在Android蓝牙热敏打印机中在同一行上打印两种不同的文本对齐方式

// 导入相关的类和包
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import java.io.IOException;
import java.io.OutputStream;
import java.util.UUID;

public class BluetoothPrinter {
    private BluetoothSocket socket;
    private OutputStream outputStream;

    // 连接蓝牙打印机
    public void connectToPrinter(BluetoothDevice printer) throws IOException {
        UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
        socket = printer.createRfcommSocketToServiceRecord(uuid);
        socket.connect();
        outputStream = socket.getOutputStream();
    }

    // 设置文本对齐方式
    public void setAlignment(int alignment) throws IOException {
        String command = "";
        switch (alignment) {
            case 0: // 左对齐
                command = "27 97 0";
                break;
            case 1: // 居中对齐
                command = "27 97 1";
                break;
            case 2: // 右对齐
                command = "27 97 2";
                break;
        }
        outputStream.write(hexStringToByteArray(command));
    }

    // 打印文本
    public void printText(String text) throws IOException {
        outputStream.write(text.getBytes());
    }

    // 断开蓝牙打印机连接
    public void disconnectPrinter() throws IOException {
        if (outputStream != null) {
            outputStream.close();
        }
        if (socket != null) {
            socket.close();
        }
    }

    // 辅助方法：将十六进制字符串转换为字节数组
    private byte[] hexStringToByteArray(String hexString) {
        int len = hexString.length() / 2;
        byte[] byteArray = new byte[len];
        for (int i = 0; i < len; i++) {
            int index = i * 2;
            int j = Integer.parseInt(hexString.substring(index, index + 2), 16);
            byteArray[i] = (byte) j;
        }
        return byteArray;
    }
}

// 在你的代码中使用BluetoothPrinter类进行打印操作
BluetoothPrinter printer = new BluetoothPrinter();
BluetoothDevice targetPrinter = ...; // 获取目标蓝牙打印机设备
printer.connectToPrinter(targetPrinter);
printer.setAlignment(0); // 设置左对齐
printer.printText("左对齐文本");
printer.setAlignment(2); // 设置右对齐
printer.printText("右对齐文本");
printer.disconnectPrinter();