够懒了,又贴代码
public void button_f(View v) throws WriterException
{
Bitmap qrCodeBitmap;
qrCodeBitmap = Create2DCode("123");
qrCodeView.setImageBitmap(qrCodeBitmap);
System.out.println("122413");
}
/**
* 用字符串生成二维码
* @param str
* @author zhouzhe@lenovo-cw.com
* @return
* @throws WriterException
*/
public Bitmap Create2DCode(String str) throws WriterException {
//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, 300, 300);
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 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;
}
就这样生成了二维码,简单吧,当然,还要有个库才行
http://download.youkuaiyun.com/detail/ofaith12345/7342453