Java 使用OpenCV在Android Studio中加载和显示图像
我正试图使用OpenCV在Android Studio中加载和显示图像,但它崩溃了。我不知道问题出在哪里。。。 感谢您的帮助!谢谢强>Java 使用OpenCV在Android Studio中加载和显示图像,java,opencv,android-studio,Java,Opencv,Android Studio,我正试图使用OpenCV在Android Studio中加载和显示图像,但它崩溃了。我不知道问题出在哪里。。。 感谢您的帮助!谢谢 public class MainActivity2 extends Activity { private static final String TAG = "Kate : "; BaseLoaderCallback mOpenCVCallBack; Mat mRgba; ImageView imge1; @Override public void onCrea
public class MainActivity2 extends Activity {
private static final String TAG = "Kate : ";
BaseLoaderCallback mOpenCVCallBack;
Mat mRgba;
ImageView imge1;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_activity2);
}
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS: {
Log.i(TAG, "OpenCV loaded successfully");
mRgba=new Mat();
load_AND_display();
}
break;
default: {
super.onManagerConnected(status);
}
break;
}
}
};
public void load_AND_display() {
//getting ImageView
imge1= (ImageView) findViewById(R.id.img1);
try {
//Loading Image to Mat object
mRgba= Utils.loadResource(this,R.drawable.mako,Highgui.CV_LOAD_IMAGE_COLOR);
} catch (IOException e) {
e.printStackTrace();
}
// create a bitmap:
Bitmap bm = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(),Bitmap.Config.ARGB_8888);
// convert Mat image to bitmap::
Utils.matToBitmap(mRgba, bm);
//setting the image
imge1.setImageBitmap(bm);
}
@Override
public void onResume() {
super.onResume();
mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);
/*OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_6, this, mLoaderCallback);*/
}
这是日志:
05-05 15:54:20.323 29948-29948/com.example.myapplication E/art﹕ 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__)
05-05 15:54:20.323 29948-29948/com.example.myapplication E/AndroidRuntime﹕ FATAL EXCEPTION: main Process: com.example.myapplication, PID: 29948
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__)
使用以下步骤:
onResume()
中,检查OpenCv是否已加载:opencv
操作或初始化之前——调用以下命令:这里的
mBitmap
是我们要使用的图像的位图,Utils.bitmapToMat()
是org.opencv.android*
的内置函数。在您的代码中,加载可绘制位图,然后转换为mat。为什么要在简历中注释最后一行(正确的)呢?您必须调用OpenCVLoader.initAsync()
,而不是mLoaderCallback.onManagerConnected()
,它可以工作!!非常感谢你!
private val mLoaderCallback: BaseLoaderCallback = object : BaseLoaderCallback(this) {
override fun onManagerConnected(status: Int) {
when (status) {
SUCCESS -> {
Log.e("OpenCV", "OpenCV loaded successfully")
}
else -> {
super.onManagerConnected(status)
}
}
}
}
override fun 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)
}
}
.....
setContentView(R.layout.activity_main)
OpenCVLoader.initDebug()
.....
val matObject = Mat()
Utils.bitmapToMat(mBitmap, matObject)