除了Zxing库，还有什么其他库可以用于创建QR码阅读器，即使它不是免费的。
当然，免费的会更好。但我也愿意支付费用以获得易于自定义且节省时间的库。
谢谢。
Java/Android的zxing QR阅读器库的替代方案是什么？
47
- a fair player
7
2出于好奇，为什么不使用zxing？ - Sean Owen
4你的项目肯定不涉及复制条形码扫描器的用户界面，否则你必须使用zxing。那确实不太好。在自己的应用程序中重用扫描库是可以的，但严重复制粘贴是不好的。 - Sean Owen
那么重复使用库并修改扫描仪用户界面是可以接受的吗？ - Piyush
1尝试使用Google Android Vision API：https://developers.google.com/vision/ - Olcay Ertaş
我使用Google Vision API制作了一个条形码阅读器库，你可以在这里尝试它 https://github.com/EdwardvanRaak/MaterialBarcodeScanner 你也可以将其用作自己实现的示例代码。 - Edward van Raak
显示剩余2条评论
3个回答
69
我在这里找到了我的问题的答案：http://sourceforge.net/news/?group_id=189236
这比zxing快得多，实现起来也更容易。
谢谢。
iOS平台：
iOS平台可以使用zbar（zbar.sourceforge.net/iphone），相关文档和安装指南请参考（zbar.sourceforge.net/iphone/sdkdoc/install.html）。
- a fair player
10
6比zxing好得多。 - Arian
2@DeshanR 先生，这是 ZBar 而不是 zBra。 - Rohit
这真的是我想要的！！在我的项目中，我过去常常使用zxing来解码QR码，但当我的QR码出现在电视上并且不太可能是正方形（如矩形...）时，ZXING表现非常糟糕（扫描时间长且结果错误！！）！！不过，它仍然是一个非常棒的项目。 - Kevin
我想知道在IOS中是否存在类似于ZBar库的库。 - Mohammed Saleem
1@MohammedSaleem 适用于 iOS（http://zbar.sourceforge.net/iphone/）和文档（http://zbar.sourceforge.net/iphone/sdkdoc/install.html）。 - a fair player
显示剩余5条评论
23
实现QR阅读器无需安装zxing，只需创建一个IntentIntegrator.java类和一个IntentResult.java文件，并从您的活动中调用即可。
以下是源代码...
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();
}
/**
* <p>Call this from your {@link Activity}'s
* {@link Activity#onActivityResult(int, int, Intent)} method.</p>
*
* @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));
}
}
IntentResult.java用于包含所选条形码或二维码的信息。
/** * */
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();
}
}
现在学习如何从你的 Activity 中调用这些类。
btnScanBarCode.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
IntentIntegrator integrator = new IntentIntegrator(BarCodeReaderActivity.this);
integrator.initiateScan();
}
});
在 onActivityResult 方法中
@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();
}
}
- Ashish Dwivedi
7
9我同意这是最好的方法...但是提问者除了zxing还想寻求其他解决方案。 - Sean Owen
3客户要求一个集成版本时，这就变得复杂了。 - Martin
1这提示我安装条形码扫描器。 - Siavash
问题在于如果想要进行任何更改，你都无法实现。 - StarWind0
非常容易。太好了。谢谢。 - Boris Karloff
显示剩余2条评论
13
我有同样的问题。我下载了ZXing库并将其集成到我的项目中。集成非常困难而且杂乱无章，我花了很多时间清理项目，只使用QRCode部分。现在它能够工作了，但是其中一些Motorola设备（Atrix和DroidX - Android 2.3）存在已知问题，即CaptureActivity显示相机的白屏。这是一个库的问题，但是来自ZXing团队的人不会修复它。据说在Htc Nexus One上也存在这个问题，这是一个帖子：https://groups.google.com/forum/#!topic/zxing/BofniyFVZaQ。
@Sean
我知道你是ZXing的创始人。条形码扫描应用程序非常棒，但将其作为库用于应用程序则不是。我建议将应用程序与库分离，并编写良好的文档。另外，我不明白为什么你停止了对iOS的支持。
- user1173015
3
17条形码扫描应用很不错，但将其作为库使用到应用程序中并不理想。……我完全同意你的看法。 - a fair player
4条形码扫描器不是一个库，而是一个应用程序。我一直要求人们不要克隆它。core/始终与android/分开。iOS支持并没有被放弃；Steven仍在开发移植版。因此，我不理解这三个观点的任何一个。 - Sean Owen
它并不是作为嵌入式ARCode阅读器开发的，因此不易使用！ - fralbo
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