Zxing QR Reader library for Java/Android 的替代品？[已关闭]

我在这里找到了问题的答案 http://sourceforge.net/news/?group_id=189236

它比zxing快得多，并且更容易实现。

谢谢。

对于 iOS：

适用于 iOS （zbar.sourceforge.net/iphone） 和文稿 （zbar.sourceforge.net/iphone/sdkdoc/install.html）

无需安装zxing来实现qr阅读器，只需创建一个类Intintegrator.java和IntentResult.java文件并从您的活动中调用即可。

这是这个的源代码....

在此处查看完整源代码

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));
  }

}

而 IntentResult.java用于保存所选条形码或QR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();
      }

    }

现在如何从您的活动中调用这些类

  btnScanBarCode.setOnClickListener(new View.OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        // TODO Auto-generated method stub
                    IntentIntegrator integrator = new IntentIntegrator(BarCodeReaderActivity.this);
                integrator.initiateScan();  



                    }
                });

而在 onActivityResult 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();
          }
    }