Barcode/Qr Code Reader for Android [closed]

问题:

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Closed 2 years ago.

i would like to implement a QR Code/Barcode reader within my application. I would like to know what is the most lightweight solution to do this (disregarding intent integrator from zxing).

回答1:

I used zxing to build into my application. You will need a bit of coding. First include core.jar , its at core/core.jar,in your build path, then go to their client ,its at android/..../com.google.zxing, and get their code(This is not recommended by the devs, because your copy and pasting.) last, Add this code:

   package com.wtsang02.activities;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.ChecksumException;
import com.google.zxing.FormatException;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.Reader;
import com.google.zxing.Result;
import com.google.zxing.ResultPoint;
import com.google.zxing.common.HybridBinarizer;


public class QRDecoder extends Activity implements OnClickListener {

    private String text;
    private Button webbutton;
    private Bitmap bmp;
    private ImageView ivPicture;
    private TextView textv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mysales);
        webbutton = (Button)findViewById(R.id.webbutton);

        ivPicture = (ImageView) findViewById(R.id.ivPicture);
        textv= (TextView) findViewById(R.id.mytext);

        webbutton.setOnClickListener(this);
    }

    private void decode() {


        if (bmp == null) {
            Log.i("tag", "wtf");
        }
        bmp = bmp.copy(Bitmap.Config.ARGB_8888, true);

        int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
        bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(),
                bmp.getHeight());

        LuminanceSource source = new com.google.zxing.RGBLuminanceSource(
                bmp.getWidth(), bmp.getHeight(), intArray);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Reader reader = new MultiFormatReader();
        try {
            Result result = reader.decode(bitmap);

            text = result.getText();
            byte[] rawBytes = result.getRawBytes();
            BarcodeFormat format = result.getBarcodeFormat();
            ResultPoint[] points = result.getResultPoints();
            textv.setText(text);

        } catch (NotFoundException e) {

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

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

            e.printStackTrace();

        }
        Log.i("done", "done");
        if(text!=null)
        Toast.makeText(getBaseContext(), text, Toast.LENGTH_LONG).show();
        else{
            Toast.makeText(getBaseContext(), "QQ", Toast.LENGTH_LONG).show();
        }
    }

    @Override
    public void onClick(View v) {

        Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(i, 0);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            Bundle extras = data.getExtras();
            bmp = (Bitmap) extras.get("data");
            ivPicture.setImageBitmap(bmp);
            decode();
        }

    }

}

This code will use your phone's default camera, if you need to use their client, you will need to start their CaptureActivity, Your layout should include a TextView to show results, ImageView to show the image you captured, and Button to start the camera. . This is based off of 2.1zxing.

回答2:

You can use:

• zbar (SDK has a good example).
• zxing

回答3:

Hey download a sample of Biggu Barcode Scanner from this link, extract the Demo Project and import it to eclipse. The zip file has Demo Example, which you can use and integrate in your app as per your requirement