java.io.IOException: Error running exec(). Command: [/system/bin/su] Working Directory: null Environment: null about android-serialport-api HOT 4 CLOSED

From a quick look that appears as though the there is an error running the 
/system/bin/su on the device.

I have seen a similar problem on a Android 3.1 production device.

Is the Android 2.2 a physical device or an AVD?

"/system/bin/su" is only present on rooted Android versions, like Cyanogen. It 
is not present on the emulator.

Nevertheless, the "su" command only gets executed if the serial port does not 
have the proper access rights in the first place.

You have to type "adb shell chmod 777 /dev/tty<>" each time you restart the 
emulator
(of course replace /dev/tty<>" by your serial device)

Hi,

Please check your AndroidManifest.xml for the minSdkVersion you configured.

while executed on Android3.0 may set default as 11, for Android2.2 it is 8.

VGR

Gnanam, why should I increase minSdkVersion? I do not need any of the features 
introduced by newer SDKs, and it would break the support for Android 1.5 to 2.3 
devices!