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;

@Override

public 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api

bitmap.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 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 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 bitmap

Bitmap 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 into

cv.drawBitmap(src, 0, 0, null);// 在 0，0坐标开始画入src

// 在src的中间画watermark

cv.drawBitmap(watermark, w / 2 - ww / 2, h / 2 - wh / 2, null);// 设置ic_launcher的位置

// save all clip

cv.save(Canvas.ALL_SAVE_FLAG);// 保存

// store

cv.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 = 0.4f

float 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



/***

* 缩放图片并加描边

*

* @param src

* @param destWidth

* @param destHeigth

* @return

*/

private Bitmap zoomBitmapBorder(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 = 0.4f

float scaleWidth = ((float) destWidth - 4) / w;// 宽度缩小比例

float scaleHeight = ((float) destHeigth - 4) / 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

Bitmap newb = Bitmap.createBitmap(destWidth, destHeigth,

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);

//cv.drawColor(R.color.white);

cv.drawRGB(0,128,128);

cv.drawBitmap(resizedBitmap, 2, 2, null);// 设置ic_launcher的位置

// save all clip

cv.save(Canvas.ALL_SAVE_FLAG);// 保存

// store

cv.restore();// 存储

return getRoundedCornerBitmap(newb);

}

/**

* 图片圆角

* @param bitmap

* @return

*/

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {

Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),

bitmap.getHeight(), Config.ARGB_8888);

Canvas canvas = new Canvas(output);

final int color = 0xff424242;

final Paint paint = new Paint();

final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());

final RectF rectF = new RectF(rect);

final float roundPx = 12;

paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

paint.setColor(color);

canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

canvas.drawBitmap(bitmap, rect, rect, paint);

return output;

}