android.hardware.USB

  在最新的Android版本中，android.hardware.USB是一个新增类，提供了USB相关事件的插拔，以及状态模式的广播。这里，可以看到USB连接、断开、是否为U盘、ADB模式等等。定义如下 public class Usb {    public static final String ACTION_USB_CONNECTED =            "android.hardware.action.USB_CONNECTED";      public static final String ACTION_USB_DISCONNECTED =            "android.hardware.action.USB_DISCONNECTED";     public static final String ACTION_USB_STATE =            "android.hardware.action.USB_STATE";     public static final String USB_CONNECTED = "connected";     public static final String USB_FUNCTION_MASS_STORAGE = "mass_storage";     public static final String USB_FUNCTION_ADB = "adb";     public […]