android4.0 触摸屏配置

http://source.android.com/tech/input/input-device-configuration-files.html这篇文档，会按下面的顺序识别配置文件：
/system/usr/idc/Vendor_XXXX_Product_XXXX_Version_XXXX.idc
/system/usr/idc/Vendor_XXXX_Product_XXXX.idc
/system/usr/idc/DEVICE_NAME.idc
/data/system/devices/idc/Vendor_XXXX_Product_XXXX_Version_XXXX.idc
/data/system/devices/idc/Vendor_XXXX_Product_XXXX.idc
/data/system/devices/idc/DEVICE_NAME.idc
   为了方便，我直接创建一个“设备名.idc”的文件，直接放到/system/usr/idc/目录下，相应的内容参考如下：
   # Basic Parameters
   touch.deviceType = touchScreen
   touch.orientationAware = 1

   # Size
   touch.size.calibration = diameter
   touch.size.scale = 10
   touch.size.bias = 0
   touch.size.isSummed = 0

   # Pressure
   # Driver reports signal strength as pressure.
   #
   # A normal thumb touch typically registers about 200 signal strength
   # units although we don't expect these values to be accurate.
   touch.pressure.calibration = amplitude
   touch.pressure.scale = 0.005

   # Orientation
   touch.orientation.calibration = none
   这样配置好后，在android4.0上的TP就可以正常使用了，而不会成为滑鼠触屏了。