com.cloudpos.jniinterface

Class PrinterInterface

java.lang.Object

com.cloudpos.jniinterface.PrinterInterface

public class PrinterInterface
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
PrinterInterface()

Method Summary

Modifier and Type	Method and Description
static int	begin() prepare to print.
static int	close() close the device.
static int	end() end to print.
static boolean	isOpened()
static int	open() open the device.
static int	queryStatus() query the status of printer.
static int	queryVoltage(int[] pCapacity, int[] pVoltage) query the capacity and voltage.
static int	read(byte[] arryData, int nDataLength, int nTimeout) read the data from the device.
static int	write(byte[] arryData, int nDataLength) write the data to the device.
static int	write(byte[] arryData, int offset, int nDataLength) write the data to the device.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PrinterInterface

public PrinterInterface()

Method Detail

open

public static int open()

open the device.

Returns:

value >= 0, success in starting the process; value < 0, error code

close

public static int close()

close the device.

Returns:

value >= 0, success in starting the process; value < 0, error code

begin

public static int begin()

prepare to print.

Returns:

value >= 0, success in starting the process; value < 0, error code

end

public static int end()

end to print.

Returns:

value >= 0, success in starting the process; value < 0, error code

write

public static int write(byte[] arryData,
                        int nDataLength)

write the data to the device.

Parameters:

arryData - : data or control command

nDataLength - : length of data or control command

Returns:

value >= 0, success in starting the process; value < 0, error code

read

public static int read(byte[] arryData,
                       int nDataLength,
                       int nTimeout)

read the data from the device.

Parameters:

arryData - : byte to save result

nDataLength - : expect length of data

nTimeout - : time out

Returns:

value : 0 : success < 0 : error code

write

public static int write(byte[] arryData,
                        int offset,
                        int nDataLength)

write the data to the device.

Parameters:

arryData - : data or control command

offset - : offset for data.

nDataLength - : length of data or control command

Returns:

value >= 0, success in starting the process; value < 0, error code

queryStatus

public static int queryStatus()

query the status of printer. return value : < 0 : error code = 0 : no paper = 1 : has paper other value : RFU

queryVoltage

public static int queryVoltage(int[] pCapacity,
                               int[] pVoltage)

query the capacity and voltage. return value : < 0 : error code >= 0 : success

isOpened

public static boolean isOpened()