1D/2D android secondary development

Size: px

Start display at page:

Download "1D/2D android secondary development"

Rafe Richards
6 years ago
Views:

serialport package and all the java files in the package to the Project- src. There codes are used for calling the functions in the so. 3.

1 1D/2D android secondary development The example in this document is developed in eclipse. 1. Import library to project Copy the filefolder <armeabi> and <armeabi- v7a> to the Project- libs 2.Copy JAVA Code Copy cn.pda.serialport package and all the java files in the package to the Project- src. There codes are used for calling the functions in the so. 3.Function API PDA Serial Port Operation - SerialPort.java 3.1 SerialPort(int port, int baudrate, int flags) Function: Active and initialized Serial Port Parameter: int port int baudrate int flags Return: Serial Port operation example. Note: This is constructor, will throw exception when there is problem in the serial port.

2 3.2 getinputstream() Functions: Get the input stream of the serial port. Parameter: No Paremeter Return: InputStream Note: When scanning, get the data from the input stream though the serial port. 3.3 scaner_poweron() Functions: Power on the Scanner Parameter: No Return: No Note: Power on the Scanner 3.4 scaner_poweroff() Functions: Power off the Scanner Parameter: No Return: No Note: Power off the scanner 3.5 scaner_trigon() Functions: Higher the Power level for laser scanning Parameter: No Return: No Note: Higher the Power level for laser scanning 3.6 scaner_trigoff() Functions: Lower the power level Parameter: No Return: No Note: Lower the power level, working with the scanner_trigon(). If called the scanner_trigon() and cannot make the power high, then need to call scanner_trigoff() and then call scanner_trigon().

3 4. The implementation of the Scanning In the ScanDemo.apk, the scan functions are encapsulated in the ScanThread.java. The scan function is achieved by operating serial port. 4.1 Initialization of the serial port private SerialPort mserialport ; private InputStream is ; private OutputStream os ; /*serialport parameter*/ private int port = 0; private int baudrate = 9600; private int flags = 0; private Handler handler ; public static int SCAN = 1001; //messege recv mode /** * if throw exception, serialport initialize fail. SecurityException IOException */ public ScanThread(Handler handler) throws SecurityException, IOException{ this.handler = handler; mserialport = new SerialPort(port, baudrate, flags); mserialport.scaner_poweron(); is = mserialport.getinputstream(); os = mserialport.getoutputstream(); Thread.sleep(50); catch (InterruptedException e) { // TODO Auto-generated catch block /** clear useless data **/ byte[] temp = new byte[128]; is.read(temp); Note: By default the Parameters: Port=0; baudrate=9600; flags=0; the scanner will have some

4 useless data when power on, please clear all the data when power on. Bright Alliance Technology Limited 4.2 Monitor Serial port buffer public void run() { int size = 0; byte[] buffer = new byte[2048]; int available = 0; while(!isinterrupted()){ available = is.available(); if(available > 0){ size = is.read(buffer); if(size > 0){ sendmessege(buffer, size, SCAN); catch (IOException e) { super.run(); private void sendmessege(byte[] data, int datalen, int mode){ String datastr = new String(data, 0, datalen); Bundle bundle = new Bundle(); bundle.putstring("data", datastr); Message msg = new Message(); msg.what = mode; msg.setdata(bundle); handler.sendmessage(msg); Note: After the scanner is active, when scanning the 1D/2D code, you can get the data in the Serial port input stream. 4.3 Active Scanning public void scan(){ if(mserialport.scaner_trig_stat() == true){

5 mserialport.scaner_trigoff(); Thread.sleep(50); catch (InterruptedException e) { // TODO Auto-generated catch block mserialport.scaner_trigon(); 4.4 Close the serial port and power off when exit the program public void close(){ if(mserialport!= null){ mserialport.scaner_poweroff(); if(is!= null){ is.close(); if(os!= null){ os.close(); catch (IOException e) { mserialport.close(port); 4.5 ScanThread.java Code package cn.pda.scan; import java.io.ioexception; import java.io.inputstream; import java.io.outputstream; import android.os.bundle; import android.os.handler; import android.os.message;

6 import cn.pda.serialport.serialport; public class ScanThread extends Thread { private SerialPort mserialport ; private InputStream is ; private OutputStream os ; /*serialport parameter*/ private int port = 0; private int baudrate = 9600; private int flags = 0; private Handler handler ; public static int SCAN = 1001; //messege recv mode /** * if throw exception, serialport initialize fail. SecurityException IOException */ public ScanThread(Handler handler) throws SecurityException, IOException{ this.handler = handler; mserialport = new SerialPort(port, baudrate, flags); mserialport.scaner_poweron(); is = mserialport.getinputstream(); os = mserialport.getoutputstream(); Thread.sleep(50); catch (InterruptedException e) { // TODO Auto- generated catch block /** clear useless data **/ byte[] temp = new byte[128]; public void run() { int size = 0;

7 byte[] buffer = new byte[2048]; int available = 0; while(!isinterrupted()){ available = is.available(); if(available > 0){ size = is.read(buffer); if(size > 0){ sendmessege(buffer, size, SCAN); catch (IOException e) { super.run(); private void sendmessege(byte[] data, int datalen, int mode){ String datastr = new String(data, 0, datalen); Bundle bundle = new Bundle(); bundle.putstring("data", datastr); Message msg = new Message(); msg.what = mode; msg.setdata(bundle); handler.sendmessage(msg); public void scan(){ if(mserialport.scaner_trig_stat() == true){ mserialport.scaner_trigoff(); Thread.sleep(50); catch (InterruptedException e) { // TODO Auto- generated catch block mserialport.scaner_trigon(); public void close(){ if(mserialport!= null){ mserialport.scaner_poweroff();

8 if(is!= null){ is.close(); if(os!= null){ os.close(); catch (IOException e) { mserialport.close(port); The code are only for the scanning function in the Demo, for reference only 4.6 The Call of ScanThread.java ScanThread instantiated scanthread = new ScanThread(mHandler); catch (Exception e) { // 出现异常 Toast.makeText(getApplicationContext(), "serialport init fail", 0).show(); return; // scanthread.start(); Call Scanning buttonscan.setonclicklistener(new OnClickListener() public void onclick(view v) { scanthread.scan(); ); Get the Return Data private Handler mhandler = new Handler() { public void handlemessage(android.os.message msg) {

9 if (msg.what == ScanThread.SCAN) { String data = msg.getdata().getstring("data"); // Toast.makeText(getApplicationContext(), data, 0).show(); sortandadd(listbarcode, data); addlistview(); eidtbarcount.settext(listbarcode.size() + ""); ; ;

Thread. A Thread is a concurrent unit of execution. The thread has its own call stack for methods being invoked, their arguments and local variables.

Thread. A Thread is a concurrent unit of execution. The thread has its own call stack for methods being invoked, their arguments and local variables. 1 Thread A Thread is a concurrent unit of execution. The thread has its own call stack for methods being invoked, their arguments and local variables. Each virtual machine instance has at least one main