Android生成二维码图片

public static Bitmap Create2BarcodeCode(String content) {
	try {
		// 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(content, 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
		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;
				} else {
					pixels[y * width + x] = 0xffffffff;
				}
			}
		}
		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;
	} catch (WriterException e) {
		e.printStackTrace();
	}
	return null;
}