LightsService中的几个light分别是什么？
static final int LIGHT_ID_BACKLIGHT = 0;
static final int LIGHT_ID_KEYBOARD = 1;
static final int LIGHT_ID_BUTTONS = 2;
static final int LIGHT_ID_BATTERY = 3;
static final int LIGHT_ID_NOTIFICATIONS = 4;
static final int LIGHT_ID_ATTENTION = 5;
static final int LIGHT_ID_BLUETOOTH = 6;
static final int LIGHT_ID_WIFI = 7;
static final int LIGHT_ID_COUNT = 8;
static final int LIGHT_FLASH_NONE = 0;
static final int LIGHT_FLASH_TIMED = 1;
static final int LIGHT_FLASH_HARDWARE = 2;
[解决办法]
lights.h上注解比较多些 源码的注释都很少
http://www.netmite.com/android/mydroid/2.0/hardware/libhardware/include/hardware/lights.h
前面定义的应该是逻辑的灯的类型，每个灯的类型有多种的物理硬件类型有PWM,GPIO,3-color led，
后面是灯的闪烁定义 无闪烁 定时闪烁 和 由硬件产生闪烁
