android直接从图片中对二维码编码解码

001 package com.google.zxing.client.android;

002

003 import java.util.Hashtable;

004

005 import android.app.Activity;

006 import android.graphics.Bitmap;

007 import android.graphics.drawable.BitmapDrawable;

008 import android.os.Bundle;

009 import android.util.Log;

010 import android.view.View;

011 import android.view.View.OnClickListener;

012 import android.widget.Button;

013 import android.widget.EditText;

014 import android.widget.ImageView;

015 import android.widget.TextView;

016

017 import com.google.zxing.BarcodeFormat;

018 import com.google.zxing.BinaryBitmap;

019 import com.google.zxing.ChecksumException;

020 import com.google.zxing.EncodeHintType;

021 import com.google.zxing.FormatException;

022 import com.google.zxing.NotFoundException;

023 import com.google.zxing.Result;

024 import com.google.zxing.WriterException;

025 import com.google.zxing.common.BitMatrix;

026 import com.google.zxing.common.HybridBinarizer;

027 import com.google.zxing.qrcode.QRCodeReader;

028 import com.google.zxing.qrcode.QRCodeWriter;

029 import com.test.RGBLuminanceSource;

030

031 public class TestActivity extends Activity {

032 private static final String TAG = "TestActivity";

033

034 String path;

035 private final static String pFormat = "png";

036

037

038

039 protected void onCreate(Bundle savedInstanceState) {

040 super.onCreate(savedInstanceState);

041 setContentView(R.layout.testactivity);

042 //set

043 Button btn2 = (Button)findViewById(R.id.Button03);

044 btn2.setOnClickListener(new OnClickListener() {

045

046 @Override

047 public void onClick(View view) {

048 ImageView imgView = (ImageView)findViewById(R.id.ImageView01);

049 QRCodeReader reader = new QRCodeReader();

050 int width = 200, height = 200;

051 QRCodeWriter writer = new QRCodeWriter();

052 try {

053 EditText edit = (EditText)findViewById(R.id.EditText01);

054 //edit.getText();

055 Log.i(TAG, "编辑框中的内容： " + edit.getText().toString());

056 // System.out.println(edit.getText().toString());

057 if(edit.getText().toString().length()<1)

058 {

059 return;

060 }

061

062 BitMatrix martix = writer.encode(edit.getText().toString(), BarcodeFormat.QR_CODE, width, height);

063 System.out.println("w:"+martix.width+"h:"+martix.height);

064 String imageFormat = "png";

065 Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();

066 hints.put(EncodeHintType.CHARACTER_SET, "utf-8");

067 BitMatrix bitMatrix = new QRCodeWriter().encode(edit.getText().toString(),BarcodeFormat.QR_CODE, width, height,hints);

068 int[] pixels = new int[width * height];

069 for (int y = 0; y < height; y++) {

070 for (int x = 0; x < width; x++) {

071 if(bitMatrix.get(x, y)){

072 pixels[y * width + x] = 0xff000000;

073 }else{

074 pixels[y * width + x] = 0xffffffff;

075 }

076

077 }

078 }

079

080 Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

081

082 bitmap.setPixels(pixels, 0, width, 0, 0, width, height);

083 imgView.setImageBitmap(bitmap);

084 // RGBLuminanceSource source = new RGBLuminanceSource(bitmap);

085 // LuminanceSource source = new RGBLuminanceSource(path);

086 // BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));

087 // QRCodeReader reader2= new QRCodeReader();

088 // Result result = reader2.decode(bitmap1);

089 // System.out.println("res"+result.getText());

090

091 } catch (WriterException e) {

092 // TODO Auto-generated catch block

093 e.printStackTrace();

094 }

095 }

096 });

097

098 Button btn1 = (Button)findViewById(R.id.Button01);

099 btn1.setOnClickListener(new OnClickListener() {

100

101 @Override

102 public void onClick(View v) {

103 // TODO Auto-generated method stub

104 ImageView imgView =(ImageView)findViewById(R.id.ImageView01);

105 Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();

106 hints.put(EncodeHintType.CHARACTER_SET, "utf-8");

107 Bitmap bitmap = ((BitmapDrawable)imgView.getDrawable()).getBitmap();

108 RGBLuminanceSource source = new RGBLuminanceSource(bitmap);

109 // LuminanceSource source = new RGBLuminanceSource(path);

110 BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));

111 QRCodeReader reader2= new QRCodeReader();

112 Result result;

113 try {

114 result = reader2.decode(bitmap1,hints);

115 System.out.println("res"+result.getText());

116 TextView text = (TextView)findViewById(R.id.TextView01);

117 text.setText(result.getText());

118 } catch (NotFoundException e) {

119 // TODO Auto-generated catch block

120 e.printStackTrace();

121 } catch (ChecksumException e) {

122 // TODO Auto-generated catch block

123 e.printStackTrace();

124 } catch (FormatException e) {

125 // TODO Auto-generated catch block

126 e.printStackTrace();

127 }

128 // System.out.println("res"+result.getText());

129 }

130 });

131 }

132 }

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