参考原文:https://blog.csdn.net/cyl1226541/article/details/70557232
//复杂模式,开启PURE_BARCODE模式(☆☆☆) HINTS.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE); //优化精度 HINTS.put(DecodeHintType.TRY_HARDER, BarcodeFormat.QR_CODE);
上述两句代码建议不加,因为加上以后,在保证只有二维码的情况下,才可以正常识别。
// 解码设置编码方式为:utf-8, HINTS.put(DecodeHintType.CHARACTER_SET, "utf-8");
上述方法,尝试过后,不可行, 还有说法是,将彩色图片转换为黑白图片。
用这个博客提供的https://blog.csdn.net/android_machong/article/details/53169048图片转换为黑白图片后,还是不行
// 彩色图片转黑白 public static Bitmap convertToBlackWhite(Bitmap bmp) { int width = bmp.getWidth(); // 获取位图的宽 int height = bmp.getHeight(); // 获取位图的高 int[] pixels = new int[width * height]; // 通过位图的大小创建像素点数组 bmp.getPixels(pixels, 0, width, 0, 0, width, height); int alpha = 0xFF << 24; for (int i = 0; i < height; i++) { for (int j = 0; j < width; j++) { int grey = pixels[width * i + j]; // 分离三原色 int red = ((grey & 0x00FF0000) >> 16); int green = ((grey & 0x0000FF00) >> 8); int blue = (grey & 0x000000FF); // 转化成灰度像素 grey = (int) (red * 0.3 + green * 0.59 + blue * 0.11); grey = alpha | (grey << 16) | (grey << 8) | grey; pixels[width * i + j] = grey; } } // 新建图片 Bitmap newBmp = Bitmap.createBitmap(width, height, Config.RGB_565); // 设置图片数据 newBmp.setPixels(pixels, 0, width, 0, 0, width, height); Bitmap resizeBmp = ThumbnailUtils.extractThumbnail(newBmp, 380, 460); return resizeBmp; }