基于ZXing的二维码解码例程（源代码分享）.rar 可以解QR码，PDF417码，DATAMatrix，等二维码。 需要相机支持自动对焦。 public static final AZTEC, public static final CODABAR, public static final CODE_39, public static final CODE_93, public static final CODE_128, public static final DATA_MATRIX, public static final EAN_8, public static final EAN_13, public static final ITF, public static final MAXICODE, public static final PDF_417, public static final QR_CODE, public static final RSS_14, public static final RSS_EXPANDED, public static final UPC_A, public static final UPC_E, public static final UPC_EAN_EXTENSION;