OpenCVLoader.initAsync() fails for the first few times
OpenCV 3.3.0
Android 7.1.1
Oneplus 5
I installed OpenCV 3.3.0 Manager arm64-v8a by adb to the phone.
The OpenCVLoader.initAsync() operation always fails for the first few times, and succeeds finally.
A "Package not found" dialog shows. I click "NO". Repeat this several times. And then succeeds.
Load code is:
@Override
public void onResume() {
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_3_0, this, loaderCallback);
}
logcat output:
09-20 17:49:51.577 17807-17807/cn.deepclue.vins2 I/Vins2Tag: In onCreate()
09-20 17:49:51.583 17807-17807/cn.deepclue.vins2 D/CameraBridge: Attr count: 6
09-20 17:49:51.592 17807-17807/cn.deepclue.vins2 D/OpenCVManager/Helper: Request new service installation
09-20 17:49:51.605 17807-22993/cn.deepclue.vins2 D/AppTracker: App Event: start
09-20 17:49:51.640 17807-17807/cn.deepclue.vins2 D/CameraBridge: call surfaceChanged event
09-20 17:49:51.640 17807-17807/cn.deepclue.vins2 D/CameraBridge: call checkCurrentState
Please give me some clue to solve this issue.
The complete code is:
package
cn.deepclue.vins2;
cn.deepclue.vins2; import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceView;
import android.view.WindowManager;
import android.widget.TextView;
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Mat;
public class MainActivity extends Activity implements CvCameraViewListener2 {
private static final String TAG = "Vins2Tag";
private CameraBridgeViewBase cameraView;
// Used to load the 'native-lib' library on application startup.
static {
System.loadLibrary("native-lib");
}
private BaseLoaderCallback loaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
if (status == LoaderCallbackInterface.SUCCESS) {
Log.i(TAG, "OpenCV loaded successfully");
cameraView.enableView();
} else {
Log.i(TAG, "OpenCV load failed");
}
super.onManagerConnected(status);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "In onCreate()");
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.activity_main);
cameraView = (CameraBridgeViewBase) findViewById(R.id.camera_view);
cameraView.setVisibility(SurfaceView.VISIBLE);
cameraView.setCvCameraViewListener(this);
}
@Override
public void onPause() {
super.onPause();
if (cameraView != null)
cameraView.disableView();
}
@Override
public void onResume() {
Log.i(TAG, "In onResume()");
super.onResume();
Log.d(TAG, "Using OpenCV Manager for initialization");
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_3_0, this, loaderCallback);
}
public void onDestroy() {
super.onDestroy();
if (cameraView != null)
cameraView.disableView();
}
public void onCameraViewStarted(int width, int height) {
}
public void onCameraViewStopped() {
}
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
return inputFrame.rgba();
}
/**
* A native method that is implemented by the 'native-lib' native library,
* which is packaged with this application.
*/
public native String stringFromJNI();
}
