android - एंड्रॉइड एप्लिकेशन में बारकोड छवि उत्पन्न करें




image barcode (3)

मुझे 1 डी बारकोड छवि उत्पन्न करने और इसे 13-वर्ण कोड के अनुसार ImageView पर सेट करने की आवश्यकता है। क्या कोई इस संबंध में मेरी सहायता कर सकता है?

https://code.i-harness.com


आप आसानी से बारकोड उत्पन्न करने के लिए zxing लाइब्रेरी का उपयोग कर सकते हैं।

सबसे पहले, libs फ़ोल्डर के तहत core.jar का पता लगाएं।

libs/core.jar

आप यहां से ZXing-2.1.zip डाउनलोड कर सकते हैं।

http://repo1.maven.org/maven2/com/google/zxing/ ( source )

फ़ाइल को अनजिप करने के बाद, जार फ़ाइल ढूंढें।

\ZXing-2.1\zxing-2.1\core\core.jar

और फिर नीचे अपना कोड लिखें।

import java.util.EnumMap;
import java.util.Map;

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;

public class BarcodeExampleActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    LinearLayout l = new LinearLayout(this);
    l.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
    l.setOrientation(LinearLayout.VERTICAL);

    setContentView(l);

    // barcode data
    String barcode_data = "123456";

    // barcode image
    Bitmap bitmap = null;
    ImageView iv = new ImageView(this);

    try {

        bitmap = encodeAsBitmap(barcode_data, BarcodeFormat.CODE_128, 600, 300);
        iv.setImageBitmap(bitmap);

    } catch (WriterException e) {
        e.printStackTrace();
    }

    l.addView(iv);

    //barcode text
    TextView tv = new TextView(this);
    tv.setGravity(Gravity.CENTER_HORIZONTAL);
    tv.setText(barcode_data);

    l.addView(tv);

    }

    /**************************************************************
     * getting from com.google.zxing.client.android.encode.QRCodeEncoder
     * 
     * See the sites below
     * http://code.google.com/p/zxing/
     * http://code.google.com/p/zxing/source/browse/trunk/android/src/com/google/zxing/client/android/encode/EncodeActivity.java
     * http://code.google.com/p/zxing/source/browse/trunk/android/src/com/google/zxing/client/android/encode/QRCodeEncoder.java
     */

    private static final int WHITE = 0xFFFFFFFF;
    private static final int BLACK = 0xFF000000;

    Bitmap encodeAsBitmap(String contents, BarcodeFormat format, int img_width, int img_height) throws WriterException {
    String contentsToEncode = contents;
    if (contentsToEncode == null) {
        return null;
    }
    Map<EncodeHintType, Object> hints = null;
    String encoding = guessAppropriateEncoding(contentsToEncode);
    if (encoding != null) {
        hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
        hints.put(EncodeHintType.CHARACTER_SET, encoding);
    }
    MultiFormatWriter writer = new MultiFormatWriter();
    BitMatrix result;
    try {
        result = writer.encode(contentsToEncode, format, img_width, img_height, hints);
    } catch (IllegalArgumentException iae) {
        // Unsupported format
        return null;
    }
    int width = result.getWidth();
    int height = result.getHeight();
    int[] pixels = new int[width * height];
    for (int y = 0; y < height; y++) {
        int offset = y * width;
        for (int x = 0; x < width; x++) {
        pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
        }
    }

    Bitmap bitmap = Bitmap.createBitmap(width, height,
        Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
    }

    private static String guessAppropriateEncoding(CharSequence contents) {
    // Very crude at the moment
    for (int i = 0; i < contents.length(); i++) {
        if (contents.charAt(i) > 0xFF) {
        return "UTF-8";
        }
    }
    return null;
    }

}

आपके उत्तरों के लिए धन्यवाद दोस्तों ... इस बीच मुझे समाधान मिला, इसलिए मैंने यहां उपयोग किया है: http://www.onbarcode.com/products/android_barcode/barcodes/ean13.html यह एक पुस्तकालय है जो मेरे लिए ठीक काम करता है किसी के पास एक ही समस्या है जिसका मैं सुझाव देता हूं।

एक बार फिर धन्यवाद!


public Bitmap Ean13_Encode(String qrData,  int qrCodeDimention) {
    Bitmap bitmap= Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);       
    QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(qrData, null,
    Contents.Type.TEXT, BarcodeFormat.EAN_13.toString(), qrCodeDimention);
    try {
        bitmap = qrCodeEncoder.encodeAsBitmap();
    } catch (WriterException e) {
        e.printStackTrace();
    };
    return bitmap;
};

public final class QRCodeEncoder {
private static final int WHITE = 0xFFFFFFFF;
private static final int BLACK = 0xFF000000;

private int dimension = Integer.MIN_VALUE;
private String contents = null;
private String displayContents = null;
private String title = null;
private BarcodeFormat format = null;
private boolean encoded = false;

public QRCodeEncoder(String data, Bundle bundle, String type, String format, int dimension) {
    this.dimension = dimension;
    encoded = encodeContents(data, bundle, type, format);
}

public String getContents() {
    return contents;
}

public String getDisplayContents() {
    return displayContents;
}

public String getTitle() {
    return title;
}

private boolean encodeContents(String data, Bundle bundle, String type, String formatString) {
    // Default to QR_CODE if no format given.
    format = null;
    if (formatString != null) {
        try {
            format = BarcodeFormat.valueOf(formatString);
        } catch (IllegalArgumentException iae) {
            // Ignore it then
        }
    }
    if (format == null || format == BarcodeFormat.QR_CODE) {
        this.format = BarcodeFormat.QR_CODE;
        encodeQRCodeContents(data, bundle, type);
    } else if (data != null && data.length() > 0) {
        contents = data;
        displayContents = data;
        title = "Text";
    }
    return contents != null && contents.length() > 0;
}

private void encodeQRCodeContents(String data, Bundle bundle, String type) {
    if (type.equals(Contents.Type.TEXT)) {
        if (data != null && data.length() > 0) {
            contents = data;
            displayContents = data;
            title = "Text";
        }
    } else if (type.equals(Contents.Type.EMAIL)) {
        data = trim(data);
        if (data != null) {
            contents = "mailto:" + data;
            displayContents = data;
            title = "E-Mail";
        }
    } else if (type.equals(Contents.Type.PHONE)) {
        data = trim(data);
        if (data != null) {
            contents = "tel:" + data;
            displayContents = PhoneNumberUtils.formatNumber(data);
            title = "Phone";
        }
    } else if (type.equals(Contents.Type.SMS)) {
        data = trim(data);
        if (data != null) {
            contents = "sms:" + data;
            displayContents = PhoneNumberUtils.formatNumber(data);
            title = "SMS";
        }
    } else if (type.equals(Contents.Type.CONTACT)) {
        if (bundle != null) {
            StringBuilder newContents = new StringBuilder(100);
            StringBuilder newDisplayContents = new StringBuilder(100);

            newContents.append("MECARD:");

            String name = trim(bundle.getString(ContactsContract.Intents.Insert.NAME));
            if (name != null) {
                newContents.append("N:").append(escapeMECARD(name)).append(';');
                newDisplayContents.append(name);
            }

            String address = trim(bundle.getString(ContactsContract.Intents.Insert.POSTAL));
            if (address != null) {
                newContents.append("ADR:").append(escapeMECARD(address)).append(';');
                newDisplayContents.append('\n').append(address);
            }

            Collection<String> uniquePhones = new HashSet<String>(Contents.PHONE_KEYS.length);
            for (int x = 0; x < Contents.PHONE_KEYS.length; x++) {
                String phone = trim(bundle.getString(Contents.PHONE_KEYS[x]));
                if (phone != null) {
                    uniquePhones.add(phone);
                }
            }
            for (String phone : uniquePhones) {
                newContents.append("TEL:").append(escapeMECARD(phone)).append(';');
                newDisplayContents.append('\n').append(PhoneNumberUtils.formatNumber(phone));
            }

            Collection<String> uniqueEmails = new HashSet<String>(Contents.EMAIL_KEYS.length);
            for (int x = 0; x < Contents.EMAIL_KEYS.length; x++) {
                String email = trim(bundle.getString(Contents.EMAIL_KEYS[x]));
                if (email != null) {
                    uniqueEmails.add(email);
                }
            }
            for (String email : uniqueEmails) {
                newContents.append("EMAIL:").append(escapeMECARD(email)).append(';');
                newDisplayContents.append('\n').append(email);
            }

            String url = trim(bundle.getString(Contents.URL_KEY));
            if (url != null) {
                // escapeMECARD(url) -> wrong escape e.g. http\://zxing.google.com
                newContents.append("URL:").append(url).append(';');
                newDisplayContents.append('\n').append(url);
            }

            String note = trim(bundle.getString(Contents.NOTE_KEY));
            if (note != null) {
                newContents.append("NOTE:").append(escapeMECARD(note)).append(';');
                newDisplayContents.append('\n').append(note);
            }

            // Make sure we've encoded at least one field.
            if (newDisplayContents.length() > 0) {
                newContents.append(';');
                contents = newContents.toString();
                displayContents = newDisplayContents.toString();
                title = "Contact";
            } else {
                contents = null;
                displayContents = null;
            }

        }
    } else if (type.equals(Contents.Type.LOCATION)) {
        if (bundle != null) {
            // These must use Bundle.getFloat(), not getDouble(), it's part of the API.
            float latitude = bundle.getFloat("LAT", Float.MAX_VALUE);
            float longitude = bundle.getFloat("LONG", Float.MAX_VALUE);
            if (latitude != Float.MAX_VALUE && longitude != Float.MAX_VALUE) {
                contents = "geo:" + latitude + ',' + longitude;
                displayContents = latitude + "," + longitude;
                title = "Location";
            }
        }
    }
}

public Bitmap encodeAsBitmap() throws WriterException {
    if (!encoded) return null;

    Map<EncodeHintType, Object> hints = null;
    String encoding = guessAppropriateEncoding(contents);
    if (encoding != null) {
        hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
        hints.put(EncodeHintType.CHARACTER_SET, encoding);
    }
    MultiFormatWriter writer = new MultiFormatWriter();
    BitMatrix result = writer.encode(contents, format, dimension, dimension, hints);
    int width = result.getWidth();
    int height = result.getHeight();
    int[] pixels = new int[width * height];
    // All are 0, or black, by default
    for (int y = 0; y < height; y++) {
        int offset = y * width;
        for (int x = 0; x < width; x++) {
            pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
        }
    }

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}

private String guessAppropriateEncoding(CharSequence contents) {
    // Very crude at the moment
    for (int i = 0; i < contents.length(); i++) {
        if (contents.charAt(i) > 0xFF) { return "UTF-8"; }
    }
    return null;
}

private  String trim(String s) {
    if (s == null) { return null; }
    String result = s.trim();
    return result.length() == 0 ? null : result;
}

private String escapeMECARD(String input) {
    if (input == null || (input.indexOf(':') < 0 && input.indexOf(';') < 0)) { return input; }
    int length = input.length();
    StringBuilder result = new StringBuilder(length);
    for (int i = 0; i < length; i++) {
        char c = input.charAt(i);
        if (c == ':' || c == ';') {
            result.append('\\');
        }
        result.append(c);
    }
    return result.toString();
}

}





barcode