解决Android蓝牙打印不按预期工作的方法可能因具体问题而异,以下是一些可能的解决方法和代码示例:
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BLUETOOTH);
}
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
BluetoothDevice targetDevice = null;
// 搜索蓝牙设备
Set pairedDevices = bluetoothAdapter.getBondedDevices();
for (BluetoothDevice device : pairedDevices) {
if (device.getName().equals("打印机名称")) {
targetDevice = device;
break;
}
}
// 连接蓝牙设备
BluetoothSocket bluetoothSocket = targetDevice.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
bluetoothSocket.connect();
OutputStream outputStream = bluetoothSocket.getOutputStream();
String printCommand = "打印指令";
outputStream.write(printCommand.getBytes());
outputStream.flush();
outputStream.close();
请注意,这些是一般解决方法和示例代码,您可能需要根据您的特定设备和打印机进行调整。此外,还应注意错误处理和异常情况的处理。