Java Android版OpenCV：非法转发引用

我正在为我的项目使用

OpenCV

，除了

DescriptorExtractor.java

，其他一切都很好。它每天都给我以下错误：

/opencv/src/org/opencv/features2d/DescriptorExtractor.java
Error:(26, 29) error: illegal forward reference
Error:(27, 29) error: illegal forward reference
Error:(28, 28) error: illegal forward reference
Error:(29, 30) error: illegal forward reference
Error:(30, 30) error: illegal forward reference
Error:(31, 30) error: illegal forward reference
Error:(32, 30) error: illegal forward reference

文件最初看起来如下所示：

public class DescriptorExtractor {

    public static final int
            SIFT = 1,
            SURF = 2,
            ORB = 3,
            BRIEF = 4,
            BRISK = 5,
            FREAK = 6,
            AKAZE = 7,
            OPPONENT_SIFT = OPPONENTEXTRACTOR + SIFT,
            OPPONENT_SURF = OPPONENTEXTRACTOR + SURF,
            OPPONENT_ORB = OPPONENTEXTRACTOR + ORB,
            OPPONENT_BRIEF = OPPONENTEXTRACTOR + BRIEF,
            OPPONENT_BRISK = OPPONENTEXTRACTOR + BRISK,
            OPPONENT_FREAK = OPPONENTEXTRACTOR + FREAK,
            OPPONENT_AKAZE = OPPONENTEXTRACTOR + AKAZE;
    private static final int
            OPPONENTEXTRACTOR = 1000;
    protected final long nativeObj;

private static final int OPPONENTEXTRACTOR = 1000;

public static final int
        SIFT = 1,
        SURF = 2,
        ORB = 3,
        BRIEF = 4,
        BRISK = 5,
        FREAK = 6,
        AKAZE = 7,
        OPPONENT_SIFT = OPPONENTEXTRACTOR + SIFT,
        OPPONENT_SURF = OPPONENTEXTRACTOR + SURF,
        OPPONENT_ORB = OPPONENTEXTRACTOR + ORB,
        OPPONENT_BRIEF = OPPONENTEXTRACTOR + BRIEF,
        OPPONENT_BRISK = OPPONENTEXTRACTOR + BRISK,
        OPPONENT_FREAK = OPPONENTEXTRACTOR + FREAK,
        OPPONENT_AKAZE = OPPONENTEXTRACTOR + AKAZE;

每天我都把对

对手的理解力降低到全班第一，问题就消失了。但第二天，课程恢复到原来的水平。在课堂的最上面有一条评论

//
// This file is auto-generated. Please don't modify it!
//

我该怎么办？我如何防止这种情况

更新：

我正在使用适用于Android 3.0和Java 7.80的OpenCV，您的声明顺序错误。应该是这样的:

public class DescriptorExtractor {

    public static final int
            SIFT = 1,
            SURF = 2,
            ORB = 3,
            BRIEF = 4,
            BRISK = 5,
            FREAK = 6,
            AKAZE = 7,
            OPPONENT_SIFT = OPPONENTEXTRACTOR + SIFT,
            OPPONENT_SURF = OPPONENTEXTRACTOR + SURF,
            OPPONENT_ORB = OPPONENTEXTRACTOR + ORB,
            OPPONENT_BRIEF = OPPONENTEXTRACTOR + BRIEF,
            OPPONENT_BRISK = OPPONENTEXTRACTOR + BRISK,
            OPPONENT_FREAK = OPPONENTEXTRACTOR + FREAK,
            OPPONENT_AKAZE = OPPONENTEXTRACTOR + AKAZE;
    private static final int
            OPPONENTEXTRACTOR = 1000;
    protected final long nativeObj;

private static final int OPPONENTEXTRACTOR = 1000;

public static final int
        SIFT = 1,
        SURF = 2,
        ORB = 3,
        BRIEF = 4,
        BRISK = 5,
        FREAK = 6,
        AKAZE = 7,
        OPPONENT_SIFT = OPPONENTEXTRACTOR + SIFT,
        OPPONENT_SURF = OPPONENTEXTRACTOR + SURF,
        OPPONENT_ORB = OPPONENTEXTRACTOR + ORB,
        OPPONENT_BRIEF = OPPONENTEXTRACTOR + BRIEF,
        OPPONENT_BRISK = OPPONENTEXTRACTOR + BRISK,
        OPPONENT_FREAK = OPPONENTEXTRACTOR + FREAK,
        OPPONENT_AKAZE = OPPONENTEXTRACTOR + AKAZE;

这可能是原因吗。另见。在Java 7的更高版本中似乎已修复。请包括您正在使用的opencv和jdk版本。很好，他们似乎忽略了编写类的最佳实践。这是一个有效的错误。因为它已经过去了6年，我不能尝试这个：）。