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 vote218 views1 answer
Executors java
Java
0 vote198 views1 answer
Java check if a line is enclosed in quotation marks
Java
0 vote182 views3 answers
Char to charsequence in java
Java
0 vote201 views1 answer
Jax-RS PUT annotation
Java
-2 votes149 views1 answer
Print string with special characters java
Java
26 votes329 views2 answers
Java random numbers in specific range
Java
0 vote186 views1 answer
Java jpanel popup message
Java
0 vote206 views1 answer
["org.elasticsearch.bootstrap.startupexception: java.lang.illegalstateexception: failed to obtain node locks,
Java
0 vote251 views1 answer
How to initialize a string in java
Java
0 vote187 views1 answer
Java sql query with parameters
Java