key 在 framework/base//libs/ui/EventHub.cpp 把 LOG message 打開： #define LOG_NDEBUG 0 就會把 keyevent 的轉換機制 print 出來。
這就是 logcat 出來 touch lcd 時的log: V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=765659, type=3, code=0, v=406 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=765678, type=3, code=1, v=279 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=765682, type=3, code=24, v=83 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=765689, type=1, code=330, v=1 V/EventHub( 2192): iev.code=330 outKeycode=0 outFlags=0x00000000 err=-19 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=765698, type=0, code=0, v=0 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=791410, type=3, code=24, v=0 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=791434, type=1, code=330, v=0 V/EventHub( 2192): iev.code=330 outKeycode=0 outFlags=0x00000000 err=-19 V/EventHub( 2192): revents for 1 = 0x00000001 V/EventHub( 2192): /dev/input/event2 got: t0=95, t1=791452, type=0, code=0, v=0