仿微信二维码生成以及条形码生成
package your.QRCode.namespace;import java.io.File;import java.io.FileOutputStream;import java.util.HashMap;import java.util.Map;import com.google.zxing.BarcodeFormat;import com.google.zxing.EncodeHintType;import com.google.zxing.MultiFormatWriter;import com.google.zxing.WriterException;import com.google.zxing.common.BitMatrix;import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;import android.app.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Matrix;import android.graphics.PointF;import android.graphics.Rect;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.os.Environment;import android.util.Log;import android.view.Gravity;import android.view.View;import android.view.View.MeasureSpec;import android.view.ViewGroup.LayoutParams;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;public class QRCodeTextActivityActivity extends Activity {/** Called when the activity is first created. */Button btn1 = null;Button btn2 = null;ImageView ivImageView = null;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);btn1 = (Button) findViewById(R.id.button1);// 条形码btn2 = (Button) findViewById(R.id.button2);// 二维码ivImageView = (ImageView) findViewById(R.id.imageView1);final String strconteString = "c2b0f58a6f09cafd1503c06ef08ac7aeb7ddb91a602dac145551c102143e6159e385cdc294";btn1.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {Bitmap mBitmap = null;mBitmap = creatBarcode(QRCodeTextActivityActivity.this,strconteString, 300, 300, true);if (mBitmap != null) {ivImageView.setImageBitmap(mBitmap);}}});btn2.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {Bitmap mBitmap = null;try {if (!strconteString.equals("")) {mBitmap = Create2DCode(strconteString);// Bitmap bm =// BitmapFactory.decodeResource(getResources(),// R.drawable.diagnose1);ivImageView.setImageBitmap(createBitmap(mBitmap,zoomBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.cccc), 100,100)));}} catch (Exception e) {e.printStackTrace();}}});}public Bitmap Create2DCode(String str) throws WriterException {Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);hints.put(EncodeHintType.CHARACTER_SET, "GBK");// hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");// 生成二维矩阵,编码时指定大小,不要生成了图片以后再进行缩放,这样会模糊导致识别失败BitMatrix matrix = new MultiFormatWriter().encode(str,BarcodeFormat.QR_CODE, 500, 500, hints);int width = matrix.getWidth();int height = matrix.getHeight();// 二维矩阵转为一维像素数组,也就是一直横着排了int[] pixels = new int[width * height];for (int i = 0; i < pixels.length; i++) {pixels[i] = 0xffffffff;}for (int y = 0; y < height; y++) {for (int x = 0; x < width; x++) {if (matrix.get(x, y)) {pixels[y * width + x] = 0xff000000;}}}Bitmap bitmap = Bitmap.createBitmap(width, height,Bitmap.Config.ARGB_8888);// 通过像素数组生成bitmap,具体参考apibitmap.setPixels(pixels, 0, width, 0, 0, width, height);return bitmap;}public File GetCodePath(String name) {String EXTERN_PATH = null;if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED) == true) {EXTERN_PATH = android.os.Environment.getExternalStorageDirectory().getAbsolutePath() + "/";File f = new File(EXTERN_PATH);if (!f.exists()) {f.mkdirs();}}return new File(EXTERN_PATH + name);}/** * 图片两端所保留的空白的宽度 */private int marginW = 20;/** * 条形码的编码类型 */private 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 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 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 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;}/** * 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 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;}/*** 仿微信二维码开始 ***/// 图片剪切public Bitmap cutBitmap(Bitmap mBitmap, Rect r, Bitmap.Config config) {int width = r.width();int height = r.height();Bitmap croppedImage = Bitmap.createBitmap(width, height, config);Canvas cvs = new Canvas(croppedImage);Rect dr = new Rect(0, 0, width, height);cvs.drawBitmap(mBitmap, r, dr, null);return croppedImage;}/*** * 合并图片 * * @param src * @param watermark * @return */private Bitmap createBitmap(Bitmap src, Bitmap watermark) {String tag = "createBitmap";Log.d(tag, "create a new bitmap");if (src == null) {return null;}int w = src.getWidth();int h = src.getHeight();int ww = watermark.getWidth();int wh = watermark.getHeight();// create the new blank bitmapBitmap newb = Bitmap.createBitmap(w, h, Config.ARGB_8888);// 创建一个新的和SRC长度宽度一样的位图Canvas cv = new Canvas(newb);// draw src intocv.drawBitmap(src, 0, 0, null);// 在 0，0坐标开始画入src// 在src的中间画watermarkcv.drawBitmap(watermark, w / 2 - ww / 2, h / 2 - wh / 2, null);// 设置ic_launcher的位置// save all clipcv.save(Canvas.ALL_SAVE_FLAG);// 保存// storecv.restore();// 存储return newb;}/*** * 缩放图片 * * @param src * @param destWidth * @param destHeigth * @return */private Bitmap zoomBitmap(Bitmap src, int destWidth, int destHeigth) {String tag = "lessenBitmap";if (src == null) {return null;}int w = src.getWidth();// 源文件的大小int h = src.getHeight();// calculate the scale - in this case = 0.4ffloat scaleWidth = ((float) destWidth) / w;// 宽度缩小比例float scaleHeight = ((float) destHeigth) / h;// 高度缩小比例Log.d(tag, "bitmap width is :" + w);Log.d(tag, "bitmap height is :" + h);Log.d(tag, "new width is :" + destWidth);Log.d(tag, "new height is :" + destHeigth);Log.d(tag, "scale width is :" + scaleWidth);Log.d(tag, "scale height is :" + scaleHeight);Matrix m = new Matrix();// 矩阵m.postScale(scaleWidth, scaleHeight);// 设置矩阵比例Bitmap resizedBitmap = Bitmap.createBitmap(src, 0, 0, w, h, m, true);// 直接按照矩阵的比例把源文件画入进行return resizedBitmap;}}<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="#ffffff"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Button android:id="@+id/button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="条形码" /> <Button android:id="@+id/button2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="二维码" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" > <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:scaleType="fitXY" android:src="@drawable/ic_launcher" /> </RelativeLayout></LinearLayout>
图片美工做下处理。貌似需要做一个描边。png透明背景
源码:
http://download.csdn.net/download/fuweiping/4690213
