Google Zxing 只扫描二维码或者只扫描条形码

Google Zxing怎样实现扫描二维码、条形码，具体参考我

这里主要说一下，怎样选择不同的模式。

Zxing 默认支持扫描二维码、条形码两种功能，但是因为项目要求，禁止扫描二维码。那么怎样禁止扫描二维码呢？

修改源代码里面的DecodeThread.java文件即可。

注释掉decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS); 这句代码

源代码如下：

 

package com.jingu.app.zxing.decoding;

import java.util.Hashtable;
import java.util.Vector;
import java.util.concurrent.CountDownLatch;

import android.os.Handler;
import android.os.Looper;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.DecodeHintType;
import com.google.zxing.ResultPointCallback;
import com.jingu.app.main.activity.MipcaActivityCapture;

/**
 * This thread does all the heavy lifting of decoding the images. �����߳�
 */
final class DecodeThread extends Thread
{

    public static final String BARCODE_BITMAP = "barcode_bitmap";
    private final MipcaActivityCapture activity;
    private final Hashtable hints;
    private Handler handler;
    private final CountDownLatch handlerInitLatch;

    DecodeThread(MipcaActivityCapture activity, Vector decodeFormats, String characterSet,
	    ResultPointCallback resultPointCallback)
    {

	this.activity = activity;
	handlerInitLatch = new CountDownLatch(1);

	hints = new Hashtable;
      // 这里选择不同的模式，ONE_D_FORMATS是条形码、QR_CODE_FORMATS是二维码，根据需要进行注释。
 
	if (decodeFormats == null || decodeFormats.isEmpty())
	{
	    decodeFormats = new Vector();
	    decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
	    // decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
	    decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
	}

	hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);

	if (characterSet != null)
	{
	    hints.put(DecodeHintType.CHARACTER_SET, characterSet);
	}

	hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK, resultPointCallback);
    }

    Handler getHandler()
    {
	try
	{
	    handlerInitLatch.await();
	}
	catch (InterruptedException ie)
	{
	    // continue?
	}
	return handler;
    }

    @Override
    public void run()
    {
	Looper.prepare();
	handler = new DecodeHandler(activity, hints);
	handlerInitLatch.countDown();
	Looper.loop();
    }

}