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java - java.lang.NoSuchMethodError: 没有静态方法 boundingRect(Lorg/opencv/core/Mat;)

问题描述

我有一些 Android 代码需要找到轮廓并用矩形勾勒它们。我对 OpenCV 初始化没有任何问题（所有其他功能都可以正常工作）。但是当我运行时发生Imgproc.boundingRect(contours.get(i));错误java.lang.NoSuchMethodError。

2021-09-03 18:24:24.331 23081-23081/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.fern.mangoeye, PID: 23081
    java.lang.NoSuchMethodError: No static method boundingRect(Lorg/opencv/core/Mat;)Lorg/opencv/core/Rect; in class Lorg/opencv/imgproc/Imgproc; or its super classes (declaration of 'org.opencv.imgproc.Imgproc' appears in /data/app/com.fern.mangoeye-jmLx1kABmB7GFFie5xaCyA==/base.apk!classes9.dex)
        at com.fern.mangoeye.OpenCVHandler.feedNewYUVData(OpenCVHandler.java:132)
        at com.fern.mangoeye.CameraView.onPreviewFrame(CameraView.java:140)
        at android.hardware.Camera$EventHandler.handleMessage(Camera.java:1221)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:237)
        at android.app.ActivityThread.main(ActivityThread.java:8167)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)

OpenCV 初始化OpenCVLoader.initDebug()有BaseLoaderCallback

OpenCV SDK 版本：3.4.1 compileSdk：31

标签： javaandroidopencv

解决方案

我通过指定exclude group: 'org.bytedeco', module: 'opencv'for implementation (group: 'org.bytedeco', name: 'javacv', version: '1.5.5')in解决了我的问题build.gradle。所以现在我的依赖项看起来像这样：

dependencies {

    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.3.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
    implementation project(path: ':opencv')

    implementation 'org.jcodec:jcodec:0.2.5'
    
    implementation (group: 'org.bytedeco', name: 'javacv', version: '1.5.5'){
        exclude group: 'org.bytedeco', module: 'opencv'
    }

    implementation group: 'org.bytedeco', name: 'openblas', version: '0.3.13-1.5.5', classifier: 'android-arm'
    implementation group: 'org.bytedeco', name: 'openblas', version: '0.3.13-1.5.5', classifier: 'android-arm64'
    implementation group: 'org.bytedeco', name: 'openblas', version: '0.3.13-1.5.5', classifier: 'android-x86_64'
    implementation group: 'org.bytedeco', name: 'openblas', version: '0.3.13-1.5.5', classifier: 'android-x86'

    implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5', classifier: 'android-arm'
    implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5', classifier: 'android-arm64'
    implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5', classifier: 'android-x86_64'
    implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5', classifier: 'android-x86'
}

我还创建了jni文件夹并将文件夹复制sdk\native\libs到其中。所以，问题在于 OpenCV 的初始化

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