Errors when onBackPressed

[Paul75]

Hello,

The message in console is : 09-24 18:20:48.055 8021-8036/fr.laposte.gompost E/BufferQueueProducer: [SurfaceTexture-0-8021-0] dequeueBuffer: BufferQueue has been abandoned 09-24 18:20:48.063 8021-8034/fr.laposte.gompost E/BufferQueueProducer: [SurfaceTexture-0-8021-0] queueBuffer: BufferQueue has been abandoned 09-24 18:20:48.096 8021-8036/fr.laposte.gompost E/BufferQueueProducer: [SurfaceTexture-0-8021-0] queueBuffer: BufferQueue has been abandoned 09-24 18:20:48.130 8021-8034/fr.laposte.gompost E/BufferQueueProducer: [SurfaceTexture-0-8021-0] queueBuffer: BufferQueue has been abandoned 09-24 18:20:48.163 8021-8446/fr.laposte.gompost E/BufferQueueProducer: [SurfaceTexture-0-8021-0] queueBuffer: BufferQueue has been abandoned

when I do a onBackPressed.

Normal ?

[Diolor]

Are you using camera v1 or v2?

[Paul75]

I'm using the code that have in the source code.

2017-09-24 18:35 GMT+02:00 Dionysis Lorentzos notifications@github.com:

Are you using camera v1 or v2?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/Fotoapparat/Fotoapparat/issues/101#issuecomment-331721951, or mute the thread https://github.com/notifications/unsubscribe-auth/AAb5ZvtnPoKR-IWRz-HHjnTIVDLCSOb2ks5sloTpgaJpZM4Ph8Mx .

-- Paul

[Diolor]

Okay, in other words. How do initialize FA and when do you call .onStop()?

[Paul75]

Hello,

I call ::

private FotoapparatSwitcher fotoapparatSwitcher;
    private Fotoapparat frontFotoapparat;

cameraView = findViewById(R.id.camera_view);

private void setupFotoapparat() {
        backFotoapparat = createFotoapparat(LensPosition.BACK);
        fotoapparatSwitcher = FotoapparatSwitcher.withDefault(backFotoapparat);
    }

@Override
    protected void onStart() {
        super.onStart();
        if (hasCameraPermission) {
            fotoapparatSwitcher.start();
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (hasCameraPermission) {
            fotoapparatSwitcher.stop();
        }
    }

@Override
    public void onBackPressed() {
        super.onBackPressed();
        finish();
    }

[Diolor]

Thanks, but could you please post the full relevant code? E.g. What is in the createFotoapparat method? Also, is this happening on some specific device/API version? Thanks!

[Paul75]

Hello,

API 24.

Code ::

`package fr.laposte.gompost.activity.photos;

import android.Manifest; import android.content.pm.PackageManager; import android.os.Environment; import android.support.annotation.NonNull; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.support.v7.widget.SwitchCompat; import android.view.View; import android.widget.CompoundButton; import android.widget.ImageView; import android.widget.SeekBar; import android.widget.Toast;

import java.io.File;

import fr.laposte.gompost.R; import io.fotoapparat.Fotoapparat; import io.fotoapparat.FotoapparatSwitcher; import io.fotoapparat.error.CameraErrorCallback; import io.fotoapparat.hardware.CameraException; import io.fotoapparat.parameter.LensPosition; import io.fotoapparat.parameter.ScaleType; import io.fotoapparat.parameter.update.UpdateRequest; import io.fotoapparat.photo.BitmapPhoto; import io.fotoapparat.preview.Frame; import io.fotoapparat.preview.FrameProcessor; import io.fotoapparat.result.PendingResult; import io.fotoapparat.result.PhotoResult; import io.fotoapparat.view.CameraView;

import static io.fotoapparat.log.Loggers.fileLogger; import static io.fotoapparat.log.Loggers.logcat; import static io.fotoapparat.log.Loggers.loggers; import static io.fotoapparat.parameter.selector.AspectRatioSelectors.standardRatio; import static io.fotoapparat.parameter.selector.FlashSelectors.autoFlash; import static io.fotoapparat.parameter.selector.FlashSelectors.autoRedEye; import static io.fotoapparat.parameter.selector.FlashSelectors.off; import static io.fotoapparat.parameter.selector.FlashSelectors.torch; import static io.fotoapparat.parameter.selector.FocusModeSelectors.autoFocus; import static io.fotoapparat.parameter.selector.FocusModeSelectors.continuousFocus; import static io.fotoapparat.parameter.selector.FocusModeSelectors.fixed; import static io.fotoapparat.parameter.selector.LensPositionSelectors.lensPosition; import static io.fotoapparat.parameter.selector.Selectors.firstAvailable; import static io.fotoapparat.parameter.selector.SizeSelectors.biggestSize; import static io.fotoapparat.result.transformer.SizeTransformers.scaled;

public class CameraActivity extends AppCompatActivity { private final PermissionsDelegate permissionsDelegate = new PermissionsDelegate(this); private boolean hasCameraPermission; private CameraView cameraView;

private FotoapparatSwitcher fotoapparatSwitcher;
private Fotoapparat frontFotoapparat;
private Fotoapparat backFotoapparat;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_camera);

    cameraView = findViewById(R.id.camera_view);
    hasCameraPermission = permissionsDelegate.hasCameraPermission();

    if (hasCameraPermission) {
        cameraView.setVisibility(View.VISIBLE);
    } else {
        permissionsDelegate.requestCameraPermission();
    }

    setupFotoapparat();

    takePictureOnClick();
    //focusOnLongClick();
    //switchCameraOnClick();
    //toggleTorchOnSwitch();
}

private void setupFotoapparat() {
    //frontFotoapparat = createFotoapparat(LensPosition.FRONT);
    backFotoapparat = createFotoapparat(LensPosition.BACK);
    fotoapparatSwitcher = FotoapparatSwitcher.withDefault(backFotoapparat);
}

/*private void toggleTorchOnSwitch() {
    SwitchCompat torchSwitch = (SwitchCompat) findViewById(R.id.torchSwitch);

    torchSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            fotoapparatSwitcher
                    .getCurrentFotoapparat()
                    .updateParameters(
                            UpdateRequest.builder()
                                    .flash(
                                            isChecked
                                                    ? torch()
                                                    : off()
                                    )
                                    .build()
                    );
        }
    });
}*/

/*private void switchCameraOnClick() {
    View switchCameraButton = findViewById(R.id.switchCamera);
    switchCameraButton.setVisibility(
            canSwitchCameras()
                    ? View.VISIBLE
                    : View.GONE
    );
    switchCameraOnClick(switchCameraButton);
}*/

/*private void switchCameraOnClick(View view) {
    view.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            switchCamera();
        }
    });
}*/

/*private void focusOnLongClick() {
    cameraView.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            fotoapparatSwitcher.getCurrentFotoapparat().autoFocus();

            return true;
        }
    });
}*/

private void takePictureOnClick() {
    ImageView take = findViewById(R.id.take);

    take.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            takePicture();
        }
    });
}

private boolean canSwitchCameras() {
    return frontFotoapparat.isAvailable() == backFotoapparat.isAvailable();
}

private Fotoapparat createFotoapparat(LensPosition position) {
    return Fotoapparat
            .with(this)
            .into(cameraView)
            .previewScaleType(ScaleType.CENTER_CROP)
            .photoSize(standardRatio(biggestSize()))
            .lensPosition(lensPosition(position))
            .focusMode(firstAvailable(
                    continuousFocus(),
                    autoFocus(),
                    fixed()
            ))
            .flash(firstAvailable(
                    autoRedEye(),
                    autoFlash(),
                    torch(),
                    off()
            ))
            .frameProcessor(new SampleFrameProcessor())
            .logger(loggers(
                    logcat(),
                    fileLogger(this)
            ))
            .cameraErrorCallback(new CameraErrorCallback() {
                @Override
                public void onError(CameraException e) {
                    Toast.makeText(CameraActivity.this, e.toString(), Toast.LENGTH_LONG).show();
                }
            })
            .build();
}

private void takePicture() {
    PhotoResult photoResult = fotoapparatSwitcher.getCurrentFotoapparat().takePicture();

    File saveDir = null;

    if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)
            == PackageManager.PERMISSION_GRANTED) {
        // Only use external storage directory if permission is granted, otherwise cache directory is used by default
        saveDir = new File(Environment.getExternalStorageDirectory(), "GOMPOST_Photos");
        saveDir.mkdirs();
    }

    /*photoResult.saveToFile(new File(
            getExternalFilesDir("photos"),
            "photo.jpg"
    ));*/
    photoResult.saveToFile(saveDir);

    photoResult
            .toBitmap(scaled(0.25f))
            .whenAvailable(new PendingResult.Callback<BitmapPhoto>() {
                @Override
                public void onResult(BitmapPhoto result) {
                    ImageView imageView = (ImageView) findViewById(R.id.result);

                    imageView.setImageBitmap(result.bitmap);
                    imageView.setRotation(-result.rotationDegrees);
                }
            });
}

/*private void switchCamera() {
    if (fotoapparatSwitcher.getCurrentFotoapparat() == frontFotoapparat) {
        fotoapparatSwitcher.switchTo(backFotoapparat);
    } else {
        fotoapparatSwitcher.switchTo(frontFotoapparat);
    }
}*/

@Override
protected void onStart() {
    super.onStart();
    if (hasCameraPermission) {
        fotoapparatSwitcher.start();
    }
}

@Override
protected void onStop() {
    super.onStop();
    if (hasCameraPermission) {
        fotoapparatSwitcher.stop();
    }
}

@Override
public void onRequestPermissionsResult(int requestCode,
                                       @NonNull String[] permissions,
                                       @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (permissionsDelegate.resultGranted(requestCode, permissions, grantResults)) {
        fotoapparatSwitcher.start();
        cameraView.setVisibility(View.VISIBLE);
    }
}

private class SampleFrameProcessor implements FrameProcessor {

    @Override
    public void processFrame(Frame frame) {
        // Perform frame processing, if needed
    }

}

@Override
public void onBackPressed() {
    super.onBackPressed();
    finish();
}

} `

[dmitry-zaitsev]

I can't say what is the exact reason for that, but I can say that this is a normal behaviour which is present in other camera libraries as well. It does not affect the app in any harmful way.