我在 android 中使用 OpenCV为什么在声明 Mat 时出现错误？

如何解决我在 android 中使用 OpenCV为什么在声明 Mat 时出现错误？

我想使用 OpenCV 将图像阈值转换为二进制图像。我正在从 ImageView 获取我的图像。将它从 Uri 转换为 Bitmap，然后将 Bitmap 转换为 Mat 以使用阈值方法但是当我尝试声明 Mat 时，它显示了这个错误：

E/TEST: Cannot connect to OpenCV Manager
E/opencv.org: No implementation found for long org.opencv.core.Mat.n_Mat() (tried Java_org_opencv_core_Mat_n_1Mat and Java_org_opencv_core_Mat_n_1Mat__)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: opencv.org,PID: 5318
    java.lang.UnsatisfiedLinkError: No implementation found for long org.opencv.core.Mat.n_Mat() (tried Java_org_opencv_core_Mat_n_1Mat and Java_org_opencv_core_Mat_n_1Mat__)
        at org.opencv.core.Mat.n_Mat(Native Method)
        at org.opencv.core.Mat.<init>(Mat.java:23)
        at com.practice.fyptry.import_image.onCreate(import_image.java:86)
        at android.app.Activity.performCreate(Activity.java:7825)
        at android.app.Activity.performCreate(Activity.java:7814)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1306)
        at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:3245)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7356)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

我的代码是：

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_import_image);
    Intent intent = new Intent();
    imageView = (ImageView) findViewById(R.id.imageView);
    Uri imageUri = getIntent().getData();
    try {
        Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(),imageUri);
        try{
            Mat bw=new Mat();
            Utils.bitmapToMat(bitmap,bw);
            Mat destination = new Mat(bw.rows(),bw.cols(),bw.type());
            destination = bw;
            Imgproc.threshold(bw,destination,128,255,Imgproc.THRESH_TOZERO);
            Bitmap bmp = null;
            Utils.matToBitmap(destination,bmp);
            imageView.setimageBitmap(bmp);
        } catch (Exception e) {
            Log.e("ErrorMessage","onCreate: " + e.getMessage() );
        }
     } catch (IOException e) {
        e.printstacktrace();
     }

我已经搜索了很多这个错误。我在 onCreate() 之前也试过这些方法：

private BaseLoaderCallback mloaderCallback = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
        switch (status) {
            case LoaderCallbackInterface.SUCCESS:
            {
                Log.i("OpenCV","OpenCV loaded successfully");
                imageMat=new Mat();
            } break;
            default:
            {
                super.onManagerConnected(status);
            } break;
        }
    }
};

 public void onResume()
{
    super.onResume();
    if (!OpenCVLoader.initDebug()) {
        Log.d("OpenCV","Internal OpenCV library not found. Using OpenCV Manager for initialization");
        OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_0_0,this,mloaderCallback);
    } else {
        Log.d("OpenCV","OpenCV library found inside package. Using it!");
        mloaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
    }
}

但还是出现同样的错误。请帮我解决这个问题。