diff --git a/.idea/modules.xml b/.idea/modules.xml
index 4fac18b4..7e950955 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -2,8 +2,8 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
+      <module fileurl="file://$PROJECT_DIR$/Auto.js.iml" filepath="$PROJECT_DIR$/Auto.js.iml" />
       <module fileurl="file://E:\YiBin\AndroidStudioProjects\NoRootScriptDroid\Auto.js.iml" filepath="E:\YiBin\AndroidStudioProjects\NoRootScriptDroid\Auto.js.iml" />
-      <module fileurl="file://$PROJECT_DIR$/NoRootScriptDroid.iml" filepath="$PROJECT_DIR$/NoRootScriptDroid.iml" />
       <module fileurl="file://C:\Users\Stardust\Documents\AndroidProjects\Auto.js\NoRootScriptDroid.iml" filepath="C:\Users\Stardust\Documents\AndroidProjects\Auto.js\NoRootScriptDroid.iml" />
       <module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
       <module fileurl="file://$PROJECT_DIR$/autojs/autojs.iml" filepath="$PROJECT_DIR$/autojs/autojs.iml" />
diff --git a/autojs/src/main/java/com/stardust/autojs/core/looper/Timer.java b/autojs/src/main/java/com/stardust/autojs/core/looper/Timer.java
index 765318a0..1e3ab11d 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/looper/Timer.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/looper/Timer.java
@@ -1,6 +1,7 @@
 package com.stardust.autojs.core.looper;
 
 import android.os.Handler;
+import android.os.Looper;
 import android.os.SystemClock;
 import android.util.Log;
 import android.util.SparseArray;
@@ -27,15 +28,18 @@ public class Timer {
         mBridges = bridges;
         mMaxCallbackMillisForAllThread = maxCallbackMillisForAllThread;
         mHandler = new Handler();
-        Log.d(LOG_TAG, "Timer: handler = " + mHandler + ", thread = " + Thread.currentThread());
+    }
+
+    public Timer(ScriptBridges bridges, VolatileBox<Long> maxCallbackMillisForAllThread, Looper looper) {
+        mBridges = bridges;
+        mMaxCallbackMillisForAllThread = maxCallbackMillisForAllThread;
+        mHandler = new Handler(looper);
     }
 
     public int setTimeout(final Object callback, final long delay, final Object... args) {
-        Log.d(LOG_TAG, "setTimeout: handler = " + mHandler);
         mCallbackMaxId++;
         final int id = mCallbackMaxId;
         Runnable r = () -> {
-            Log.d(LOG_TAG, "callFunction: handler = " + mHandler);
             mBridges.callFunction(callback, null, args);
             mHandlerCallbacks.remove(id);
         };
@@ -105,8 +109,6 @@ public class Timer {
     }
 
     public boolean hasPendingCallbacks() {
-        Log.d(LOG_TAG, "[thread]hasPendingCallbacks:" + (mMaxCallbackUptimeMillis > SystemClock.uptimeMillis()));
-        Log.d(LOG_TAG, "mMaxCallbackUptimeMillisForAllThreads:" + mMaxCallbackUptimeMillis);
         return mMaxCallbackUptimeMillis > SystemClock.uptimeMillis();
     }
 
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/Timers.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/Timers.java
index bce4b6e1..bffd3361 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/Timers.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/Timers.java
@@ -1,6 +1,7 @@
 package com.stardust.autojs.runtime.api;
 
 import android.os.Handler;
+import android.os.Looper;
 import android.os.SystemClock;
 import android.util.Log;
 import android.util.SparseArray;
@@ -21,10 +22,12 @@ public class Timers {
     private VolatileBox<Long> mMaxCallbackUptimeMillisForAllThreads = new VolatileBox<>(0L);
     private Threads mThreads;
     private Timer mMainTimer;
+    private Timer mUiTimer;
 
 
     public Timers(ScriptBridges bridges, Threads threads) {
         mMainTimer = new Timer(bridges, mMaxCallbackUptimeMillisForAllThreads);
+        mUiTimer = new Timer(bridges, mMaxCallbackUptimeMillisForAllThreads, Looper.getMainLooper());
         mThreads = threads;
     }
 
@@ -44,7 +47,11 @@ public class Timers {
         if (thread == mThreads.getMainThread()) {
             return mMainTimer;
         }
-        return TimerThread.getTimerForThread(thread);
+        Timer timer = TimerThread.getTimerForThread(thread);
+        if (timer == null && Looper.myLooper() == Looper.getMainLooper()) {
+            return mUiTimer;
+        }
+        return timer;
     }
 
     public int setTimeout(Object callback, long delay, Object... args) {