项目在android 端调式时遇到FileNotFoundException错误，而adb 过去时发现有这个文件，哪位知道是什么问题？
而且这个报这个异常时不见得是哪个Scene,有可能是A Scene，也有可能是B Scene?新人求解…
12-19 14:53:15.506: E/QExtrudeView(13122): QExtrudeView---->>switchImage—mPosition=7
12-19 14:53:20.516: E/QExtrudeView(13122): QExtrudeView---->>switchImage—mPosition=0
12-19 14:53:25.666: E/QExtrudeView(13122): QExtrudeView---->>switchImage—mPosition=1
12-19 14:53:27.906: E/SystemWriteService(1445): IO Exception when write: /sys/class/video/clear_video_buf
12-19 14:53:27.906: E/SystemWriteService(1445): java.io.FileNotFoundException: /sys/class/video/clear_video_buf: open failed: EACCES (Permission denied)
12-19 14:53:27.906: E/SystemWriteService(1445): at libcore.io.IoBridge.open(IoBridge.java:416)
12-19 14:53:27.906: E/SystemWriteService(1445): at java.io.FileOutputStream.(FileOutputStream.java:88)
12-19 14:53:27.906: E/SystemWriteService(1445): at java.io.FileOutputStream.(FileOutputStream.java:73)
12-19 14:53:27.906: E/SystemWriteService(1445): at java.io.FileWriter.(FileWriter.java:80)
12-19 14:53:27.906: E/SystemWriteService(1445): at com.android.server.SystemWriteService.writeSysfs(SystemWriteService.java:138)
12-19 14:53:27.906: E/SystemWriteService(1445): at android.app.ISystemWriteService$Stub.onTransact(ISystemWriteService.java:134)
12-19 14:53:27.906: E/SystemWriteService(1445): at android.os.Binder.execTransact(Binder.java:351)
12-19 14:53:27.906: E/SystemWriteService(1445): at com.android.server.am.ActivityStack.enableFreeScaleMBX(Native Method)
12-19 14:53:27.906: E/SystemWriteService(1445): at com.android.server.am.ActivityStack$3.run(ActivityStack.java:1909)
12-19 14:53:27.906: E/SystemWriteService(1445): at java.lang.Thread.run(Thread.java:856)
12-19 14:53:27.906: E/SystemWriteService(1445): Caused by: libcore.io.ErrnoException: open failed: EACCES (Permission denied)
12-19 14:53:27.906: E/SystemWriteService(1445): at libcore.io.Posix.open(Native Method)
12-19 14:53:27.906: E/SystemWriteService(1445): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
12-19 14:53:27.906: E/SystemWriteService(1445): at libcore.io.IoBridge.open(IoBridge.java:400)
12-19 14:53:27.906: E/SystemWriteService(1445): … 9 more