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

11 votes329 views2 answers
Converting temperature from fahrenheit to celsius
Java
1 vote354 views3 answers
Javafx textarea font size
Java
0 vote365 views1 answer
Candies price hackerearth solution in java
Java
0 vote337 views3 answers
Cant change button color when app run android studio
Java
0 vote366 views2 answers
Open camera in android
Java
1 vote377 views1 answer
Jbutton set background transparent
Java
0 vote367 views1 answer
Android how to get position of a row in listview
Java
0 vote355 views1 answer
What is a point class in java?
Java
4 votes365 views1 answer
How to check if recyclerview is empty
Java
8 votes362 views2 answers
Check if char is number java
Java