question: unregister concode_field_sep OnChangedListener mListener concode_elem_sep UsbManager mUsbManager concode_elem_sep BroadcastReceiver mReceiver concode_elem_sep String TAG_SUB concode_elem_sep int PERM_FLAGS concode_elem_sep String ACTION_USB_PERMISSION concode_elem_sep Context mContext concode_elem_sep int PERM_REQUEST_CODE concode_field_sep boolean checkType concode_elem_sep void registerPermission concode_elem_sep void execAttached concode_elem_sep List<UsbDevice> getDeviceList concode_elem_sep void registerDetached concode_elem_sep boolean checkVendor concode_elem_sep void onReceive concode_elem_sep void receivePermission concode_elem_sep void log_d concode_elem_sep void onDetached concode_elem_sep List<UsbInterface> findInterface concode_elem_sep List<UsbEndpoint> findEndpoint concode_elem_sep void receiveDetached concode_elem_sep void registerAttached concode_elem_sep void receiveAttached concode_elem_sep void onAttached concode_elem_sep void notifyAttached concode_elem_sep boolean checkProduct concode_elem_sep void setOnChangedListener concode_elem_sep boolean matchDevice concode_elem_sep boolean checkValue concode_elem_sep void notifyDetached concode_elem_sep UsbDeviceConnection openDevice
target: void function ( ) { mContext . unregisterReceiver ( mReceiver ) ; }