android - 如何在蓝牙 POS 打印机中打印右对齐的文本？

Question

我一直在尝试在 android 中做一个 POS 应用程序，我在连接到该应用程序的蓝牙打印机上打印收据。我可以使用设备随附的 HOINSDK 打印“大”、“小”和 QR 码，并且可以对齐“左”和“中心”，但无法将其与“右”对齐。任何帮助表示赞赏。

以下是各个事物的代码：

//For Large Text

                cmd[0] = 27;
                cmd[1] = 97;
                cmd[2] &= 0xEF;
                mService.write(cmd);
                mService.sendMessage("" + large_txt.getText().toString(), "GBK");

//For Small Text
                cmd[0] = 0x1b;
                cmd[1] = 0x21;
                cmd[2] &= 0xEF;
                mService.write(cmd);          
                mService.sendMessage("" + small_txt.getText().toString(), "GBK");

//For Center Alignment small text
                cmd[0] = 27;
                cmd[1] = 97;
                cmd[2] |= 1;
                mService.write(cmd);
                cmd[0] = 27;
                cmd[1] = 97;
                cmd[2] = 1;
                mService.write(cmd);  
                mService.sendMessage("" + center_txt.getText().toString(), "GBK");

//For centre alignment Large Text
                cmd[1] = 97;
                cmd[2] |= 1;
                mService.write(cmd);
                cmd[0] = 0x1b;
                cmd[1] = 0x21;
                cmd[2] = 0x10;
                mService.write(cmd);  
                mService.sendMessage("" + center_txt.getText().toString(), "GBK");

//For Left alignment
                cmd[0] = 27;
                cmd[1] = 97;
                cmd[2] |= 1;
                mService.write(cmd);
                cmd[0] = 27;
                cmd[1] = 97;
                cmd[2] = 0;
                mService.write(cmd);
                mService.sendMessage("" + left_txt.getText().toString(), "GBK");

如果有人可以帮助我使用正确的对齐代码，那将会很有帮助。

标签： androidprintingbluetoothbytepos

Answer 1

添加此打印机命令

public static final byte[] ESC_ALIGN_RIGHT = new byte[] { 0x1b, 'a', 0x02 };