diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index ca222124..5355f78d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -54,7 +54,7 @@
     <uses-permission android:name="android.permission.SEND_SMS" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
-    <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
+    <uses-permission android:name="android.permission.DISABLE_KEYGUARD" />
     <uses-permission
         android:name="android.permission.DEVICE_POWER"
         tools:ignore="ProtectedPermissions" />
@@ -74,6 +74,7 @@
 
     <application
         android:dataExtractionRules="@xml/data_extraction_rules"
+        android:extractNativeLibs="true"
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -81,9 +82,12 @@
         android:requestLegacyExternalStorage="true"
         android:supportsRtl="true"
         android:theme="@style/Theme.MicroPhoto"
-        android:extractNativeLibs="true"
-
         tools:targetApi="28">
+        <service
+            android:name=".BridgeService"
+            android:enabled="true"
+            android:exported="true"></service>
+
         <activity
             android:name=".BridgeActivity"
             android:exported="true" />
@@ -94,17 +98,11 @@
         <activity
             android:name=".v2.Camera2VideoActivityOld"
             android:exported="false"
-            android:screenOrientation="landscape"
-
-            />
-
+            android:screenOrientation="landscape" />
         <activity
             android:name=".v2.Camera2VideoActivity"
             android:exported="false"
-            android:screenOrientation="landscape"
-
-            />
-
+            android:screenOrientation="landscape" />
         <activity
             android:name=".ChannelActivity"
             android:exported="false"
diff --git a/app/src/main/java/com/xypower/mpapp/BridgeActivity.java b/app/src/main/java/com/xypower/mpapp/BridgeActivity.java
index fa1941f8..9ea31d78 100644
--- a/app/src/main/java/com/xypower/mpapp/BridgeActivity.java
+++ b/app/src/main/java/com/xypower/mpapp/BridgeActivity.java
@@ -1,16 +1,14 @@
 package com.xypower.mpapp;
 
-import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
-
 import androidx.appcompat.app.AppCompatActivity;
 
 import android.app.Activity;
 import android.content.Intent;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.text.TextUtils;
 import android.util.Base64;
+import android.util.Log;
 
 import com.xypower.common.FileUtils;
 import com.xypower.common.JSONUtils;
@@ -21,10 +19,11 @@ import org.json.JSONObject;
 
 import java.io.File;
 
-import java.nio.file.Files;
 
 public class BridgeActivity extends AppCompatActivity {
 
+    private final static String TAG = "MPLOG";
+
     private final static String ACTION_IMP_PUBKEY = "imp_pubkey";
     private final static String ACTION_GEN_KEYS = "gen_keys";
     private final static String ACTION_CERT_REQ = "cert_req";
@@ -201,6 +200,7 @@ public class BridgeActivity extends AppCompatActivity {
             mHandler.postDelayed(new Runnable() {
                 @Override
                 public void run() {
+                    Log.i(TAG, "BridgeActivity will finish automatically");
                     activity.finish();
                 }
             }, 2000);
diff --git a/app/src/main/java/com/xypower/mpapp/BridgeService.java b/app/src/main/java/com/xypower/mpapp/BridgeService.java
new file mode 100644
index 00000000..21d1672f
--- /dev/null
+++ b/app/src/main/java/com/xypower/mpapp/BridgeService.java
@@ -0,0 +1,236 @@
+package com.xypower.mpapp;
+
+import android.app.Service;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.IBinder;
+import android.text.TextUtils;
+import android.util.Base64;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+
+import com.xypower.common.FileUtils;
+import com.xypower.common.JSONUtils;
+import com.xypower.common.MicroPhotoContext;
+import com.xypower.mpapp.v2.Camera2VideoActivity;
+
+import org.json.JSONObject;
+
+import java.io.File;
+
+
+public class BridgeService extends Service {
+
+    private final static String TAG = "MPLOG";
+
+    private final static String ACTION_IMP_PUBKEY = "imp_pubkey";
+    private final static String ACTION_GEN_KEYS = "gen_keys";
+    private final static String ACTION_CERT_REQ = "cert_req";
+    private final static String ACTION_BATTERY_VOLTAGE = "query_bv";
+    private final static String ACTION_RECORDING = "recording";
+    private final static String ACTION_TAKE_PHOTO = "take_photo";
+
+    private final static int REQUEST_CODE_RECORDING = Camera2VideoActivity.REQUEST_CODE_RECORDING;
+
+    private Handler mHandler = null;
+    private boolean m3V3TurnedOn = false;
+    private boolean mAutoClose = true;
+
+    private String mVideoFilePath = null;
+
+    public BridgeService() {
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+
+        mHandler = new Handler();
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        if (intent == null) {
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+
+        final String action = intent.getStringExtra("action");
+        if (!TextUtils.isEmpty(action)) {
+            if (TextUtils.equals(action, ACTION_IMP_PUBKEY)) {
+                String cert = intent.getStringExtra("cert");
+                String path = intent.getStringExtra("path");
+                int index = intent.getIntExtra("index", 1);
+
+                if (!TextUtils.isEmpty(cert)) {
+                    // Import
+                    // String cert = intent.getStringExtra("md5");
+                    byte[] content = Base64.decode(cert, Base64.DEFAULT);
+                    if (content != null) {
+                        MicroPhotoService.importPublicKey(index, content);
+                    }
+                } else if (TextUtils.isEmpty(path)) {
+                    String md5 = intent.getStringExtra("md5");
+                    File file = new File(path);
+                    if (file.exists() && file.isFile()) {
+                        MicroPhotoService.importPublicKeyFile(index, path, md5);
+                    }
+                }
+            } else if (TextUtils.equals(action, ACTION_GEN_KEYS)) {
+                int index = intent.getIntExtra("index", 0);
+                boolean res = MicroPhotoService.genKeys(index);
+                String path = intent.getStringExtra("path");
+                if (!TextUtils.isEmpty(path)) {
+                    FileUtils.ensureParentDirectoryExisted(path);
+                    FileUtils.writeTextFile(path, res ? "1" : "0");
+                }
+            } else if (TextUtils.equals(action, ACTION_CERT_REQ)) {
+                int index = intent.getIntExtra("index", 0);
+                int type = intent.getIntExtra("type", 0);
+                String subject = intent.getStringExtra("subject");
+                String path = intent.getStringExtra("path");
+                MicroPhotoService.genCertRequest(index, type, subject, path);
+            } else if (TextUtils.equals(action, ACTION_BATTERY_VOLTAGE)) {
+                String path = intent.getStringExtra("path");
+                // #define CMD_GET_CHARGING_BUS_VOLTAGE_STATE      112
+                // #define CMD_GET_BAT_VOL_STATE                   115
+                // #define CMD_GET_BAT_BUS_VOLTAGE_STATE           117
+                int bv = MicroPhotoService.getGpioInt(117);
+                int bcv = MicroPhotoService.getGpioInt(112);
+                if (!TextUtils.isEmpty(path)) {
+                    FileUtils.ensureParentDirectoryExisted(path);
+                    FileUtils.writeTextFile(path + ".tmp", Integer.toString(bv) + " " + Integer.toString(bcv));
+                    File file = new File(path + ".tmp");
+                    file.renameTo(new File(path));
+                }
+            } else if (TextUtils.equals(action, ACTION_TAKE_PHOTO)) {
+                String path = intent.getStringExtra("path");
+                int channel = intent.getIntExtra("channel", 1);
+                int preset = intent.getIntExtra("preset", 0xFF);
+
+                int width = intent.getIntExtra("width", 0);
+                int height = intent.getIntExtra("height", 0);
+
+                String leftTopOsd = intent.getStringExtra("leftTopOsd");
+                String rightTopOsd = intent.getStringExtra("rightTopOsd");
+                String rightBottomOsd = intent.getStringExtra("rightBottomOsd");
+                String leftBottomOsd = intent.getStringExtra("leftBottomOsd");
+
+                String appPath = MicroPhotoContext.buildMpAppDir(getApplicationContext());
+                File configFile = new File(appPath);
+                configFile = new File(configFile, "data/channels/" + Integer.toString(channel) + ".json");
+
+                File tmpConfigFile = new File(appPath);
+                tmpConfigFile = new File(tmpConfigFile, "tmp/" + Integer.toString(channel) + "-" + Long.toString(System.currentTimeMillis()) + ".json");
+
+                if (configFile.exists()) {
+                    try {
+
+                        FileUtils.copyFile(configFile, tmpConfigFile);
+
+                    } catch (Exception ex) {
+                        ex.printStackTrace();
+                    }
+                }
+
+                JSONObject configJson = JSONUtils.loadJson(tmpConfigFile.getAbsolutePath());
+                try {
+                    if (configJson == null) {
+                        configJson = new JSONObject();
+                    }
+                    if (width > 0) {
+                        configJson.put("resolutionCX", width);
+                    }
+                    if (height > 0) {
+                        configJson.put("resolutionCY", height);
+                    }
+
+                    JSONObject osdJson = configJson.getJSONObject("osd");
+                    if (osdJson == null) {
+                        osdJson = configJson.put("osd", new JSONObject());
+                    }
+                    osdJson.put("leftTop", TextUtils.isEmpty(leftTopOsd) ? "" : leftTopOsd);
+                    osdJson.put("rightTop", TextUtils.isEmpty(rightTopOsd) ? "" : rightTopOsd);
+                    osdJson.put("rightBottom", TextUtils.isEmpty(rightBottomOsd) ? "" : rightBottomOsd);
+                    osdJson.put("leftBottom", TextUtils.isEmpty(leftBottomOsd) ? "" : leftBottomOsd);
+
+                    JSONUtils.saveJson(tmpConfigFile.getAbsolutePath(), configJson);
+                } catch (Exception ex) {
+                    ex.printStackTrace();
+                }
+
+                File file = new File(path);
+                if (file.exists()) {
+                    file.delete();
+                } else {
+                    FileUtils.ensureParentDirectoryExisted(path);
+                }
+
+                MicroPhotoService.takePhoto(channel, preset, true, tmpConfigFile.getAbsolutePath(), path);
+                if (tmpConfigFile.exists()) {
+                    tmpConfigFile.delete();
+                }
+
+            }  else if (TextUtils.equals(action, ACTION_RECORDING)) {
+                String path = intent.getStringExtra("path");
+                int channel = intent.getIntExtra("channel", 1);
+                int cameraId = intent.getIntExtra("cameraId", -1);
+                int quality = intent.getIntExtra("quality", 0);
+                int width = intent.getIntExtra("width", 1280);
+                int height = intent.getIntExtra("height", 720);
+                int duration = intent.getIntExtra("duration", 15);
+                int orientation = intent.getIntExtra("orientation", 0);
+                long videoId = System.currentTimeMillis() / 1000;
+
+                String leftTopOsd = intent.getStringExtra("leftTopOsd");
+                String rightTopOsd = intent.getStringExtra("rightTopOsd");
+                String rightBottomOsd = intent.getStringExtra("rightBottomOsd");
+                String leftBottomOsd = intent.getStringExtra("leftBottomOsd");
+
+                if (cameraId == -1) {
+                    cameraId = channel - 1;
+                }
+
+                Intent recordingIntent = MicroPhotoService.makeRecordingIntent(getApplicationContext(),
+                        cameraId, videoId, duration, width, height, quality, orientation,
+                        leftTopOsd, rightTopOsd, rightBottomOsd, leftBottomOsd);
+
+                mVideoFilePath = path;
+                mAutoClose = false;
+
+                recordingIntent.putExtra("ActivityResult", true);
+                // startActivityForResult(recordingIntent, REQUEST_CODE_RECORDING);
+            }
+        }
+
+        if (mAutoClose) {
+            mHandler.postDelayed(new Runnable() {
+                @Override
+                public void run() {
+                    Log.i(TAG, "BridgeActivity will finish automatically");
+                    stopSelf();
+                }
+            }, 200);
+        }
+
+        return super.onStartCommand(intent, flags, startId);
+    }
+
+    /**
+     * 服务销毁时的回调
+     */
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+}
\ No newline at end of file