diff --git a/src/core/service/api/media/recorder.js b/src/core/service/api/media/recorder.js
index 8e030f0b287e74ef65fb14f2176777dd4ca0c4fb..1b3c6d86fdab4e9b415a47fef172d4f627adbfb8 100644
--- a/src/core/service/api/media/recorder.js
+++ b/src/core/service/api/media/recorder.js
@@ -11,59 +11,58 @@ const callbacks = {
 }
 
 class RecorderManager {
-  constructor() {
-    callbacks =
-      onMethod('onRecorderStateChange', res => {
-        const state = res.state
-        delete res.state
-        delete res.errMsg
-        callbacks[state].forEach(callback => {
-          if (typeof callback === 'function') {
-            callback(res)
-          }
-        })
+  constructor () {
+    onMethod('onRecorderStateChange', res => {
+      const state = res.state
+      delete res.state
+      delete res.errMsg
+      callbacks[state].forEach(callback => {
+        if (typeof callback === 'function') {
+          callback(res)
+        }
       })
+    })
   }
-  onError(callback) {
+  onError (callback) {
     callbacks.error.push(callback)
   }
-  onFrameRecorded(callback) {
+  onFrameRecorded (callback) {
 
   }
-  onInterruptionBegin(callback) {
+  onInterruptionBegin (callback) {
 
   }
-  onInterruptionEnd(callback) {
+  onInterruptionEnd (callback) {
 
   }
-  onPause(callback) {
+  onPause (callback) {
     callbacks.pause.push(callback)
   }
-  onResume(callback) {
+  onResume (callback) {
     callbacks.resume.push(callback)
   }
-  onStart(callback) {
+  onStart (callback) {
     callbacks.start.push(callback)
   }
-  onStop(callback) {
+  onStop (callback) {
     callbacks.stop.push(callback)
   }
-  pause() {
+  pause () {
     invokeMethod('operateRecorder', {
       operationType: 'pause'
     })
   }
-  resume() {
+  resume () {
     invokeMethod('operateRecorder', {
       operationType: 'resume'
     })
   }
-  start(options) {
+  start (options) {
     invokeMethod('operateRecorder', Object.assign({}, options, {
       operationType: 'start'
     }))
   }
-  stop() {
+  stop () {
     invokeMethod('operateRecorder', {
       operationType: 'stop'
     })
@@ -72,6 +71,6 @@ class RecorderManager {
 
 let recorderManager
 
-export function getRecorderManager() {
+export function getRecorderManager () {
   return recorderManager || (recorderManager = new RecorderManager())
 }