android直接从图片中对二维码编码解码

001

package

com.google.zxing.client.android;

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003

import

java.util.Hashtable;

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005

import

android.app.Activity;

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import

android.graphics.Bitmap;

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import

android.graphics.drawable.BitmapDrawable;

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import

android.os.Bundle;

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import

android.util.Log;

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import

android.view.View;

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import

android.view.View.OnClickListener;

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import

android.widget.Button;

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import

android.widget.EditText;

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import

android.widget.ImageView;

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import

android.widget.TextView;

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import

com.google.zxing.BarcodeFormat;

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import

com.google.zxing.BinaryBitmap;

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import

com.google.zxing.ChecksumException;

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import

com.google.zxing.EncodeHintType;

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import

com.google.zxing.FormatException;

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import

com.google.zxing.NotFoundException;

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import

com.google.zxing.Result;

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import

com.google.zxing.WriterException;

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import

com.google.zxing.common.BitMatrix;

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import

com.google.zxing.common.HybridBinarizer;

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import

com.google.zxing.qrcode.QRCodeReader;

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import

com.google.zxing.qrcode.QRCodeWriter;

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import

com.test.RGBLuminanceSource;

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public

class

TestActivity

extends

Activity{

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private

static

final

StringTAG=

"TestActivity"

;

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Stringpath;

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private

final

static

StringpFormat=

"png"

;

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037

038

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protected

void

onCreate(BundlesavedInstanceState){

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super

.onCreate(savedInstanceState);

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setContentView(R.layout.testactivity);

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//set

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Buttonbtn2=(Button)findViewById(R.id.Button03);

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btn2.setOnClickListener(

new

OnClickListener(){

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@Override

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public

void

onClick(Viewview){

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ImageViewimgView=(ImageView)findViewById(R.id.ImageView01);

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QRCodeReaderreader=

new

QRCodeReader();

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int

width=

200

,height=

200

;

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QRCodeWriterwriter=

new

QRCodeWriter();

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try

{

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EditTextedit=(EditText)findViewById(R.id.EditText01);

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//edit.getText();

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Log.i(TAG,

"编辑框中的内容："

+edit.getText().toString());

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

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if

(edit.getText().toString().length()<

1

)

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{

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return

;

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}

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BitMatrixmartix=writer.encode(edit.getText().toString(),BarcodeFormat.QR_CODE,width,height);

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System.out.println(

"w:"

+martix.width+

"h:"

+martix.height);

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StringimageFormat=

"png"

;

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Hashtable<EncodeHintType,String>hints=

new

Hashtable<EncodeHintType,String>();

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hints.put(EncodeHintType.CHARACTER_SET,

"utf-8"

);

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BitMatrixbitMatrix=

new

QRCodeWriter().encode(edit.getText().toString(),BarcodeFormat.QR_CODE,width,height,hints);

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int

[]pixels=

new

int

[width*height];

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for

(

int

y=

0

;y<height;y++){

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for

(

int

x=

0

;x<width;x++){

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if

(bitMatrix.get(x,y)){

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pixels[y*width+x]=

0xff000000

;

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}

else

{

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pixels[y*width+x]=

0xffffffff

;

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}

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077

}

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}

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

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bitmap.setPixels(pixels,

0

,width,

0

,

0

,width,height);

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imgView.setImageBitmap(bitmap);

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//RGBLuminanceSourcesource=newRGBLuminanceSource(bitmap);

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//LuminanceSourcesource=newRGBLuminanceSource(path);

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//BinaryBitmapbitmap1=newBinaryBitmap(newHybridBinarizer(source));

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//QRCodeReaderreader2=newQRCodeReader();

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//Resultresult=reader2.decode(bitmap1);

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

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}

catch

(WriterExceptione){

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//TODOAuto-generatedcatchblock

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e.printStackTrace();

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}

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}

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});

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Buttonbtn1=(Button)findViewById(R.id.Button01);

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btn1.setOnClickListener(

new

OnClickListener(){

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@Override

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public

void

onClick(Viewv){

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//TODOAuto-generatedmethodstub

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ImageViewimgView=(ImageView)findViewById(R.id.ImageView01);

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Hashtable<EncodeHintType,String>hints=

new

Hashtable<EncodeHintType,String>();

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hints.put(EncodeHintType.CHARACTER_SET,

"utf-8"

);

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Bitmapbitmap=((BitmapDrawable)imgView.getDrawable()).getBitmap();

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RGBLuminanceSourcesource=

new

RGBLuminanceSource(bitmap);

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//LuminanceSourcesource=newRGBLuminanceSource(path);

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BinaryBitmapbitmap1=

new

BinaryBitmap(

new

HybridBinarizer(source));

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QRCodeReaderreader2=

new

QRCodeReader();

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Resultresult;

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try

{

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result=reader2.decode(bitmap1,hints);

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System.out.println(

"res"

+result.getText());

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TextViewtext=(TextView)findViewById(R.id.TextView01);

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text.setText(result.getText());

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}

catch

(NotFoundExceptione){

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//TODOAuto-generatedcatchblock

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e.printStackTrace();

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}

catch

(ChecksumExceptione){

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//TODOAuto-generatedcatchblock

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e.printStackTrace();

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}

catch

(FormatExceptione){

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//TODOAuto-generatedcatchblock

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e.printStackTrace();

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}

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

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}

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});

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}

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}