Android设备的蓝牙打印？ [英] Bluetooth printing fron android devices ?

问题描述

我正在制作一个应用程序，我需要从Android手机打印文件，这是蓝牙的支持者。



任何帮助？



提前谢谢..

解决方案

我用参考链接解决了



import java.io.OutputStream;

import java.lang.reflect.Method;



导入android.app.Activity;

导入android.app.Dialog;

导入android.bluetooth.BluetoothAdapter;

导入android.bluetooth.BluetoothDevice;

导入android.bluetooth.BluetoothSocket;

导入android.content.BroadcastReceiver;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.content。 IntentFilter;

导入android.os.Bundle;

导入android.util.Log;

导入android.widget.Toast; < br $>


公共类BluetoothPrint扩展活动{



BluetoothAdapter mBTAdapter;

BluetoothSocket mBTSocket = null;

Dialog dialogProgress;

String BILL，TRANS_ID;

String PRINTER_MAC_ID;

final String ERROR_MESSAGE = 打印账单时出错。;



@Override

public void onCreate（Bundle savedInstanceState）{

super.onCreate（savedInstanceState）;

尝试{



// BILL = getIntent（）。getStringExtra（TO_PRINT ）;

// TRANS_ID = getIntent（）。getStringExtra（TRANS_ID）;



// PRINTER_MAC_ID = getIntent（）。 getStringExtra（MAC_ID）;

PRINTER_MAC_ID =00：1F：B7：02：8F：44;

// PRINTER_MAC_ID =00：12：F3： 0D：A3：E6;

// TRANS_ID =12345678;

BILL =\ nSale Slip No：12345678++04-08-2011 \ n;

BILL = BILL +----------- -----------------------------;

BILL = BILL +\ n \ n ;

BILL = BILL +总数量：++2.0 \ n;

BILL = BILL +总价值：+ +17625.0 \ n;

BILL = BILL +----------------------------- ------------;



mBTAdapter = BluetoothAdapter.getDefaultAdapter（）;

dialogProgress = new Dialog （BluetoothPrint.this）;



尝试{

if（mBTAdapter.isDiscovering（））

mBTAdapter。 cancelDiscovery（）;

else

mBTAdapter.startDiscovery（）;

} catch（例外e）{

Log.e（Class，My Exe，e）;

}

System.out.println（BT搜索状态：

+ mBTAdapter.isDiscovering（））;

if（mBTAdapter == null）{

Toast.makeText（这个，设备没有蓝牙功能，

Toast.LENGTH_LONG）。show（）;

完成（）;

}否则{

if（！mBTAdapter.isEnabled（））{

意图i =新意图（

BluetoothAdapter.ACTION_REQUEST_ENABLE）;

startActivityForResult（i，0）;

}



//注册BroadcastReceiver

IntentFilter filter = new IntentFilter（

BluetoothDevice.ACTION_FOUND）;

registerReceiver（mReceiver，filter）; //不要忘记

//取消注册

// onDestroy

dialogProgress.setTitle（查找打印机......） ;

dialogProgress

.setOnDismissListener（new DialogInterface.OnDismissListener（）{

public void onDismiss（DialogInterface dialog）{

dialog.dismiss（）;

setResult（RESULT_CANCELED）;

完成（）;

}

}）;

dialogProgress.show（）;



}



} catch（例外e）{

Log.e（Class，My Exe，e）;

}

}



public void printBillToDevice（final String address）{

new thread（new Runnable（）{



public void run（）{

runOnUiThread（new Runnable（）{



public void run（）{

dialogProgress.setTitle（正在连接......）;

dialogProgress.show（）;

}



}）;



mBTAdapter.cancelDiscovery（）;



试试{

System.out

.println（**************************＃****连接 ）;

蓝牙设备mdevice = mBTAdapter

.getRemoteDevice（地址）;

方法m = mdevice.getClass（）。getMethod（

createRfcommSocket，new Class [] {int.class}）;

mBTSocket =（BluetoothSocket）m.invoke（mdevice，1）;



mBTSocket.connect（）;

OutputStream os = mBTSocket.getOutputStream（）;

os.flush（）;



os.write（BILL.getBytes（））;

System.out.println（BILL）;





//mBTSocket.close（）;

setResult（RESULT_OK）;

完成（）;

} catch（例外e）{

Log.e（Class，My Exe，e）;

//Toast.makeText（BluetoothPrint.this，ERROR_MESSAGE， Toast.LENGTH_SHORT）。show（）;

e.printStackTrace（）;

setResult（RESULT_CANCELED）;

finish（ ）;



}



runOnUiThread（new Runnable（）{



public void run（）{

try {

dialogProgress.dismiss（）;

} catch（异常） e）{

Log.e（Class，My Exe，e）;

}

}



}）;



}



}）。开始（）;

}



@Override

protected void onDestroy（）{

Log.i（Dest，Checking Ddest）;

super.onDestroy（）;

尝试{

if （dialogProgress！= null）

dialogProgress.dismiss（）;

if（mBTAdapter！= null）

mBTA dapter.cancelDiscovery（）;

this.unregisterReceiver（mReceiver）;

} catch（例外e）{

Log.e（Class ，我的Exe，e）;

}

}



私人最终BroadcastReceiver mReceiver = new BroadcastReceiver（）{

public void onReceive（Context context，Intent intent）{



try {

String action = intent.getAction（）;

//当发现找到设备时

if（BluetoothDevice.ACTION_FOUND.equals（action））{

//从意图中获取BluetoothDevice对象

蓝牙设备=意图

.getParcelableExtra（BluetoothDevice.EXTRA_DEVICE）;

System.out。 println（***+ device.getName（）+：

+ device.g etAddress（））;



if（device.getAddress（）。equalsIgnoreCase（PRINTER_MAC_ID））{

mBTAdapter.cancelDiscovery（）; < br $>
dialogProgress.dismiss（）;

Toast.makeText（BluetoothPrint.this，

device.getName（）+打印数据，

Toast.LENGTH_LONG）。show（）;

printBillToDevice（PRINTER_MAC_ID）;

Toast.makeText（BluetoothPrint.this，

device.getName（）+found，Toast.LENGTH_LONG）

.show（）;

}

}

} catch（例外e）{

Log.e（Class，My Exe，e）;

//Toast.makeText（ BluetoothPrint.this，ERROR_MESSAGE， Toast.LENGTH_SHORT）。show（）;



}

}

};



@Override

public void onBackPressed（）{

try {

if（mBTAdapter！= null）

mBTAdapter.cancelDiscovery（）;

this.unregisterReceiver（mReceiver）;

} catch（例外e）{

Log.e（Class，My Exe，e）;

}

setResult（RESULT_CANCELED）;

完成（）;

}



}



来自此链接

http://stackoverflow.com/questions/7145787/bluetooth-printer -issue-in-android [ ^ ]

<集团kquote> 我用参考链接解决了







来自此链接

http://stackoverflow.com / questions / 7145787 / bluetooth-printer-issue-in-android [ ^ ]

请告诉我哪个蓝牙打印机支持此程序。因为我是android新手，请帮助我。

I am making one application from where i need to print a document from android phone , which is supporter by Bluetooth.

Any helps??

Thanks in advance ..

解决方案

I solved it with reference link

import java.io.OutputStream;
import java.lang.reflect.Method;

import android.app.Activity;
import android.app.Dialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

public class BluetoothPrint extends Activity {

BluetoothAdapter mBTAdapter;
BluetoothSocket mBTSocket = null;
Dialog dialogProgress;
String BILL, TRANS_ID;
String PRINTER_MAC_ID;
final String ERROR_MESSAGE = "There has been an error in printing the bill.";

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {

// BILL = getIntent().getStringExtra("TO_PRINT");
// TRANS_ID = getIntent().getStringExtra("TRANS_ID");

// PRINTER_MAC_ID = getIntent().getStringExtra("MAC_ID");
PRINTER_MAC_ID = "00:1F:B7:02:8F:44";
//PRINTER_MAC_ID = "00:12:F3:0D:A3:E6";
// TRANS_ID="12345678";
BILL = "\nSale Slip No: 12345678" + " " + "04-08-2011\n";
BILL = BILL + "----------------------------------------";
BILL = BILL + "\n\n";
BILL = BILL + "Total Qty:" + " " + "2.0\n";
BILL = BILL + "Total Value:" + " " + "17625.0\n";
BILL = BILL + "-----------------------------------------";

mBTAdapter = BluetoothAdapter.getDefaultAdapter();
dialogProgress = new Dialog(BluetoothPrint.this);

try {
if (mBTAdapter.isDiscovering())
mBTAdapter.cancelDiscovery();
else
mBTAdapter.startDiscovery();
} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
}
System.out.println("BT Searching status :"
+ mBTAdapter.isDiscovering());
if (mBTAdapter == null) {
Toast.makeText(this, "Device has no bluetooth capability",
Toast.LENGTH_LONG).show();
finish();
} else {
if (!mBTAdapter.isEnabled()) {
Intent i = new Intent(
BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(i, 0);
}

// Register the BroadcastReceiver
IntentFilter filter = new IntentFilter(
BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter); // Don't forget to
// unregister during
// onDestroy
dialogProgress.setTitle("Finding printer...");
dialogProgress
.setOnDismissListener(new DialogInterface.OnDismissListener() {
public void onDismiss(DialogInterface dialog) {
dialog.dismiss();
setResult(RESULT_CANCELED);
finish();
}
});
dialogProgress.show();

}

} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
}
}

public void printBillToDevice(final String address) {
new Thread(new Runnable() {

public void run() {
runOnUiThread(new Runnable() {

public void run() {
dialogProgress.setTitle("Connecting...");
dialogProgress.show();
}

});

mBTAdapter.cancelDiscovery();

try {
System.out
.println("**************************#****connecting");
BluetoothDevice mdevice = mBTAdapter
.getRemoteDevice(address);
Method m = mdevice.getClass().getMethod(
"createRfcommSocket", new Class[] { int.class });
mBTSocket = (BluetoothSocket) m.invoke(mdevice, 1);

mBTSocket.connect();
OutputStream os = mBTSocket.getOutputStream();
os.flush();

os.write(BILL.getBytes());
System.out.println(BILL);


//mBTSocket.close();
setResult(RESULT_OK);
finish();
} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
//Toast.makeText(BluetoothPrint.this, ERROR_MESSAGE, Toast.LENGTH_SHORT).show();
e.printStackTrace();
setResult(RESULT_CANCELED);
finish();

}

runOnUiThread(new Runnable() {

public void run() {
try {
dialogProgress.dismiss();
} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
}
}

});

}

}).start();
}

@Override
protected void onDestroy() {
Log.i("Dest ", "Checking Ddest");
super.onDestroy();
try {
if(dialogProgress != null)
dialogProgress.dismiss();
if (mBTAdapter != null)
mBTAdapter.cancelDiscovery();
this.unregisterReceiver(mReceiver);
} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
}
}

private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {

try {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
System.out.println("***" + device.getName() + " : "
+ device.getAddress());

if (device.getAddress().equalsIgnoreCase(PRINTER_MAC_ID)) {
mBTAdapter.cancelDiscovery();
dialogProgress.dismiss();
Toast.makeText(BluetoothPrint.this,
device.getName() + " Printing data",
Toast.LENGTH_LONG).show();
printBillToDevice(PRINTER_MAC_ID);
Toast.makeText(BluetoothPrint.this,
device.getName() + " found", Toast.LENGTH_LONG)
.show();
}
}
} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
//Toast.makeText(BluetoothPrint.this, ERROR_MESSAGE, Toast.LENGTH_SHORT).show();

}
}
};

@Override
public void onBackPressed() {
try {
if (mBTAdapter != null)
mBTAdapter.cancelDiscovery();
this.unregisterReceiver(mReceiver);
} catch (Exception e) {
Log.e("Class ", "My Exe ", e);
}
setResult(RESULT_CANCELED);
finish();
}

}

from this link
http://stackoverflow.com/questions/7145787/bluetooth-printer-issue-in-android[^]

I solved it with reference link



from this link
http://stackoverflow.com/questions/7145787/bluetooth-printer-issue-in-android[^]

please tell me which Bluetooth printer support this program. Because i am new in android, please help me.

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