我正在编写一个将数据发送到蓝牙打印机的应用程序.谁能帮我 ？如何使用
Android蓝牙堆栈进行打印？或者是否有任何外部api或sdk使用？
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
registerReceiver(ActionFoundReceiver,new IntentFilter(BluetoothDevice.ACTION_FOUND));
private final BroadcastReceiver ActionFoundReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context,Intent intent) {
String action = intent.getAction();
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
btArrayAdapter.add(device.getName() + "\n"
+ device.getAddress());
btArrayAdapter.notifyDataSetChanged();
}
}
};
这是我的数据发送到打印机的代码..
BluetoothDevice mDevice = bluetoothAdapter.getRemoteDevice("00:15:FF:F2:56:A4");
Method m = mDevice.getClass().getMethod("createRfcommSocket",new Class[] { int.class });
mBTsocket = (BluetoothSocket) m.invoke(mDevice,1);
System.out.println("Connecting.....");
mBTsocket.connect();
System.out.println("Connected");
OutputStream os = mBTsocket.getOutputStream();
os.flush();
os.write(Receipt.getBytes());
// mBTsocket.close();
当我写socket.close()时,数据没有打印到打印机,因为套接字连接在打印数据之前关闭..如果我没有写socket.close()那么数据只打印一次..我不会能够第二次打印数据,直到我重新启动手机的蓝牙.
