Doesn't work, not sure what's wrong

[aaronpk]

I installed the plugin and now QuickLook is clearly trying to load the plugin on .geojson files. However the preview window is just white. I'm not sure how to debug, or how to run this from XCode so I can see it live without building and archiving it from XCode.

[irees]

You can generate the preview by running:

mkdir test; qlmanage -o test -p file.geojson

Which will create test/file.geojson.qlpreview. You can then open Preview.html with Firebug, etc.

There is an issue that I have not yet resolved involves the plugin intermittently failing to read the geojson data, even on the same file.

NSData *data = [NSData dataWithContentsOfURL:nsurl];

That could be the cause of your white window; when this happens, the plugin simply exits. I should add a more useful message than an empty window when this occurs. Any suggestions you have would be welcome; it's what is keeping me from considering the project "broadly useful."

[aaronpk]

Thanks! That's super helpful. I tried it and got this result on the console:

Testing Quick Look preview with files:
    test.geojson
[ERROR] Computing 6571367.27687927 raised '*** -[__NSCFString stringByReplacingOccurrencesOfString:withString:options:range:]: nil argument'
* /Users/aaronpk/Code/tmp/test.geojson did not produce any preview

As for the white window, probably just a message like "A preview was unable to be loaded at this time. Try again." would work.

[irees]

Can you run it a few times? Do you get the same result each time? If so, can you post the file you tested with, or you may send it to me privately.

[aaronpk]

Oh funny... yeah it worked (with a bunch of weird errors) the second time. Generated a Preview.html file which is exactly what I would have expected. Still no luck in QuickLook no matter how many times I try it.

[irees]

I added a file to the repository, quicklookgeojson/test.geojson. Can you try this file with both Finder and qlmanage?

[firesharker]

I got the same issue. If I generate a preview with qlmanage -o test -p test.geojson then open the result with Safari it works perfectly, but if I just press space on the file Quick Look displays only a white background. Do you have any idea what could be the problem? (I am on 10.9.5.)

[Mechazawa]

I got the same issue. If I generate a preview with qlmanage -o test -p test.geojson then open the result with Safari it works perfectly, but if I just press space on the file Quick Look displays only a white background. Do you have any idea what could be the problem? (I am on 10.9.5.)

I think this plugin was just using an expired key or something. Try switching to a different data provider such as carto that fixed it for me.

You can manually apply the patch by opening up the package contents.

[JanC]

hey,
I have the same issue. The preview renders the geojson correctly but the background map is empty. Using the carto provider from that PR works fine.

@irees any chance you merge that PR?

[tduvalpm]

I get this error on macos Tahoe 26.2

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSDictionaryM setObject:forKey:]: key cannot be nil'
*** First throw call stack:
(
	0   CoreFoundation                      0x00000001995998ec __exceptionPreprocess + 176
	1   libobjc.A.dylib                     0x0000000199072418 objc_exception_throw + 88
	2   CoreFoundation                      0x00000001996c59e0 -[__NSDictionaryM setObject:forKey:] + 1068
	3   ExtensionFoundation                 0x000000023f57b73c -[EXConcreteExtension makeExtensionContextAndXPCConnectionForRequest:error:] + 384
	4   ExtensionFoundation                 0x000000023f57d54c -[EXConcreteExtension _beginExtensionRequest:error:] + 344
	5   ExtensionFoundation                 0x000000023f57c9a4 -[EXConcreteExtension beginExtensionRequestWithOptions:inputItems:error:] + 112
	6   QuickLookSupport                    0x00000001c27dc7ec -[QLExtension _setupConnectionIfNeededWithCompletionHandler:] + 176
	7   QuickLookSupport                    0x00000001c27dd370 __53-[QLExtension extensionContextWithCompletionHandler:]_block_invoke + 120
	8   libdispatch.dylib                   0x00000001992f0b5c _dispatch_call_block_and_release + 32
	9   libdispatch.dylib                   0x000000019930aad4 _dispatch_client_callout + 16
	10  libdispatch.dylib                   0x00000001992f94e8 _dispatch_lane_serial_drain + 740
	11  libdispatch.dylib                   0x00000001992f9fc4 _dispatch_lane_invoke + 388
	12  libdispatch.dylib                   0x0000000199304474 _dispatch_root_queue_drain_deferred_wlh + 292
	13  libdispatch.dylib                   0x0000000199303d6c _dispatch_workloop_worker_thread + 692
	14  libsystem_pthread.dylib             0x00000001994a9e4c _pthread_wqthread + 292
	15  libsystem_pthread.dylib             0x00000001994a8b9c start_wqthread + 8
)
libc++abi: terminating due to uncaught exception of type NSException
zsh: abort      qlmanage -o test -p