我自己写的实验程序，里面包含有Zxing-2.0的core.jar文件就在libs文件夹内，需要的朋友可以到这来下载点击打开链接

2.解压出来后有很多例子文件，有各个平台的如：Android，IOS等。在文件中你会发现一个core文件夹里面有一个core.jar的文件，这个就是用来引入到工程的库文件。

3.下面是我自己写的类

package com.example.testzxing;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.PointF;

import android.graphics.Bitmap.Config;

import android.view.Gravity;

import android.view.View.MeasureSpec;

import android.view.ViewGroup.LayoutParams;

import android.widget.LinearLayout;

import android.widget.TextView;

import com.google.zxing.BarcodeFormat;

import com.google.zxing.MultiFormatWriter;

import com.google.zxing.WriterException;

import com.google.zxing.common.BitMatrix;

public abstract class BarcodeCreater {

/**

* 图片两端所保留的空白的宽度

*/

private static int marginW=20;

/**

* 条形码的编码类型

*/

private static BarcodeFormat barcodeFormat= BarcodeFormat.CODE_128;

/**

* 生成条形码

* @param context

* @param contents 需要生成的内容

* @param desiredWidth 生成条形码的宽带

* @param desiredHeight 生成条形码的高度

* @param displayCode 是否在条形码下方显示内容

* @return

*/

public static Bitmap creatBarcode(Context context,String contents ,

int desiredWidth,int desiredHeight,boolean displayCode){

Bitmap ruseltBitmap=null;

if (displayCode) {

Bitmap barcodeBitmap=encodeAsBitmap(contents, barcodeFormat, desiredWidth, desiredHeight);

Bitmap codeBitmap=creatCodeBitmap(contents, desiredWidth+2*marginW, desiredHeight, context);

ruseltBitmap=mixtureBitmap(barcodeBitmap, codeBitmap, new PointF(0, desiredHeight));

} else {

ruseltBitmap=encodeAsBitmap(contents,barcodeFormat, desiredWidth, desiredHeight);

}

return ruseltBitmap;

}

/**

* 生成显示编码的Bitmap

* @param contents

* @param width

* @param height

* @param context

* @return

*/

protected static Bitmap creatCodeBitmap(String contents,int width,int height,Context context) {

TextView tv=new TextView(context);

LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);

tv.setLayoutParams(layoutParams);

tv.setText(contents);

tv.setHeight(height);

tv.setGravity(Gravity.CENTER_HORIZONTAL);

tv.setWidth(width);

tv.setDrawingCacheEnabled(true);

tv.setTextColor(Color.BLACK);

tv.measure(

MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),

MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

tv.layout(0, 0, tv.getMeasuredWidth(),

tv.getMeasuredHeight());

tv.buildDrawingCache();

Bitmap bitmapCode=tv.getDrawingCache();

return bitmapCode;

}

/**

* 生成条形码的Bitmap

* @param contents 需要生成的内容

* @param format 编码格式

* @param desiredWidth

* @param desiredHeight

* @return

* @throws WriterException

*/

protected static Bitmap encodeAsBitmap(String contents, BarcodeFormat format,

int desiredWidth, int desiredHeight){

final int WHITE = 0xFFFFFFFF;

final int BLACK = 0xFF000000;

MultiFormatWriter writer = new MultiFormatWriter();

BitMatrix result=null;

try {

result = writer.encode(contents, format, desiredWidth,

desiredHeight, null);

} catch (WriterException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

int width = result.getWidth();

int height = result.getHeight();

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

// All are 0, or black, by default

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

int offset = y * width;

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

pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;

}

}

Bitmap bitmap = Bitmap.createBitmap(width, height,

Bitmap.Config.ARGB_8888);

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

return bitmap;

}

/**

* 将两个Bitmap合并成一个

* @param first

* @param second

* @param fromPoint 第二个Bitmap开始绘制的起始位置(相对于第一个Bitmap)

* @return

*/

protected static Bitmap mixtureBitmap(Bitmap first, Bitmap second,PointF fromPoint) {

if (first == null || second == null || fromPoint == null) {

return null;

}

Bitmap newBitmap = Bitmap.createBitmap(first.getWidth()+second.getWidth()+marginW, first.getHeight()+second.getHeight()

, Config.ARGB_4444);

Canvas cv = new Canvas(newBitmap);

cv.drawBitmap(first,marginW,0,null);

cv.drawBitmap(second, fromPoint.x, fromPoint.y, null);

cv.save(Canvas.ALL_SAVE_FLAG);

cv.restore();

return newBitmap;

}

}