解释ESC/POS命令
解释ESC/POS命令
提问于 2019-06-13 10:21:47
我正在构建一个应用程序，它使用蓝牙热打印机打印收据，我能够连接和打印使用打印机，但我不知道所有这些ESC/POS命令意味着什么。
打印机在黑色背景上打印我的文本白色，我实际上希望文本是黑色和背景白色。我不知道如何使用ESC/POS命令实现这种格式设置。
这是我的打印代码：
if (btsocket == null) {
Intent BTIntent = new Intent(getApplicationContext(), DeviceList.class);
this.startActivityForResult(BTIntent, DeviceList.REQUEST_CONNECT_BT);
} else {
OutputStream opstream = null;
try {
opstream = btsocket.getOutputStream();
} catch (IOException e) {
e.printStackTrace();
}
outputStream = opstream;
//print command
try {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
outputStream = btsocket.getOutputStream();
byte[] format = { 27, 33, 0 };
byte[] printformat = {0x1B, 0 * 21, FONT_TYPE};
outputStream.write(format);
//print title
printUnicode();
//print normal text
outputStream.write(format);
printCustom(message, 0, 0);
//printPhoto(R.drawable.img);
printNewLine();
outputStream.write(format);
printText(" >>>> Thank you <<<< "); // total 32 char in a single line
//resetPrint(); //reset printer
//printUnicode();
printNewLine();
printNewLine();
outputStream.flush();
} catch (IOException e) {
e.printStackTrace();
}
}第一行printUnicode();实际上只在白色背景上打印精细的黑色字符，但其余的文件则打印在带有白色字符的黑色背景上。是否有解释所有ESC/POS命令的文档？
回答 1
Stack Overflow用户
发布于 2020-01-13 17:57:43
您可以检查这些页面中的ESC/POS命令，对我来说非常有用：
https://github.com/escpos/escpos/blob/master/lib/escpos.rb
还有我的代码，希望能帮上忙：
public class MainActivity extends AppCompatActivity {
Button printButton;
final byte[] ALIGN_CENTER = {0x1b, 0x61, 0x01};
final byte[] ALIGN_LEFT = {0x1b, 0x61, 0x00};
final byte[] ALIGN_RIGHT = {0x1b, 0x61, 0x02};
final byte[] TEXT_SIZE_NORMAL = {0x1b, 0x21, 0x00};
final byte[] TEXT_SIZE_LARGE = {0x1b, 0x21, 0x30};
final byte[] INVERTED_COLOR_ON = {0x1d, 0x42, 0x01};
final byte[] BEEPER = {0x1b,0x42,0x05,0x05};
final byte[] INIT = {0x1b, 0x40};
//final byte[] CUT_PAPER = {0x1d, 0x56, 0x00};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
printButton = findViewById(R.id.main_print_button);
printButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new PrintTask().execute();
}
});
}
private class PrintTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... voids) {
try {
String text1 = "No setting size text" + "\n\n";
String text2 = "Inverted color text" + "\n\n";
String text3 = "Large size text" + "\n\n\n";
Socket socket = new Socket("192.168.1.241", 9100); //one socket responsible for one device
OutputStream outputStream = socket.getOutputStream();
outputStream.write(text1.getBytes("GBK")); //when printing text, "write()" will print before "println()"
outputStream.write(INVERTED_COLOR_ON);
outputStream.write(text2.getBytes("GBK"));
outputStream.write(new byte[]{0x1D, 0x56, 0x41, 0x10}); //"0x1d, 0x56, 0x41" is for paper cut and "0x10" is for line feed
//outputStream.write(BEEPER); //hardware turn on
outputStream.write(INIT);
outputStream.close();
socket.close();
} catch (UnknownHostException e) {
Log.e("Print()", "UnknownHostException");
} catch (IOException e) {
Log.e("Print()", "IOException");
}
return null;
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/56578406
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