Android手机获取不到String[] mDevices = serialPortFinder.getAllDevicesPath();，mDevices大小为0

[chuncainiao]

java.io.FileNotFoundException: /proc/tty/drivers: open failed: EACCES (Permission denied)
W/System.err: at libcore.io.IoBridge.open(IoBridge.java:496)
W/System.err: at java.io.FileInputStream.(FileInputStream.java:159)
W/System.err: at java.io.FileInputStream.(FileInputStream.java:115)
W/System.err: at java.io.FileReader.(FileReader.java:58)
W/System.err: at android.serialport.SerialPortFinder.getDrivers(SerialPortFinder.java:71)

[grubberbin]

权限问题啊

[chuncainiao]

这两个权限都已经添加了呀

[Mr-Jiang]

SE-Linux权限，需要改系统.te文件