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

4 votes320 views1 answer
Long to int java 8
Java
1 vote285 views1 answer
How to get array index value into variable in java
Java
0 vote295 views1 answer
Java create an instance of a stack
Java
2 votes253 views1 answer
Error: java_home is not set and could not be found.
Java
1 vote315 views1 answer
Java send an image over a socket
Java
0 vote295 views1 answer
Jbutton border size java
Java
2 votes214 views1 answer
Draw oval parameters java
Java
0 vote290 views2 answers
How apache shiro remember me works
Java
0 vote289 views3 answers
Power of a number in java
Java
0 vote275 views1 answer
Java scanner tokens with withespace
Java