Alternatywa dla biblioteki czytników QR ZXing dla Java/Android?


Czy istnieje inna biblioteka oprócz Zxing, której można użyć do utworzenia czytnika kodów QR,

nawet jeśli to nie jest darmowe?

oczywiście darmowy byłby świetny. ale jestem również skłonny zapłacić za bibliotekę, którą można łatwo dostosować i zaoszczędzić czas.
podziękować.
Zaproszony:
Anonimowy użytkownik

Anonimowy użytkownik

Potwierdzenie od:

Tutaj znalazłem odpowiedź na swoje pytanie

http://sourceforge.net/news/? group_id=189236
http://sourceforge.net/news/?group_id=189236
jest znacznie szybszy niż zxing i znacznie łatwiejszy do wdrożenia.
Podziękować.

Na iOS

:
na iOS (zbar.sourceforge.net/iphone) i dokumentację (zbar.sourceforge.net/iphone/sdkdoc/install.html)
Anonimowy użytkownik

Anonimowy użytkownik

Potwierdzenie od:

nie ma potrzeby instalowania zxing do implementacji czytnika qr, po prostu utwórz plik klasy

IntentIntegrator.java

i IntentResult.java i wywołaj go z poziomu swojej aktywności.
Oto kod źródłowy tego ....
Kompletny kod źródłowy można znaleźć tutaj
https://code.google.com/p/dwiv ... ckout
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.util.Log;
public final class IntentIntegrator { public static final int REQUEST_CODE = 0x0000c0de;// Only use bottom 16 bits
private static final String TAG = IntentIntegrator.class.getSimpleName(); public static final String DEFAULT_TITLE = "Install Barcode Scanner?";
public static final String DEFAULT_MESSAGE =
"This application requires Barcode Scanner. Would you like to install it?";
public static final String DEFAULT_YES = "Yes";
public static final String DEFAULT_NO = "No"; private static final String BS_PACKAGE = "com.google.zxing.client.android";// supported barcode formats
public static final Collection<String> PRODUCT_CODE_TYPES = list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "RSS_14");
public static final Collection<String> ONE_D_CODE_TYPES =
list("UPC_A", "UPC_E", "EAN_8", "EAN_13", "CODE_39", "CODE_93", "CODE_128",
"ITF", "RSS_14", "RSS_EXPANDED");
public static final Collection<String> QR_CODE_TYPES = Collections.singleton("QR_CODE");
public static final Collection<String> DATA_MATRIX_TYPES = Collections.singleton("DATA_MATRIX"); public static final Collection<String> ALL_CODE_TYPES = null; public static final Collection<String> TARGET_BARCODE_SCANNER_ONLY = Collections.singleton(BS_PACKAGE);
public static final Collection<String> TARGET_ALL_KNOWN = list( BS_PACKAGE,// Barcode Scanner
"com.srowen.bs.android",// Barcode Scanner+
"com.srowen.bs.android.simple"// Barcode Scanner+ Simple
// TODO add more -- what else supports this intent?
); private final Activity activity;
private String title;
private String message;
private String buttonYes;
private String buttonNo;
private Collection<String> targetApplications; public IntentIntegrator(Activity activity) {
this.activity = activity;
title = DEFAULT_TITLE;
message = DEFAULT_MESSAGE;
buttonYes = DEFAULT_YES;
buttonNo = DEFAULT_NO;
targetApplications = TARGET_ALL_KNOWN;
} public String getTitle() {
return title;
} public void setTitle(String title) {
this.title = title;
} public void setTitleByID(int titleID) {
title = activity.getString(titleID);
} public String getMessage() {
return message;
} public void setMessage(String message) {
this.message = message;
} public void setMessageByID(int messageID) {
message = activity.getString(messageID);
} public String getButtonYes() {
return buttonYes;
} public void setButtonYes(String buttonYes) {
this.buttonYes = buttonYes;
} public void setButtonYesByID(int buttonYesID) {
buttonYes = activity.getString(buttonYesID);
} public String getButtonNo() {
return buttonNo;
} public void setButtonNo(String buttonNo) {
this.buttonNo = buttonNo;
} public void setButtonNoByID(int buttonNoID) {
buttonNo = activity.getString(buttonNoID);
} public Collection<String> getTargetApplications() {
return targetApplications;
} public void setTargetApplications(Collection<String> targetApplications) {
this.targetApplications = targetApplications;
} public void setSingleTargetApplication(String targetApplication) {
this.targetApplications = Collections.singleton(targetApplication);
}/**
* Initiates a scan for all known barcode types.
*/
public AlertDialog initiateScan() {
return initiateScan(ALL_CODE_TYPES);
}/**
* Initiates a scan only for a certain set of barcode types, given as strings corresponding
* to their names in ZXing's {@code BarcodeFormat} class like "UPC_A". You can supply constants
* like {@link #PRODUCT_CODE_TYPES} for example.
*/
public AlertDialog initiateScan(Collection<String> desiredBarcodeFormats) {
Intent intentScan = new Intent(BS_PACKAGE + ".SCAN");
intentScan.addCategory(Intent.CATEGORY_DEFAULT);// check which types of codes to scan for
if (desiredBarcodeFormats != null) {
// set the desired barcode types
StringBuilder joinedByComma = new StringBuilder();
for (String format : desiredBarcodeFormats) {
if (joinedByComma.length() > 0) {
joinedByComma.append(',');
}
joinedByComma.append(format);
}
intentScan.putExtra("SCAN_FORMATS", joinedByComma.toString());
} String targetAppPackage = findTargetAppPackage(intentScan);
if (targetAppPackage == null) {
return showDownloadDialog();
}
intentScan.setPackage(targetAppPackage);
intentScan.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intentScan.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
activity.startActivityForResult(intentScan, REQUEST_CODE);
return null;
} private String findTargetAppPackage(Intent intent) {
PackageManager pm = activity.getPackageManager();
List<ResolveInfo> availableApps = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
if (availableApps != null) {
for (ResolveInfo availableApp : availableApps) {
String packageName = availableApp.activityInfo.packageName;
if (targetApplications.contains(packageName)) {
return packageName;
}
}
}
return null;
} private AlertDialog showDownloadDialog() {
AlertDialog.Builder downloadDialog = new AlertDialog.Builder(activity);
downloadDialog.setTitle(title);
downloadDialog.setMessage(message);
downloadDialog.setPositiveButton(buttonYes, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Uri uri = Uri.parse("market://details?id=" + BS_PACKAGE);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
try {
activity.startActivity(intent);
} catch (ActivityNotFoundException anfe) {
// Hmm, market is not installed
Log.w(TAG, "Android Market is not installed; cannot install Barcode Scanner");
}
}
});
downloadDialog.setNegativeButton(buttonNo, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {}
});
return downloadDialog.show();
}
/**
* Call this from your {@link Activity}'s
* {@link Activity#onActivityResult(int, int, Intent)} method. *
* @return null if the event handled here was not related to this class, or
* else an {@link IntentResult} containing the result of the scan. If the user cancelled scanning,
* the fields will be null.
*/
public static IntentResult parseActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
String formatName = intent.getStringExtra("SCAN_RESULT_FORMAT");
byte[] rawBytes = intent.getByteArrayExtra("SCAN_RESULT_BYTES");
int intentOrientation = intent.getIntExtra("SCAN_RESULT_ORIENTATION", Integer.MIN_VALUE);
Integer orientation = intentOrientation == Integer.MIN_VALUE ? null : intentOrientation;
String errorCorrectionLevel = intent.getStringExtra("SCAN_RESULT_ERROR_CORRECTION_LEVEL");
return new IntentResult(contents,
formatName,
rawBytes,
orientation,
errorCorrectionLevel);
}
return new IntentResult();
}
return null;
}
/**
* Shares the given text by encoding it as a barcode, such that another user can
* scan the text off the screen of the device.
*
* @param text the text string to encode as a barcode
*/
public void shareText(CharSequence text) {
Intent intent = new Intent();
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setAction(BS_PACKAGE + ".ENCODE");
intent.putExtra("ENCODE_TYPE", "TEXT_TYPE");
intent.putExtra("ENCODE_DATA", text);
String targetAppPackage = findTargetAppPackage(intent);
if (targetAppPackage == null) {
showDownloadDialog();
} else {
intent.setPackage(targetAppPackage);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
activity.startActivity(intent);
}
} private static Collection<String> list(String... values) {
return Collections.unmodifiableCollection(Arrays.asList(values));
}}

I IntentResult.java, aby zapisać wybrany kod kreskowy lub informacje o kodzie QR.
/**
*
*/
public final class IntentResult { private final String contents;
private final String formatName;
private final byte[] rawBytes;
private final Integer orientation;
private final String errorCorrectionLevel; IntentResult() {
this(null, null, null, null, null);
} IntentResult(String contents,
String formatName,
byte[] rawBytes,
Integer orientation,
String errorCorrectionLevel) {
this.contents = contents;
this.formatName = formatName;
this.rawBytes = rawBytes;
this.orientation = orientation;
this.errorCorrectionLevel = errorCorrectionLevel;
}/**
* @return raw content of barcode
*/
public String getContents() {
return contents;
}/**
* @return name of format, like "QR_CODE", "UPC_A". See {@code BarcodeFormat} for more format names.
*/
public String getFormatName() {
return formatName;
}/**
* @return raw bytes of the barcode content, if applicable, or null otherwise
*/
public byte[] getRawBytes() {
return rawBytes;
}/**
* @return rotation of the image, in degrees, which resulted in a successful scan. May be null.
*/
public Integer getOrientation() {
return orientation;
}/**
* @return name of the error correction level used in the barcode, if applicable
*/
public String getErrorCorrectionLevel() {
return errorCorrectionLevel;
} @Override
public String toString() {
StringBuilder dialogText = new StringBuilder(100);
dialogText.append("Format: ").append(formatName).append('\n');
dialogText.append("Contents: ").append(contents).append('\n');
int rawBytesLength = rawBytes == null ? 0 : rawBytes.length;
dialogText.append("Raw bytes: (").append(rawBytesLength).append(" bytes)\n");
dialogText.append("Orientation: ").append(orientation).append('\n');
dialogText.append("EC level: ").append(errorCorrectionLevel).append('\n');
return dialogText.toString();
} }

teraz, jak wywołać te zajęcia z Twojej aktywności
btnScanBarCode.setOnClickListener(new View.OnClickListener() { @Override
public void onClick(View v) {
// TODO Auto-generated method stub
IntentIntegrator integrator = new IntentIntegrator(BarCodeReaderActivity.this);
integrator.initiateScan(); }
});

A w onActivityResult d.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if (scanResult != null) {// handle scan result
contantsString = scanResult.getContents()==null?"0":scanResult.getContents();
if (contantsString.equalsIgnoreCase("0")) {
Toast.makeText(this, "Problem to get the contant Number", Toast.LENGTH_LONG).show(); }else {
Toast.makeText(this, contantsString, Toast.LENGTH_LONG).show(); } }
else{
Toast.makeText(this, "Problem to secan the barcode.", Toast.LENGTH_LONG).show();
}
}
Anonimowy użytkownik

Anonimowy użytkownik

Potwierdzenie od:

Mam ten sam problem. Pobrałem bibliotekę ZXing i zintegrowałem ją z moim projektem. Integracja jest bardzo złożona i czasochłonna, a ja spędzam dużo czasu na porządkowaniu projektu i używaniu tylko części QRCode. Teraz to działa, ale istnieje znany problem z niektórymi urządzeniami Motorola Atrix i DroidX (Android 2.3), w których CaptureActivity wyświetla biały ekran zamiast aparatu. To jest problem z biblioteką, ale ludzie z ZXing tego nie naprawią. Wygląda na to, że ten problem występuje również w Htc Nexus One. Ta wiadomość:

https://groups.google.com/foru ... FVZaQ
https://groups.google.com/foru ... FVZaQ
.
@Sean
Wiem, że jesteś założycielem ZXing. Aplikacja do skanowania kodów kreskowych jest świetna, ale używanie jej jako biblioteki w aplikacji nie jest. Proponuję wyodrębnić aplikację z biblioteki i napisać do niej dobrą dokumentację. Nie rozumiem też, dlaczego rezygnujesz z obsługi iOS.

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