Cocos Creator打包安卓启动报空指针异常闪退

当我们构建好资源打包安卓启动之后报空指针异常，有如下错误日志

at org.cocos2dx.lib.Cocos2dxAudioFocusManager.unregisterAudioFocusListener(Cocos2dxAudioFocusManager.java:121)

at org.cocos2dx.lib.Cocos2dxActivity.onDestroy(Cocos2dxActivity.java:355)

可以参考https://github.com/cocos-creator/cocos2d-x-lite/pull/2060

解决方案https://github.com/cocos-creator/cocos2d-x-lite/pull/2060/files/3971ddc2686d5866feba6530b4bbd50dc73d611b