主要是用到了com.google.zxing jar包生成二维码的功能,这个jar包需要自己接下载
直接上代码
public static Bitmap CreateBinaryCodeImageByUrl(String url,Bitmap bottomImg,int drawAtPointX,int drawAtPointY,int binaryCodeImgWidth)
{
try{
Map<EncodeHintType, String> hints = new HashMap<EncodeHintType,String>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(url,BarcodeFormat.QR_CODE,binaryCodeImgWidth,binaryCodeImgWidth,hints);
int width = bottomImg.getWidth();
int height = bottomImg.getHeight();
Bitmap targetBmp = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); for (int posX = 0; posX < width; posX++ ){
for( int posY = 0; posY < height; posY++){
targetBmp.setPixel(posX, posY, bottomImg.getPixel(posX, posY));
}
} int limitWidth = drawAtPointX + binaryCodeImgWidth;
int limitHeight = drawAtPointY + binaryCodeImgWidth;
for ( int posX = drawAtPointX, matrixX = 0; posX < limitWidth; posX++,matrixX++){
for( int posY = drawAtPointY, matrixY=0; posY < limitHeight; posY++,matrixY++){
targetBmp.setPixel(posX, posY, bitMatrix.get(matrixX, matrixY)?0x000000FF:0xFFFFFFFF);
}
} return targetBmp;
}
catch(Exception e){return null;
}
}
参数说明:url 就是需要转换成二维码的图片,bottomImg 就是底图,drawAtPositionX 和 drawAtPositionY 表示二维码在地图上开始绘制的坐标点(底图左上角为坐标原点)
binaryCodeImgWidth 表示生成二维码的边长
放上两个bitmap 的生成方法
//截图后保存的图片地址
Bitmap screenshotImg = BitmapFactory.decodeFile(imagePath);
//直接从资源包中取图片
InputStream shareImgStream = instance.getResources().getAssets().open(“res/xx.png”);
BitMAP screenshotImg = BitmapFactory.decodeStream(shareImgStream);
效果如下
参考:
https://www.cnblogs.com/hongten/archive/2012/10/26/java_qrcode.html
http://www.cnblogs.com/mfrbuaa/p/5068162.html