@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fileManager = FileManager.getSingleton(getContext());
DeviceConnectionListener listener = null;
Bundle args = getArguments();
if (args != null) {
fromDevice = args.getBoolean(ARG_FROM_DEVICE);
if (fromDevice) {
listener = this;
}
}
usbConn = UsbConnection.getSingleton(getContext(), listener);
mainHandler = new Handler(getContext().getMainLooper());
}
@Override
public void onDestroy() {
usbConn.removeListener(this);
usbConn = null;
super.onDestroy();
}