diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d861c3fe..2aadea9b 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -14,6 +14,7 @@
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
     <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
 
 
     <!-- 非Auto.js运行必需，不会主动申请，某些脚本可以自行申请-->
@@ -116,8 +117,8 @@
                 <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
             </intent-filter>
             <intent-filter>
-                <action android:name="android.intent.action.CREATE_SHORTCUT" />
-                <category android:name="android.intent.category.DEFAULT" />
+                <action android:name="android.intent.action.CREATE_SHORTCUT"/>
+                <category android:name="android.intent.category.DEFAULT"/>
             </intent-filter>
         </activity>
 
diff --git a/app/src/main/assets/sample/复杂界面/音乐浏览器.js b/app/src/main/assets/sample/复杂界面/音乐浏览器.js
index f3d6f949..0664fbdc 100644
--- a/app/src/main/assets/sample/复杂界面/音乐浏览器.js
+++ b/app/src/main/assets/sample/复杂界面/音乐浏览器.js
@@ -1,20 +1,39 @@
 "ui";
 
-//音乐文件的后缀名
-var musicExts = [".mp3", ".wma", ".rm", ".wav", ".mid", ".ape", ".flac"];
-//扫描路径
-var path = files.getSdcardPath();
-//保存音乐文件列表的数组
-var musicFiles = [];
+var IconView = (function() {
+    //继承ui.Widget
+    util.extend(IconView, ui.Widget);
+
+    function IconView() {
+        //调用父类构造函数
+        ui.Widget.call(this);
+        //自定义属性color，定义按钮颜色
+        this.defineAttr("icon", (view, name, defaultGetter) => {
+            return this._icon;
+        }, (view, name, value, defaultSetter) => {
+            this._icon = value;
+            view.setImageResource(value);
+        });
+    }
+    IconView.prototype.render = function() {
+        return (
+            <img />
+        );
+    }
+    ui.registerWidget("icon", IconView);
+    return IconView;
+})();
+
+var apps = [];
 
 ui.layout(
     <vertical  bg="#ffffff">
         <list id="files" layout_weight="1">
             <linear bg="?selectableItemBackground">
-                <img src="@drawable/ic_music_note_black_48dp" tint="white" bg="#ff5722" w="50" h="70" margin="16" />
+                <icon icon="{{this.icon}}" w="50" h="70" margin="16" />
                 <vertical>
-                    <text id="name" textSize="16sp" textColor="#000000" text="{{this.name}}" marginTop="16" maxLines="1" ellipsize="end"/>
-                    <text id="path" textSize="13sp" textColor="#929292" text="{{this.path}}" marginTop="8" maxLines="1" ellipsize="end"/>
+                    <text id="name" textSize="16sp" textColor="#000000" text="{{this.appName}}" marginTop="16" maxLines="1" ellipsize="end"/>
+                    <text id="path" textSize="13sp" textColor="#929292" text="{{this.packageName}}" marginTop="8" maxLines="1" ellipsize="end"/>
                 </vertical>
             </linear>
         </list>
@@ -22,38 +41,31 @@ ui.layout(
     </vertical>
 );
 
-ui.files.setDataSource(musicFiles);
+ui.apps.setDataSource(musicFiles);
 
-ui.files.on("item_click", function(item, pos){
-    media.playMusic(item.path, 1);
+ui.apps.on("item_click", function(item, pos){
+    toast(item);
 });
 
 //启动线程来扫描音乐文件
 threads.start(function () {
-    listMuiscFiles(path, musicFiles);
+    listApps(apps);
     ui.run(()=> {
         ui.progressbar.setVisility(8);
     });
 });
 
-function listMuiscFiles(dir, list) {
-    //遍历该文件夹的文件
-    files.listDir(dir).forEach(fileName => {
-        var path = files.join(dir, fileName);
-        //如果是子文件夹则继续扫描子文件夹的文件
-        if (files.isDir(path)) {
-            listMuiscFiles(path, list);
-            return;
-        }
-        for (var i = 0; i < musicExts.length; i++) {
-            //如果文件名的后缀是音乐格式
-            if (fileName.endsWith(musicExts[i])) {
-                //则把它添加到列表中
-                list.push({
-                    name: fileName,
-                    path: path
-                });
-            }
-        }
-    });
+function listApps(apps) {
+    var pm = context.getPackageManager();
+    let list = pm.getInstalledPackages(0);
+    for(let i = 0; i < list.size(); i++){
+        let p = list.get(i);
+        apps.push({
+            appName: p.applicationInfo.loadLabel(pm).toString(),
+            packageName: p.packageName,
+            versionName: p.versionName,
+            versionCode: p.versionCode,
+            icon: p.applicationInfo.loadIcon(pm)
+        });
+    }
 }
\ No newline at end of file
diff --git a/autojs/src/main/java/com/stardust/autojs/core/http/MutableOkHttp.java b/autojs/src/main/java/com/stardust/autojs/core/http/MutableOkHttp.java
index b9245367..f80c5ed5 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/http/MutableOkHttp.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/http/MutableOkHttp.java
@@ -1,10 +1,5 @@
 package com.stardust.autojs.core.http;
 
-import android.widget.AdapterView;
-
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.Proxy;
 import java.util.Collections;
 import java.util.concurrent.TimeUnit;
 
diff --git a/autojs/src/main/java/com/stardust/autojs/core/image/capture/ScreenCapturer.java b/autojs/src/main/java/com/stardust/autojs/core/image/capture/ScreenCapturer.java
index a0f5e064..2b04cbae 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/image/capture/ScreenCapturer.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/image/capture/ScreenCapturer.java
@@ -21,6 +21,7 @@ import android.view.OrientationEventListener;
 
 import com.stardust.autojs.runtime.exception.ScriptException;
 import com.stardust.autojs.runtime.exception.ScriptInterruptedException;
+import com.stardust.lang.ThreadCompat;
 import com.stardust.util.ScreenMetrics;
 
 import java.util.concurrent.atomic.AtomicReference;
@@ -152,7 +153,8 @@ public class ScreenCapturer {
             mException = null;
             throw new ScriptException(e);
         }
-        while (true) {
+        Thread thread = ThreadCompat.currentThread();
+        while (!thread.isInterrupted()) {
             Image cachedImage = mCachedImage.getAndSet(null);
             if (cachedImage != null) {
                 if (mUnderUsingImage != null) {
@@ -162,6 +164,7 @@ public class ScreenCapturer {
                 return cachedImage;
             }
         }
+        throw new ScriptInterruptedException();
     }
 
     public int getScreenDensity() {
diff --git a/common/release/output.json b/common/release/output.json
index 0bed4d9b..2ec12d7a 100644
--- a/common/release/output.json
+++ b/common/release/output.json
@@ -1 +1 @@
-[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":436,"versionName":"4.0.4 Alpha7","enabled":true,"outputFile":"commonRelease-4.0.4 Alpha7.apk","fullName":"commonRelease","baseName":"common-release"},"path":"commonRelease-4.0.4 Alpha7.apk","properties":{}}]
\ No newline at end of file
+[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":437,"versionName":"4.0.4 Alpha8","enabled":true,"outputFile":"commonRelease-4.0.4 Alpha8.apk","fullName":"commonRelease","baseName":"common-release"},"path":"commonRelease-4.0.4 Alpha8.apk","properties":{}}]
\ No newline at end of file
diff --git a/project-versions.json b/project-versions.json
index 54411dcc..80e0fb64 100644
--- a/project-versions.json
+++ b/project-versions.json
@@ -1,6 +1,6 @@
 {
-    "appVersionCode": 436,
-    "appVersionName": "4.0.4 Alpha7",
+    "appVersionCode": 437,
+    "appVersionName": "4.0.4 Alpha8",
     "target": 28,
     "mini": 17,
     "compile": 28,