<string name="error_configuration">Please configure your serial port first.</string><string name="error_security">You do not have read/write permission to the serialport.</string><string name="error_unknown">The serial port can not be opened for an unknownreason.</string>

    <applicationandroid:allowBackup="true"android:name="android_serialport_api.Application"android:theme="@style/AppTheme" >

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:keepScreenOn="true"android:orientation="vertical" ><EditTextandroid:id="@+id/EditTextReception"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_weight="7"android:gravity="top"android:hint="Reception"android:isScrollContainer="true"android:scrollbarStyle="insideOverlay" ></EditText><EditTextandroid:id="@+id/EditTextEmission"android:layout_width="fill_parent"android:layout_height="wrap_content"android:hint="Emission"android:lines="4"android:text="" ></EditText><Buttonandroid:id="@+id/btnSend"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="Send" /></LinearLayout>

/** Copyright 2009 Cedric Priscal* * Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at* * http://www.apache.org/licenses/LICENSE-2.0* * Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License. */package zyf.serialportdemo;import java.io.IOException;import zyf.serialportdemo.R;import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;
import android_serialport_api.SerialPortActivity;public class ConsoleActivity extends SerialPortActivity {Button btnSend;EditText mReception;EditText mEmission;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.console);//        setTitle("Loopback test");mReception = (EditText) findViewById(R.id.EditTextReception);mEmission = (EditText) findViewById(R.id.EditTextEmission);btnSend = (Button)findViewById(R.id.btnSend);btnSend.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String text = mEmission.getText().toString();try {mOutputStream.write(new String(text).getBytes());mOutputStream.write('\n');} catch (IOException e) {e.printStackTrace();}}});//发送指令到斑马打印机mEmission.setText("^XA^A0N,40,30^FO50,150^FDHELLO WORLD^FS^XZ");　　　　/*二维码指令

　　　　　　^XA
　　　　　　^PMY
　　　　　　^FO200,200^BQ,2,10
　　　　　　^FDD03040C,LA,012345678912AABBqrcode^FS
　　　　　　^XZ

　　　　*/}@Overrideprotected void onDataReceived(final byte[] buffer, final int size) {runOnUiThread(new Runnable() {public void run() {if (mReception != null) {mReception.append(new String(buffer, 0, size));}}});}
}

/** Copyright 2009 Cedric Priscal* * Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at* * http://www.apache.org/licenses/LICENSE-2.0* * Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License. */package android_serialport_api;import java.io.File;
import java.io.IOException;
import java.security.InvalidParameterException;import android.content.SharedPreferences;public class Application extends android.app.Application {public SerialPortFinder mSerialPortFinder = new SerialPortFinder();private SerialPort mSerialPort = null;public SerialPort getSerialPort() throws SecurityException, IOException, InvalidParameterException {if (mSerialPort == null) {/* Read serial port parameters *///SharedPreferences sp = getSharedPreferences("android_serialport_api.sample_preferences", MODE_PRIVATE);//String path = sp.getString("DEVICE", "");//String path = "ttyS2";String path = "/dev/ttyS2";//指定端口//int baudrate = Integer.decode(sp.getString("BAUDRATE", "-1"));int baudrate = 9600;//指定速率/* Check parameters */if ( (path.length() == 0) || (baudrate == -1)) {throw new InvalidParameterException();}/* Open the serial port */mSerialPort = new SerialPort(new File(path), baudrate, 0);}return mSerialPort;}public void closeSerialPort() {if (mSerialPort != null) {mSerialPort.close();mSerialPort = null;}}
}

使用下面的方法执行指令： chmod 777 /dev/ttyS2

public void exeShell(String cmd){        try{Process p = Runtime.getRuntime().exec(cmd);BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String line = null;  while ((line = in.readLine()) != null) {  Log.i("exeShell",line);                  }  }catch(Throwable t){t.printStackTrace();}}