Zxing二维码解析——图文转换

一：文字转化为二维码图片。

package com.xhm.tool;

import java.util.Hashtable;

import android.graphics.Bitmap;

import android.text.TextUtils;

import com.google.zxing.BarcodeFormat;

import com.google.zxing.EncodeHintType;

import com.google.zxing.WriterException;

import com.google.zxing.common.BitMatrix;

import com.google.zxing.qrcode.QRCodeWriter;

public class TextToBitmap {

    // 要生成的文字

    private String text;

    // 生成图片的大小

    private int QR_WIDTH, QR_HEIGHT;

    public TextToBitmap(String text, int QR_WIDTH, int QR_HEIGHT) {

        this.text = text;

        this.QR_HEIGHT = QR_HEIGHT;

        this.QR_WIDTH = QR_WIDTH;

    }

    public Bitmap getBitmap() {

        try {

            // 判断文字是否为空

            if (TextUtils.isEmpty(text)) {

                return null;

            }

            // 设置二维码属性，如编码格式，大小，颜色等

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

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

            BitMatrix bitMatrix = new QRCodeWriter().encode(text,

                    BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);

            int[] pixels = new int[QR_WIDTH * QR_HEIGHT];

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

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

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

                        pixels[y * QR_WIDTH + x] = 0xff000000;

                    } else {

                        pixels[y * QR_WIDTH + x] = 0xffffffff;

                    }

                }

            }

            // 建立一个bitmap图片，用来接受二维码的颜色。

            Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,

                    Bitmap.Config.ARGB_8888);

            bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);

            return bitmap;

        } catch (WriterException e) {

            e.printStackTrace();

            return null;

        }

    }

}

二：图片转换为文字：

package com.xhm.tool;

import java.util.Hashtable;

import android.graphics.Bitmap;

import com.google.zxing.BinaryBitmap;

import com.google.zxing.ChecksumException;

import com.google.zxing.DecodeHintType;

import com.google.zxing.FormatException;

import com.google.zxing.NotFoundException;

import com.google.zxing.Result;

import com.google.zxing.common.HybridBinarizer;

import com.google.zxing.qrcode.QRCodeReader;

public class BitmapToText {

    // 要读取的二维码图片

    private Bitmap bitmap;

    public BitmapToText(Bitmap bitmap) {

        this.bitmap = bitmap;

    }

    // 获得文字

    public String getText() {

        int mWidth, mHeight;

        String value = null;

        Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();

        // 设置解析编码

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

        mWidth = bitmap.getWidth();

        mHeight = bitmap.getHeight();

        int[] pixels = new int[mWidth * mHeight];

        bitmap.getPixels(pixels, 0, mWidth, 0, 0, mWidth, mHeight);

        RGBLuminanceSource source = new RGBLuminanceSource(mWidth, mHeight,

                pixels);

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

        QRCodeReader reader2 = new QRCodeReader();

        Result result = null;

        try {

            result = reader2.decode(bitmap1, hints);

            value = 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();

        }

        return value;

    }

}

三：调用代码

获得imageview中的图片

ImageView image = (ImageView) view[1];

// 缓存图片，方便后边调用

image.setDrawingCacheEnabled(true);

ImageView image = (ImageView) view[1];
  // 获得缓存的图片
  btt = new BitmapToText(image.getDrawingCache(true));

JAR包下载地址：http://download.csdn.net/detail/as294985925/5685213

源码下载地址：http://download.csdn.net/detail/as294985925/5685321