/tool/AccessibilityServiceTool.java
index 2b017c34..f5e0bb0c 100644
--- a/app/src/main/java/com/stardust/scriptdroid/tool/AccessibilityServiceTool.java
+++ b/app/src/main/java/com/stardust/scriptdroid/tool/AccessibilityServiceTool.java
@@ -53,7 +53,8 @@ public class AccessibilityServiceTool {
             "else\n" +
             "enabled=$pkg:$enabled\n" +
             "settings put secure enabled_accessibility_services $enabled\n" +
-            "fi";
+            "fi\n" +
+            "settings put secure accessibility_enabled 1";
 
     public static boolean enableAccessibilityServiceByRoot(Class<? extends android.accessibilityservice.AccessibilityService> accessibilityService) {
         String serviceName = App.getApp().getPackageName() + "/" + accessibilityService.getName();
@@ -62,9 +63,9 @@ public class AccessibilityServiceTool {
 
     public static boolean enableAccessibilityServiceByRootAndWaitFor(long timeOut) {
         if (enableAccessibilityServiceByRoot(AccessibilityService.class)) {
-            AccessibilityService.waitForEnabled(timeOut);
+            return AccessibilityService.waitForEnabled(timeOut);
         }
-        return true;
+        return false;
     }
 
     public static void enableAccessibilityServiceByRootIfNeeded() {
diff --git a/app/src/main/java/com/stardust/scriptdroid/ui/common/ProgressDialog.java b/app/src/main/java/com/stardust/scriptdroid/ui/common/ProgressDialog.java
new file mode 100644
index 00000000..f7fe0413
--- /dev/null
+++ b/app/src/main/java/com/stardust/scriptdroid/ui/common/ProgressDialog.java
@@ -0,0 +1,28 @@
+package com.stardust.scriptdroid.ui.common;
+
+import android.content.Context;
+
+import com.afollestad.materialdialogs.MaterialDialog;
+import com.stardust.scriptdroid.R;
+
+/**
+ * Created by Stardust on 2017/7/31.
+ */
+
+public class ProgressDialog {
+
+    private MaterialDialog mDialog;
+
+    public ProgressDialog(Context context) {
+        mDialog = new MaterialDialog.Builder(context)
+                .progress(true, 0)
+                .cancelable(false)
+                .content(R.string.text_on_progress)
+                .show();
+    }
+
+    public void dismiss() {
+        mDialog.dismiss();
+    }
+
+}
diff --git a/app/src/main/java/com/stardust/scriptdroid/ui/main/SideMenuFragment.java b/app/src/main/java/com/stardust/scriptdroid/ui/main/SideMenuFragment.java
index c98d92a8..a4f324d9 100644
--- a/app/src/main/java/com/stardust/scriptdroid/ui/main/SideMenuFragment.java
+++ b/app/src/main/java/com/stardust/scriptdroid/ui/main/SideMenuFragment.java
@@ -8,6 +8,7 @@ import android.support.design.widget.Snackbar;
 import android.support.v4.app.FragmentActivity;
 import android.support.v7.widget.SwitchCompat;
 import android.widget.CompoundButton;
+import android.widget.Toast;
 
 import com.afollestad.materialdialogs.DialogAction;
 import com.afollestad.materialdialogs.MaterialDialog;
@@ -17,6 +18,7 @@ import com.stardust.scriptdroid.R;
 import com.stardust.scriptdroid.autojs.AutoJs;
 import com.stardust.scriptdroid.external.floatingwindow.HoverMenuManger;
 import com.stardust.scriptdroid.external.floatingwindow.menu.HoverMenuService;
+import com.stardust.scriptdroid.ui.common.ProgressDialog;
 import com.stardust.view.accessibility.AccessibilityService;
 import com.stardust.scriptdroid.sublime.SublimePluginClient;
 import com.stardust.scriptdroid.sublime.SublimePluginService;
@@ -117,7 +119,7 @@ public class SideMenuFragment extends android.support.v4.app.Fragment {
     void setAutoOperateServiceEnable(CompoundButton button, boolean enable) {
         boolean isAccessibilityServiceEnabled = AccessibilityService.isEnabled(App.getApp());
         if (enable && !isAccessibilityServiceEnabled) {
-            AccessibilityServiceTool.enableAccessibilityService();
+            enableAccessibilityService();
         } else if (!enable && isAccessibilityServiceEnabled) {
             if (!AccessibilityService.disable()) {
                 AccessibilityServiceTool.goToAccessibilitySetting();
@@ -125,6 +127,30 @@ public class SideMenuFragment extends android.support.v4.app.Fragment {
         }
     }
 
+    private void enableAccessibilityService() {
+        if (!Pref.enableAccessibilityServiceByRoot()) {
+            AccessibilityServiceTool.goToAccessibilitySetting();
+            return;
+        }
+        final ProgressDialog progress = new ProgressDialog(getContext());
+        UnderuseExecutors.execute(new Runnable() {
+            @Override
+            public void run() {
+                final boolean succeed = AccessibilityServiceTool.enableAccessibilityServiceByRootAndWaitFor(4000);
+                getActivity().runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        if (!succeed) {
+                            Toast.makeText(getContext(), R.string.text_enable_accessibitliy_service_by_root_failed, Toast.LENGTH_SHORT).show();
+                            AccessibilityServiceTool.goToAccessibilitySetting();
+                        }
+                        progress.dismiss();
+                    }
+                });
+            }
+        });
+    }
+
     @CheckedChange(R.id.sw_floating_window)
     void setFloatingWindowEnable(CompoundButton button, boolean enable) {
         if (enable && !HoverMenuManger.isHoverMenuShowing()) {
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 517fee27..191ae18b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -209,6 +209,8 @@
     <string name="text_discard_record">放弃录制</string>
     <string name="text_inspect_failed">布局抓取失败，请关闭悬浮窗后动一下页面重试</string>
     <string name="script_anr">没有相应，要强制停止吗</string>
+    <string name="text_enable_accessibitliy_service_by_root_failed">使用root权限开启失败</string>
+    <string name="text_on_progress">处理中</string>
 
 
     <string-array name="record_control_keys">
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/EventEmitter.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/EventEmitter.java
index dacce47b..e10d8b4f 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/EventEmitter.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/EventEmitter.java
@@ -2,7 +2,8 @@ package com.stardust.autojs.runtime.api;
 
 import android.support.annotation.NonNull;
 
-import com.stardust.autojs.runtime.ScriptStopException;
+
+import com.stardust.autojs.runtime.ScriptException;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -38,7 +39,7 @@ public class EventEmitter {
 
         private void ensureListenersNotAtLimit() {
             if (mMaxListeners != 0 && mListenersMap.size() >= mMaxListeners) {
-                throw new ScriptStopException(new TooManyListenersException("max = " + mMaxListeners));
+                throw new ScriptException(new TooManyListenersException("max = " + mMaxListeners));
             }
         }
 
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java
index 36c533f7..97356ab6 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/Events.java
@@ -8,7 +8,7 @@ import android.util.SparseArray;
 import android.view.KeyEvent;
 
 import com.stardust.autojs.runtime.AccessibilityBridge;
-import com.stardust.autojs.runtime.ScriptStopException;
+import com.stardust.autojs.runtime.ScriptException;
 import com.stardust.autojs.runtime.record.inputevent.TouchObserver;
 import com.stardust.view.accessibility.AccessibilityService;
 import com.stardust.view.accessibility.OnKeyListener;
@@ -53,12 +53,12 @@ public class Events extends EventEmitter implements OnKeyListener, TouchObserver
         mAccessibilityBridge.ensureServiceEnabled();
         AccessibilityService service = mAccessibilityBridge.getService();
         if (service == null)
-            throw new ScriptStopException();
+            throw new ScriptException();
         service.getOnKeyObserver().addListener(this);
     }
 
     private void ensureHandler() {
-        if(mHandler == null){
+        if (mHandler == null) {
             mHandler = new Handler();
         }
     }
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/Loopers.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/Loopers.java
index e0676af4..e64b0ec4 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/Loopers.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/Loopers.java
@@ -82,7 +82,7 @@ public class Loopers {
     }
 
     public static void prepare() {
-        if(Looper.myLooper() == Looper.getMainLooper())
+        if (Looper.myLooper() == Looper.getMainLooper())
             return;
         if (Looper.myLooper() == null)
             Looper.prepare();
diff --git a/automator/src/main/java/com/stardust/view/accessibility/AccessibilityService.java b/automator/src/main/java/com/stardust/view/accessibility/AccessibilityService.java
index 2c373246..7d9170dc 100644
--- a/automator/src/main/java/com/stardust/view/accessibility/AccessibilityService.java
+++ b/automator/src/main/java/com/stardust/view/accessibility/AccessibilityService.java
@@ -150,12 +150,15 @@ public class AccessibilityService extends android.accessibilityservice.Accessibi
         return false;
     }
 
-    public static void waitForEnabled(long timeOut) {
+    public static boolean waitForEnabled(long timeOut) {
+        if (instance != null)
+            return true;
         LOCK.lock();
         try {
-            ENABLED.await(timeOut, TimeUnit.MILLISECONDS);
+            return ENABLED.await(timeOut, TimeUnit.MILLISECONDS);
         } catch (InterruptedException e) {
             e.printStackTrace();
+            return false;
         } finally {
             LOCK.unlock();
         }