Google Zxing 只扫描二维码或者只扫描条形码

秒速五厘米 2022-08-05 12:15 298阅读 0赞

Google Zxing怎样实现扫描二维码、条形码，[具体参考我][Link 1]

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<DecodeHintType, Object> hints;
        private Handler handler;
        private final CountDownLatch handlerInitLatch;
    
        DecodeThread(MipcaActivityCapture activity, Vector<BarcodeFormat> decodeFormats, String characterSet,
    	    ResultPointCallback resultPointCallback)
        {
    
    	this.activity = activity;
    	handlerInitLatch = new CountDownLatch(1);
    
    	hints = new Hashtable<DecodeHintType, Object>;<pre name="code" class="java">      // 这里选择不同的模式，ONE_D_FORMATS是条形码、QR_CODE_FORMATS是二维码，<span style="font-family: Arial, Helvetica, sans-serif;">根据需要进行注释。</span>

if (decodeFormats == null || decodeFormats.isEmpty())
    	{
    	    decodeFormats = new Vector<BarcodeFormat>();
    	    decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
    	    // <span style="color:#ff0000;">decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);</span>
    	    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();
        }
    
    }

[Link 1]: http://blog.csdn.net/xiaanming/article/details/10163203