feat: innerAudioContext 实现取消事件监听方法 fixed #393

src/core/service/api/context/inner-audio.js

 /**
  * 可以批量设置的监听事件
  */
-var innerAudioContextEventNames = ['onCanplay', 'onPlay', 'onPause', 'onStop', 'onEnded', 'onTimeUpdate', 'onError', 'onWaiting', 'onSeeking', 'onSeeked']
+const innerAudioContextEventNames = ['onCanplay', 'onPlay', 'onPause', 'onStop', 'onEnded', 'onTimeUpdate', 'onError', 'onWaiting', 'onSeeking', 'onSeeked']
+
+const innerAudioContextOffEventNames = ['offCanplay', 'offPlay', 'offPause', 'offStop', 'offEnded', 'offTimeUpdate', 'offError', 'offWaiting', 'offSeeking', 'offSeeke']
+
 /**
  * 音频上下文对象
  */
@@ -138,6 +141,17 @@ innerAudioContextEventNames.forEach((eventName) => {
   }
 })
 
+// 批量设置音频上下文事件取消监听方法
+innerAudioContextOffEventNames.forEach((eventName) => {
+  InnerAudioContext.prototype[eventName] = function (callback) {
+    var handle = this._events[eventName.replace('off', 'on')]
+    var index = handle.indexOf(callback)
+    if (index >= 0) {
+      handle.splice(index, 1)
+    }
+  }
+})
+
 /**
  * 创建音频上下文
  */