diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 3f83a0aa..2d86227e 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -14,6 +14,8 @@
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.MANAGE_NETWORK_POLICY"
+        tools:ignore="ProtectedPermissions" />
     <uses-permission
         android:name="android.permission.READ_PRIVILEGED_PHONE_STATE"
         tools:ignore="ProtectedPermissions" />
diff --git a/common/src/main/java/com/xypower/common/FilesUtils.java b/common/src/main/java/com/xypower/common/FilesUtils.java
index cca56fa6..1b890b09 100644
--- a/common/src/main/java/com/xypower/common/FilesUtils.java
+++ b/common/src/main/java/com/xypower/common/FilesUtils.java
@@ -1,5 +1,7 @@
 package com.xypower.common;
 
+import android.content.Context;
+import android.content.res.AssetManager;
 import android.text.TextUtils;
 
 import org.w3c.dom.Text;
@@ -320,4 +322,83 @@ public class FilesUtils {
         }
     }
 
+    public static void copyAssetsDir(Context context, String directory, String destPath) {
+        try {
+            AssetManager assetManager = context.getAssets();
+            String[] fileList = assetManager.list(directory);
+            if (fileList != null && fileList.length > 0) {
+                File file = new File(destPath);
+                if (!file.exists()) {
+                    file.mkdirs();
+                }
+
+                if (!directory.endsWith(File.separator)) {
+                    directory += File.separator;
+                }
+                if (!destPath.endsWith(File.separator)) {
+                    destPath += File.separator;
+                }
+
+                for (String fileName : fileList) {
+                    copyAssetsDir(context, directory + fileName, destPath + fileName);
+                }
+            } else {
+                // Try to file
+                copyAssetsFile(context, directory, destPath);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        //  else {//如果是文件
+        //                InputStream inputStream=context.getAssets().open(filePath);
+        //                File file=new File(context.getFilesDir().getAbsolutePath()+ File.separator+filePath);
+        //                Log.i("copyAssets2Phone","file:"+file);
+        //                if(!file.exists() || file.length()==0) {
+        //                    FileOutputStream fos=new FileOutputStream(file);
+        //                    int len=-1;
+        //                    byte[] buffer=new byte[1024];
+        //                    while ((len=inputStream.read(buffer))!=-1){
+        //                        fos.write(buffer,0,len);
+        //                    }
+        //                    fos.flush();
+        //                    inputStream.close();
+        //                    fos.close();
+        //                    showToast(context,"模型文件复制完毕");
+        //                } else {
+        //                    showToast(context,"模型文件已存在，无需复制");
+        //                }
+        //            }
+    }
+
+
+    public static void copyAssetsFile(Context context, String fileName, String destPath) {
+        InputStream inputStream = null;
+        FileOutputStream fos = null;
+        try {
+            inputStream = context.getAssets().open(fileName);
+            //getFilesDir() 获得当前APP的安装路径 /data/data/包名/files 目录
+            File file = new File(destPath);
+            if (file.exists()) {
+                file.delete();
+            }
+
+            fos = new FileOutputStream(file);
+            int len = -1;
+            byte[] buffer = new byte[1024];
+            while ((len = inputStream.read(buffer)) != -1) {
+                try {
+                    fos.write(buffer, 0, len);
+                } catch (Exception ex) {
+                    ex.printStackTrace();
+                }
+            }
+            fos.flush();
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            FilesUtils.closeFriendly(inputStream);
+            FilesUtils.closeFriendly(fos);
+        }
+    }
 }