How to debug "Operation failed internally"?

[jaroslavas]

What are you trying to achieve or the steps to reproduce?

When running result.saveToFile(image) photo is not saved and the only thing I get is Couldn't deliver pending result: Operation failed internally in logcat and null unit in whenDone. How should I debug the issue and find out what's wrong?

How did you initialize FA?

fotoapparat = Fotoapparat
                .with(this)
                .into(cameraView)           // view which will draw the camera preview
                .previewScaleType(ScaleType.CenterCrop)  // we want the preview to fill the view
                .photoResolution(highestResolution())   // we want to have the biggest photo possible
                .lensPosition(back())       // we want back camera
                .focusMode(firstAvailable(  // (optional) use the first focus mode which is supported by device
                        continuousFocusPicture(),
                        autoFocus(),        // in case if continuous focus is not available on device, auto focus will be used
                        fixed()             // if even auto focus is not available - fixed focus mode will be used
                ))
                .flash(firstAvailable(      // (optional) similar to how it is done for focus mode, this time for flash
                        autoFlash(),
                        torch()
                ))
                .logger(loggers(            // (optional) we want to log camera events in 2 places at once
                        logcat()//,           // ... in logcat
                ))
                .build();

And then:

        File image = new File(filePath.getPath());
        PhotoResult result = fotoapparat.takePicture();
        PendingResult<Unit> pending = result.saveToFile(image);
        pending.whenDone(new WhenDoneListener<Unit>() {
            @Override
            public void whenDone(Unit unit) {
                setResult(unit != null ? RESULT_OK : RESULT_CANCELED);
                finish();
            }
        });

What was the result you received?

Couldn't deliver pending result: Operation failed internally

What did you expect?

A photo saved to a file or more descriptive error/exception.

Context:

• FA version: 2.2.0
• Devices/APIs affected: Samsung S4 Android 7

[Raenar4k]

I'm also interested in this - trying to figure out why on specific device app freezes after taking a photo, while only having some logs to look at. In 1.5.0 version, when camera failed i could get some specifics about exception in log:

E/Camera: Error 100
W/System.err: java.lang.Exception
W/System.err:     at io.fotoapparat.hardware.v1.Camera1.recordMethod(Camera1.java:434)
W/System.err:     at io.fotoapparat.hardware.v1.Camera1.takePicture(Camera1.java:285)

Now, at 2.2.0 at same device with same issue i see:

Couldn't deliver pending result: Operation failed internally.

I think it can be useful if PendingResult. whenAvailable after catching exception would also print out stacktrace alongside that short description. It might not be that useful in some cases, but still it is better to at least give some idea why that might happen.

[Diolor]

Hey, we suppress the exception in the whenDone (maybe we can think a way to deliver that one somehow). If you really need to debug this you can either use .await which will throw an exception or attach an rxAdapter which will propagate the error in the .onError

[valterh4ck3r]

Same problem.

[amiyo-biswas]

Same issue.