发布网友 发布时间:2022-03-25 16:34
共3个回答
热心网友 时间:2022-03-25 18:04
生成二维码,你可以用二维码生成软件,二维码生成软件支持多种二维码类型,生成之后,双击二维码,可以在图形属性中,自定义设置各项参数。如图所示:
热心网友 时间:2022-03-25 19:22
zxing 生成二维码
/*生成二维码*/
public static Bitmap createQRCode(String content, int w, int h, Bitmap logo) {
if (TextUtils.isEmpty(content)) {
return null;
}
/*偏移量*/
int offsetX = w / 2;
int offsetY = h / 2;
/*生成logo*/
Bitmap logoBitmap = null;
if (logo != null) {
Matrix matrix = new Matrix();
float scaleFactor = Math.min(w * 1.0f / 5 / logo.getWidth(), h * 1.0f / 5 / logo.getHeight());
matrix.postScale(scaleFactor, scaleFactor);
logoBitmap = Bitmap.createBitmap(logo, 0, 0, logo.getWidth(), logo.getHeight(), matrix, true);
}
/*如果log不为null,重新计算偏移量*/
int logoW = 0;
int logoH = 0;
if (logoBitmap != null) {
logoW = logoBitmap.getWidth();
logoH = logoBitmap.getHeight();
offsetX = (w - logoW) / 2;
offsetY = (h - logoH) / 2;
}
/*指定为UTF-8*/
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
//容错级别
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
//设置空白边距的宽度
hints.put(EncodeHintType.MARGIN, 0);
// 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 = null;
try {
matrix = new MultiFormatWriter().encode(content,
BarcodeFormat.QR_CODE, w, h, hints);
// 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[w * h];
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
if (x >= offsetX && x < offsetX + logoW && y >= offsetY && y < offsetY + logoH) {
int pixel = logoBitmap.getPixel(x - offsetX, y - offsetY);
if (pixel == 0) {
if (matrix.get(x, y)) {
pixel = 0xff000000;
} else {
pixel = 0xffffffff;
}
}
pixels[y * w + x] = pixel;
} else {
if (matrix.get(x, y)) {
pixels[y * w + x] = 0xff000000;
} else {
pixels[y * w + x] = 0xffffffff;
}
}
}
}
Bitmap bitmap = Bitmap.createBitmap(w, h,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, w, 0, 0, w, h);
return bitmap;
} catch (WriterException e) {
System.out.print(e);
return null;
}
}
热心网友 时间:2022-03-25 20:56
二维码的大小需要在生成的时候设置,具体百度一下