android直接从图片中对二维码编码解码，,基于zxingpacka

android直接从图片中对二维码编码解码，,基于zxingpacka

基于zxing

package com.google.zxing.client.android;import java.util.Hashtable;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.ImageView;import android.widget.TextView;import com.google.zxing.BarcodeFormat;import com.google.zxing.BinaryBitmap;import com.google.zxing.ChecksumException;import com.google.zxing.EncodeHintType;import com.google.zxing.FormatException;import com.google.zxing.NotFoundException;import com.google.zxing.Result;import com.google.zxing.WriterException;import com.google.zxing.common.BitMatrix;import com.google.zxing.common.HybridBinarizer;import com.google.zxing.qrcode.QRCodeReader;import com.google.zxing.qrcode.QRCodeWriter;import com.test.RGBLuminanceSource;public class TestActivity extends Activity {    private static final String TAG = "TestActivity";    String path;    private final static String pFormat = "png";    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.testactivity);        //set        Button btn2 = (Button)findViewById(R.id.Button03);        btn2.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View view) {                ImageView imgView = (ImageView)findViewById(R.id.ImageView01);                QRCodeReader reader = new QRCodeReader();                 int width = 200, height = 200;                  QRCodeWriter writer = new QRCodeWriter();                try {                    EditText edit = (EditText)findViewById(R.id.EditText01);                    //edit.getText();                    Log.i(TAG, "编辑框中的内容： " + edit.getText().toString());//                  System.out.println(edit.getText().toString());                    if(edit.getText().toString().length()<1)                    {                        return;                    }                    BitMatrix martix = writer.encode(edit.getText().toString(), BarcodeFormat.QR_CODE, width, height);                    System.out.println("w:"+martix.width+"h:"+martix.height);                     String imageFormat = "png";                     Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();                    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");                BitMatrix bitMatrix = new QRCodeWriter().encode(edit.getText().toString(),BarcodeFormat.QR_CODE, width, height,hints);                     int[] pixels = new int[width * height];                         for (int y = 0; y < height; y++) {                             for (int x = 0; x < width; x++) {                                 if(bitMatrix.get(x, y)){                                     pixels[y * width + x] = 0xff000000;                                 }else{                                 pixels[y * width + x] = 0xffffffff;                             }                             }                         }                         Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);                         bitmap.setPixels(pixels, 0, width, 0, 0, width, height);                     imgView.setImageBitmap(bitmap);//                   RGBLuminanceSource source = new RGBLuminanceSource(bitmap);//                  LuminanceSource source = new RGBLuminanceSource(path);  //                  BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));  //                   QRCodeReader reader2= new QRCodeReader();//                   Result result = reader2.decode(bitmap1);//                   System.out.println("res"+result.getText());                } catch (WriterException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        });        Button btn1 = (Button)findViewById(R.id.Button01);        btn1.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                // TODO Auto-generated method stub                ImageView imgView =(ImageView)findViewById(R.id.ImageView01);                Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();                hints.put(EncodeHintType.CHARACTER_SET, "utf-8");                Bitmap bitmap = ((BitmapDrawable)imgView.getDrawable()).getBitmap();                RGBLuminanceSource source = new RGBLuminanceSource(bitmap);//                  LuminanceSource source = new RGBLuminanceSource(path);                      BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));                       QRCodeReader reader2= new QRCodeReader();                     Result result;                   try {                     result = reader2.decode(bitmap1,hints);                     System.out.println("res"+result.getText());                     TextView text  = (TextView)findViewById(R.id.TextView01);                    text.setText(result.getText());                    } catch (NotFoundException e) {                        // TODO Auto-generated catch block                        e.printStackTrace();                    } catch (ChecksumException e) {                        // TODO Auto-generated catch block                        e.printStackTrace();                    } catch (FormatException e) {                        // TODO Auto-generated catch block                        e.printStackTrace();                    }                    // System.out.println("res"+result.getText());            }        });    }}//该片段来自于http://byrx.net