public static Bitmap cretaeBitmap(Context c, String str, Bitmap mBitmap) 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
int qr_width = ScreenUtils.getScreenWidth(c) * 2 / 3;
int qr_height = qr_width;
BitMatrix matrix =
new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, qr_width, qr_height);
// BitMatrix matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, 300,
// 300);//如果要指定二维码的边框以及容错率，最好给encode方法增加一个参数：hints 一个Hashmap
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 halfW = width / 2;
int halfH = height / 2;
int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
if (x > halfW - Const.IMAGE_HALFWIDTH
&& x < halfW + Const.IMAGE_HALFWIDTH
&& y > halfH - Const.IMAGE_HALFWIDTH
&& y < halfH + Const.IMAGE_HALFWIDTH) {
pixels[y * width + x] =
mBitmap.getPixel(
x - halfW + Const.IMAGE_HALFWIDTH, y - halfH + Const.IMAGE_HALFWIDTH);
} else {
// 此处可以修改二维码的颜色，可以分别制定二维码和背景的颜色；
pixels[y * width + x] = matrix.get(x, y) ? 0xff000000 : 0xfffffff;
}
}
}
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
// 通过像素数组生成bitmap
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
public static Bitmap Create2DCode(Context c, String str) throws WriterException {
int qr_width = ScreenUtils.getScreenWidth(c) * 2 / 3;
int qr_height = qr_width;
BitMatrix matrix =
new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, qr_width, qr_height);
int width = matrix.getWidth();
int height = matrix.getHeight();
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);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
