1.在AndroidManifest.xml中配置权限

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在调用的activity中加入

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如图在这里输入图片标题

2.在onCreate调用

PrinterUtil.init(Activity)

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3.打印文字接口

PrinterUtil.printText(String)

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4.打印实现类

public class PrinterUtil {

private static UsbManager usbManager;

/**

* 满足的设备

*/

private static UsbDevice myUsbDevice;

/**

* usb接口

*/

private static UsbInterface usbInterface;

/**

* 块输出端点

*/

private static UsbEndpoint epBulkOut;

private static UsbEndpoint epBulkIn;

/**

* 控制端点

*/

private static UsbEndpoint epControl;

/**

* 中断端点

*/

private static UsbEndpoint epIntEndpointOut;

private static UsbEndpoint epIntEndpointIn;

/**

* 连接

*/

private static UsbDeviceConnection myDeviceConnection;

/**

* 初始化打印机(获取usb打印设备,连接打印机,获取USB连接权限)

* @param activity

*/

public static void init(Activity activity){

//1)创建usbManager

usbManager = (UsbManager)activity.getSystemService(Context.USB_SERVICE);

enumeraterDevices(activity);

getDeviceInterface();

assignEndpoint();

}

/**

* 枚举设备

*/

private static void enumeraterDevices(Activity activity){

HashMap deviceList = usbManager.getDeviceList();

Iterator deviceIterator = deviceList.values().iterator();

while(deviceIterator.hasNext()){

UsbDevice device = deviceIterator.next();

//每个打印机的vendorId和productId都不同,需要自行替换

if (device.getVendorId() == 4070 && device.getProductId() == 33054) {

myUsbDevice = device; // 获取USBDevice

PendingIntent pi = PendingIntent.getBroadcast(activity, 0,

new Intent(ACTION_USB_PERMISSION), 0);

usbManager.requestPermission(myUsbDevice, pi);

}

}

}

/**

* 获取设备的接口

*/

private static void getDeviceInterface() {

if(myUsbDevice!=null){

Log.i(TAG,"interfaceCounts : "+myUsbDevice.getInterfaceCount());

usbInterface = myUsbDevice.getInterface(0);

System.out.println("成功获得设备接口:" + usbInterface.getId());

}

}

/**

* 分配端点，IN | OUT，即输入输出；可以通过判断

*/

private static void assignEndpoint() {

if(usbInterface!=null){

for (int i = 0; i < usbInterface.getEndpointCount(); i++) {

UsbEndpoint ep = usbInterface.getEndpoint(i);

switch (ep.getType()){

case UsbConstants.USB_ENDPOINT_XFER_BULK://块

if(UsbConstants.USB_DIR_OUT==ep.getDirection()){//输出

epBulkOut = ep;

System.out.println("Find the BulkEndpointOut," + "index:" + i + "," + "使用端点号："+ epBulkOut.getEndpointNumber());

}else{

epBulkIn = ep;

System.out .println("Find the BulkEndpointIn:" + "index:" + i+ "," + "使用端点号："+ epBulkIn.getEndpointNumber());

}

break;

case UsbConstants.USB_ENDPOINT_XFER_CONTROL://控制

epControl = ep;

System.out.println("find the ControlEndPoint:" + "index:" + i+ "," + epControl.getEndpointNumber());

break;

case UsbConstants.USB_ENDPOINT_XFER_INT://中断

if (ep.getDirection() == UsbConstants.USB_DIR_OUT) {//输出

epIntEndpointOut = ep;

System.out.println("find the InterruptEndpointOut:" + "index:" + i + "," + epIntEndpointOut.getEndpointNumber());

}

if (ep.getDirection() == UsbConstants.USB_DIR_IN) {

epIntEndpointIn = ep;

System.out.println("find the InterruptEndpointIn:" + "index:" + i + ","+ epIntEndpointIn.getEndpointNumber());

}

break;

default:

break;

}

}

}

}

private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";

/**

* 连接设备

*/

private static void openDevice() {

if(usbInterface!=null){//接口是否为null

// 在open前判断是否有连接权限；对于连接权限可以静态分配，也可以动态分配权限

UsbDeviceConnection conn = null;

if(usbManager.hasPermission(myUsbDevice)){

//有权限，那么打开

conn = usbManager.openDevice(myUsbDevice);

}

if(null==conn){

System.out.print("不能连接到设备");

return;

}

//打开设备

if(conn.claimInterface(usbInterface,true)){

myDeviceConnection = conn;

if (myDeviceConnection != null)// 到此你的android设备已经连上zigbee设备

System.out.println("open设备成功！");

final String mySerial = myDeviceConnection.getSerial();

System.out.println("设备serial number：" + mySerial);

} else {

System.out.println("无法打开连接通道。");

conn.close();

}

}

}

/**

* 打印文字

* @param activity

* @param txt

*/

public static void printText(Activity activity,final String txt){

openDevice();

new Thread(new Runnable() {

@Override

public void run() {

try {

//每个打印机的编码格式不一样,根据打印机的编码自行修改

byte[] buffer = txt.getBytes("GBK");

myDeviceConnection.bulkTransfer(epBulkOut,buffer,buffer.length,0);

} catch (Exception e) {

}

}

}).start();

}

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}

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