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About the problem of Chinese garbled characters when using ZXing to scan QR codes

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Posted on 3/8/2015 11:36:08 PM | | |
The function of the recent project requires the use of scanning QR codes. I refer to Google's open source project ZXing: After the function is completed: I found that there was no problem in scanning the barcode: But when scanning the QR code, some of them are garbled: Or not a Chinese question: I referred to a lot of information on the Internet. But the effect is still not ideal: Later, it was found that as long as it is encoded in the format of ISO-8859-1, the result is taken out and then converted accordingly: The problem is solved. You don't need to modify the source code: here's how to do it

First: First set its default encoding in the CaptureActivity class


  1. decodeFormats = null;
  2. characterSet = "ISO-8859-1";
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Second: You convert the corresponding encoding in the activity that retrieves the result. Here I am working on it in the ResultActivity class


  1. public class ResultActivity extends Activity implements OnClickListener{

  3.         private TextView dec_result;
  4.         private String resultStr;
  5.         private ImageView codeImage;
  6.         private Button returnChoujiang,returnJubao;
  7.         @Override
  8.         protected void onCreate(Bundle savedInstanceState) {
  9.                 // TODO Auto-generated method stub
  10.                 super.onCreate(savedInstanceState);
  11.                 setContentView(R.layout.dec_result);
  12.                 init();
  13.                 dec_result=(TextView)findViewById(R.id.dec_result);
  14.                 codeImage=(ImageView)findViewById(R.id.code_image);
  15.                 Intent intent=getIntent();
  16.                 resultStr=intent.getStringExtra("result");
  17.                 String UTF_Str="";
  18.                 String GB_Str="";
  19.                 boolean is_cN=false;
  20.                 try {
  21.                         System.out.println("------------"+resultStr);
  22.                         UTF_Str=new String(resultStr.getBytes("ISO-8859-1"),"UTF-8");
  23.                         System.out.println("这是转了UTF-8的"+UTF_Str);
  24.                         is_cN=IsChineseOrNot.isChineseCharacter(UTF_Str);
  25.                         //防止有人特意使用乱码来生成二维码来判断的情况
  26.                         boolean b=IsChineseOrNot.isSpecialCharacter(resultStr);
  27.                         if(b){
  28.                                 is_cN=true;
  29.                         }
  30.                         System.out.println("是为:"+is_cN);
  31.                         if(!is_cN){
  32.                                 GB_Str=new String(resultStr.getBytes("ISO-8859-1"),"GB2312");
  33.                                 System.out.println("这是转了GB2312的"+GB_Str);
  34.                         }
  35.                 } catch (UnsupportedEncodingException e) {
  36.                         // TODO Auto-generated catch block
  37.                         e.printStackTrace();
  38.                 }
  39.                
  40.                
  41.                 Bitmap bm=intent.getParcelableExtra("IMG_return");
  42.                 if(is_cN){
  43.                         dec_result.setText(UTF_Str);
  44.                 }else{
  45.                         dec_result.setText(GB_Str);
  46.                 }
  47.                 codeImage.setImageBitmap(bm);
  48.                
  49.                 returnChoujiang.setOnClickListener(this);
  50.                 returnJubao.setOnClickListener(this);
  51.         }
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Third: The following is to judge whether it is in Unicode encoding


  1. public class IsChineseOrNot {
  2.        
  3.     public static final boolean isChineseCharacter(String chineseStr) {  
  4.         char[] charArray = chineseStr.toCharArray();  
  5.         for (int i = 0; i < charArray.length; i++) {         
  6.                 //是否是Unicode编码,除了"&#65533;"这个字符.这个字符要另外处理
  7.             if ((charArray[i] >= '\u0000' && charArray[i] < '\uFFFD')||((charArray[i] > '\uFFFD' && charArray[i] < '\uFFFF'))) {  
  8.                 continue;
  9.             }
  10.             else{
  11.                     return false;
  12.             }
  13.         }  
  14.         return true;  
  15.     }  
  16.    
  17.     public static final boolean isSpecialCharacter(String str){
  18.             //是"&#65533;"这个特殊字符的乱码情况
  19.             if(str.contains("&#239;&#191;&#189;")){
  20.                     return true;
  21.             }
  22.             return false;
  23.     }
  24. }
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Finally, this solves the Chinese garbled problem of ZXing




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