我已经在Android (v2.3)上工作了几个星期，我偶然发现了 IDTECH 的Unimag Card Swiper的一些问题。
该单元带有一个稀缺的文档，来自 SDK 的演示应用程序实现了固件更新和一些用于对话框的类等，这确实混淆了如何实现基本功能（添加到代码中的少数且不太好的注释中）。
我已经在基本活动中实现了接口，并试图检测单元何时连接或断开，但似乎侦听器将两个事件（连接/断开）都捕获为“断开”，更不用说尝试读取卡了。
有没有人在 Android 上使用过这个单元并有一些明确的例子？
顺便说一下，这是我的课：
package com.card.swipe;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import IDTech.MSR.uniMag.uniMagReader;
import IDTech.MSR.uniMag.uniMagReaderMsg;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
public class CardSwipeTestActivity extends Activity implements uniMagReaderMsg {
private uniMagReader myUniMagReader = null;
private TextView etCardData;
private String _strMSRData = null;
private byte[]_MSRData = null;
private String _strStatus = null;
private int _nGetChallengeResult = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// InitializeUI();
InitializeReader();
String strManufacture = myUniMagReader.getInfoManufacture();
String strModel = myUniMagReader.getInfoModel();
String strSDKVerInfo = myUniMagReader.getSDKVersionInfo();
String strOSVerInfo = android.os.Build.VERSION.RELEASE;
etCardData = (TextView)findViewById(R.id.text_view);
etCardData.setText("Phone: "+strManufacture+"\n"+"Model: "+strModel+"\n"+"SDK Ver: "+strSDKVerInfo+"\nOS Version: "+strOSVerInfo);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
if(myUniMagReader!=null)
{
//you should stop swipe card and unregister when the application go to background
myUniMagReader.stopSwipeCard();
// myUniMagReader.unregisterListen();
// myUniMagReader.release();
}
super.onPause();
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
// you should register to listen the headset event when the application resumed.
// if(myUniMagReader!=null)
// {
//// myUniMagReader.registerListen();
// if(_bCheckedSaveLogItem==true)
// myUniMagReader.setSaveLogEnable(true);
// else
// myUniMagReader.setSaveLogEnable(false);
// }
// if(itemStartSC!=null)
// itemStartSC.setEnabled(true);
// waitingCommandResult=false;
super.onResume();
}
@Override
protected void onDestroy() {
myUniMagReader.release();
super.onDestroy();
android.os.Process.killProcess(android.os.Process.myPid());
}
//********************************************************************************//
@Override
public boolean getUserGrant(int arg0, String arg1) {
// TODO Auto-generated method stub
return false;
}
@Override
public void onReceiveMsgAutoConfigProgress(int arg0) {
// TODO Auto-generated method stub
}
@Override
public void onReceiveMsgCardData(byte arg0, byte[] arg1) {
// TODO Auto-generated method stub
Log.d("SWIPE", "Card swiped!");
Toast.makeText(getApplicationContext(), "Card swiped!", Toast.LENGTH_SHORT).show();
}
@Override
public void onReceiveMsgCommandResult(int arg0, byte[] arg1) {
// TODO Auto-generated method stub
}
@Override
public void onReceiveMsgConnected() {
Log.d("CONNECTION","Swiper Connected");
Toast.makeText(getApplicationContext(), "Swiper Connected!", Toast.LENGTH_SHORT).show();
}
@Override
public void onReceiveMsgDisconnected() {
Log.d("CONNECTION","Swiper Disconnected");
Toast.makeText(getApplicationContext(), "Swiper Disconnected!", Toast.LENGTH_SHORT).show();
}
@Override
public void onReceiveMsgFailureInfo(int arg0, String arg1) {
// TODO Auto-generated method stub
Log.d("CONNECTION","Swiper Failure");
}
@Override
public void onReceiveMsgSDCardDFailed(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onReceiveMsgTimeout(String arg0) {
Log.d("TIMEOUT","Timed out!");
Toast.makeText(getApplicationContext(), "Timed out!", Toast.LENGTH_SHORT).show();
}
@Override
public void onReceiveMsgToConnect() {
Log.d("CONNECTION","Swiper Powered Up");
Toast.makeText(getApplicationContext(), "Swiper Powered Up", Toast.LENGTH_SHORT).show();
}
@Override
public void onReceiveMsgToSwipeCard() {
Log.d("SWIPE","Ready to swipe!");
Toast.makeText(getApplicationContext(), "Ready to swipe!", Toast.LENGTH_SHORT).show();
}
//********************************************************************************//
private void InitializeReader()
{
if(myUniMagReader==null)
myUniMagReader = new uniMagReader(this,this);
myUniMagReader.setVerboseLoggingEnable(true);
myUniMagReader.registerListen();
//load the XML configuratin file
String fileNameWithPath = getXMLFileFromRaw();
if(!isFileExist(fileNameWithPath)) { fileNameWithPath = null; }
myUniMagReader.setXMLFileNameWithPath(fileNameWithPath);
myUniMagReader.loadingConfigurationXMLFile(true);
myUniMagReader.setTimeoutOfSwipeCard(5);
}
private boolean isFileExist(String path) {
if(path==null)
return false;
File file = new File(path);
if (!file.exists()) {
return false ;
}
return true;
}
private String getXMLFileFromRaw( ){
//the target filename in the application path
String fileNameWithPath = null;
fileNameWithPath = "idt_unimagcfg_default.xml";
try{
InputStream in = getResources().openRawResource(R.raw.idt_unimagcfg_default);
int length = in.available();
byte [] buffer = new byte[length];
in.read(buffer);
in.close();
deleteFile(fileNameWithPath);
FileOutputStream fout = openFileOutput(fileNameWithPath, MODE_PRIVATE);
fout.write(buffer);
fout.close();
// to refer to the application path
File fileDir = this.getFilesDir();
fileNameWithPath = fileDir.getParent() + java.io.File.separator + fileDir.getName();
fileNameWithPath = fileNameWithPath+java.io.File.separator+"idt_unimagcfg_default.xml";
}
catch(Exception e){
e.printStackTrace();
fileNameWithPath = null;
}
return fileNameWithPath;
}
public void swipe(View v)
{
if(myUniMagReader!=null)
{
myUniMagReader.startSwipeCard();
}
if(myUniMagReader.isSwipeCardRunning()==true)
{
Log.d("SWIPE","Swipe Card Running!");
}
}
private String getHexStringFromBytes(byte []data)
{
if(data.length<=0) return null;
StringBuffer hexString = new StringBuffer();
String fix = null;
for (int i = 0; i < data.length; i++) {
fix = Integer.toHexString(0xFF & data[i]);
if(fix.length()==1)
fix = "0"+fix;
hexString.append(fix);
}
fix = null;
fix = hexString.toString();
return fix;
}
public byte[] getBytesFromHexString(String strHexData)
{
if (1==strHexData.length()%2) {
return null;
}
byte[] bytes = new byte[strHexData.length()/2];
for (int i=0;i<strHexData.length()/2;i++) {
bytes[i] = (byte) Integer.parseInt(strHexData.substring(i*2, (i+1)*2) , 16);
}
return bytes;
}
}
（那里也有一些未实现的方法）