diff --git a/autojs/src/main/assets/jvm-npm.js b/autojs/src/main/assets/jvm-npm.js
index 25de71e6..4f7c81ef 100644
--- a/autojs/src/main/assets/jvm-npm.js
+++ b/autojs/src/main/assets/jvm-npm.js
@@ -78,6 +78,9 @@ module = (typeof module === 'undefined') ? {} : module;
     if(builtInModules.indexOf(normalizePath) >= 0 && !files.exists(normalizePath)){
         return NativeRequire.require(normalizePath);
     }
+    if(id === "events"){
+        return events;
+    }
     if(id.startsWith("http://") || id.startsWith("https://")){
         return NativeRequire.require(id);
     }
@@ -252,6 +255,9 @@ module = (typeof module === 'undefined') ? {} : module;
   }
 
   function normalizeName (fileName, ext) {
+    if(fileName.endsWith('.json')){
+        return fileName;
+    }
     var extension = ext || '.js';
     if (fileName.endsWith(extension)) {
       return fileName;
diff --git a/autojs/src/main/assets/modules/__images__.js b/autojs/src/main/assets/modules/__images__.js
index f5228245..e11814cc 100644
--- a/autojs/src/main/assets/modules/__images__.js
+++ b/autojs/src/main/assets/modules/__images__.js
@@ -169,7 +169,23 @@ module.exports = function(__runtime__, scope){
        format = format || "png";
        quality = quality == undefined ? 100 : quality;
        return rtImages.toBytes(img, format, quality);
- }
+  }
+
+  images.readPixels = function(path){
+     var img = images.read(path);
+     var bitmap = img.getBitmap();
+     var w = bitmap.getWidth();
+     var h = bitmap.getHeight();
+     var pixels = util.java.array("int", w * h);
+     bitmap.getPixels(pixels, 0, w, 0, 0, w, h);
+     img.recycle();
+     return {
+        data: pixels,
+        width: w,
+        height: h
+     };
+  }
+
 
    function getColorDetector(color, algorithm, threshold){
           switch(algorithm){
diff --git a/autojs/src/main/assets/modules/__java_util__.js b/autojs/src/main/assets/modules/__java_util__.js
index 3a97e5d4..9fe8feba 100644
--- a/autojs/src/main/assets/modules/__java_util__.js
+++ b/autojs/src/main/assets/modules/__java_util__.js
@@ -4,6 +4,32 @@ J.instanceOf = function(obj, clazz){
     return java.lang.Class.forName(clazz).isAssignableFrom(obj.getClass());
 }
 
+function typeToClass(type) {
+    if (typeof(type) != 'string') {
+        return type;
+    }
+    var types = {
+        "int": "Integer",
+        "long": "Long",
+        "string": "String",
+        "double": "Double",
+        "char": "Character",
+        "byte": "Byte",
+        "float": "Float"
+    };
+    if (types[type]) {
+        return Packages["java.lang." + types[type]].TYPE;
+    }
+    return Packages[type];
+}
 
+function array(type) {
+    var clazz = typeToClass(type);
+    var args = arguments;
+    args[0] = clazz;
+    return java.lang.reflect.Array.newInstance.apply(null, args);
+}
+
+J.array = array;
 
 module.exports = J;
\ No newline at end of file
diff --git a/autojs/src/main/assets/modules/__ui__.js b/autojs/src/main/assets/modules/__ui__.js
index 91ad4f18..d5b6e446 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, global) {
     require("object-observe-lite.min")();
     require("array-observe.min")();
 
-    var J = require("__java_util__");
+    var J = util.java;
 
 
     var ui = {};
diff --git a/autojs/src/main/assets/modules/__util__.js b/autojs/src/main/assets/modules/__util__.js
index 59b8083b..ec6d0115 100644
--- a/autojs/src/main/assets/modules/__util__.js
+++ b/autojs/src/main/assets/modules/__util__.js
@@ -20,6 +20,7 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 var formatRegExp = /%[sdj%]/g;
+exports.java = require("__java_util__");
 exports.format = function(f) {
   if (!isString(f)) {
     var objects = [];
diff --git a/autojs/src/main/java/com/stardust/autojs/rhino/AndroidClassLoader.java b/autojs/src/main/java/com/stardust/autojs/rhino/AndroidClassLoader.java
index 163927c8..0fec757b 100644
--- a/autojs/src/main/java/com/stardust/autojs/rhino/AndroidClassLoader.java
+++ b/autojs/src/main/java/com/stardust/autojs/rhino/AndroidClassLoader.java
@@ -15,6 +15,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
+import dalvik.system.DexClassLoader;
 import dalvik.system.DexFile;
 
 /**
@@ -25,10 +26,11 @@ public class AndroidClassLoader extends ClassLoader implements GeneratedClassLoa
 
 
     private final ClassLoader parent;
-    private List<DexFile> dx;
+    private List<DexClassLoader> dx;
     private final File dexFile;
     private final File odexOatFile;
     private final File classFile;
+    private final File mCacheDir;
 
     /**
      * Create a new instance with the given parent classloader and cache dierctory
@@ -38,6 +40,7 @@ public class AndroidClassLoader extends ClassLoader implements GeneratedClassLoa
      */
     public AndroidClassLoader(ClassLoader parent, File dir) {
         this.parent = parent;
+        mCacheDir = dir;
         dx = new ArrayList<>();
         dexFile = new File(dir, "dex-" + hashCode() + ".jar");
         odexOatFile = new File(dir, "odex_oat-" + hashCode() + ".tmp");
@@ -56,8 +59,8 @@ public class AndroidClassLoader extends ClassLoader implements GeneratedClassLoa
             parameters.setFileNameInZip(name.replace('.', '/') + ".class");
             parameters.setSourceExternalStream(true);
             zipFile.addStream(new ByteArrayInputStream(data), parameters);
-            return dexJar().loadClass(name, parent);
-        } catch (IOException | ZipException e) {
+            return dexJar().loadClass(name);
+        } catch (IOException | ZipException | ClassNotFoundException e) {
             throw new FatalLoadingException(e);
         } finally {
             dexFile.delete();
@@ -87,7 +90,13 @@ public class AndroidClassLoader extends ClassLoader implements GeneratedClassLoa
         }
     }
 
-    private DexFile dexJar() throws IOException {
+    public DexClassLoader loadDex(File file) throws IOException {
+        DexClassLoader loader = new DexClassLoader(file.getPath(), mCacheDir.getPath(), null, parent);
+        dx.add(loader);
+        return loader;
+    }
+
+    private DexClassLoader dexJar() throws IOException {
         if (!classFile.exists()) {
             classFile.createNewFile();
         }
@@ -96,9 +105,7 @@ public class AndroidClassLoader extends ClassLoader implements GeneratedClassLoa
         arguments.outName = dexFile.getPath();
         arguments.jarOutput = true;
         Main.run(arguments);
-        DexFile dex = DexFile.loadDex(dexFile.getPath(), odexOatFile.getPath(), 0);
-        dx.add(dex);
-        return dex;
+        return loadDex(dexFile);
     }
 
     /**
@@ -124,8 +131,8 @@ public class AndroidClassLoader extends ClassLoader implements GeneratedClassLoa
             throws ClassNotFoundException {
         Class<?> loadedClass = findLoadedClass(name);
         if (loadedClass == null) {
-            for (DexFile dex : dx) {
-                loadedClass = dex.loadClass(name, parent);
+            for (DexClassLoader dex : dx) {
+                loadedClass = dex.loadClass(name);
                 if (loadedClass != null) {
                     break;
                 }
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java b/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java
index b90069d5..d8ef9979 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/ScriptRuntime.java
@@ -332,6 +332,14 @@ public class ScriptRuntime {
         }
     }
 
+    public void loadDex(String path){
+        try {
+            ((AndroidClassLoader) ContextFactory.getGlobal().getApplicationClassLoader()).loadDex(new File(path));
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
     public void exit() {
         mThread.interrupt();
         if (Looper.myLooper() != Looper.getMainLooper()) {