/***   生成条形码和二维码的工具*/
public class ZXingUtils {/*** 生成二维码 要转换的地址或字符串,可以是中文** @param url* @param width* @param height* @return*/public static Bitmap createQRImage(String url, final int width, final int height) {try {// 判断URL合法性if (url == null || "".equals(url) || url.length() < 1) {return null;}Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();hints.put(EncodeHintType.CHARACTER_SET, "utf-8");//容错率//L 7,M 15,Q 25,H 30.hints.put(EncodeHintType.ERROR_CORRECTION, "H");//边距 0最小 1   2最大hints.put(EncodeHintType.MARGIN, "1");// 图像数据转换，使用了矩阵转换BitMatrix bitMatrix = new QRCodeWriter().encode(url,BarcodeFormat.QR_CODE, width, height, hints);int[] pixels = new int[width * height];// 下面这里按照二维码的算法，逐个生成二维码的图片，// 两个for循环是图片横列扫描的结果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;}}}// 生成二维码图片的格式，使用ARGB_8888Bitmap bitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);bitmap.setPixels(pixels, 0, width, 0, 0, width, height);return bitmap;} catch (WriterException e) {e.printStackTrace();}return null;}/*** 用于向创建的二维码中添加一个logo* @param bm_QR* @param bm_logo* @return*/public static Bitmap addLogo(Bitmap bm_QR, Bitmap bm_logo) {if (bm_QR == null) {return null;}if (bm_logo == null) {return bm_QR ;}//获取图片的宽高int bm_QR_Width = bm_QR.getWidth() ;int bm_QR_Height = bm_QR.getHeight();int bm_logo_Width = bm_logo.getWidth() ;int bm_logo_Height = bm_logo.getHeight();//设置log0的大小为二维码整体大小的1/4float scale_logo = bm_QR_Width*1.0f /4/bm_logo_Width ;Bitmap bitmap = Bitmap.createBitmap(bm_QR_Width, bm_QR_Height, Bitmap.Config.ARGB_8888);try {Canvas canvas = new Canvas(bitmap);canvas.drawBitmap(bm_QR, 0, 0, null);canvas.scale(scale_logo, scale_logo, bm_QR_Width / 2, bm_QR_Height / 2);canvas.drawBitmap(bm_logo, (bm_QR_Width - bm_logo_Width) / 2, (bm_QR_Height - bm_logo_Height) / 2, null);canvas.save();canvas.restore();} catch (Exception e) {bitmap = null;e.getStackTrace();}return bitmap;}/*** 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;/*** 图片两端所保留的空白的宽度*/int marginW = 20;/*** 条形码的编码类型*/BarcodeFormat barcodeFormat = BarcodeFormat.CODE_128;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 blocke.printStackTrace();}int width = result.getWidth();int height = result.getHeight();int[] pixels = new int[width * height];// All are 0, or black, by defaultfor (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;}/*** 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);ActionBar.LayoutParams layoutParams = new ActionBar.LayoutParams(ActionBar.LayoutParams.MATCH_PARENT, ActionBar.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(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));tv.layout(0, 0, tv.getMeasuredWidth(), tv.getMeasuredHeight());tv.buildDrawingCache();Bitmap bitmapCode = tv.getDrawingCache();return bitmapCode;}/*** 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;}int marginW = 20;Bitmap newBitmap = Bitmap.createBitmap(first.getWidth() + second.getWidth() + marginW,first.getHeight() + second.getHeight(), Bitmap.Config.ARGB_4444);Canvas cv = new Canvas(newBitmap);cv.drawBitmap(first, marginW, 0, null);cv.drawBitmap(second, fromPoint.x, fromPoint.y, null);cv.save();cv.restore();return newBitmap;}}