Read qr code from image java

// Imports
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.ChecksumException;
import com.google.zxing.FormatException;
import com.google.zxing.LuminanceSource;
import com.google.zxing.NotFoundException;
import com.google.zxing.RGBLuminanceSource;
import com.google.zxing.Reader;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.QRCodeReader;

// Interesting method
public static String decodeQRImage(String path) {
    Bitmap bMap = BitmapFactory.decodeFile(path);
    String decoded = null;

    int[] intArray = new int[bMap.getWidth() * bMap.getHeight()];
    bMap.getPixels(intArray, 0, bMap.getWidth(), 0, 0, bMap.getWidth(),
            bMap.getHeight());
    LuminanceSource source = new RGBLuminanceSource(bMap.getWidth(),
            bMap.getHeight(), intArray);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    Reader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap);
        decoded = result.getText();
    } catch (NotFoundException e) {
        e.printStackTrace();
    } catch (ChecksumException e) {
        e.printStackTrace();
    } catch (FormatException e) {
        e.printStackTrace();
    }
    return decoded;
}

Source: stackoverflow.com

Similar codes

0 vote106 views2 answers
Codegrepper java instanceof
Java
0 vote90 views1 answer
Groovy BASE64 Encode
Java
0 vote86 views1 answer
Set image programmatically android
Java
2 votes105 views1 answer
Charcodeat java
Java
16 votes97 views3 answers
Android java double to string
Java
0 vote97 views1 answer
Android get distance between two locations kotlin
Java
1 vote94 views1 answer
Java discord bot get id of message it just sent
Java
2 votes98 views1 answer
Android string java
Java
1 vote55 views1 answer
Java jpanel message error messages
Java
0 vote115 views1 answer
Failed to resolve org.junit.platform:junit-platform-launcher:1.7.0
Java