我正在创建一个音频刷卡读卡器，但我遇到了 windows 错误。我无法追踪导致代码错误的原因。谁能帮我指出导致我的代码错误的原因？任何想法将不胜感激。
这是我的代码：
public class SReaderActivity extends Activity {
public final String TAG = "SReaderActivity";
Button swipe, get;// detect, stop
TextView result_text, mTitle;
private TimeCount time = null;
private AudioManager am = null;
int maxVol;
private ProgressDialog progressDialog;
private boolean mHeadsetPlugged = false;
private BroadcastReceiver mHeadsetReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
boolean hasHeadset = (intent.getIntExtra("state", 0) == 1);
boolean hasMicroPhone = (intent.getIntExtra("microphone", 0) == 1);
if (hasHeadset && hasMicroPhone) {
mHeadsetPlugged = true;
} else {
mHeadsetPlugged = false;
if (sreader != null)
sreader.Stop();
handler.post(disable_button);
}
handler.post(mHeadsetPluginHandler);
}
}
};
private Handler handler = new Handler();
SReaderApi sreader = null;
private String version = null;
private String ksn = null;
private String random = null;
private String workingkey = null;
private String encryption_data = null;
private String decryption_data = null;
private String T1PAN_data = null;
private String T1Name_Exd = null;
private String T2PAN_data = null;
private String T2Exd_data = null;
private Runnable mHeadsetPluginHandler = new Runnable() {
public void run() {
String plug_str = mHeadsetPlugged ? "plugin" : "unplugin";
Toast.makeText(SReaderActivity.this, "Headset " + plug_str, Toast.LENGTH_SHORT).show();
if (sreader != null && mHeadsetPlugged == false) { // Device unplug APP close
CloseSinWave();
finish();
} else {
onDetect();
}
}
};
private Runnable disable_button = new Runnable() {
public void run() {
swipe.setEnabled(false);
get.setEnabled(false);
}
};
private Runnable enable_button = new Runnable() {
public void run() {
get.setText(R.string.get);
swipe.setClickable(true);
swipe.setEnabled(true);
swipe.setText(R.string.swipe);
}
};
private Runnable enable_get = new Runnable() {
public void run() {
get.setEnabled(true);
get.setClickable(true);
}
};
private Runnable timeout_ack = new Runnable() {
public void run() {
Toast.makeText(SReaderActivity.this, "Timeout!!!", Toast.LENGTH_SHORT).show();
}
};
private Runnable unknown_err = new Runnable() {
public void run() {
result_text.setText(R.string.unknown_error);
}
};
private Runnable detcet = new Runnable() {
public void run() {
String txt = "Detect OK\n";
result_text.setText(txt);
}
};
private Runnable display_encryptiondata = new Runnable() {
public void run() {
String txt = "Encryption data\n";
txt += encryption_data + "\n\n\n";
result_text.setText(txt);
}
};
private Runnable display_decryptiondata = new Runnable() {
public void run() {
String txt = "Encryption data\n";
txt += encryption_data + "\n\n\nDecryption data\n";
txt += decryption_data + "\n";
result_text.setText(txt);
}
};
private Runnable display_get_data = new Runnable() {
public void run() {
String txt = "Decryption data\n";
txt += decryption_data + "\n\n\n\n";
txt += "T1PAN:" + T1PAN_data + "\n";
txt += "T1Name_Exd:" + T1Name_Exd + "\n";
txt += "T2PAN:" + T2PAN_data + "\n";
txt += "T2Exd:" + T2Exd_data + "\n";
result_text.setText(txt);
}
};
private Runnable clear_all = new Runnable() {
public void run() {
encryption_data = "";
decryption_data = "";
T1PAN_data = "";
T1Name_Exd = "";
T2PAN_data = "";
T2Exd_data = "";
result_text.setText("");
}
};
private Runnable clear_encryption = new Runnable() {
public void run() {
encryption_data = "";
decryption_data = "";
T1PAN_data = "";
T1Name_Exd = "";
T2PAN_data = "";
T2Exd_data = "";
result_text.setText("");
}
};
private Runnable clear_carddata = new Runnable() {
public void run() {
encryption_data = "";
T1PAN_data = "";
T1Name_Exd = "";
T2PAN_data = "";
T2Exd_data = "";
result_text.setText("");
}
};
private Runnable settext_swpie = new Runnable() {
public void run() {
swipe.setClickable(true);
swipe.setText(R.string.swipe);
}
};
private Runnable begin_get = new Runnable() {
public void run() {
myToast = new MyToast(SReaderActivity.this, "get T1&T2 Data...");
myToast.show();
}
};
private Runnable settext_get = new Runnable() {
public void run() {
get.setClickable(true);
get.setText(R.string.get);
}
};
public class MyToast {
private Context mContext = null;
private Toast mToast = null;
private Handler mHandler = null;
private Runnable mToastThread = new Runnable() {
public void run() {
mToast.show();
mHandler.postDelayed(mToastThread, 3000);
}
};
public MyToast(Context context, String txt) {
mContext = context;
mHandler = new Handler(mContext.getMainLooper());
mToast = Toast.makeText(mContext, txt, Toast.LENGTH_LONG);
}
public void setText(String text) {
mToast.setText(text);
}
public void show() {
mHandler.post(mToastThread);
}
public void cancel() {
mHandler.removeCallbacks(mToastThread);
mToast.cancel();
}
}
private MyToast myToast = null;
class TimeCount extends CountDownTimer {
int id;
public TimeCount(int id, long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);// ²ÎÊýÒÀ´ÎΪ×Üʱ³¤,ºÍ¼ÆʱµÄʱ¼ä¼ä¸ô
this.id = id;
}
@Override
public void onFinish() {// ¼ÆʱÍê±Ïʱ´¥·¢
if (id == R.id.swipe) {
swipe.setText(R.string.reswipe);
swipe.setClickable(true);
}
else if (id == R.id.get) {
get.setText(R.string.get);
get.setClickable(true);
}
}
@Override
public void onTick(long millisUntilFinished) {// ¼Æʱ¹ý³ÌÏÔʾ
CharSequence str = getString(R.string.second);
if (id == R.id.swipe) {
swipe.setClickable(false);
}
else if (id == R.id.get) {
get.setClickable(false);
}
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.swipe);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title);
mTitle = (TextView) findViewById(R.id.title_left_text);
mTitle.setText(R.string.version_name);
am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
IntentFilter iFilter = new IntentFilter();
iFilter.addAction(Intent.ACTION_HEADSET_PLUG);
iFilter.addCategory(Intent.CATEGORY_DEFAULT);
registerReceiver(mHeadsetReceiver, iFilter);
swipe = (Button) this.findViewById(R.id.swipe);
swipe.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
onSwipe();
}
});
get = (Button) this.findViewById(R.id.get);
get.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
onGet();
}
});
result_text = (TextView) this.findViewById(R.id.result);
swipe.setEnabled(false);
get.setEnabled(false);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
maxVol = am.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
am.setStreamVolume(AudioManager.STREAM_MUSIC, maxVol, 0);
}
public void onDestroy() {
unregisterReceiver(mHeadsetReceiver);
super.onDestroy();
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_MENU: {
openOptionsDialog();
return true;
}
case KeyEvent.KEYCODE_BACK: { // Log.WritetoFile();
if (sreader != null) {
sreader.Stop();
sreader = null;
if (myToast != null)
myToast.cancel();
finish();
System.exit(0);
return true;
}
}
}
return super.onKeyDown(keyCode, event);
}
public void onUserLeaveHint() { // this only executes when Home is selected.
// do stuff
super.onUserLeaveHint();
if (sreader != null) {
sreader.Stop();
sreader = null;
if (myToast != null)
myToast.cancel();
finish();
System.exit(0);
}
}
public void onAttachedToWindow() {
super.onAttachedToWindow();
this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
}
private void openOptionsDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(SReaderActivity.this);
dialog.setTitle("SS505 sReader");
dialog.setMessage("Magnetic Card Reader APP");
dialog.setNegativeButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
dialog.show();
}
private void onSwipe() {
if (sreader == null)
return;
progressDialog = ProgressDialog.show(this, "Loadding Key", "Please wait swipe card ...", true, false);
time = new TimeCount(R.id.swipe, 15000, 1000);
time.start();// ¿ªÊ¼¼Æʱ
swipe.setEnabled(false);
get.setEnabled(false);
new Thread() {
public void run() {
String data = null;
decryption_data = null;
encryption_data = null;
handler.post(clear_encryption);
try {
random = sreader.GetRandom(10000);
if (random == null) {
progressDialog.dismiss();
String err = sreader.GetErrorString();
if (err.equalsIgnoreCase("cancel all"))
return;
}
workingkey = sreader.GenerateWorkingKey(random, ksn);
progressDialog.dismiss();
data = sreader.ReadCard(15000);
} catch (Exception ex) {
progressDialog.dismiss();
if (ex instanceof TimeoutException) {
time.cancel();
sreader.Cancel();
handler.post(enable_button);
handler.post(timeout_ack);
return;
} else
handler.post(unknown_err);
CloseSinWave();
}
time.cancel();
if (data == null) {
encryption_data = sreader.GetErrorString();
if (encryption_data.equalsIgnoreCase("cancel all"))
return;
handler.post(display_encryptiondata);
} else {
encryption_data = "\n" + data;
handler.post(display_encryptiondata);
String d_str = sreader.TriDesDecryption(workingkey, data);
if (d_str != null) {
if (false == d_str.startsWith("A1")) {
return;
}
int index2 = FindSplitCharIndex(d_str, "A2", 2);
int index3 = FindSplitCharIndex(d_str, "A3", index2 + 2);
if (index2 < 0 || index3 < 0) {
return;
}
String t1 = d_str.substring(2, index2);
String t2 = d_str.substring(index2 + 2, index3);
String t3 = d_str.substring(index3 + 2);
String ex_msg = "";
if (t1.equals(""))
decryption_data = "\nT1=" + "T1 Empty";
else
decryption_data = "\nT1=" + changeHexString2CharString(t1);
if (t2.equals(""))
decryption_data += "\nT2=" + "T2 Empty";
else {
String e2 = changeHexString2CharString(t2);
if (e2.length() < 24 || e2.length() > 40)
ex_msg = "\nTrack2 " + getResources().getText(R.string.de_len) + e2.length() + "byte";
decryption_data += "\nT2=" + e2;
}
if (t3.equals(""))
decryption_data += "\nT3=" + "T3 Empty";
else
decryption_data += "\nT3=" + changeHexString2CharString(t3) + ex_msg;
handler.post(display_decryptiondata);
}
}
handler.post(enable_button);
handler.post(settext_swpie);
handler.post(enable_get);
}
}.start();
}
private int FindSplitCharIndex(String str, String split, int start) {
int i = start;
while (i < str.length() && i + 1 < str.length()) {
String e = str.substring(i, i + 2);
if (e.equals(split)) {
return i;
}
i += 2;
}
return -1;
}
private String changeHexString2CharString(String e) {
String char_txt = "";
for (int i = 0; i < e.length(); i = i + 2) {
String c = e.substring(i, i + 2);
char j = (char) Integer.parseInt(c, 16);
char_txt += j;
}
return char_txt;
}
private boolean Detect_sReader() {
mHeadsetPlugged = HeadSetUtils.checkHeadset();
if (!mHeadsetPlugged) {
result_text.setText(R.string.nodevice);
}
return mHeadsetPlugged;
}
private boolean GenerateSinWave() {
sreader = SReaderApi.getSreaderInstance();
if (sreader.Init() == true) {
sreader.Start();
am.setMode(AudioManager.MODE_NORMAL);
return true;
}
return false;
}
private void CloseSinWave() {
if (sreader != null)
sreader.Stop();
}
private void Initialization() {
swipe.setEnabled(false);
progressDialog = ProgressDialog.show(this, "", "Card Reader Detecting...", true, false);
new Thread() {
public void run() {
int i = 0;
try {
int j = 1;
boolean s_init = false;
while (j < 5) {
try {
s_init = sreader.Initial(2500);
if (s_init)
break;
} catch (Exception ex) {
if (ex instanceof TimeoutException) {
if (j == 4) {
handler.post(timeout_ack);
} else
sleep(1000);
} else {
handler.post(unknown_err);
break;
}
}
j++;
}
if (!s_init) {
CloseSinWave();
progressDialog.dismiss();
return;
}
i++;
ksn = sreader.GetKSN(5000);
if (ksn == null) {
String err = sreader.GetErrorString();
if (err.equalsIgnoreCase("cancel all"))
return;
throw new Exception("ksn is null");
}
handler.post(enable_button);
handler.post(detcet);
progressDialog.dismiss();
} catch (Exception ex) {
progressDialog.dismiss();
if (ex instanceof TimeoutException) {
handler.post(timeout_ack);
} else
handler.post(unknown_err);
CloseSinWave();
}
}
}.start();
}
private void onGet() {
if (sreader == null)
return;
time = new TimeCount(R.id.get, 10000, 1000);
time.start();// ¿ªÊ¼¼Æʱ
get.setEnabled(false);
swipe.setEnabled(false);
handler.post(begin_get);
new Thread() {
public void run() {
String Empty = "Empty";
int i = 0;
handler.post(clear_carddata);
try {
T1PAN_data = sreader.GetT1PAN(5000);
if (T1PAN_data == null) {
T1PAN_data = Empty;
} else {
T1PAN_data = changeHexString2CharString(T1PAN_data);
}
i++;
T1Name_Exd = sreader.GetT1HolderName_Exd(5000);
if (T1Name_Exd == null) {
T1Name_Exd = Empty;
} else {
T1Name_Exd = changeHexString2CharString(T1Name_Exd);
}
i++;
T2PAN_data = sreader.GetT2PAN(5000);
if (T2PAN_data == null) {
T2PAN_data = Empty;
} else {
T2PAN_data = changeHexString2CharString(T2PAN_data);
}
i++;
T2Exd_data = sreader.GetT2Exd(5000);
if (T2Exd_data == null) {
T2Exd_data = Empty;
} else {
T2Exd_data = changeHexString2CharString(T2Exd_data);
}
handler.post(display_get_data);
} catch (Exception ex) {
if (ex instanceof TimeoutException) {
time.cancel();
myToast.cancel();
sreader.Cancel();
handler.post(enable_button);
handler.post(timeout_ack);
return;
} else
handler.post(unknown_err);
CloseSinWave();
}
myToast.cancel();
time.cancel();
handler.post(settext_get);
handler.post(enable_button);
}
}.start();
}
private void onDetect() {
am.setStreamVolume(AudioManager.STREAM_MUSIC, maxVol, 0);
if (Detect_sReader() == true) {
handler.post(clear_all);
if (GenerateSinWave() == true) {
Initialization();
}
}
}
}
这是日志猫：
05-20 16:26:30.638: E/AndroidRuntime(1497): FATAL EXCEPTION: main
05-20 16:26:30.638: E/AndroidRuntime(1497): java.lang.IllegalArgumentException: Window type can not be changed after the window is added.
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.os.Parcel.readException(Parcel.java:1429)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.os.Parcel.readException(Parcel.java:1379)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.IWindowSession$Stub$Proxy.relayout(IWindowSession.java:634)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.ViewRootImpl.relayoutWindow(ViewRootImpl.java:3835)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1384)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
05-20 16:26:30.638: E/AndroidRuntime(1497): at android.view.Choreographer.doFrame(Choreographer.java:525)