diff --git a/app/src/main/assets/sample/界面/登录界面.js b/app/src/main/assets/sample/界面/登录界面.js
index 7b36b181..e2835844 100644
--- a/app/src/main/assets/sample/界面/登录界面.js
+++ b/app/src/main/assets/sample/界面/登录界面.js
@@ -1,11 +1,11 @@
 "ui";
 
-ui.statusBarColor("#000000")
 showLoginUI();
+ui.statusBarColor("#000000")
 
 //显示登录界面
 function showLoginUI(){
-    ui.layout(`
+    ui.layout(
       <frame>
         <vertical h="auto" align="center" margin="0 50">
           <linear>
@@ -22,7 +22,7 @@ function showLoginUI(){
           </linear>
         </vertical>
       </frame>
-    `);
+    );
 
     ui.login.click(() => {
        toast("您输入的用户名为" + ui.name.text() + " 密码为" + ui.password.text());
@@ -32,7 +32,7 @@ function showLoginUI(){
 
 //显示注册界面
 function showRegisterUI(){
-    ui.layout(`
+    ui.layout(
       <frame>
         <vertical h="auto" align="center" margin="0 50">
           <linear>
@@ -53,6 +53,6 @@ function showRegisterUI(){
           </linear>
         </vertical>
       </frame>
-    `);
+    );
     ui.cancel.click(() => showLoginUI());
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/stardust/scriptdroid/service/AccessibilityWatchDogService.java b/app/src/main/java/com/stardust/scriptdroid/service/AccessibilityWatchDogService.java
index e2a6e5be..a8a2c0da 100644
--- a/app/src/main/java/com/stardust/scriptdroid/service/AccessibilityWatchDogService.java
+++ b/app/src/main/java/com/stardust/scriptdroid/service/AccessibilityWatchDogService.java
@@ -1,10 +1,10 @@
 package com.stardust.scriptdroid.service;
 
+import android.content.Context;
 import android.os.Build;
 import android.util.Log;
 import android.view.accessibility.AccessibilityEvent;
 
-import com.stardust.scriptdroid.App;
 import com.stardust.scriptdroid.tool.AccessibilityServiceTool;
 import com.stardust.view.accessibility.AccessibilityDelegate;
 import com.stardust.view.accessibility.AccessibilityService;
@@ -39,8 +39,8 @@ public class AccessibilityWatchDogService extends AccessibilityService {
             eventTypes.addAll(set);
     }
 
-    public static boolean isEnable() {
-        return AccessibilityServiceUtils.isAccessibilityServiceEnabled(App.getApp(), AccessibilityWatchDogService.class);
+    public static boolean isEnable(Context context) {
+        return AccessibilityServiceUtils.isAccessibilityServiceEnabled(context, AccessibilityWatchDogService.class);
     }
 
     public static AccessibilityWatchDogService getInstance() {
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 59d681f6..08a0b608 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
@@ -88,7 +88,7 @@ public class SideMenuFragment extends Fragment {
                 mExecutor.execute(new Runnable() {
                     @Override
                     public void run() {
-                        final boolean checked = AccessibilityWatchDogService.isEnable();
+                        final boolean checked = AccessibilityWatchDogService.isEnable(getActivity());
                         mAccessibilityServiceSwitch.post(new Runnable() {
                             @Override
                             public void run() {
@@ -126,9 +126,10 @@ public class SideMenuFragment extends Fragment {
 
     @ViewBinding.Check(R.id.sw_auto_operate_service)
     private void setAutoOperateServiceEnable(boolean enable) {
-        if (enable && !AccessibilityWatchDogService.isEnable()) {
+        boolean isWatchDogServiceEnabled = AccessibilityWatchDogService.isEnable(getActivity());
+        if (enable && !isWatchDogServiceEnabled) {
             AccessibilityServiceTool.enableAccessibilityService();
-        } else if (!enable && AccessibilityWatchDogService.isEnable()) {
+        } else if (!enable && isWatchDogServiceEnabled) {
             AccessibilityWatchDogService.disable();
         }
     }
diff --git a/autojs/src/main/assets/modules/__ui__.js b/autojs/src/main/assets/modules/__ui__.js
index fb274637..11bd3810 100644
--- a/autojs/src/main/assets/modules/__ui__.js
+++ b/autojs/src/main/assets/modules/__ui__.js
@@ -3,7 +3,7 @@ module.exports = function(__runtime__, scope){
     ui.__id_cache__ = {};
 
     ui.layout = function(xml){
-        view = ui.inflate(activity, xml);
+        view = ui.inflate(activity, xml.toString());
         ui.setContentView(view);
     }
 
@@ -14,6 +14,8 @@ module.exports = function(__runtime__, scope){
     }
 
     ui.id = function(id){
+        if(!ui.view)
+            return null;
         var v = ui.view.getChildAt(0).id(id);
         if(v){
             v = decorate(v);
@@ -67,7 +69,7 @@ module.exports = function(__runtime__, scope){
              ui[name] = value;
          },
          get: function(name, start) {
-            if(!ui[name]){
+            if(!ui[name] && ui.view){
                 var cacheView = ui.__id_cache__[name];
                 if(cacheView){
                     return cacheView;
diff --git a/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java b/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java
index a59bb8db..12c3ab6e 100644
--- a/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java
+++ b/autojs/src/main/java/com/stardust/autojs/engine/RhinoJavaScriptEngine.java
@@ -2,6 +2,7 @@ package com.stardust.autojs.engine;
 
 import android.util.Log;
 
+import com.stardust.autojs.engine.preprocess.MultiLinePreprocessor;
 import com.stardust.autojs.engine.preprocess.Preprocessor;
 import com.stardust.autojs.rhino_android.AndroidContextFactory;
 import com.stardust.autojs.rhino_android.RhinoAndroidHelper;
@@ -17,11 +18,9 @@ import org.mozilla.javascript.ScriptableObject;
 import org.mozilla.javascript.commonjs.module.RequireBuilder;
 import org.mozilla.javascript.commonjs.module.provider.SoftCachingModuleScriptProvider;
 
-import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
 import java.io.Reader;
-import java.io.StringReader;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.List;
@@ -35,7 +34,6 @@ import java.util.concurrent.ConcurrentHashMap;
 public class RhinoJavaScriptEngine implements ScriptEngine {
 
     private static final String LOG_TAG = "RhinoJavaScriptEngine";
-    private static final Preprocessor PREPROCESSOR = new MultiLinePreprocessor();
 
     private static int contextCount = 0;
     private String[] mRequirePath = new String[0];
@@ -69,8 +67,8 @@ public class RhinoJavaScriptEngine implements ScriptEngine {
         }
     }
 
-    private Reader preprocess(Reader script) throws IOException {
-        return PREPROCESSOR.preprocess(script);
+    protected Reader preprocess(Reader script) throws IOException {
+        return script;
     }
 
     @Override
diff --git a/autojs/src/main/java/com/stardust/autojs/engine/MultiLinePreprocessor.java b/autojs/src/main/java/com/stardust/autojs/engine/preprocess/MultiLinePreprocessor.java
similarity index 98%
rename from autojs/src/main/java/com/stardust/autojs/engine/MultiLinePreprocessor.java
rename to autojs/src/main/java/com/stardust/autojs/engine/preprocess/MultiLinePreprocessor.java
index fab49337..c8564e93 100644
--- a/autojs/src/main/java/com/stardust/autojs/engine/MultiLinePreprocessor.java
+++ b/autojs/src/main/java/com/stardust/autojs/engine/preprocess/MultiLinePreprocessor.java
@@ -1,4 +1,4 @@
-package com.stardust.autojs.engine;
+package com.stardust.autojs.engine.preprocess;
 
 import android.support.annotation.VisibleForTesting;
 
diff --git a/autojs/src/test/java/com/stardust/autojs/engine/MultiLinePreprocessorTest.java b/autojs/src/test/java/com/stardust/autojs/engine/MultiLinePreprocessorTest.java
index c6f49639..5b8e4693 100644
--- a/autojs/src/test/java/com/stardust/autojs/engine/MultiLinePreprocessorTest.java
+++ b/autojs/src/test/java/com/stardust/autojs/engine/MultiLinePreprocessorTest.java
@@ -1,13 +1,12 @@
 package com.stardust.autojs.engine;
 
+import com.stardust.autojs.engine.preprocess.MultiLinePreprocessor;
+
 import org.junit.Test;
 
 import java.io.Reader;
 import java.io.StringReader;
 
-import static org.junit.Assert.*;
-import static com.stardust.autojs.engine.MultiLinePreprocessor.*;
-
 /**
  * Created by Stardust on 2017/5/15.
  */